[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Nov 17 18:02:11 UTC 2023


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 18 Nov, 2023

  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:                              935368
    Prefixes after maximum aggregation (per Origin AS):          355908
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      454806
Total ASes present in the Internet Routing Table:                 75063
    Prefixes per ASN:                                             12.46
Origin-only ASes present in the Internet Routing Table:           64423
Origin ASes announcing only one prefix:                           26500
Transit ASes present in the Internet Routing Table:               10640
Transit-only ASes present in the Internet Routing Table:            481
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:              1058
    Number of instances of unregistered ASNs:                      1060
Number of 32-bit ASNs allocated by the RIRs:                      43068
Number of 32-bit ASNs visible in the Routing Table:               35403
Prefixes from 32-bit ASNs in the Routing Table:                  177707
Number of bogon 32-bit ASNs visible in the Routing Table:            30
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            533
Number of addresses announced to Internet:                   3050179328
    Equivalent to 181 /8s, 206 /16s and 11 /24s
    Percentage of available address space announced:               82.4
    Percentage of allocated address space announced:               82.4
    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:      310771

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

Prefixes being announced by APNIC Region ASes:                   248769
    Total APNIC prefixes after maximum aggregation:               71647
    APNIC Deaggregation factor:                                    3.47
Prefixes being announced from the APNIC address blocks:          241951
    Unique aggregates announced from the APNIC address blocks:    99167
APNIC Region origin ASes present in the Internet Routing Table:   13773
    APNIC Prefixes per ASN:                                       17.57
APNIC Region origin ASes announcing only one prefix:               4141
APNIC Region transit ASes present in the Internet Routing Table:   1854
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:   9105
Number of APNIC addresses announced to Internet:              771745152
    Equivalent to 45 /8s, 255 /16s and 229 /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:                    273597
    Total ARIN prefixes after maximum aggregation:               124288
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           278287
    Unique aggregates announced from the ARIN address blocks:    132362
ARIN Region origin ASes present in the Internet Routing Table:    19079
    ARIN Prefixes per ASN:                                        14.59
ARIN Region origin ASes announcing only one prefix:                6971
ARIN Region transit ASes present in the Internet Routing Table:    1964
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:    4827
Number of ARIN addresses announced to Internet:              1277108480
    Equivalent to 76 /8s, 31 /16s and 33 /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:                    262331
    Total RIPE prefixes after maximum aggregation:               124580
    RIPE Deaggregation factor:                                     2.11
Prefixes being announced from the RIPE address blocks:           256858
    Unique aggregates announced from the RIPE address blocks:    160709
RIPE Region origin ASes present in the Internet Routing Table:    28479
    RIPE Prefixes per ASN:                                         9.02
RIPE Region origin ASes announcing only one prefix:               12089
RIPE Region transit ASes present in the Internet Routing Table:    3924
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          37
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11440
Number of RIPE addresses announced to Internet:               714984576
    Equivalent to 42 /8s, 157 /16s and 204 /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:                  119556
    Total LACNIC prefixes after maximum aggregation:              28659
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:         118379
    Unique aggregates announced from the LACNIC address blocks:   49353
LACNIC Region origin ASes present in the Internet Routing Table:  11041
    LACNIC Prefixes per ASN:                                      10.72
LACNIC Region origin ASes announcing only one prefix:              2670
LACNIC Region transit ASes present in the Internet Routing Table:  2334
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:  8882
Number of LACNIC addresses announced to Internet:             178410240
    Equivalent to 10 /8s, 162 /16s and 83 /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:                  30057
    Total AfriNIC prefixes after maximum aggregation:              6022
    AfriNIC Deaggregation factor:                                  4.99
Prefixes being announced from the AfriNIC address blocks:         39360
    Unique aggregates announced from the AfriNIC address blocks:  12774
AfriNIC Region origin ASes present in the Internet Routing Table:  1807
    AfriNIC Prefixes per ASN:                                     21.78
