[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Dec 23 18:03:05 UTC 2022


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
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 24 Dec, 2022

  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:                              917301
    Prefixes after maximum aggregation (per Origin AS):          346961
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      444192
Total ASes present in the Internet Routing Table:                 73978
    Prefixes per ASN:                                             12.40
Origin-only ASes present in the Internet Routing Table:           63487
Origin ASes announcing only one prefix:                           26133
Transit ASes present in the Internet Routing Table:               10491
Transit-only ASes present in the Internet Routing Table:            427
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               999
    Number of instances of unregistered ASNs:                      1008
Number of 32-bit ASNs allocated by the RIRs:                      40962
Number of 32-bit ASNs visible in the Routing Table:               33921
Prefixes from 32-bit ASNs in the Routing Table:                  165300
Number of bogon 32-bit ASNs visible in the Routing Table:            28
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            515
Number of addresses announced to Internet:                   3066232832
    Equivalent to 182 /8s, 195 /16s and 0 /24s
    Percentage of available address space announced:               82.8
    Percentage of allocated address space announced:               82.8
    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:      311651

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

Prefixes being announced by APNIC Region ASes:                   239767
    Total APNIC prefixes after maximum aggregation:               68430
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          234633
    Unique aggregates announced from the APNIC address blocks:    97437
APNIC Region origin ASes present in the Internet Routing Table:   13190
    APNIC Prefixes per ASN:                                       17.79
APNIC Region origin ASes announcing only one prefix:               3856
APNIC Region transit ASes present in the Internet Routing Table:   1775
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         25
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8446
Number of APNIC addresses announced to Internet:              773768320
    Equivalent to 46 /8s, 30 /16s and 196 /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:                    267514
    Total ARIN prefixes after maximum aggregation:               121704
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           268966
    Unique aggregates announced from the ARIN address blocks:    129578
ARIN Region origin ASes present in the Internet Routing Table:    19050
    ARIN Prefixes per ASN:                                        14.12
ARIN Region origin ASes announcing only one prefix:                6966
ARIN Region transit ASes present in the Internet Routing Table:    1952
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          34
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4706
Number of ARIN addresses announced to Internet:              1288525824
    Equivalent to 76 /8s, 205 /16s and 88 /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:                    263138
    Total RIPE prefixes after maximum aggregation:               121987
    RIPE Deaggregation factor:                                     2.16
Prefixes being announced from the RIPE address blocks:           260049
    Unique aggregates announced from the RIPE address blocks:    155767
RIPE Region origin ASes present in the Internet Routing Table:    28197
    RIPE Prefixes per ASN:                                         9.22
RIPE Region origin ASes announcing only one prefix:               12038
RIPE Region transit ASes present in the Internet Routing Table:    3958
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10942
Number of RIPE addresses announced to Internet:               719480192
    Equivalent to 42 /8s, 226 /16s and 101 /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:                  117498
    Total LACNIC prefixes after maximum aggregation:              28397
    LACNIC Deaggregation factor:                                   4.14
Prefixes being announced from the LACNIC address blocks:         116798
    Unique aggregates announced from the LACNIC address blocks:   48974
LACNIC Region origin ASes present in the Internet Routing Table:  11008
    LACNIC Prefixes per ASN:                                      10.61
LACNIC Region origin ASes announcing only one prefix:              2673
LACNIC Region transit ASes present in the Internet Routing Table:  2280
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8774
Number of LACNIC addresses announced to Internet:             176038656
    Equivalent to 10 /8s, 126 /16s and 35 /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:                  28385
    Total AfriNIC prefixes after maximum aggregation:              5689
    AfriNIC Deaggregation factor:                                  4.99
Prefixes being announced from the AfriNIC address blocks:         36340
    Unique aggregates announced from the AfriNIC address blocks:  12020
AfriNIC Region origin ASes present in the Internet Routing Table:  1714
    AfriNIC Prefixes per ASN:                                     21.20
AfriNIC Region origin ASes announcing only one prefix:              600
AfriNIC Region transit ASes present in the Internet Routing Table:  330
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       37
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1053
Number of AfriNIC addresses announced to Internet:            108124672
    Equivalent to 6 /8s, 113 /16s and 218 /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        9170       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5943        787     703  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4860       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3625       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3504       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3371       1874      95  VNPT-AS-VN VNPT Corp, VN
  9498        2679        499     238  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2529      11251     594  KIXS-AS-KR Korea Telecom, KR
 24560        2349        849     437  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2180       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

