[cmNOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Feb 10 18:03:24 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
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 11 Feb, 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:                              920384
    Prefixes after maximum aggregation (per Origin AS):          348127
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      446226
Total ASes present in the Internet Routing Table:                 74115
    Prefixes per ASN:                                             12.42
Origin-only ASes present in the Internet Routing Table:           63573
Origin ASes announcing only one prefix:                           26124
Transit ASes present in the Internet Routing Table:               10542
Transit-only ASes present in the Internet Routing Table:            443
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:              1056
    Number of instances of unregistered ASNs:                      1066
Number of 32-bit ASNs allocated by the RIRs:                      41188
Number of 32-bit ASNs visible in the Routing Table:               34158
Prefixes from 32-bit ASNs in the Routing Table:                  166962
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:            565
Number of addresses announced to Internet:                   3062784384
    Equivalent to 182 /8s, 142 /16s and 97 /24s
    Percentage of available address space announced:               82.7
    Percentage of allocated address space announced:               82.7
    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:      312525

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

Prefixes being announced by APNIC Region ASes:                   241005
    Total APNIC prefixes after maximum aggregation:               69026
    APNIC Deaggregation factor:                                    3.49
Prefixes being announced from the APNIC address blocks:          235937
    Unique aggregates announced from the APNIC address blocks:    97970
APNIC Region origin ASes present in the Internet Routing Table:   13286
    APNIC Prefixes per ASN:                                       17.76
APNIC Region origin ASes announcing only one prefix:               3843
APNIC Region transit ASes present in the Internet Routing Table:   1781
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8568
Number of APNIC addresses announced to Internet:              773609984
    Equivalent to 46 /8s, 28 /16s and 90 /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, 131072-151865
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:                    267451
    Total ARIN prefixes after maximum aggregation:               121409
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           269443
    Unique aggregates announced from the ARIN address blocks:    130373
ARIN Region origin ASes present in the Internet Routing Table:    19074
    ARIN Prefixes per ASN:                                        14.13
ARIN Region origin ASes announcing only one prefix:                6986
ARIN Region transit ASes present in the Internet Routing Table:    1965
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4742
Number of ARIN addresses announced to Internet:              1286042368
    Equivalent to 76 /8s, 167 /16s and 115 /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:                    264443
    Total RIPE prefixes after maximum aggregation:               122662
    RIPE Deaggregation factor:                                     2.16
Prefixes being announced from the RIPE address blocks:           261014
    Unique aggregates announced from the RIPE address blocks:    156354
RIPE Region origin ASes present in the Internet Routing Table:    28212
    RIPE Prefixes per ASN:                                         9.25
RIPE Region origin ASes announcing only one prefix:               12030
RIPE Region transit ASes present in the Internet Routing Table:    3976
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          38
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11012
Number of RIPE addresses announced to Internet:               718416000
    Equivalent to 42 /8s, 210 /16s and 40 /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
                       196608-213403
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:                  117307
    Total LACNIC prefixes after maximum aggregation:              28508
    LACNIC Deaggregation factor:                                   4.11
Prefixes being announced from the LACNIC address blocks:         116532
    Unique aggregates announced from the LACNIC address blocks:   49047
LACNIC Region origin ASes present in the Internet Routing Table:  10983
    LACNIC Prefixes per ASN:                                      10.61
LACNIC Region origin ASes announcing only one prefix:              2661
LACNIC Region transit ASes present in the Internet Routing Table:  2285
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:  8770
Number of LACNIC addresses announced to Internet:             176338432
    Equivalent to 10 /8s, 130 /16s and 182 /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:                  29122
    Total AfriNIC prefixes after maximum aggregation:              5745
    AfriNIC Deaggregation factor:                                  5.07
Prefixes being announced from the AfriNIC address blocks:         36893
    Unique aggregates announced from the AfriNIC address blocks:  12033
AfriNIC Region origin ASes present in the Internet Routing Table:  1721
    AfriNIC Prefixes per ASN:                                     21.44
AfriNIC Region origin ASes announcing only one prefix:              604
AfriNIC Region transit ASes present in the Internet Routing Table:  331
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1066
Number of AfriNIC addresses announced to Internet:            108038144
    Equivalent to 6 /8s, 112 /16s and 136 /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        9454       8884      51  CHINAMOBILE-CN China Mobile Communicati
  7545        5852        786     702  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4856       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3637       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3517       1043      65  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3381       1874      96  VNPT-AS-VN VNPT Corp, VN
  9498        2750        499     238  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2532      11251     592  KIXS-AS-KR Korea Telecom, KR
 24560        2360        842     441  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2184       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

