[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Aug 25 18:02:09 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 26 Aug, 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:                              928003
    Prefixes after maximum aggregation (per Origin AS):          352092
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      452650
Total ASes present in the Internet Routing Table:                 74761
    Prefixes per ASN:                                             12.41
Origin-only ASes present in the Internet Routing Table:           64180
Origin ASes announcing only one prefix:                           26379
Transit ASes present in the Internet Routing Table:               10581
Transit-only ASes present in the Internet Routing Table:            457
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      70
    Max AS path prepend of ASN (263725)                              64
Prefixes from unregistered ASNs in the Routing Table:               995
    Number of instances of unregistered ASNs:                       997
Number of 32-bit ASNs allocated by the RIRs:                      42501
Number of 32-bit ASNs visible in the Routing Table:               35005
Prefixes from 32-bit ASNs in the Routing Table:                  174578
Number of bogon 32-bit ASNs visible in the Routing Table:            29
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            550
Number of addresses announced to Internet:                   3056713472
    Equivalent to 182 /8s, 49 /16s and 191 /24s
    Percentage of available address space announced:               82.6
    Percentage of allocated address space announced:               82.6
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:      309148

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

Prefixes being announced by APNIC Region ASes:                   246403
    Total APNIC prefixes after maximum aggregation:               70479
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          240069
    Unique aggregates announced from the APNIC address blocks:    98774
APNIC Region origin ASes present in the Internet Routing Table:   13598
    APNIC Prefixes per ASN:                                       17.65
APNIC Region origin ASes announcing only one prefix:               4033
APNIC Region transit ASes present in the Internet Routing Table:   1802
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         25
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8921
Number of APNIC addresses announced to Internet:              773327744
    Equivalent to 46 /8s, 24 /16s and 11 /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:                    271744
    Total ARIN prefixes after maximum aggregation:               123766
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           273939
    Unique aggregates announced from the ARIN address blocks:    131069
ARIN Region origin ASes present in the Internet Routing Table:    19105
    ARIN Prefixes per ASN:                                        14.34
ARIN Region origin ASes announcing only one prefix:                6978
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:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4824
Number of ARIN addresses announced to Internet:              1280067328
    Equivalent to 76 /8s, 76 /16s and 71 /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:                    260454
    Total RIPE prefixes after maximum aggregation:               122667
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           257184
    Unique aggregates announced from the RIPE address blocks:    159980
RIPE Region origin ASes present in the Internet Routing Table:    28402
    RIPE Prefixes per ASN:                                         9.06
RIPE Region origin ASes announcing only one prefix:               12046
RIPE Region transit ASes present in the Internet Routing Table:    3939
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11303
Number of RIPE addresses announced to Internet:               716498048
    Equivalent to 42 /8s, 180 /16s and 228 /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:                  118445
    Total LACNIC prefixes after maximum aggregation:              28558
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         117470
    Unique aggregates announced from the LACNIC address blocks:   49577
LACNIC Region origin ASes present in the Internet Routing Table:  11022
    LACNIC Prefixes per ASN:                                      10.66
LACNIC Region origin ASes announcing only one prefix:              2702
LACNIC Region transit ASes present in the Internet Routing Table:  2325
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        70
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8832
Number of LACNIC addresses announced to Internet:             178574592
    Equivalent to 10 /8s, 164 /16s and 213 /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:                  29962
    Total AfriNIC prefixes after maximum aggregation:              5925
    AfriNIC Deaggregation factor:                                  5.06
Prefixes being announced from the AfriNIC address blocks:         38791
    Unique aggregates announced from the AfriNIC address blocks:  12791
AfriNIC Region origin ASes present in the Internet Routing Table:  1785
    AfriNIC Prefixes per ASN:                                     21.73
AfriNIC Region origin ASes announcing only one prefix:              620
AfriNIC Region transit ASes present in the Internet Routing Table:  335
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       40
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1125
Number of AfriNIC addresses announced to Internet:            107782400
    Equivalent to 6 /8s, 108 /16s and 161 /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        9528       8729      40  CHINAMOBILE-CN China Mobile Communicati
  7545        5704        784     687  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4862       4193      76  ERX-CERNET-BKB China Education and Rese
 18403        4330        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3596       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3337       1840      97  VNPT-AS-VN VNPT Corp, VN
  9498        3106        498     251  BBIL-AP BHARTI Airtel Ltd., IN
  7552        2933       1331      21  VIETEL-AS-AP Viettel Group, VN
  4766        2559      11271     592  KIXS-AS-KR Korea Telecom, KR
 24560        2489        847     403  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd

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        8854      10952    3248  AMAZON-02, US
 11492        4524        300     643  CABLEONE, US
  7155        4179        288     101  VIASAT-SP-BACKBONE, US
 22773        3568       3056     314  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3527       1319      66  SHAW, CA
   749        3146      54960    2398  DNIC-AS-00749, US
 16625        3073       1486    2316  AKAMAI-AS, US
   367        2978       3812    1401  DNIC-ASBLK-00306-00371, US
396982        2687       3596     387  GOOGLE-CLOUD-PLATFORM, US
 30036        2501        358     372  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        7342       1713     145  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4083       3398     155  AKAMAI-ASN1, NL
  8551        3462        368      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2984       2296     916  ROSTELECOM-AS, RU
  9009        2652        246    1374  M247, RO
 34984        2329        362     595  TELLCOM-AS, TR
 58224        1750        922     526  TCI, IR
 13188        1606        100      27  TRIOLAN, UA
 61317        1524        102    1186  ASDETUK www.heficed.com, US

