[cmNOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Ven 27 Aou 18:02:42 UTC 2021


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats at lists.apnic.net

For historical data, please see http://thyme.rand.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

Routing Table Report   04:00 +10GMT Sat 28 Aug, 2021

Report Website:     http://thyme.rand.apnic.net
Detailed Analysis:  http://thyme.rand.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              860552
    Prefixes after maximum aggregation (per Origin AS):          325697
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      413582
Total ASes present in the Internet Routing Table:                 71880
    Prefixes per ASN:                                             11.97
Origin-only ASes present in the Internet Routing Table:           61776
Origin ASes announcing only one prefix:                           25491
Transit ASes present in the Internet Routing Table:               10104
Transit-only ASes present in the Internet Routing Table:            331
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      37
    Max AS path prepend of ASN (141827)                              33
Prefixes from unregistered ASNs in the Routing Table:              1009
    Number of instances of unregistered ASNs:                      1014
Number of 32-bit ASNs allocated by the RIRs:                      37049
Number of 32-bit ASNs visible in the Routing Table:               30796
Prefixes from 32-bit ASNs in the Routing Table:                  142979
Number of bogon 32-bit ASNs visible in the Routing Table:            26
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            510
Number of addresses announced to Internet:                   3037760640
    Equivalent to 181 /8s, 16 /16s and 140 /24s
    Percentage of available address space announced:               82.1
    Percentage of allocated address space announced:               82.1
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:      285737

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                   231019
    Total APNIC prefixes after maximum aggregation:               65949
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          226547
    Unique aggregates announced from the APNIC address blocks:    90942
APNIC Region origin ASes present in the Internet Routing Table:   11889
    APNIC Prefixes per ASN:                                       19.06
APNIC Region origin ASes announcing only one prefix:               3374
APNIC Region transit ASes present in the Internet Routing Table:   1676
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         37
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7045
Number of APNIC addresses announced to Internet:              772854528
    Equivalent to 46 /8s, 16 /16s and 211 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-147769
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    251710
    Total ARIN prefixes after maximum aggregation:               115152
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           251301
    Unique aggregates announced from the ARIN address blocks:    119679
ARIN Region origin ASes present in the Internet Routing Table:    18898
    ARIN Prefixes per ASN:                                        13.30
ARIN Region origin ASes announcing only one prefix:                6875
ARIN Region transit ASes present in the Internet Routing Table:    1951
Average ARIN Region AS path length visible:                         3.9
    Max ARIN Region AS path length visible:                          28
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4086
Number of ARIN addresses announced to Internet:              1268211200
    Equivalent to 75 /8s, 151 /16s and 94 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  63/8,  64/8,  65/8,
                        66/8,  67/8,  68/8,  69/8,  70/8,  71/8,  72/8,
                        73/8,  74/8,  75/8,  76/8,  96/8,  97/8,  98/8,
                        99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
                       130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
                       138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
                       147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
                       158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
                       166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
                       174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                    239034
    Total RIPE prefixes after maximum aggregation:               112092
    RIPE Deaggregation factor:                                     2.13
Prefixes being announced from the RIPE address blocks:           235555
    Unique aggregates announced from the RIPE address blocks:    144580
RIPE Region origin ASes present in the Internet Routing Table:    28044
    RIPE Prefixes per ASN:                                         8.40
RIPE Region origin ASes announcing only one prefix:               12059
RIPE Region transit ASes present in the Internet Routing Table:    3907
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          29
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10369
Number of RIPE addresses announced to Internet:               711094656
    Equivalent to 42 /8s, 98 /16s and 113 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-213403
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                  111759
    Total LACNIC prefixes after maximum aggregation:              26575
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:         112716
    Unique aggregates announced from the LACNIC address blocks:   47103
LACNIC Region origin ASes present in the Internet Routing Table:  10786
    LACNIC Prefixes per ASN:                                      10.45
LACNIC Region origin ASes announcing only one prefix:              2654
LACNIC Region transit ASes present in the Internet Routing Table:  2099
Average LACNIC Region AS path length visible:                       4.8
    Max LACNIC Region AS path length visible:                        29
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8439
Number of LACNIC addresses announced to Internet:             176646144
    Equivalent to 10 /8s, 135 /16s and 104 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-272796 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                  26020
    Total AfriNIC prefixes after maximum aggregation:              5183
    AfriNIC Deaggregation factor:                                  5.02
Prefixes being announced from the AfriNIC address blocks:         33923
    Unique aggregates announced from the AfriNIC address blocks:  10826
AfriNIC Region origin ASes present in the Internet Routing Table:  1524
    AfriNIC Prefixes per ASN:                                     22.26
AfriNIC Region origin ASes announcing only one prefix:              529
AfriNIC Region transit ASes present in the Internet Routing Table:  305
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       32
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  857
Number of AfriNIC addresses announced to Internet:            108622592
    Equivalent to 6 /8s, 121 /16s and 115 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
                      

APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  9808        7923       9000      57  CMNET-GD Guangdong Mobile Communication
  7545        5816        785     675  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4707       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3608       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3535       1023      56  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        2802       1897      56  VNPT-AS-VN VNPT Corp, VN
  4766        2497      11121     584  KIXS-AS-KR Korea Telecom, KR
  9498        2360        502     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2129       1198      75  CNNIC-TENCENT-NET-AP Shenzhen Tencent C
  4755        2116        437     194  TATACOMM-AS TATA Communications formerl

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        5483       9667    2436  AMAZON-02, US
 11492        4687        310     757  CABLEONE, US
 22773        3981       3031     273  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3975        264      32  VIASAT-SP-BACKBONE, US
 16625        3581       1853    2490  AKAMAI-AS, US
  6327        3364       1313      62  SHAW, CA
 30036        2581        374     197  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2516       5029     452  CENTURYLINK-US-LEGACY-QWEST, US
  5972        2290        486     814  DNIC-ASBLK-05800-06055, US
 20115        2244       3048     506  CHARTER-20115, US

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6785       1726     143  UNI2-AS, ES
 20940        3760       3348     219  AKAMAI-ASN1, NL
 39891        3267        187      22  ALJAWWALSTC-AS, SA
  8551        2926        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2905       2278     894  ROSTELECOM-AS, RU
  9009        2483        260    1328  M247, GB
 34984        2219        357     595  TELLCOM-AS, TR
 61317        1763        265     971  ASDETUK www.heficed.com, GB
 58224        1627        889     570  TCI, IR
 13188        1610        100      27  TRIOLAN, UA

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151        8856       3461     583  Uninet S.A. de C.V., MX
 10620        3411        523     671  Telmex Colombia S.A., CO
 11830        2500        369      62  Instituto Costarricense de Electricidad
 13999        1822        415     474  Mega Cable, S.A. de C.V., MX
  6503        1509        359     477  Axtel, S.A.B. de C.V., MX
 28573        1457       2311     235  CLARO S.A., BR
  3816        1240        652     152  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 26615        1105       2351     134  TIM SA, BR
  6147        1087        369      22  Telefonica del Peru S.A.A., PE
 11664         982        194     437  Techtel LMDS Comunicaciones Interactiva

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1638        393      22  LINKdotNET-AS, EG
 24835        1464        503      31  RAYA-AS, EG
 36992        1310       1489     267  ETISALAT-MISR, EG
 36903        1183        537     110  MT-MPLS, MA
 29571         757         68      11  ORANGE-COTE-IVOIRE, CI
  6713         613       1863      34  IAM-AS, MA
 36935         583        522      40  Vodafone-, EG
 15399         500         49      28  WANANCHI-, KE
 37342         469         32       1  MOVITEL, MZ
  2018         337        319      74  TENET-1, ZA

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151        8856       3461     583  Uninet S.A. de C.V., MX
  9808        7923       9000      57  CMNET-GD Guangdong Mobile Communication
 12479        6785       1726     143  UNI2-AS, ES
  7545        5816        785     675  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        5483       9667    2436  AMAZON-02, US
  4538        4707       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4687        310     757  CABLEONE, US
 22773        3981       3031     273  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3975        264      32  VIASAT-SP-BACKBONE, US
 20940        3760       3348     219  AKAMAI-ASN1, NL

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        7923         7866  CMNET-GD Guangdong Mobile Communication Co.Ltd.
 12479        6785         6642  UNI2-AS, ES
  7545        5816         5141  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4707         4633  ERX-CERNET-BKB China Education and Research Net
  7155        3975         3943  VIASAT-SP-BACKBONE, US
 11492        4687         3930  CABLEONE, US
 22773        3981         3708  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3608         3588  VIETEL-AS-AP Viettel Group, VN
 20940        3760         3541  AKAMAI-ASN1, NL
  7713        3535         3479  TELKOMNET-AS-AP PT Telekomunikasi Indonesia, ID

Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
     18604  UNALLOCATED  8.25.204.0/24             3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24              174  COGENT-174, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
     23061  UNALLOCATED  8.39.119.0/24             3356  LEVEL3, US
      1782  UNALLOCATED  8.42.19.0/24             46887  LIGHTOWER, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
     40544  UNALLOCATED  12.0.33.0/24              6461  ZAYO-6461, US
     15132  UNALLOCATED  12.9.150.0/24             1239  SPRINTLINK, US

Complete listing at http://thyme.rand.apnic.net/current/data-badAS

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at http://thyme.rand.apnic.net/current/data-dsua

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.177.96.0/24       Origin:    397300  UNASSIGNED
23.177.96.0/24      Transit:     33387  NOCIX, US
27.100.7.0/24        Origin:     56096  UNASSIGNED
27.100.7.0/24       Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 
27.126.156.0/22      Origin:     55827  UNASSIGNED
27.126.156.0/22     Transit:      9930  TTNET-MY TIME dotCom Berhad No. 14, Jala
27.126.156.0/23      Origin:     55827  UNASSIGNED
27.126.156.0/23     Transit:      9930  TTNET-MY TIME dotCom Berhad No. 14, Jala

Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:41      /11:101     /12:303     
/13:589     /14:1195    /15:2004    /16:13421   /17:8204    /18:13966   
/19:25393   /20:42461   /21:50826   /22:107094  /23:91803   /24:501675  
/25:1447    /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
 12479        5719        6785  UNI2-AS, ES
 11492        3654        4687  CABLEONE, US
  6327        3175        3364  SHAW, CA
  8151        3168        8856  Uninet S.A. de C.V., MX
  7155        3063        3975  VIASAT-SP-BACKBONE, US
 22773        2981        3981  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2803        3267  ALJAWWALSTC-AS, SA
  8551        2392        2926  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2233        2581  MEDIACOM-ENTERPRISE-BUSINESS, US
 11830        1933        2500  Instituto Costarricense de Electricidad y Telec

Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:1909      2:1101      3:142       4:20        5:3577      6:84     
   7:5         8:1540      9:1        11:164      12:1747     13:387    
  14:2281     15:99       16:21       17:343      18:105      20:124    
  21:4        22:188      23:5007     24:2458     25:2        27:2505   
  29:19       31:2347     32:113      34:1        35:47       36:1718   
  37:3798     38:2202     39:640      40:165      41:3816     42:966    
  43:2075     44:281      45:15421    46:3665     47:349      48:7      
  49:1623     50:1817     51:97       52:1280     54:251      55:740    
  56:4        57:53       58:1732     59:1201     60:932      61:2295   
  62:2312     63:1956     64:5366     65:2363     66:4985     67:2875   
  68:1168     69:4124     70:1362     71:676      72:3152     74:2621   
  75:1500     76:699      77:2045     78:1668     79:2258     80:1865   
  81:1544     82:1364     83:1148     84:1293     85:2746     86:711    
  87:1805     88:969      89:3015     90:511      91:7388     92:1801   
  93:2550     94:3126     95:3484     96:1303     97:350      98:979    
  99:961     100:76      101:1048    102:1620    103:26811   104:3989   
 105:437     106:812     107:2280    108:728     109:3874    110:2032   
 111:3145    112:1935    113:1422    114:1467    115:1912    116:1892   
 117:2375    118:2328    119:1888    120:1510    121:1064    122:2520   
 123:2161    124:1600    125:2066    128:1340    129:1365    130:868    
 131:2020    132:758     133:363     134:1794    135:301     136:778    
 137:854     138:2380    139:1184    140:751     141:1207    142:1204   
 143:1342    144:1268    145:322     146:1492    147:1413    148:2163   
 149:1497    150:821     151:1082    152:1649    153:428     154:3007   
 155:1323    156:1680    157:1222    158:969     159:2010    160:2344   
 161:1238    162:3387    163:1097    164:1555    165:1414    166:595    
 167:1783    168:3638    169:701     170:4363    171:808     172:2718   
 173:2908    174:1018    175:1100    176:3215    177:4445    178:2973   
 179:1873    180:2263    181:2625    182:3217    183:2019    184:2417   
 185:18735   186:4225    187:3160    188:3314    189:2908    190:8721   
 191:1350    192:10706   193:8297    194:6748    195:4854    196:2898   
 197:2125    198:6007    199:5975    200:7369    201:5232    202:10571  
 203:10067   204:4597    205:3381    206:3740    207:3342    208:4021   
 209:4704    210:4184    211:2344    212:3748    213:3446    214:1166   
 215:60      216:6328    217:2581    218:1213    219:679     220:1953   
 221:963     222:856     223:2034   

End of report


Plus d'informations sur la liste de diffusion cmNOG