[cmNOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Mar 22 18:02:19 UTC 2024


This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
UKNOF, 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>.

IPv4 Routing Table Report   04:00 +10GMT Sat 23 Mar, 2024

  BGP Table (Global) as seen in Japan.

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

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

BGP routing table entries examined:                              940133
    Prefixes after maximum aggregation (per Origin AS):          359192
    Deaggregation factor:                                          2.62
    Unique aggregates announced (without unneeded subnets):      458582
Total ASes present in the Internet Routing Table:                 75531
    Prefixes per ASN:                                             12.45
Origin-only ASes present in the Internet Routing Table:           64777
Origin ASes announcing only one prefix:                           26587
Transit ASes present in the Internet Routing Table:               10754
Transit-only ASes present in the Internet Routing Table:            492
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:              1062
    Number of instances of unregistered ASNs:                      1064
Number of 32-bit ASNs allocated by the RIRs:                      43892
Number of 32-bit ASNs visible in the Routing Table:               36072
Prefixes from 32-bit ASNs in the Routing Table:                  183349
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:            593
Number of addresses announced to Internet:                   3028765568
    Equivalent to 180 /8s, 135 /16s and 75 /24s
    Percentage of available address space announced:               81.8
    Percentage of allocated address space announced:               81.8
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.6
Total number of prefixes smaller than registry allocations:      310128

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

Prefixes being announced by APNIC Region ASes:                   249324
    Total APNIC prefixes after maximum aggregation:               73160
    APNIC Deaggregation factor:                                    3.41
Prefixes being announced from the APNIC address blocks:          241895
    Unique aggregates announced from the APNIC address blocks:   100148
APNIC Region origin ASes present in the Internet Routing Table:   14062
    APNIC Prefixes per ASN:                                       17.20
APNIC Region origin ASes announcing only one prefix:               4250
APNIC Region transit ASes present in the Internet Routing Table:   1881
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         32
Number of APNIC region 32-bit ASNs visible in the Routing Table:   9436
Number of APNIC addresses announced to Internet:              760850304
    Equivalent to 45 /8s, 89 /16s and 167 /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, 131072-153913
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:                    274554
    Total ARIN prefixes after maximum aggregation:               124106
    ARIN Deaggregation factor:                                     2.21
Prefixes being announced from the ARIN address blocks:           279363
    Unique aggregates announced from the ARIN address blocks:    132698
ARIN Region origin ASes present in the Internet Routing Table:    19123
    ARIN Prefixes per ASN:                                        14.61
ARIN Region origin ASes announcing only one prefix:                6963
ARIN Region transit ASes present in the Internet Routing Table:    1983
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          25
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4868
Number of ARIN addresses announced to Internet:              1269832448
    Equivalent to 75 /8s, 176 /16s and 27 /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:                    263560
    Total RIPE prefixes after maximum aggregation:               126198
    RIPE Deaggregation factor:                                     2.09
Prefixes being announced from the RIPE address blocks:           258582
    Unique aggregates announced from the RIPE address blocks:    162667
RIPE Region origin ASes present in the Internet Routing Table:    28562
    RIPE Prefixes per ASN:                                         9.05
RIPE Region origin ASes announcing only one prefix:               12098
RIPE Region transit ASes present in the Internet Routing Table:    3974
Average RIPE Region AS path length visible:                         4.5
    Max RIPE Region AS path length visible:                          39
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11666
Number of RIPE addresses announced to Internet:               714792704
    Equivalent to 42 /8s, 154 /16s and 223 /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
                       196608-216475
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:                  121039
    Total LACNIC prefixes after maximum aggregation:              28895
    LACNIC Deaggregation factor:                                   4.19
Prefixes being announced from the LACNIC address blocks:         119402
    Unique aggregates announced from the LACNIC address blocks:   49606
LACNIC Region origin ASes present in the Internet Routing Table:  11061
    LACNIC Prefixes per ASN:                                      10.79
LACNIC Region origin ASes announcing only one prefix:              2624
LACNIC Region transit ASes present in the Internet Routing Table:  2377
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8918
Number of LACNIC addresses announced to Internet:             177260032
    Equivalent to 10 /8s, 144 /16s and 198 /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:                  30594
    Total AfriNIC prefixes after maximum aggregation:              6127
    AfriNIC Deaggregation factor:                                  4.99
Prefixes being announced from the AfriNIC address blocks:         40298
    Unique aggregates announced from the AfriNIC address blocks:  12989
AfriNIC Region origin ASes present in the Internet Routing Table:  1819
    AfriNIC Prefixes per ASN:                                     22.15
AfriNIC Region origin ASes announcing only one prefix:              652
AfriNIC Region transit ASes present in the Internet Routing Table:  358
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       28
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1184
Number of AfriNIC addresses announced to Internet:            105718272
    Equivalent to 6 /8s, 77 /16s and 34 /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        9860       8742      66  CHINAMOBILE-CN China Mobile Communicati
  7545        5655        777     674  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4932       4192      76  ERX-CERNET-BKB China Education and Rese
  7552        3859       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3594       1043      64  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3523        495     253  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3320       1870      95  VNPT-AS-VN VNPT Corp, VN
 24560        2764        864     363  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2309      11259     573  KIXS-AS-KR Korea Telecom, KR
  4755        2192        434     194  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        9723      11352    3409  AMAZON-02, US
 11492        4593        305     622  CABLEONE, US
  7155        4181        288      96  VIASAT-SP-BACKBONE, US
 22773        3608       3063     301  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3603       1320      75  SHAW, CA
   174        3386       6652     699  COGENT-174, US
   749        3191      54916    2443  DNIC-AS-00749, US
 16625        3174       1365    2266  AKAMAI-AS, US
   367        2924       3631    1389  DNIC-ASBLK-00306-00371, US
396982        2762       3641     411  GOOGLE-CLOUD-PLATFORM, 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        7701       1714     147  UNI2-AS, ES
 39891        4758        286      60  ALJAWWALSTC-AS, SA
 20940        3873       3396     128  AKAMAI-ASN1, NL
  9009        3263        283    1597  M247, RO
 12389        2977       2303     903  ROSTELECOM-AS, RU
  8551        2646        368      35  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 34984        2341        363     589  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
  8452        1524       1852      14  TE-AS TE-AS, EG
 44477        1496         98     708  STARK-INDUSTRIES, GB