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       11660       3357     602  UNINET, MX
 10620        3535        506     849  Telmex Colombia S.A., CO
 13999        2450        366     644  Mega Cable, S.A. de C.V., MX
 11830        1997        369      64  Instituto Costarricense de Electricidad
 28573        1316       2324     233  Claro NXT Telecomunicacoes Ltda, BR
  6503        1301        344     509  Axtel, S.A.B. de C.V., MX
  3816        1289        757     188  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1117        181     436  Techtel LMDS Comunicaciones Interactiva
  6147        1113        370      22  Telefonica del Peru S.A.A., PE
 26615        1035       2501      49  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        1594        393      19  LINKdotNET-AS, EG
 24835        1503        533      27  RAYA-AS, EG
 36992        1338       1518     280  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1049         67      45  ORANGE-COTE-IVOIRE, CI
 36935         903        520      35  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         533         55      51  WANANCHI-, KE
 24757         478         73       5  EthioNet-AS, ET
 37342         467         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       11660       3357     602  UNINET, MX
  9808        9528       8729      40  CHINAMOBILE-CN China Mobile Communicati
 16509        8854      10952    3248  AMAZON-02, US
 12479        7342       1713     145  UNI2-AS, ES
  7545        5704        784     687  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897        290      61  ALJAWWALSTC-AS, SA
  4538        4862       4193      76  ERX-CERNET-BKB China Education and Rese
 11492        4524        300     643  CABLEONE, US
 18403        4330        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4179        288     101  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        9528         9488  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7342         7197  UNI2-AS, ES
 16509        8854         5606  AMAZON-02, US
  7545        5704         5017  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897         4836  ALJAWWALSTC-AS, SA
  4538        4862         4786  ERX-CERNET-BKB China Education and Research Net
 18403        4330         4305  FPT-AS-AP FPT Telecom Company, VN
  7155        4179         4078  VIASAT-SP-BACKBONE, US
 20940        4083         3928  AKAMAI-ASN1, NL
 11492        4524         3881  CABLEONE, 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
     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
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, 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
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
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      /10:39      /11:102     /12:298     
/13:579     /14:1196    /15:2068    /16:13516   /17:8275    /18:13870   
/19:25159   /20:44528   /21:51332   /22:110066  /23:99058   /24:557142  
/25:745     /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        6428        7342  UNI2-AS, ES
  8151        5702       11660  UNINET, MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3434        4524  CABLEONE, US
  6327        3337        3527  SHAW, CA
  7155        3124        4179  VIASAT-SP-BACKBONE, US
  8551        2930        3462  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2612        3568  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2158        2501  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2098        3535  Telmex Colombia S.A., CO

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

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

   1:2258      2:1382      3:228       4:5         5:4547      6:138    
   7:6         8:1550      9:1        11:172      12:1506     13:369    
  14:2302     15:301      16:196      17:372      18:613      20:280    
  21:4        22:188      23:6388     24:2492     25:6        27:2496   
  29:19       31:2534     32:81       34:25       35:118      36:1998   
  37:4613     38:5155     39:864      40:147      41:4048     42:2093   
  43:2324     44:322      45:16605    46:4290     47:384      49:1808   
  50:1869     51:595      52:1595     54:389      55:962      56:8      
  57:120      58:1864     59:1169     60:995      61:2483     62:2692   
  63:1922     64:5566     65:2334     66:4943     67:3024     68:1340   
  69:4138     70:1194     71:656      72:2957     74:2621     75:1563   
  76:622      77:2438     78:1834     79:2989     80:2122     81:1825   
  82:1458     83:1282     84:1528     85:2982     86:755      87:2000   
  88:1175     89:3862     90:617      91:7803     92:2068     93:2613   
  94:3533     95:4012     96:1294     97:317      98:1079     99:735    
 100:90      101:1077    102:2914    103:32021   104:4585    105:553    
 106:891     107:2585    108:1127    109:4263    110:2114    111:3186   
 112:2080    113:1813    114:1660    115:1987    116:1927    117:2452   
 118:2684    119:1985    120:1813    121:1147    122:2582    123:2184   
 124:1623    125:2526    128:1465    129:928     130:1033    131:1955   
 132:819     133:420     134:1791    135:306     136:911     137:974    
 138:2637    139:1583    140:1237    141:1293    142:1486    143:1493   
 144:982     145:345     146:1963    147:1610    148:2450    149:2141   
 150:870     151:1229    152:1860    153:518     154:4792    155:1386   
 156:1935    157:1321    158:1082    159:2230    160:2612    161:1586   
 162:3525    163:1596    164:1710    165:1830    166:980     167:1727   
 168:3849    169:913     170:4611    171:873     172:3675    173:2981   
 174:990     175:1198    176:3771    177:4491    178:3541    179:2128   
 180:2423    181:3453    182:3392    183:1998    184:2284    185:20521  
 186:4752    187:4094    188:4171    189:3780    190:9278    191:1331   
 192:10934   193:8953    194:7304    195:5201    196:3122    197:2459   
 198:6015    199:6079    200:7941    201:6036    202:10547   203:10025  
 204:4543    205:3662    206:4327    207:3482    208:4134    209:4928   
 210:4471    211:2536    212:4237    213:3587    214:1090    215:59     
 216:6665    217:2778    218:1286    219:576     220:2032    221:977    
 222:837     223:2171   

End of report


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