[cmNOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Ven 24 Dťc 18:02:58 UTC 2021


This is an automated weekly mailing describing the state of the Gobal
IPv4 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 https://thyme.apnic.net.

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

Global IPv4 Routing Table Report   04:00 +10GMT Sat 25 Dec, 2021

  BGP Table  as seen in Japan.

Report Website:     https://thyme.apnic.net
Detailed Analysis:  https://thyme.apnic.net/current/

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

BGP routing table entries examined:                              885163
    Prefixes after maximum aggregation (per Origin AS):          332925
    Deaggregation factor:                                          2.66
    Unique aggregates announced (without unneeded subnets):      424656
    Number of IPv4 prefixes with ROAs (including AS0):           252939
Total ASes present in the Internet Routing Table:                 72523
    Prefixes per ASN:                                             12.21
Origin-only ASes present in the Internet Routing Table:           62238
Origin ASes announcing only one prefix:                           25678
Transit ASes present in the Internet Routing Table:               10285
Transit-only ASes present in the Internet Routing Table:            371
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      53
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               920
    Number of instances of unregistered ASNs:                       922
Number of 32-bit ASNs allocated by the RIRs:                      38178
Number of 32-bit ASNs visible in the Routing Table:               31711
Prefixes from 32-bit ASNs in the Routing Table:                  147279
Number of bogon 32-bit ASNs visible in the Routing Table:            19
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            724
Number of addresses announced to Internet:                   3073270528
    Equivalent to 183 /8s, 46 /16s and 99 /24s
    Percentage of available address space announced:               83.0
    Percentage of allocated address space announced:               83.0
    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:      299290

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

Prefixes being announced by APNIC Region ASes:                   233109
    Total APNIC prefixes after maximum aggregation:               65222
    APNIC Deaggregation factor:                                    3.57
Prefixes being announced from the APNIC address blocks:          227930
    Unique aggregates announced from the APNIC address blocks:    93654
APNIC Region origin ASes present in the Internet Routing Table:   12197
    APNIC Prefixes per ASN:                                       18.69
APNIC Region origin ASes announcing only one prefix:               3466
APNIC Region transit ASes present in the Internet Routing Table:   1712
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7383
Number of APNIC addresses announced to Internet:              773501824
    Equivalent to 46 /8s, 26 /16s and 179 /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, 131072-151865
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:                    257192
    Total ARIN prefixes after maximum aggregation:               118517
    ARIN Deaggregation factor:                                     2.17
Prefixes being announced from the ARIN address blocks:           256825
    Unique aggregates announced from the ARIN address blocks:    122511
ARIN Region origin ASes present in the Internet Routing Table:    18930
    ARIN Prefixes per ASN:                                        13.57
ARIN Region origin ASes announcing only one prefix:                6857
ARIN Region transit ASes present in the Internet Routing Table:    1951
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          34
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4263
Number of ARIN addresses announced to Internet:              1300922624
    Equivalent to 77 /8s, 138 /16s and 129 /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:                    252861
    Total RIPE prefixes after maximum aggregation:               115963
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           249288
    Unique aggregates announced from the RIPE address blocks:    148383
RIPE Region origin ASes present in the Internet Routing Table:    28169
    RIPE Prefixes per ASN:                                         8.85
RIPE Region origin ASes announcing only one prefix:               12148
RIPE Region transit ASes present in the Internet Routing Table:    3942
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          32
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10587
Number of RIPE addresses announced to Internet:               713691520
    Equivalent to 42 /8s, 138 /16s and 17 /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:                  113477
    Total LACNIC prefixes after maximum aggregation:              27242
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:         114273
    Unique aggregates announced from the LACNIC address blocks:   47761
LACNIC Region origin ASes present in the Internet Routing Table:  10881
    LACNIC Prefixes per ASN:                                      10.50
LACNIC Region origin ASes announcing only one prefix:              2655
LACNIC Region transit ASes present in the Internet Routing Table:  2195
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        53
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8560
Number of LACNIC addresses announced to Internet:             176297728
    Equivalent to 10 /8s, 130 /16s and 23 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + 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:                  27604
    Total AfriNIC prefixes after maximum aggregation:              5293
    AfriNIC Deaggregation factor:                                  5.22
Prefixes being announced from the AfriNIC address blocks:         36123
    Unique aggregates announced from the AfriNIC address blocks:  11694
AfriNIC Region origin ASes present in the Internet Routing Table:  1586
    AfriNIC Prefixes per ASN:                                     22.78
AfriNIC Region origin ASes announcing only one prefix:              552
AfriNIC Region transit ASes present in the Internet Routing Table:  312
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       28
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  918
Number of AfriNIC addresses announced to Internet:            108400128
    Equivalent to 6 /8s, 118 /16s and 14 /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        8744       9000      57  CHINAMOBILE-CN China Mobile Communicati
  7545        5837        787     681  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4692       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3602       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3481       1038      51  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3245       1880      58  VNPT-AS-VN VNPT Corp, VN
  4766        2475      11119     576  KIXS-AS-KR Korea Telecom, KR
  9498        2211        475     235  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2136       1198      75  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2122        429     204  TATACOMM-AS TATA Communications formerl

