[cmNOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Ven 12 Nov 18:03:00 UTC 2021


This is an automated weekly mailing describing the state of the Internet
Global 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 http://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 13 Nov, 2021

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

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

BGP routing table entries examined:                              871023
    Prefixes after maximum aggregation (per Origin AS):          329373
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      421022
Total ASes present in the Internet Routing Table:                 72294
    Prefixes per ASN:                                             12.05
Origin-only ASes present in the Internet Routing Table:           62097
Origin ASes announcing only one prefix:                           25623
Transit ASes present in the Internet Routing Table:               10197
Transit-only ASes present in the Internet Routing Table:            356
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:               864
    Number of instances of unregistered ASNs:                       868
Number of 32-bit ASNs allocated by the RIRs:                      37805
Number of 32-bit ASNs visible in the Routing Table:               31370
Prefixes from 32-bit ASNs in the Routing Table:                  144615
Number of bogon 32-bit ASNs visible in the Routing Table:            25
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            427
Number of addresses announced to Internet:                   3071879936
    Equivalent to 183 /8s, 25 /16s and 43 /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:      290647

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

Prefixes being announced by APNIC Region ASes:                   230878
    Total APNIC prefixes after maximum aggregation:               64823
    APNIC Deaggregation factor:                                    3.56
Prefixes being announced from the APNIC address blocks:          225931
    Unique aggregates announced from the APNIC address blocks:    92904
APNIC Region origin ASes present in the Internet Routing Table:   12105
    APNIC Prefixes per ASN:                                       18.66
APNIC Region origin ASes announcing only one prefix:               3455
APNIC Region transit ASes present in the Internet Routing Table:   1696
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:   7278
Number of APNIC addresses announced to Internet:              773269632
    Equivalent to 46 /8s, 23 /16s and 40 /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:                    255823
    Total ARIN prefixes after maximum aggregation:               118120
    ARIN Deaggregation factor:                                     2.17
Prefixes being announced from the ARIN address blocks:           255977
    Unique aggregates announced from the ARIN address blocks:    122546
ARIN Region origin ASes present in the Internet Routing Table:    18948
    ARIN Prefixes per ASN:                                        13.51
ARIN Region origin ASes announcing only one prefix:                6861
ARIN Region transit ASes present in the Internet Routing Table:    1957
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          28
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4208
Number of ARIN addresses announced to Internet:              1301297408
    Equivalent to 77 /8s, 144 /16s and 57 /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:                    242723
    Total RIPE prefixes after maximum aggregation:               113535
    RIPE Deaggregation factor:                                     2.14
Prefixes being announced from the RIPE address blocks:           238900
    Unique aggregates announced from the RIPE address blocks:    146432
RIPE Region origin ASes present in the Internet Routing Table:    28141
    RIPE Prefixes per ASN:                                         8.49
RIPE Region origin ASes announcing only one prefix:               12143
RIPE Region transit ASes present in the Internet Routing Table:    3915
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          38
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10520
Number of RIPE addresses announced to Internet:               712386688
    Equivalent to 42 /8s, 118 /16s and 40 /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:                  113718
    Total LACNIC prefixes after maximum aggregation:              26952
    LACNIC Deaggregation factor:                                   4.22
Prefixes being announced from the LACNIC address blocks:         114593
    Unique aggregates announced from the LACNIC address blocks:   47437
LACNIC Region origin ASes present in the Internet Routing Table:  10791
    LACNIC Prefixes per ASN:                                      10.62
LACNIC Region origin ASes announcing only one prefix:              2615
LACNIC Region transit ASes present in the Internet Routing Table:  2129
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        53
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8463
Number of LACNIC addresses announced to Internet:             176442624
    Equivalent to 10 /8s, 132 /16s and 77 /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:                  27017
    Total AfriNIC prefixes after maximum aggregation:              5273
    AfriNIC Deaggregation factor:                                  5.12
Prefixes being announced from the AfriNIC address blocks:         35195
    Unique aggregates announced from the AfriNIC address blocks:  11318
AfriNIC Region origin ASes present in the Internet Routing Table:  1573
    AfriNIC Prefixes per ASN:                                     22.37
AfriNIC Region origin ASes announcing only one prefix:              549
AfriNIC Region transit ASes present in the Internet Routing Table:  308
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  901
Number of AfriNIC addresses announced to Internet:            108225280
    Equivalent to 6 /8s, 115 /16s and 99 /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        8699       9000      57  CHINAMOBILE-CN China Mobile Communicati
  7545        5858        787     685  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4665       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3591       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3498       1023      57  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3195       1896      54  VNPT-AS-VN VNPT Corp, VN
  4766        2507      11119     578  KIXS-AS-KR Korea Telecom, KR
  9498        2169        471     234  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2135       1198      75  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2124        429     204  TATACOMM-AS TATA Communications formerl

