[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jan 26 18:02:26 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 27 Jan, 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:                              940117
    Prefixes after maximum aggregation (per Origin AS):          357735
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      456211
Total ASes present in the Internet Routing Table:                 75349
    Prefixes per ASN:                                             12.48
Origin-only ASes present in the Internet Routing Table:           64603
Origin ASes announcing only one prefix:                           26556
Transit ASes present in the Internet Routing Table:               10746
Transit-only ASes present in the Internet Routing Table:            499
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                     121
    Max AS path prepend of ASN (150315)                             116
Prefixes from unregistered ASNs in the Routing Table:              1123
    Number of instances of unregistered ASNs:                      1125
Number of 32-bit ASNs allocated by the RIRs:                      43482
Number of 32-bit ASNs visible in the Routing Table:               35776
Prefixes from 32-bit ASNs in the Routing Table:                  180692
Number of bogon 32-bit ASNs visible in the Routing Table:            34
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            499
Number of addresses announced to Internet:                   3047946240
    Equivalent to 181 /8s, 171 /16s and 248 /24s
    Percentage of available address space announced:               82.3
    Percentage of allocated address space announced:               82.3
    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:      310463

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

Prefixes being announced by APNIC Region ASes:                   251719
    Total APNIC prefixes after maximum aggregation:               72784
    APNIC Deaggregation factor:                                    3.46
Prefixes being announced from the APNIC address blocks:          244588
    Unique aggregates announced from the APNIC address blocks:    99925
APNIC Region origin ASes present in the Internet Routing Table:   13942
    APNIC Prefixes per ASN:                                       17.54
APNIC Region origin ASes announcing only one prefix:               4210
APNIC Region transit ASes present in the Internet Routing Table:   1886
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                        121
Number of APNIC region 32-bit ASNs visible in the Routing Table:   9307
Number of APNIC addresses announced to Internet:              774890112
    Equivalent to 46 /8s, 47 /16s and 226 /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:                    274037
    Total ARIN prefixes after maximum aggregation:               123967
    ARIN Deaggregation factor:                                     2.21
Prefixes being announced from the ARIN address blocks:           278953
    Unique aggregates announced from the ARIN address blocks:    132163
ARIN Region origin ASes present in the Internet Routing Table:    19089
    ARIN Prefixes per ASN:                                        14.61
ARIN Region origin ASes announcing only one prefix:                6959
ARIN Region transit ASes present in the Internet Routing Table:    1960
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          26
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4838
Number of ARIN addresses announced to Internet:              1272521472
    Equivalent to 75 /8s, 217 /16s and 35 /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:                    262397
    Total RIPE prefixes after maximum aggregation:               125321
    RIPE Deaggregation factor:                                     2.09
Prefixes being announced from the RIPE address blocks:           256924
    Unique aggregates announced from the RIPE address blocks:    161207
RIPE Region origin ASes present in the Internet Routing Table:    28539
    RIPE Prefixes per ASN:                                         9.00
RIPE Region origin ASes announcing only one prefix:               12105
RIPE Region transit ASes present in the Internet Routing Table:    3958
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          28
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11560
Number of RIPE addresses announced to Internet:               714349184
    Equivalent to 42 /8s, 148 /16s and 26 /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:                  120287
    Total LACNIC prefixes after maximum aggregation:              28861
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:         118962
    Unique aggregates announced from the LACNIC address blocks:   49567
LACNIC Region origin ASes present in the Internet Routing Table:  11052
    LACNIC Prefixes per ASN:                                      10.76
LACNIC Region origin ASes announcing only one prefix:              2635
LACNIC Region transit ASes present in the Internet Routing Table:  2389
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:  8905
Number of LACNIC addresses announced to Internet:             178093056
    Equivalent to 10 /8s, 157 /16s and 124 /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:                  30554
    Total AfriNIC prefixes after maximum aggregation:              6079
    AfriNIC Deaggregation factor:                                  5.03
Prefixes being announced from the AfriNIC address blocks:         40191
    Unique aggregates announced from the AfriNIC address blocks:  12940
AfriNIC Region origin ASes present in the Internet Routing Table:  1821
    AfriNIC Prefixes per ASN:                                     22.07
AfriNIC Region origin ASes announcing only one prefix:              647
AfriNIC Region transit ASes present in the Internet Routing Table:  350
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       27
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1166
Number of AfriNIC addresses announced to Internet:            107805696
    Equivalent to 6 /8s, 108 /16s and 252 /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        9809       8740      56  CHINAMOBILE-CN China Mobile Communicati
  7545        5678        784     686  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4928       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4553        347      25  FPT-AS-AP FPT Telecom Company, VN
  7552        3877       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3592       1043      64  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3453        499     254  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3280       1872      99  VNPT-AS-VN VNPT Corp, VN
 24560        2692        860     360  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2300      11258     574  KIXS-AS-KR Korea Telecom, KR