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        6058      10131    2597  AMAZON-02, US
 11492        4580        303     821  CABLEONE, US
 22773        4031       3036     388  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3950        264      30  VIASAT-SP-BACKBONE, US
 16625        3657       1885    2555  AKAMAI-AS, US
  6327        3391       1319      65  SHAW, CA
   749        2890      50784    2146  DNIC-AS-00749, US
 30036        2603        374     146  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2523       5043     432  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2241       3033     501  CHARTER-20115, US

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6840       1733     150  UNI2-AS, ES
  9121        6670       1692      17  TTNET, TR
 20940        3858       3348     210  AKAMAI-ASN1, NL
  8551        3554        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 39891        3271        187      23  ALJAWWALSTC-AS, SA
 12389        2949       2284     902  ROSTELECOM-AS, RU
  9009        2552        263    1360  M247, GB
 34984        2205        355     600  TELLCOM-AS, TR
 47331        1977        319    1509  TTNET, TR
 58224        1772        922     577  TCI, IR

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10571       3451     583  Uninet S.A. de C.V., MX
 10620        3263        491     836  Telmex Colombia S.A., CO
 11830        2466        369      62  Instituto Costarricense de Electricidad
 13999        1638        283     462  Mega Cable, S.A. de C.V., MX
  6503        1440        355     522  Axtel, S.A.B. de C.V., MX
 28573        1401       2324     256  CLARO S.A., BR
  3816        1244        657     147  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 26615        1140       2350     138  TIM SA, BR
  6147        1090        369      21  Telefonica del Peru S.A.A., PE
 11664         994        191     443  Techtel LMDS Comunicaciones Interactiva

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1628        393      21  LINKdotNET-AS, EG
 24835        1548        499      32  RAYA-AS, EG
 36992        1294       1462     268  ETISALAT-MISR, EG
 36903        1195        543     114  MT-MPLS, MA
 29571         852         68      11  ORANGE-COTE-IVOIRE, CI
 36935         685        521      39  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         517         50      33  WANANCHI-, KE
 37342         470         32       1  MOVITEL, MZ
 23889         429        232      16  MauritiusTelecom, MU

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10571       3451     583  Uninet S.A. de C.V., MX
  9808        8744       9000      57  CHINAMOBILE-CN China Mobile Communicati
 12479        6840       1733     150  UNI2-AS, ES
  9121        6670       1692      17  TTNET, TR
 16509        6058      10131    2597  AMAZON-02, US
  7545        5837        787     681  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4692       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4580        303     821  CABLEONE, US
 22773        4031       3036     388  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3950        264      30  VIASAT-SP-BACKBONE, US

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

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

   ASN  No of nets  Net Savings  Description
  9808        8744         8687  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6840         6690  UNI2-AS, ES
  9121        6670         6653  TTNET, TR
  7545        5837         5156  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4692         4618  ERX-CERNET-BKB China Education and Research Net
  7155        3950         3920  VIASAT-SP-BACKBONE, US
 11492        4580         3759  CABLEONE, US
 20940        3858         3648  AKAMAI-ASN1, NL
 22773        4031         3643  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3602         3582  VIETEL-AS-AP Viettel Group, VN

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

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

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     46990  UNALLOCATED  8.5.242.0/23              3356  LEVEL3, US
     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
      1782  UNALLOCATED  8.42.19.0/24             46887  LIGHTOWER, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
    395056  UNALLOCATED  8.45.133.0/24             3356  LEVEL3, US
     32306  UNALLOCATED  8.46.80.0/24             33652  CMCS, US