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       12363       3320     489  UNINET, MX
 10620        3526        497     892  Telmex Colombia S.A., CO
 13999        2514        342     658  Mega Cable, S.A. de C.V., MX
 11830        2000        369      64  Instituto Costarricense de Electricidad
 28573        1344       2319     241  Claro NXT Telecomunicacoes Ltda, BR
  3816        1312        788     199  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1204        348     492  Axtel, S.A.B. de C.V., MX
 11664        1142        179     431  Techtel LMDS Comunicaciones Interactiva
  6147        1089        369      22  Telefonica del Peru S.A.A., PE
 26615        1071       2503      53  TIM SA, BR

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
 24835        1522        505      26  RAYA-AS, EG
 24863        1504        389      20  LINKdotNET-AS, EG
 36992        1368       1519     281  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1203         76      60  ORANGE-COTE-IVOIRE, CI
 36935         836        521      42  Vodafone-, EG
  6713         554       1861      34  IAM-AS, MA
 15399         529         56      54  WANANCHI-, KE
 36914         490         82       3  KENET-AS, KE
 24757         428         73       5  EthioNet-AS, ET

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       12363       3320     489  UNINET, MX
  9808        9860       8742      66  CHINAMOBILE-CN China Mobile Communicati
 16509        9723      11352    3409  AMAZON-02, US
 12479        7701       1714     147  UNI2-AS, ES
  7545        5655        777     674  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4932       4192      76  ERX-CERNET-BKB China Education and Rese
 39891        4758        286      60  ALJAWWALSTC-AS, SA
 11492        4593        305     622  CABLEONE, US
  7155        4181        288      96  VIASAT-SP-BACKBONE, US
 20940        3873       3396     128  AKAMAI-ASN1, NL

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

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

   ASN  No of nets  Net Savings  Description
  9808        9860         9794  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7701         7554  UNI2-AS, ES
 16509        9723         6314  AMAZON-02, US
  7545        5655         4981  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4932         4856  ERX-CERNET-BKB China Education and Research Net
 39891        4758         4698  ALJAWWALSTC-AS, SA
  7155        4181         4085  VIASAT-SP-BACKBONE, US
 11492        4593         3971  CABLEONE, US
  7552        3859         3839  VIETEL-AS-AP Viettel Group, VN
 20940        3873         3745  AKAMAI-ASN1, NL

