[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jan 12 18:02:20 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 13 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:                              938625
    Prefixes after maximum aggregation (per Origin AS):          356925
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      455683
Total ASes present in the Internet Routing Table:                 75263
    Prefixes per ASN:                                             12.47
Origin-only ASes present in the Internet Routing Table:           64540
Origin ASes announcing only one prefix:                           26595
Transit ASes present in the Internet Routing Table:               10723
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:              1118
    Number of instances of unregistered ASNs:                      1120
Number of 32-bit ASNs allocated by the RIRs:                      43370
Number of 32-bit ASNs visible in the Routing Table:               35692
Prefixes from 32-bit ASNs in the Routing Table:                  180042
Number of bogon 32-bit ASNs visible in the Routing Table:            17
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            495
Number of addresses announced to Internet:                   3047253248
    Equivalent to 181 /8s, 161 /16s and 101 /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:      310100

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

Prefixes being announced by APNIC Region ASes:                   251179
    Total APNIC prefixes after maximum aggregation:               72591
    APNIC Deaggregation factor:                                    3.46
Prefixes being announced from the APNIC address blocks:          244097
    Unique aggregates announced from the APNIC address blocks:    99806
APNIC Region origin ASes present in the Internet Routing Table:   13911
    APNIC Prefixes per ASN:                                       17.55
APNIC Region origin ASes announcing only one prefix:               4202
APNIC Region transit ASes present in the Internet Routing Table:   1873
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         34
Number of APNIC region 32-bit ASNs visible in the Routing Table:   9269
Number of APNIC addresses announced to Internet:              774771584
    Equivalent to 46 /8s, 46 /16s and 19 /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:                    273292
    Total ARIN prefixes after maximum aggregation:               123615
    ARIN Deaggregation factor:                                     2.21
Prefixes being announced from the ARIN address blocks:           278201
    Unique aggregates announced from the ARIN address blocks:    132052
ARIN Region origin ASes present in the Internet Routing Table:    19063
    ARIN Prefixes per ASN:                                        14.59
ARIN Region origin ASes announcing only one prefix:                6947
ARIN Region transit ASes present in the Internet Routing Table:    1954
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:    4831
Number of ARIN addresses announced to Internet:              1272481792
    Equivalent to 75 /8s, 216 /16s and 136 /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:                    262298
    Total RIPE prefixes after maximum aggregation:               125085
    RIPE Deaggregation factor:                                     2.10
Prefixes being announced from the RIPE address blocks:           256857
    Unique aggregates announced from the RIPE address blocks:    161066
RIPE Region origin ASes present in the Internet Routing Table:    28507
    RIPE Prefixes per ASN:                                         9.01
RIPE Region origin ASes announcing only one prefix:               12136
RIPE Region transit ASes present in the Internet Routing Table:    3947
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          37
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11516
Number of RIPE addresses announced to Internet:               714365056
    Equivalent to 42 /8s, 148 /16s and 88 /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:                  120197
    Total LACNIC prefixes after maximum aggregation:              28861
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         118897
    Unique aggregates announced from the LACNIC address blocks:   49488
LACNIC Region origin ASes present in the Internet Routing Table:  11066
    LACNIC Prefixes per ASN:                                      10.74
LACNIC Region origin ASes announcing only one prefix:              2664
LACNIC Region transit ASes present in the Internet Routing Table:  2384
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:  8920
Number of LACNIC addresses announced to Internet:             177540096
    Equivalent to 10 /8s, 149 /16s and 12 /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:                  30541
    Total AfriNIC prefixes after maximum aggregation:              6047
    AfriNIC Deaggregation factor:                                  5.05
Prefixes being announced from the AfriNIC address blocks:         40078
    Unique aggregates announced from the AfriNIC address blocks:  12859
AfriNIC Region origin ASes present in the Internet Routing Table:  1815
    AfriNIC Prefixes per ASN:                                     22.08
AfriNIC Region origin ASes announcing only one prefix:              646
AfriNIC Region transit ASes present in the Internet Routing Table:  351
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       36
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1156
Number of AfriNIC addresses announced to Internet:            107807744
    Equivalent to 6 /8s, 109 /16s and 4 /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        9796       8739      53  CHINAMOBILE-CN China Mobile Communicati
  7545        5676        784     687  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4926       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4542        347      25  FPT-AS-AP FPT Telecom Company, VN
  7552        3848       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3592       1043      64  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3429        498     255  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3274       1872      99  VNPT-AS-VN VNPT Corp, VN
 24560        2674        859     372  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2303      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        9474      11202    3360  AMAZON-02, US
 11492        4569        303     660  CABLEONE, US
  7155        4177        288      96  VIASAT-SP-BACKBONE, US
  6327        3570       1320      70  SHAW, CA
 22773        3513       3058     301  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3262       1424    2337  AKAMAI-AS, US
   749        3161      54929    2413  DNIC-AS-00749, US
   367        2955       3828    1423  DNIC-ASBLK-00306-00371, US
396982        2746       3639     390  GOOGLE-CLOUD-PLATFORM, US
  7018        2508      23622    1571  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        7547       1714     146  UNI2-AS, ES
 39891        4658        280      55  ALJAWWALSTC-AS, SA
 20940        4004       3397     142  AKAMAI-ASN1, NL
  9009        3468        298    1632  M247, RO
 12389        2977       2301     912  ROSTELECOM-AS, RU
  8551        2968        368      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 34984        2325        359     599  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
 58224        1515        873     581  TCI, IR
  8452        1475       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       12220       3379     609  UNINET, MX
 10620        3523        497     888  Telmex Colombia S.A., CO
 13999        2498        340     638  Mega Cable, S.A. de C.V., MX
 11830        2006        369      64  Instituto Costarricense de Electricidad
 28573        1346       2319     238  Claro NXT Telecomunicacoes Ltda, BR
  3816        1306        787     197  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1238        340     499  Axtel, S.A.B. de C.V., MX
 11664        1117        179     421  Techtel LMDS Comunicaciones Interactiva
  6147        1088        369      22  Telefonica del Peru S.A.A., PE
 22884        1074        116     375  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
 24835        1548        545      28  RAYA-AS, EG
 24863        1539        389      16  LINKdotNET-AS, EG
 36992        1361       1518     280  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1081         69      55  ORANGE-COTE-IVOIRE, CI
 36935         934        521      43  Vodafone-, EG
  6713         552       1861      34  IAM-AS, MA
 15399         537         56      54  WANANCHI-, KE
 36914         532         82       3  KENET-AS, KE
 24757         480         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       12220       3379     609  UNINET, MX
  9808        9796       8739      53  CHINAMOBILE-CN China Mobile Communicati
 16509        9474      11202    3360  AMAZON-02, US
 12479        7547       1714     146  UNI2-AS, ES
  7545        5676        784     687  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4926       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4658        280      55  ALJAWWALSTC-AS, SA
 11492        4569        303     660  CABLEONE, US
 18403        4542        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        9796         9743  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7547         7401  UNI2-AS, ES
 16509        9474         6114  AMAZON-02, US
  7545        5676         4989  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4926         4851  ERX-CERNET-BKB China Education and Research Net
 39891        4658         4603  ALJAWWALSTC-AS, SA
 18403        4542         4517  FPT-AS-AP FPT Telecom Company, VN
  7155        4177         4081  VIASAT-SP-BACKBONE, US
 11492        4569         3909  CABLEONE, US
 20940        4004         3862  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    /15:2068    /16:13442   /17:8248    /18:13785   
/19:25038   /20:44400   /21:51942   /22:110894  /23:98993   /24:566860  
/25:715     /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        6632        7547  UNI2-AS, ES
  8151        6223       12220  UNINET, MX
 11492        3482        4569  CABLEONE, US
  6327        3374        3570  SHAW, CA
 39891        3340        4658  ALJAWWALSTC-AS, SA
  7155        3121        4177  VIASAT-SP-BACKBONE, US
 22773        2554        3513  ASN-CXA-ALL-CCI-22773-RDC, US
  8551        2445        2968  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2128        2472  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2126        3523  Telmex Colombia S.A., CO