AfriNIC Region origin ASes announcing only one prefix:              629
AfriNIC Region transit ASes present in the Internet Routing Table:  346
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: 1149
Number of AfriNIC addresses announced to Internet:            107500288
    Equivalent to 6 /8s, 104 /16s and 83 /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        9736       8730      44  CHINAMOBILE-CN China Mobile Communicati
  7545        5701        786     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4921       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4280        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3600       1047      70  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3262        493     245  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3262       1872      99  VNPT-AS-VN VNPT Corp, VN
  7552        2982       1330      20  VIETEL-AS-AP Viettel Group, VN
 24560        2585        852     376  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2532      11270     600  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        9216      11055    3348  AMAZON-02, US
 11492        4556        302     675  CABLEONE, US
  7155        4176        288      99  VIASAT-SP-BACKBONE, US
  6327        3555       1320      67  SHAW, CA
 22773        3512       3055     301  ASN-CXA-ALL-CCI-22773-RDC, US
   749        3158      54932    2410  DNIC-AS-00749, US
 16625        3046       1381    2291  AKAMAI-AS, US
   367        3036       3867    1437  DNIC-ASBLK-00306-00371, US
396982        2723       3631     374  GOOGLE-CLOUD-PLATFORM, US
  7018        2512      23615    1589  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        7460       1713     145  UNI2-AS, ES
 39891        4570        271      54  ALJAWWALSTC-AS, SA
 20940        4009       3397     142  AKAMAI-ASN1, NL
  8551        3438        368      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
  9009        3421        297    1590  M247, RO
 12389        2958       2295     911  ROSTELECOM-AS, RU
 34984        2323        361     590  TELLCOM-AS, TR
 58224        1651        910     584  TCI, IR
 13188        1607        100      26  TRIOLAN, UA
  8452        1523       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       12048       3374     598  UNINET, MX
 10620        3525        499     876  Telmex Colombia S.A., CO
 13999        2457        335     642  Mega Cable, S.A. de C.V., MX
 11830        2003        369      64  Instituto Costarricense de Electricidad
 28573        1332       2321     242  Claro NXT Telecomunicacoes Ltda, BR
  3816        1299        778     190  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1250        342     505  Axtel, S.A.B. de C.V., MX
  6147        1102        369      22  Telefonica del Peru S.A.A., PE
 11664        1075        173     437  Techtel LMDS Comunicaciones Interactiva
 26615        1039       2502      52  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        1606        393      19  LINKdotNET-AS, EG
 24835        1548        545      28  RAYA-AS, EG
 36992        1358       1518     280  ETISALAT-MISR, EG
 36903        1248        553      98  MT-MPLS, MA
 29571        1045         67      53  ORANGE-COTE-IVOIRE, CI
 36935         935        521      43  Vodafone-, EG
  6713         551       1861      34  IAM-AS, MA
 15399         522         54      47  WANANCHI-, KE
 24757         480         73       5  EthioNet-AS, ET
 37342         476         32       1  MOVITEL, MZ

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       12048       3374     598  UNINET, MX
  9808        9736       8730      44  CHINAMOBILE-CN China Mobile Communicati
 16509        9216      11055    3348  AMAZON-02, US
 12479        7460       1713     145  UNI2-AS, ES
  7545        5701        786     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4921       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4570        271      54  ALJAWWALSTC-AS, SA
 11492        4556        302     675  CABLEONE, US
 18403        4280        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4176        288      99  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        9736         9692  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7460         7315  UNI2-AS, ES
 16509        9216         5868  AMAZON-02, US
  7545        5701         5005  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4921         4846  ERX-CERNET-BKB China Education and Research Net
 39891        4570         4516  ALJAWWALSTC-AS, SA
 18403        4280         4255  FPT-AS-AP FPT Telecom Company, VN
  7155        4176         4077  VIASAT-SP-BACKBONE, US
 11492        4556         3881  CABLEONE, US
 20940        4009         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             11168  SCC, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     40493  UNALLOCATED  8.17.26.0/24              3356  LEVEL3, 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
    396894  UNALLOCATED  8.28.201.0/24            46887  LIGHTOWER, 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
23.189.192.0/24      Origin:     27593  RESERVED, ZZ
23.189.192.0/24     Transit:       174  COGENT-174, US
36.255.139.0/24      Origin:     56050  NEW-SHINE-INTERNET-TH 134 Yenchit Road, 
36.255.139.0/24     Transit:     58913  HCL-TH 4819 Supapong 3 Alley, Srinakarin