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
     65536  DOCUMENT     5.102.30.0/24            65512  -Private Use AS-, ZZ
     33123  UNALLOCATED  8.10.69.0/24               174  COGENT-174, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     40493  UNALLOCATED  8.17.26.0/24              3356  LEVEL3, US
     46639  UNALLOCATED  8.17.66.0/24               701  UUNET, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  CROWNCASTLE-AS46887, US
    396894  UNALLOCATED  8.28.201.0/24            46887  CROWNCASTLE-AS46887, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, 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
23.140.216.0/24      Origin:     27176  DATAWAGON, US
23.140.216.0/24     Transit:     20278  NEXEON, US
23.141.0.0/24        Origin:    395350  RESERVED, ZZ
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.176.160.0/24      Origin:    397327  RESERVED, ZZ
23.176.160.0/24     Transit:     19108  SUDDENLINK-COMMUNICATIONS, US
27.0.192.0/22        Origin:    138415  HENGDA-HK HENGDA NETWORK LIMITED, HK
27.0.192.0/22       Transit:     51847  NEAROUTE, HK
27.0.192.0/24        Origin:    138195  MOACKCOLTD-AS-AP MOACK.Co.LTD, KR
27.0.192.0/24       Transit:      6939  HURRICANE, US

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       /9:14      /10:37      /11:95      /12:298     
/13:582     /14:1192    /15:2066    /16:13285   /17:8243    /18:13750   
/19:24867   /20:44061   /21:51575   /22:111016  /23:98421   /24:569884  
/25:731     /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        6815        7701  UNI2-AS, ES
  8151        6382       12363  UNINET, MX
 11492        3506        4593  CABLEONE, US
 39891        3440        4758  ALJAWWALSTC-AS, SA
  6327        3400        3603  SHAW, CA
  7155        3125        4181  VIASAT-SP-BACKBONE, US
 22773        2645        3608  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2148        2491  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2132        3526  Telmex Colombia S.A., CO
  8551        2122        2646  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo

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

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

   1:1641      2:1476      3:316       4:6         5:4516      6:162    
   7:6         8:1525      9:1        11:172      12:1467     13:379    
  14:2405     15:318      16:210      17:370      18:750      20:355    
  21:4        22:188      23:6631     24:2711     25:2        27:2569   
  29:19       31:2625     32:49       34:60       35:126      36:2228   
  37:4495     38:7103     39:894      40:125      41:4083     42:983    
  43:2353     44:312      45:16925    46:4390     47:297      49:1944   
  50:1902     51:573      52:1578     54:308      55:973      56:5      
  57:159      58:1878     59:1185     60:1025     61:2587     62:2694   
  63:1908     64:5527     65:2318     66:4723     67:3065     68:1334   
  69:4078     70:1198     71:574      72:2894     74:2588     75:1550   
  76:628      77:2420     78:1844     79:2471     80:2160     81:1939   
  82:1511     83:1287     84:1651     85:3076     86:826      87:2265   
  88:1241     89:4042     90:686      91:8030     92:2191     93:2647   
  94:3655     95:4147     96:1303     97:312      98:1045     99:743    
 100:92      101:1179    102:3064    103:32557   104:4797    105:631    
 106:941     107:2758    108:1133    109:4077    110:2141    111:3255   
 112:2069    113:1560    114:1789    115:1999    116:1891    117:2616   
 118:2379    119:1959    120:1814    121:1334    122:2698    123:2225   
 124:1622    125:2877    126:32      128:1474    129:942     130:1089   
 131:1821    132:806     133:410     134:1721    135:314     136:944    
 137:1054    138:2802    139:1565    140:1381    141:1361    142:1580   
 143:1488    144:1013    145:345     146:2025    147:1717    148:2492   
 149:2583    150:1034    151:1339    152:1981    153:523     154:5906   
 155:1377    156:2232    157:1628    158:1078    159:2264    160:2604   
 161:1638    162:3598    163:1723    164:1629    165:2124    166:1071   
 167:1767    168:3937    169:790     170:4713    171:1024    172:3826   
 173:3042    174:908     175:1199    176:3677    177:4510    178:3582   
 179:2239    180:2362    181:3668    182:3410    183:1805    184:2267   
 185:20637   186:4894    187:4451    188:4044    189:4075    190:9325   
 191:1467    192:11002   193:9051    194:7459    195:5260    196:3162   
 197:2391    198:6017    199:7531    200:8007    201:6330    202:10514  
 203:10167   204:4572    205:3761    206:4497    207:3488    208:4138   
 209:5045    210:4661    211:2578    212:4293    213:3377    214:1088   
 215:50      216:6772    217:2815    218:1361    219:581     220:2053   
 221:1030    222:876     223:2238   

End of report


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