[cmNOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Sep 22 18:02:10 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 23 Sep, 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:                              929881
    Prefixes after maximum aggregation (per Origin AS):          353419
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      453344
Total ASes present in the Internet Routing Table:                 74825
    Prefixes per ASN:                                             12.43
Origin-only ASes present in the Internet Routing Table:           64232
Origin ASes announcing only one prefix:                           26380
Transit ASes present in the Internet Routing Table:               10593
Transit-only ASes present in the Internet Routing Table:            458
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:              1002
    Number of instances of unregistered ASNs:                      1004
Number of 32-bit ASNs allocated by the RIRs:                      42661
Number of 32-bit ASNs visible in the Routing Table:               35122
Prefixes from 32-bit ASNs in the Routing Table:                  175584
Number of bogon 32-bit ASNs visible in the Routing Table:            54
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            541
Number of addresses announced to Internet:                   3055111680
    Equivalent to 182 /8s, 25 /16s and 78 /24s
    Percentage of available address space announced:               82.5
    Percentage of allocated address space announced:               82.5
    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:      309250

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

Prefixes being announced by APNIC Region ASes:                   246637
    Total APNIC prefixes after maximum aggregation:               70924
    APNIC Deaggregation factor:                                    3.48
Prefixes being announced from the APNIC address blocks:          240295
    Unique aggregates announced from the APNIC address blocks:    98953
APNIC Region origin ASes present in the Internet Routing Table:   13644
    APNIC Prefixes per ASN:                                       17.61
APNIC Region origin ASes announcing only one prefix:               4058
APNIC Region transit ASes present in the Internet Routing Table:   1813
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8972
Number of APNIC addresses announced to Internet:              772870016
    Equivalent to 46 /8s, 17 /16s and 15 /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:                    272536
    Total ARIN prefixes after maximum aggregation:               123786
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           275896
    Unique aggregates announced from the ARIN address blocks:    131744
ARIN Region origin ASes present in the Internet Routing Table:    19093
    ARIN Prefixes per ASN:                                        14.45
ARIN Region origin ASes announcing only one prefix:                6946
ARIN Region transit ASes present in the Internet Routing Table:    1966
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:    4825
Number of ARIN addresses announced to Internet:              1278757632
    Equivalent to 76 /8s, 56 /16s and 75 /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:                    261391
    Total RIPE prefixes after maximum aggregation:               123556
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           256814
    Unique aggregates announced from the RIPE address blocks:    160087
RIPE Region origin ASes present in the Internet Routing Table:    28412
    RIPE Prefixes per ASN:                                         9.04
RIPE Region origin ASes announcing only one prefix:               12057
RIPE Region transit ASes present in the Internet Routing Table:    3940
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:   11344
Number of RIPE addresses announced to Internet:               716872832
    Equivalent to 42 /8s, 186 /16s and 156 /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:                  118492
    Total LACNIC prefixes after maximum aggregation:              28501
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         117425
    Unique aggregates announced from the LACNIC address blocks:   49264
LACNIC Region origin ASes present in the Internet Routing Table:  11035
    LACNIC Prefixes per ASN:                                      10.64
LACNIC Region origin ASes announcing only one prefix:              2700
LACNIC Region transit ASes present in the Internet Routing Table:  2331
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:  8853
Number of LACNIC addresses announced to Internet:             178424320
    Equivalent to 10 /8s, 162 /16s and 138 /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:                  29823
    Total AfriNIC prefixes after maximum aggregation:              5950
    AfriNIC Deaggregation factor:                                  5.01
Prefixes being announced from the AfriNIC address blocks:         38910
    Unique aggregates announced from the AfriNIC address blocks:  12846
AfriNIC Region origin ASes present in the Internet Routing Table:  1786
    AfriNIC Prefixes per ASN:                                     21.79
AfriNIC Region origin ASes announcing only one prefix:              619
AfriNIC Region transit ASes present in the Internet Routing Table:  333
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: 1128
Number of AfriNIC addresses announced to Internet:            107757824
    Equivalent to 6 /8s, 108 /16s and 65 /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        9487       8729      41  CHINAMOBILE-CN China Mobile Communicati
  7545        5728        785     691  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4939       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4272        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3593       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3323       1824      97  VNPT-AS-VN VNPT Corp, VN
  9498        3151        498     251  BBIL-AP BHARTI Airtel Ltd., IN
  7552        2929       1330      20  VIETEL-AS-AP Viettel Group, VN
  4766        2542      11270     601  KIXS-AS-KR Korea Telecom, KR
 24560        2515        849     387  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        9120      10999    3263  AMAZON-02, US
 11492        4532        301     669  CABLEONE, US
  7155        4181        289     102  VIASAT-SP-BACKBONE, US
  6327        3542       1319      66  SHAW, CA
 22773        3540       3055     303  ASN-CXA-ALL-CCI-22773-RDC, US
   749        3151      54959    2403  DNIC-AS-00749, US
   367        3003       3840    1441  DNIC-ASBLK-00306-00371, US
 16625        2984       1419    2276  AKAMAI-AS, US
396982        2699       3597     392  GOOGLE-CLOUD-PLATFORM, US
 30036        2498        358     381  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        7392       1713     145  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4060       3398     153  AKAMAI-ASN1, NL
  8551        3457        368      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2982       2296     915  ROSTELECOM-AS, RU
  9009        2762        256    1417  M247, RO
 34984        2333        362     592  TELLCOM-AS, TR
 58224        1747        928     513  TCI, IR
 13188        1606        100      27  TRIOLAN, UA
  8452        1476       1852      16  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       11835       3367     595  UNINET, MX
 10620        3542        506     852  Telmex Colombia S.A., CO
 13999        2405        334     622  Mega Cable, S.A. de C.V., MX
 11830        2002        369      64  Instituto Costarricense de Electricidad
 28573        1327       2324     232  Claro NXT Telecomunicacoes Ltda, BR
  6503        1302        344     510  Axtel, S.A.B. de C.V., MX
  3816        1295        764     197  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1116        180     430  Techtel LMDS Comunicaciones Interactiva
  6147        1112        369      22  Telefonica del Peru S.A.A., PE
 26615        1031       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        1606        393      19  LINKdotNET-AS, EG
 24835        1549        549      28  RAYA-AS, EG
 36992        1360       1518     280  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1046         67      45  ORANGE-COTE-IVOIRE, CI
 36935         937        521      44  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         529         55      50  WANANCHI-, KE
 37342         489         32       1  MOVITEL, MZ
 24757         473         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       11835       3367     595  UNINET, MX
  9808        9487       8729      41  CHINAMOBILE-CN China Mobile Communicati
 16509        9120      10999    3263  AMAZON-02, US
 12479        7392       1713     145  UNI2-AS, ES
  7545        5728        785     691  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4939       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 11492        4532        301     669  CABLEONE, US
 18403        4272        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4181        289     102  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        9487         9446  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7392         7247  UNI2-AS, ES
 16509        9120         5857  AMAZON-02, US
  7545        5728         5037  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4939         4864  ERX-CERNET-BKB China Education and Research Net
 39891        4897         4836  ALJAWWALSTC-AS, SA
 18403        4272         4247  FPT-AS-AP FPT Telecom Company, VN
  7155        4181         4079  VIASAT-SP-BACKBONE, US
 20940        4060         3907  AKAMAI-ASN1, NL
 11492        4532         3863  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
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      /10:39      /11:101     /12:297     
/13:578     /14:1197    /15:2067    /16:13492   /17:8279    /18:13864   
/19:25160   /20:44368   /21:51221   /22:110249  /23:99088   /24:559109  
/25:742     /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        6479        7392  UNI2-AS, ES
  8151        5869       11835  UNINET, MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3444        4532  CABLEONE, US
  6327        3352        3542  SHAW, CA
  7155        3126        4181  VIASAT-SP-BACKBONE, US
  8551        2925        3457  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2589        3540  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2156        2498  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2106        3542  Telmex Colombia S.A., CO