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        5889       9964    2541  AMAZON-02, US
 11492        4633        307     804  CABLEONE, US
 22773        4047       3049     380  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3950        264      30  VIASAT-SP-BACKBONE, US
 16625        3665       1891    2547  AKAMAI-AS, US
  6327        3390       1318      69  SHAW, CA
   749        2890      50784    2146  DNIC-AS-00749, US
 30036        2599        375     147  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2523       5027     442  CENTURYLINK-US-LEGACY-QWEST, US
  7018        2246      24164    1435  ATT-INTERNET4, US

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6881       1725     146  UNI2-AS, ES
 20940        3925       3348     218  AKAMAI-ASN1, NL
 39891        3271        187      23  ALJAWWALSTC-AS, SA
  8551        3089        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2928       2279     898  ROSTELECOM-AS, RU
  9009        2510        258    1320  M247, GB
 34984        2199        354     599  TELLCOM-AS, TR
 58224        1738        912     587  TCI, IR
 61317        1630        213     918  ASDETUK www.heficed.com, GB
 13188        1610        100      27  TRIOLAN, UA

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10629       3464     576  Uninet S.A. de C.V., MX
 10620        3248        490     830  Telmex Colombia S.A., CO
 11830        2470        369      62  Instituto Costarricense de Electricidad
 13999        1641        286     453  Mega Cable, S.A. de C.V., MX
  6503        1530        359     472  Axtel, S.A.B. de C.V., MX
 28573        1451       2313     250  CLARO S.A., BR
  3816        1240        651     153  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 26615        1132       2351     138  TIM SA, BR
  6147        1092        370      21  Telefonica del Peru S.A.A., PE
 11664         970        188     442  Techtel LMDS Comunicaciones Interactiva

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1638        393      21  LINKdotNET-AS, EG
 24835        1536        507      33  RAYA-AS, EG
 36992        1285       1430     270  ETISALAT-MISR, EG
 36903        1183        537     110  MT-MPLS, MA
 29571         814         68      11  ORANGE-COTE-IVOIRE, CI
 36935         702        523      44  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         516         50      31  WANANCHI-, KE
 37342         470         32       1  MOVITEL, MZ
 23889         429        232      16  MauritiusTelecom, MU

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10629       3464     576  Uninet S.A. de C.V., MX
  9808        8699       9000      57  CHINAMOBILE-CN China Mobile Communicati
 12479        6881       1725     146  UNI2-AS, ES
 16509        5889       9964    2541  AMAZON-02, US
  7545        5858        787     685  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4665       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4633        307     804  CABLEONE, US
 22773        4047       3049     380  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3950        264      30  VIASAT-SP-BACKBONE, US
 20940        3925       3348     218  AKAMAI-ASN1, NL

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

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

   ASN  No of nets  Net Savings  Description
  9808        8699         8642  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6881         6735  UNI2-AS, ES
  7545        5858         5173  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4665         4591  ERX-CERNET-BKB China Education and Research Net
  7155        3950         3920  VIASAT-SP-BACKBONE, US
 11492        4633         3829  CABLEONE, US
 20940        3925         3707  AKAMAI-ASN1, NL
 22773        4047         3667  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3591         3571  VIETEL-AS-AP Viettel Group, VN
  7713        3498         3441  TELKOMNET-AS-AP PT Telekomunikasi Indonesia, ID