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        7764      10639    2927  AMAZON-02, US
 11492        4539        301     581  CABLEONE, US
  7155        3894        265      33  VIASAT-SP-BACKBONE, US
 22773        3697       3064     324  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3520       1320      63  SHAW, CA
 16625        3465       1799    2514  AKAMAI-AS, US
   749        3026      50577    2293  DNIC-AS-00749, US
  7018        2606      24130    1578  ATT-INTERNET4, US
396982        2574       3493     369  GOOGLE-CLOUD-PLATFORM, US
 30036        2563        368     393  MEDIACOM-ENTERPRISE-BUSINESS, 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        6960       1706     146  UNI2-AS, ES
  9121        6126       1692      17  TTNET, TR
 39891        4560        269      57  ALJAWWALSTC-AS, SA
 20940        4047       3400     183  AKAMAI-ASN1, NL
  8551        3700        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2939       2290     907  ROSTELECOM-AS, RU
 47331        2820        413    2125  TTNET, TR
  9009        2645        252    1360  M247, RO
 34984        2255        358     611  TELLCOM-AS, TR
  6849        2195        339      20  UKRTELNET, UA

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       10924       3340     593  Uninet S.A. de C.V., MX
 10620        3466        507     852  Telmex Colombia S.A., CO
 11830        2261        369      64  Instituto Costarricense de Electricidad
 13999        2191        358     584  Mega Cable, S.A. de C.V., MX
 28573        1345       2328     258  Claro NXT Telecomunicacoes Ltda, BR
  6503        1295        339     517  Axtel, S.A.B. de C.V., MX
  3816        1291        740     156  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1153        370      22  Telefonica del Peru S.A.A., PE
 11664        1138        186     467  Techtel LMDS Comunicaciones Interactiva
 26615         991       2466      43  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
 24863        1518        393      21  LINKdotNET-AS, EG
 24835        1509        511      29  RAYA-AS, EG
 36992        1321       1518     274  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1013         67      40  ORANGE-COTE-IVOIRE, CI
 36935         705        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         517         53      43  WANANCHI-, KE
 37342         494         32       1  MOVITEL, MZ
  2018         372        319      71  TENET-1, ZA

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       10924       3340     593  Uninet S.A. de C.V., MX
  9808        9170       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7764      10639    2927  AMAZON-02, US
 12479        6960       1706     146  UNI2-AS, ES
  9121        6126       1692      17  TTNET, TR
  7545        5943        787     703  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4860       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4560        269      57  ALJAWWALSTC-AS, SA
 11492        4539        301     581  CABLEONE, US
 20940        4047       3400     183  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        9170         9120  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6960         6814  UNI2-AS, ES
  9121        6126         6109  TTNET, TR
  7545        5943         5240  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        7764         4837  AMAZON-02, US
  4538        4860         4785  ERX-CERNET-BKB China Education and Research Net
 39891        4560         4503  ALJAWWALSTC-AS, SA
 11492        4539         3958  CABLEONE, US
 20940        4047         3864  AKAMAI-ASN1, NL
  7155        3894         3861  VIASAT-SP-BACKBONE, US