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

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

   1:2306      2:1472      3:282       4:5         5:4427      6:163    
   7:6         8:1533      9:1        11:172      12:1486     13:375    
  14:2375     15:310      16:204      17:363      18:715      20:346    
  21:4        22:188      23:6608     24:2686     25:2        27:2506   
  29:19       31:2543     32:56       34:35       35:122      36:2141   
  37:4490     38:5899     39:888      40:147      41:4149     42:2213   
  43:2330     44:326      45:16744    46:4322     47:285      49:1910   
  50:1883     51:574      52:1591     54:366      55:859      56:5      
  57:130      58:1942     59:1174     60:1012     61:2582     62:2737   
  63:1907     64:5508     65:2335     66:4973     67:3045     68:1337   
  69:4082     70:1179     71:579      72:2918     74:2652     75:1555   
  76:625      77:2343     78:1826     79:2729     80:2129     81:1885   
  82:1529     83:1315     84:1638     85:3071     86:775      87:1952   
  88:1228     89:3953     90:661      91:7907     92:2186     93:2634   
  94:3604     95:4017     96:1289     97:315      98:1015     99:745    
 100:95      101:1158    102:3043    103:32561   104:4781    105:601    
 106:919     107:2748    108:1121    109:4068    110:2141    111:3210   
 112:2086    113:1784    114:1750    115:1991    116:1977    117:2629   
 118:2774    119:1944    120:1803    121:1321    122:2642    123:2218   
 124:1597    125:2815    126:28      128:1461    129:914     130:1065   
 131:1929    132:824     133:410     134:1708    135:305     136:916    
 137:997     138:2758    139:1580    140:1359    141:1349    142:1545   
 143:1528    144:1007    145:342     146:1991    147:1654    148:2508   
 149:2432    150:1019    151:1313    152:1963    153:529     154:5540   
 155:1368    156:2101    157:1388    158:1080    159:2215    160:2615   
 161:1623    162:3616    163:1676    164:1626    165:2099    166:1075   
 167:1703    168:3842    169:796     170:4685    171:1000    172:3785   
 173:2997    174:898     175:1215    176:3616    177:4620    178:3530   
 179:2224    180:2352    181:3657    182:3459    183:2016    184:2269   
 185:20522   186:4796    187:4317    188:4012    189:3983    190:9335   
 191:1475    192:11030   193:8968    194:7373    195:5227    196:3167   
 197:2606    198:6004    199:6962    200:8061    201:6259    202:10488  
 203:10088   204:4593    205:3682    206:4437    207:3490    208:4093   
 209:4948    210:4612    211:2595    212:4223    213:3395    214:1111   
 215:44      216:6775    217:2771    218:1344    219:588     220:2044   
 221:1021    222:868     223:2206   

End of report


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