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        9485      11229    3396  AMAZON-02, US
 11492        4576        303     661  CABLEONE, US
  7155        4177        288      96  VIASAT-SP-BACKBONE, US
 22773        3622       3060     299  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3568       1319      69  SHAW, CA
 16625        3230       1417    2312  AKAMAI-AS, US
   749        3161      54929    2413  DNIC-AS-00749, US
   367        2925       3732    1420  DNIC-ASBLK-00306-00371, US
396982        2747       3639     389  GOOGLE-CLOUD-PLATFORM, US
  7018        2520      23621    1586  ATT-INTERNET4, 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        7546       1698     148  UNI2-AS, ES
 39891        4658        280      55  ALJAWWALSTC-AS, SA
 20940        4001       3396     134  AKAMAI-ASN1, NL
  9009        3274        285    1589  M247, RO
 12389        2979       2301     912  ROSTELECOM-AS, RU
  8551        2809        368      35  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 34984        2325        359     601  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
 58224        1510        867     579  TCI, IR
  8452        1469       1852      14  TE-AS TE-AS, EG

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       12343       3381     617  UNINET, MX
 10620        3520        496     897  Telmex Colombia S.A., CO
 13999        2499        337     640  Mega Cable, S.A. de C.V., MX
 11830        2006        369      64  Instituto Costarricense de Electricidad
 28573        1341       2319     238  Claro NXT Telecomunicacoes Ltda, BR
  3816        1306        787     192  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1237        340     498  Axtel, S.A.B. de C.V., MX
 11664        1119        177     422  Techtel LMDS Comunicaciones Interactiva
  6147        1089        369      22  Telefonica del Peru S.A.A., PE
 22884        1073        116     378  TOTAL PLAY TELECOMUNICACIONES SA DE CV,

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        1564        389      16  LINKdotNET-AS, EG
 24835        1548        545      28  RAYA-AS, EG
 36992        1365       1518     282  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1099         71      53  ORANGE-COTE-IVOIRE, CI
 36935         935        521      42  Vodafone-, EG
  6713         551       1861      34  IAM-AS, MA
 15399         540         56      54  WANANCHI-, KE
 36914         537         82       3  KENET-AS, KE
 24757         487         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       12343       3381     617  UNINET, MX
  9808        9809       8740      56  CHINAMOBILE-CN China Mobile Communicati
 16509        9485      11229    3396  AMAZON-02, US
 12479        7546       1698     148  UNI2-AS, ES
  7545        5678        784     686  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4928       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4658        280      55  ALJAWWALSTC-AS, SA
 11492        4576        303     661  CABLEONE, US
 18403        4553        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4177        288      96  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        9809         9753  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7546         7398  UNI2-AS, ES
 16509        9485         6089  AMAZON-02, US
  7545        5678         4992  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4928         4853  ERX-CERNET-BKB China Education and Research Net
 39891        4658         4603  ALJAWWALSTC-AS, SA
 18403        4553         4528  FPT-AS-AP FPT Telecom Company, VN
  7155        4177         4081  VIASAT-SP-BACKBONE, US
 11492        4576         3915  CABLEONE, US
 20940        4001         3867  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
     33492  UNALLOCATED  8.6.184.0/23             33650  COMCAST-33650, US
     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
     19589  UNALLOCATED  8.19.242.0/24            23314  ORLANDOTELCO, US
     19589  UNALLOCATED  8.19.248.0/24            23314  ORLANDOTELCO, 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  LIGHTOWER, 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
23.189.192.0/24      Origin:     27593  RESERVED, ZZ
23.189.192.0/24     Transit:       174  COGENT-174, US
41.57.124.0/22       Origin:     37442  RESERVED, ZZ
41.57.124.0/22      Transit:     37204  TELONE, ZW