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

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

   1:2237      2:1419      3:265       4:5         5:4494      6:135    
   7:6         8:1538      9:1        11:172      12:1510     13:375    
  14:2327     15:303      16:198      17:369      18:652      20:286    
  21:4        22:188      23:6418     24:2510     25:2        27:2528   
  29:19       31:2524     32:77       34:26       35:117      36:2005   
  37:4523     38:5348     39:870      40:146      41:3992     42:2087   
  43:2300     44:322      45:16638    46:4303     47:370      49:1836   
  50:1884     51:598      52:1595     54:392      55:963      56:5      
  57:122      58:1869     59:1182     60:1001     61:2515     62:2684   
  63:1917     64:5664     65:2348     66:4943     67:3036     68:1341   
  69:4150     70:1192     71:662      72:2940     74:2623     75:1561   
  76:624      77:2298     78:1827     79:2986     80:2106     81:1817   
  82:1488     83:1297     84:1548     85:3073     86:765      87:2006   
  88:1165     89:3895     90:620      91:7810     92:2065     93:2622   
  94:3513     95:4026     96:1300     97:315      98:1080     99:735    
 100:90      101:1079    102:2844    103:32084   104:4733    105:576    
 106:896     107:2689    108:1129    109:4238    110:2130    111:3192   
 112:2066    113:1817    114:1691    115:1987    116:1901    117:2457   
 118:2688    119:1967    120:1803    121:1180    122:2616    123:2203   
 124:1614    125:2543    128:1475    129:926     130:1043    131:1973   
 132:826     133:408     134:1785    135:305     136:974     137:972    
 138:2632    139:1582    140:1175    141:1316    142:1513    143:1555   
 144:1008    145:349     146:1950    147:1603    148:2445    149:2260   
 150:875     151:1231    152:1870    153:521     154:5109    155:1388   
 156:1954    157:1343    158:1086    159:2239    160:2611    161:1589   
 162:3536    163:1613    164:1700    165:1844    166:1072    167:1739   
 168:3753    169:883     170:4653    171:915     172:3756    173:2970   
 174:984     175:1197    176:3780    177:4429    178:3529    179:2135   
 180:2474    181:3515    182:3362    183:1986    184:2283    185:20596  
 186:4701    187:4185    188:4167    189:3859    190:9222    191:1373   
 192:11005   193:8971    194:7297    195:5222    196:3099    197:2444   
 198:5996    199:6127    200:7925    201:6033    202:10557   203:10021  
 204:4552    205:3694    206:4382    207:3501    208:4165    209:4945   
 210:4495    211:2533    212:4260    213:3410    214:1114    215:57     
 216:6710    217:2776    218:1303    219:577     220:2023    221:981    
 222:842     223:2164   

End of report


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