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

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at https://thyme.apnic.net/current/data-spar

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
23.252.160.0/24      Origin:    398968  GROUP-IID-01, US
23.252.160.0/24     Transit:      1299  TWELVE99 Twelve99, Telia Carrier, SE
23.252.161.0/24      Origin:    398968  GROUP-IID-01, US
23.252.161.0/24     Transit:      1299  TWELVE99 Twelve99, Telia Carrier, SE
23.252.162.0/24      Origin:    398968  GROUP-IID-01, US
23.252.162.0/24     Transit:      1299  TWELVE99 Twelve99, Telia Carrier, SE
23.252.163.0/24      Origin:    398968  GROUP-IID-01, US
23.252.163.0/24     Transit:      1299  TWELVE99 Twelve99, Telia Carrier, SE

Complete listing at https://thyme.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     /12:304     
/13:592     /14:1213    /15:2040    /16:13563   /17:8327    /18:13920   
/19:25271   /20:43287   /21:52000   /22:108460  /23:95438   /24:519801  
/25:776     /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
  9121        5859        6670  TTNET, TR
 12479        5783        6840  UNI2-AS, ES
  8151        4396       10571  Uninet S.A. de C.V., MX
 11492        3533        4580  CABLEONE, US
  6327        3199        3391  SHAW, CA
  7155        3040        3950  VIASAT-SP-BACKBONE, US
  8551        3019        3554  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        3006        4031  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2807        3271  ALJAWWALSTC-AS, SA
 30036        2258        2603  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1902      2:989       3:148       4:18        5:3687      6:102    
   7:5         8:1563      9:1        11:172      12:1699     13:409    
  14:2314     15:135      16:35       17:373      18:130      20:143    
  21:4        22:188      23:5364     24:2355     25:4        27:2576   
  29:19       31:2434     32:106      34:1        35:49       36:1728   
  37:3909     38:2416     39:710      40:148      41:3915     42:1052   
  43:2134     44:295      45:16056    46:3865     47:300      49:1652   
  50:1906     51:106      52:1352     54:289      55:731      56:4      
  57:59       58:1752     59:1138     60:947      61:2244     62:2419   
  63:1943     64:5404     65:2331     66:4927     67:2921     68:1185   
  69:4165     70:1340     71:676      72:3064     74:2618     75:1505   
  76:711      77:2131     78:3820     79:2773     80:1910     81:1647   
  82:1422     83:1194     84:1319     85:3572     86:692      87:1898   
  88:2621     89:3125     90:493      91:7520     92:1889     93:2572   
  94:3273     95:4516     96:1298     97:344      98:989      99:878    
 100:75      101:1049    102:1885    103:28048   104:4089    105:453    
 106:852     107:2413    108:750     109:4043    110:2057    111:3168   
 112:1938    113:1491    114:1558    115:1934    116:1890    117:2504   
 118:2308    119:1878    120:1625    121:1007    122:2527    123:2125   
 124:1618    125:2078    128:1388    129:1145    130:905     131:2071   
 132:753     133:365     134:1930    135:283     136:845     137:861    
 138:2441    139:1219    140:863     141:1320    142:1235    143:1412   
 144:1228    145:333     146:1748    147:1453    148:2213    149:1608   
 150:866     151:1078    152:1846    153:443     154:3577    155:1361   
 156:1874    157:1214    158:993     159:1999    160:2376    161:1281   
 162:3430    163:1189    164:1677    165:1543    166:619     167:1675   
 168:3657    169:689     170:4322    171:824     172:2919    173:3043   
 174:1005    175:1123    176:3433    177:4506    178:3022    179:1983   
 180:2340    181:2704    182:3198    183:1921    184:2416    185:19163  
 186:4227    187:3499    188:3666    189:3121    190:8843    191:1314   
 192:10990   193:8495    194:6943    195:4984    196:2907    197:2384   
 198:5997    199:5971    200:7437    201:5696    202:10503   203:10085  
 204:4506    205:3408    206:3847    207:3352    208:3996    209:4591   
 210:4247    211:2443    212:3915    213:3358    214:1152    215:64     
 216:6400    217:2636    218:1212    219:608     220:1968    221:1018   
 222:843     223:2146   

End of report


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