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      /10:38      /11:99      /12:299     
/13:582     /14:1195    /15:2062    /16:13470   /17:8334    /18:13834   
/19:25158   /20:44399   /21:51591   /22:110694  /23:99516   /24:563340  
/25:727     /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        6549        7460  UNI2-AS, ES
  8151        6068       12048  UNINET, MX
 11492        3469        4556  CABLEONE, US
  6327        3364        3555  SHAW, CA
 39891        3324        4570  ALJAWWALSTC-AS, SA
  7155        3122        4176  VIASAT-SP-BACKBONE, US
  8551        2915        3438  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2565        3512  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2136        2481  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2118        3525  Telmex Colombia S.A., CO

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

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

   1:2254      2:1427      3:272       4:5         5:4379      6:162    
   7:6         8:1543      9:1        11:172      12:1492     13:365    
  14:2322     15:304      16:206      17:364      18:669      20:318    
  21:4        22:188      23:6500     24:2566     25:2        27:2528   
  29:19       31:2569     32:58       34:31       35:118      36:2021   
  37:4446     38:5621     39:877      40:149      41:3985     42:2072   
  43:2320     44:330      45:16801    46:4364     47:373      49:1879   
  50:1887     51:573      52:1591     54:393      55:863      56:5      
  57:128      58:1902     59:1172     60:1010     61:2566     62:2706   
  63:1903     64:5500     65:2345     66:5014     67:3063     68:1348   
  69:4131     70:1190     71:606      72:2924     74:2637     75:1563   
  76:627      77:2347     78:1827     79:3016     80:2113     81:1849   
  82:1515     83:1301     84:1611     85:2990     86:777      87:1952   
  88:1231     89:3952     90:627      91:7892     92:2146     93:2647   
  94:3578     95:4000     96:1300     97:315      98:1083     99:736    
 100:96      101:1149    102:2946    103:32369   104:4773    105:576    
 106:986     107:2781    108:1134    109:4209    110:2133    111:3180   
 112:2079    113:1737    114:1717    115:1997    116:1932    117:2481   
 118:2723    119:1949    120:1805    121:1255    122:2626    123:2229   
 124:1625    125:2666    128:1486    129:917     130:1058    131:1985   
 132:825     133:408     134:1706    135:298     136:920     137:987    
 138:2706    139:1578    140:1330    141:1327    142:1541    143:1525   
 144:1007    145:343     146:1968    147:1635    148:2462    149:2343   
 150:1014    151:1252    152:1842    153:524     154:5337    155:1388   
 156:2103    157:1352    158:1058    159:2208    160:2610    161:1605   
 162:3558    163:1622    164:1659    165:1856    166:1083    167:1752   
 168:3862    169:790     170:4660    171:966     172:3801    173:2992   
 174:957     175:1192    176:3626    177:4544    178:3523    179:2178   
 180:2265    181:3589    182:3417    183:2005    184:2274    185:20644  
 186:4755    187:4242    188:4050    189:3976    190:9352    191:1474   
 192:11024   193:8983    194:7302    195:5213    196:3126    197:2467   
 198:6022    199:6527    200:8088    201:6252    202:10618   203:10042  
 204:4561    205:3697    206:4420    207:3517    208:4122    209:4929   
 210:4519    211:2559    212:4258    213:3405    214:1110    215:71     
 216:6719    217:2769    218:1324    219:586     220:2029    221:1004   
 222:866     223:2212   

End of report


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