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
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     16641  UNALLOCATED  8.10.194.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.10.210.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.12.76.0/24              3356  LEVEL3, US
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.14.115.0/24             3356  LEVEL3, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     25674  UNALLOCATED  8.19.146.0/24             3356  LEVEL3, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, 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
23.131.185.0/24      Origin:       174  COGENT-174, US
23.131.185.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.186.0/24      Origin:       174  COGENT-174, US
23.131.186.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.187.0/24      Origin:       174  COGENT-174, US
23.131.187.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.190.0/24      Origin:      7018  ATT-INTERNET4, US
23.131.190.0/24     Transit:      1299  TWELVE99 Arelion, fka Telia Carrier, SE
23.131.191.0/24      Origin:    212238  CDNEXT, GB
23.131.191.0/24     Transit:     60068  CDN77 \^_^, GB

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      /10:39      /11:101     /12:296     
/13:587     /14:1204    /15:2045    /16:13502   /17:8318    /18:13923   
/19:25190   /20:44236   /21:52307   /22:110039  /23:98038   /24:546637  
/25:810     /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        6006        6960  UNI2-AS, ES
  9121        5301        6126  TTNET, TR
  8151        4910       10924  Uninet S.A. de C.V., MX
 39891        3551        4560  ALJAWWALSTC-AS, SA
 11492        3447        4539  CABLEONE, US
  6327        3328        3520  SHAW, CA
  8551        3165        3700  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        2983        3894  VIASAT-SP-BACKBONE, US
 22773        2726        3697  ASN-CXA-ALL-CCI-22773-RDC, US
 47331        2441        2820  TTNET, TR

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

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

   1:1635      2:1225      3:168       4:5         5:4106      6:110    
   7:5         8:1574      9:1        11:172      12:1609     13:370    
  14:2368     15:285      16:76       17:371      18:410      20:243    
  21:4        22:188      23:6009     24:2458     25:4        27:2708   
  29:19       31:2497     32:103      34:8        35:95       36:1817   
  37:4591     38:3975     39:820      40:144      41:3911     42:1055   
  43:2316     44:305      45:16450    46:4239     47:381      49:1723   
  50:1935     51:374      52:1543     54:396      55:773      56:8      
  57:80       58:1747     59:1160     60:1006     61:2436     62:2600   
  63:1938     64:5649     65:2331     66:4910     67:3035     68:1362   
  69:4141     70:1256     71:657      72:2993     74:2598     75:1464   
  76:594      77:2345     78:3957     79:2943     80:2060     81:1830   
  82:1488     83:1236     84:1510     85:3754     86:744      87:1926   
  88:2870     89:3506     90:591      91:7624     92:1982     93:2567   
  94:3494     95:4842     96:1316     97:344      98:1173     99:740    
 100:75      101:1058    102:2502    103:30699   104:4611    105:482    
 106:850     107:2547    108:918     109:4344    110:2050    111:3311   
 112:2034    113:1559    114:1605    115:2038    116:1900    117:2473   
 118:2282    119:1915    120:1727    121:1105    122:2592    123:2150   
 124:1577    125:2324    128:1290    129:1061    130:971     131:2009   
 132:799     133:403     134:1896    135:292     136:887     137:918    
 138:2583    139:1500    140:1029    141:1491    142:1420    143:1441   
 144:1188    145:352     146:1894    147:1517    148:2285    149:1858   
 150:864     151:1147    152:1845    153:476     154:3826    155:1412   
 156:1629    157:1290    158:1045    159:2233    160:2577    161:1432   
 162:3548    163:1482    164:1684    165:1636    166:825     167:1732   
 168:3876    169:924     170:4567    171:887     172:3513    173:3059   
 174:1026    175:1146    176:3632    177:4798    178:3532    179:2161   
 180:2371    181:3362    182:3267    183:1934    184:2366    185:19982  
 186:4623    187:3927    188:4093    189:3457    190:9046    191:1469   
 192:10983   193:8820    194:7188    195:5091    196:2969    197:2414   
 198:5999    199:6097    200:7727    201:5884    202:10651   203:10025  
 204:4611    205:3523    206:3826    207:3405    208:4114    209:4820   
 210:4425    211:2496    212:4086    213:3541    214:1101    215:55     
 216:6575    217:2642    218:1271    219:576     220:2030    221:954    
 222:843     223:2001   

End of report


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