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      /11:99      /12:300     
/13:579     /14:1195    /15:2069    /16:13454   /17:8255    /18:13818   
/19:25075   /20:44448   /21:51949   /22:110886  /23:99179   /24:568011  
/25:733     /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        6638        7546  UNI2-AS, ES
  8151        6328       12343  UNINET, MX
 11492        3490        4576  CABLEONE, US
  6327        3373        3568  SHAW, CA
 39891        3340        4658  ALJAWWALSTC-AS, SA
  7155        3121        4177  VIASAT-SP-BACKBONE, US
 22773        2657        3622  ASN-CXA-ALL-CCI-22773-RDC, US
  8551        2285        2809  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2129        2472  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2125        3520  Telmex Colombia S.A., CO

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

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

   1:2326      2:1546      3:287       4:5         5:4445      6:163    
   7:6         8:1534      9:1        11:172      12:1481     13:377    
  14:2376     15:310      16:203      17:363      18:715      20:350    
  21:4        22:188      23:6624     24:2709     25:2        27:2554   
  29:19       31:2549     32:56       34:35       35:123      36:2150   
  37:4487     38:6029     39:891      40:151      41:4074     42:2212   
  43:2328     44:326      45:16797    46:4292     47:285      49:1913   
  50:1905     51:572      52:1593     54:361      55:885      56:5      
  57:137      58:1996     59:1207     60:1016     61:2586     62:2761   
  63:1911     64:5531     65:2336     66:4932     67:3055     68:1339   
  69:4090     70:1197     71:579      72:2936     74:2650     75:1554   
  76:625      77:2348     78:1838     79:2603     80:2127     81:1897   
  82:1521     83:1252     84:1645     85:3096     86:770      87:1959   
  88:1219     89:3970     90:659      91:7932     92:2180     93:2645   
  94:3604     95:4032     96:1291     97:318      98:1037     99:744    
 100:96      101:1171    102:3049    103:32536   104:4809    105:600    
 106:920     107:2753    108:1120    109:4038    110:2150    111:3206   
 112:2070    113:1789    114:1758    115:1969    116:1977    117:2637   
 118:2767    119:1947    120:1811    121:1322    122:2644    123:2217   
 124:1604    125:2837    126:28      128:1521    129:906     130:1075   
 131:1812    132:824     133:409     134:1709    135:307     136:921    
 137:1005    138:2775    139:1583    140:1307    141:1345    142:1547   
 143:1522    144:1011    145:343     146:2002    147:1673    148:2516   
 149:2474    150:1019    151:1318    152:1975    153:528     154:5623   
 155:1376    156:2108    157:1432    158:1086    159:2210    160:2597   
 161:1628    162:3610    163:1662    164:1621    165:2095    166:1076   
 167:1696    168:3813    169:785     170:4683    171:1011    172:3793   
 173:3012    174:906     175:1215    176:3635    177:4573    178:3534   
 179:2236    180:2363    181:3656    182:3464    183:2020    184:2293   
 185:20557   186:4747    187:4336    188:4017    189:4015    190:9347   
 191:1466    192:11004   193:8996    194:7364    195:5222    196:3159   
 197:2662    198:6012    199:7074    200:8076    201:6336    202:10508  
 203:10117   204:4591    205:3728    206:4436    207:3514    208:4118   
 209:4937    210:4626    211:2601    212:4239    213:3408    214:1108   
 215:44      216:6810    217:2767    218:1338    219:588     220:2049   
 221:1022    222:871     223:2233   

End of report


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