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        7959      10737    2842  AMAZON-02, US
 11492        4534        300     598  CABLEONE, US
  7155        3899        265      33  VIASAT-SP-BACKBONE, US
 22773        3652       3063     286  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3503       1320      63  SHAW, CA
 16625        3309       1672    2425  AKAMAI-AS, US
   749        3037      50571    2304  DNIC-AS-00749, US
396982        2601       3583     349  GOOGLE-CLOUD-PLATFORM, US
  7018        2591      24127    1573  ATT-INTERNET4, US
 30036        2556        366     377  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        6992       1706     146  UNI2-AS, ES
  9121        6089       1692      17  TTNET, TR
 39891        4561        269      58  ALJAWWALSTC-AS, SA
 20940        4019       3399     175  AKAMAI-ASN1, NL
  8551        3893        370      37  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2949       2292     910  ROSTELECOM-AS, RU
  9009        2694        256    1375  M247, RO
 47331        2565        386    1935  TTNET, TR
 34984        2266        359     609  TELLCOM-AS, TR
  6849        2252        339      19  UKRTELNET, UA

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       11113       3348     587  Uninet S.A. de C.V., MX
 10620        3476        507     862  Telmex Colombia S.A., CO
 11830        2262        369      64  Instituto Costarricense de Electricidad
 13999        2246        375     606  Mega Cable, S.A. de C.V., MX
 28573        1351       2328     263  Claro NXT Telecomunicacoes Ltda, BR
  6503        1297        339     517  Axtel, S.A.B. de C.V., MX
  3816        1292        746     156  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1150        369      22  Telefonica del Peru S.A.A., PE
 11664        1098        180     458  Techtel LMDS Comunicaciones Interactiva
 26615        1018       2466      43  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
 24835        1540        533      30  RAYA-AS, EG
 24863        1501        393      21  LINKdotNET-AS, EG
 36992        1348       1517     277  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571         998         67      53  ORANGE-COTE-IVOIRE, CI
 36935         885        520      42  Vodafone-, EG
  6713         549       1861      34  IAM-AS, MA
 15399         511         52      41  WANANCHI-, KE
 24757         495         73       5  EthioNet-AS, ET
 37342         494         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       11113       3348     587  Uninet S.A. de C.V., MX
  9808        9454       8884      51  CHINAMOBILE-CN China Mobile Communicati
 16509        7959      10737    2842  AMAZON-02, US
 12479        6992       1706     146  UNI2-AS, ES
  9121        6089       1692      17  TTNET, TR
  7545        5852        786     702  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4856       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4561        269      58  ALJAWWALSTC-AS, SA
 11492        4534        300     598  CABLEONE, US
 20940        4019       3399     175  AKAMAI-ASN1, NL

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

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        9454         9403  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6992         6846  UNI2-AS, ES
  9121        6089         6072  TTNET, TR
  7545        5852         5150  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        7959         5117  AMAZON-02, US
  4538        4856         4781  ERX-CERNET-BKB China Education and Research Net
 39891        4561         4503  ALJAWWALSTC-AS, SA
 11492        4534         3936  CABLEONE, US
  7155        3899         3866  VIASAT-SP-BACKBONE, US
  8551        3893         3856  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo

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
      3507  UNALLOCATED  5.105.166.0/24          213035  AS-SERVERION Serverion B.V.,
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     16641  UNALLOCATED  8.10.194.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.10.210.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.12.76.0/24              3356  LEVEL3, US
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.14.115.0/24             3356  LEVEL3, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     25674  UNALLOCATED  8.19.146.0/24             3356  LEVEL3, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, 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
23.131.185.0/24      Origin:       174  COGENT-174, US
23.131.185.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.186.0/24      Origin:       174  COGENT-174, US
23.131.186.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.187.0/24      Origin:       174  COGENT-174, US
23.131.187.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.188.0/24      Origin:       174  COGENT-174, US
23.131.188.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR

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       /9:13      /10:39      /11:103     /12:299     
/13:580     /14:1203    /15:2040    /16:13481   /17:8300    /18:13897   
/19:25214   /20:44317   /21:52396   /22:110296  /23:98305   /24:549065  
/25:820     /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        6057        6992  UNI2-AS, ES
  9121        5267        6089  TTNET, TR
  8151        5117       11113  Uninet S.A. de C.V., MX
 39891        3552        4561  ALJAWWALSTC-AS, SA
 11492        3449        4534  CABLEONE, US
  8551        3365        3893  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3311        3503  SHAW, CA
  7155        2988        3899  VIASAT-SP-BACKBONE, US
 22773        2703        3652  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2213        2556  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1659      2:1238      3:168       4:5         5:4316      6:113    
   7:5         8:1557      9:1        11:172      12:1586     13:392    
  14:2348     15:290      16:79       17:366      18:401      20:244    
  21:4        22:188      23:6057     24:2509     25:4        27:2597   
  29:19       31:2510     32:105      34:8        35:106      36:1895   
  37:4585     38:4122     39:839      40:154      41:4038     42:1067   
  43:2335     44:304      45:16373    46:4166     47:382      49:1750   
  50:1835     51:372      52:1563     54:394      55:866      56:8      
  57:80       58:1741     59:1163     60:991      61:2431     62:2633   
  63:1932     64:5673     65:2327     66:4929     67:3045     68:1349   
  69:4155     70:1253     71:662      72:2987     74:2601     75:1457   
  76:603      77:2388     78:3886     79:3182     80:2081     81:1855   
  82:1483     83:1237     84:1527     85:3734     86:758      87:1960   
  88:2846     89:3581     90:593      91:7639     92:2014     93:2593   
  94:3536     95:4850     96:1331     97:347      98:1161     99:744    
 100:75      101:1067    102:2552    103:30931   104:4500    105:485    
 106:856     107:2523    108:919     109:4369    110:2088    111:3342   
 112:2047    113:1551    114:1615    115:2039    116:1902    117:2554   
 118:2290    119:1933    120:1768    121:1118    122:2594    123:2167   
 124:1605    125:2381    128:1316    129:1068    130:989     131:1995   
 132:801     133:406     134:1910    135:315     136:862     137:926    
 138:2546    139:1545    140:1184    141:1479    142:1425    143:1476   
 144:1202    145:349     146:1879    147:1557    148:2286    149:1902   
 150:870     151:1143    152:1828    153:481     154:3928    155:1413   
 156:1673    157:1296    158:1010    159:2265    160:2543    161:1411   
 162:3523    163:1538    164:1597    165:1665    166:846     167:1726   
 168:3874    169:921     170:4570    171:897     172:3513    173:2974   
 174:1028    175:1163    176:3710    177:4585    178:3580    179:2152   
 180:2372    181:3400    182:3280    183:1931    184:2340    185:20007  
 186:4650    187:3946    188:4114    189:3510    190:9091    191:1454   
 192:10961   193:8817    194:7242    195:5115    196:3057    197:2412   
 198:5961    199:6083    200:7755    201:5886    202:10646   203:10020  
 204:4606    205:3516    206:3864    207:3431    208:4084    209:4840   
 210:4446    211:2499    212:4109    213:3554    214:1098    215:55     
 216:6605    217:2652    218:1278    219:573     220:2024    221:970    
 222:866     223:2100   

End of report


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