Complete listing at http://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
     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
    395056  UNALLOCATED  8.45.133.0/24             3356  LEVEL3, US

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

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

Unassigned Network     ASN Information  AS Name
23.132.208.0/24      Origin:      7850  CITYLINKFIBER, US
23.132.208.0/24     Transit:     15164  UPNLLC, US
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

Complete listing at http://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      /11:99      /12:300     
/13:597     /14:1214    /15:2044    /16:13567   /17:8258    /18:13918   
/19:25286   /20:43031   /21:50861   /22:107243  /23:93940   /24:509146  
/25:1449    /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        5840        6881  UNI2-AS, ES
  8151        4426       10629  Uninet S.A. de C.V., MX
 11492        3586        4633  CABLEONE, US
  6327        3198        3390  SHAW, CA
  7155        3040        3950  VIASAT-SP-BACKBONE, US
 22773        3010        4047  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2807        3271  ALJAWWALSTC-AS, SA
  8551        2554        3089  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2253        2599  MEDIACOM-ENTERPRISE-BUSINESS, US
 11830        1921        2470  Instituto Costarricense de Electricidad y Telec

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

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

   1:1920      2:1048      3:145       4:18        5:3725      6:100    
   7:5         8:1549      9:1        11:172      12:1712     13:405    
  14:2267     15:123      16:30       17:375      18:125      20:143    
  21:4        22:188      23:5308     24:2389     25:2        27:2548   
  29:19       31:2380     32:106      34:1        35:47       36:1728   
  37:3910     38:2343     39:636      40:149      41:3872     42:1055   
  43:2082     44:290      45:15654    46:3784     47:323      49:1680   
  50:1876     51:103      52:1332     54:284      55:737      56:4      
  57:55       58:1741     59:1127     60:937      61:2246     62:2367   
  63:1957     64:5416     65:2347     66:4945     67:2874     68:1174   
  69:4086     70:1348     71:679      72:3090     74:2612     75:1499   
  76:709      77:2100     78:1745     79:2391     80:1872     81:1511   
  82:1411     83:1171     84:1300     85:2822     86:703      87:1877   
  88:973      89:3097     90:501      91:7463     92:1913     93:2571   
  94:3190     95:3593     96:1302     97:348      98:980      99:918    
 100:76      101:1044    102:1770    103:27411   104:4117    105:436    
 106:844     107:2412    108:748     109:3930    110:2059    111:3138   
 112:1952    113:1498    114:1538    115:1934    116:1875    117:2429   
 118:2328    119:1844    120:1613    121:1038    122:2535    123:2133   
 124:1597    125:2032    128:1376    129:1113    130:912     131:2072   
 132:749     133:364     134:1905    135:332     136:793     137:863    
 138:2423    139:1212    140:831     141:1323    142:1240    143:1340   
 144:1273    145:327     146:1585    147:1463    148:2235    149:1585   
 150:849     151:1080    152:1669    153:436     154:3292    155:1362   
 156:1819    157:1192    158:986     159:2012    160:2325    161:1262   
 162:3388    163:1112    164:1660    165:1497    166:610     167:1659   
 168:3654    169:681     170:4273    171:805     172:2838    173:3042   
 174:1002    175:1125    176:3395    177:4509    178:3008    179:1926   
 180:2260    181:2617    182:3159    183:1928    184:2417    185:18990  
 186:4234    187:3516    188:3628    189:3080    190:8723    191:1314   
 192:10974   193:8402    194:6867    195:4890    196:2878    197:2236   
 198:6032    199:6002    200:7404    201:5682    202:10470   203:10038  
 204:4496    205:3403    206:3848    207:3392    208:4006    209:4689   
 210:4223    211:2436    212:3788    213:3369    214:1159    215:64     
 216:6383    217:2622    218:1220    219:613     220:1955    221:986    
 222:852     223:2128   

End of report


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