[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Nov 11 18:02:56 UTC 2022


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 12 Nov, 2022

  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:                              914964
    Prefixes after maximum aggregation (per Origin AS):          345602
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      441991
Total ASes present in the Internet Routing Table:                 73771
    Prefixes per ASN:                                             12.40
Origin-only ASes present in the Internet Routing Table:           63375
Origin ASes announcing only one prefix:                           26011
Transit ASes present in the Internet Routing Table:               10396
Transit-only ASes present in the Internet Routing Table:            421
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:              1047
    Number of instances of unregistered ASNs:                      1049
Number of 32-bit ASNs allocated by the RIRs:                      40587
Number of 32-bit ASNs visible in the Routing Table:               33639
Prefixes from 32-bit ASNs in the Routing Table:                  163086
Number of bogon 32-bit ASNs visible in the Routing Table:            10
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            520
Number of addresses announced to Internet:                   3064036352
    Equivalent to 182 /8s, 161 /16s and 124 /24s
    Percentage of available address space announced:               82.8
    Percentage of allocated address space announced:               82.8
    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:      310802

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

Prefixes being announced by APNIC Region ASes:                   239088
    Total APNIC prefixes after maximum aggregation:               68087
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          233936
    Unique aggregates announced from the APNIC address blocks:    96889
APNIC Region origin ASes present in the Internet Routing Table:   13046
    APNIC Prefixes per ASN:                                       17.93
APNIC Region origin ASes announcing only one prefix:               3757
APNIC Region transit ASes present in the Internet Routing Table:   1749
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         28
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8299
Number of APNIC addresses announced to Internet:              773753216
    Equivalent to 46 /8s, 30 /16s and 137 /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:                    267115
    Total ARIN prefixes after maximum aggregation:               121839
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           268506
    Unique aggregates announced from the ARIN address blocks:    129060
ARIN Region origin ASes present in the Internet Routing Table:    19064
    ARIN Prefixes per ASN:                                        14.08
ARIN Region origin ASes announcing only one prefix:                6977
ARIN Region transit ASes present in the Internet Routing Table:    1932
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4678
Number of ARIN addresses announced to Internet:              1289548800
    Equivalent to 76 /8s, 220 /16s and 244 /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:                    262050
    Total RIPE prefixes after maximum aggregation:               121085
    RIPE Deaggregation factor:                                     2.16
Prefixes being announced from the RIPE address blocks:           258948
    Unique aggregates announced from the RIPE address blocks:    154970
RIPE Region origin ASes present in the Internet Routing Table:    28150
    RIPE Prefixes per ASN:                                         9.20
RIPE Region origin ASes announcing only one prefix:               12001
RIPE Region transit ASes present in the Internet Routing Table:    3946
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10869
Number of RIPE addresses announced to Internet:               716379776
    Equivalent to 42 /8s, 179 /16s and 22 /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:                  117020
    Total LACNIC prefixes after maximum aggregation:              28176
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         116457
    Unique aggregates announced from the LACNIC address blocks:   48612
LACNIC Region origin ASes present in the Internet Routing Table:  10991
    LACNIC Prefixes per ASN:                                      10.60
LACNIC Region origin ASes announcing only one prefix:              2681
LACNIC Region transit ASes present in the Internet Routing Table:  2252
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:  8757
Number of LACNIC addresses announced to Internet:             175986688
    Equivalent to 10 /8s, 125 /16s and 88 /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:                  28644
    Total AfriNIC prefixes after maximum aggregation:              5631
    AfriNIC Deaggregation factor:                                  5.09
Prefixes being announced from the AfriNIC address blocks:         36597
    Unique aggregates announced from the AfriNIC address blocks:  12028
AfriNIC Region origin ASes present in the Internet Routing Table:  1708
    AfriNIC Prefixes per ASN:                                     21.43
AfriNIC Region origin ASes announcing only one prefix:              595
AfriNIC Region transit ASes present in the Internet Routing Table:  329
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       37
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1036
Number of AfriNIC addresses announced to Internet:            108078848
    Equivalent to 6 /8s, 113 /16s and 39 /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        9132       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5946        786     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4872       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3611       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3509       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3392       1877      66  VNPT-AS-VN VNPT Corp, VN
  4766        2536      11252     602  KIXS-AS-KR Korea Telecom, KR
  9498        2526        499     237  BBIL-AP BHARTI Airtel Ltd., IN
 24560        2275        849     418  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2180       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        7582      10612    2927  AMAZON-02, US
 11492        4586        304     543  CABLEONE, US
  7155        3898        265      32  VIASAT-SP-BACKBONE, US
 22773        3749       3060     338  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3572       1868    2552  AKAMAI-AS, US
  6327        3525       1320      63  SHAW, CA
   749        3055      50656    2322  DNIC-AS-00749, US
 30036        2601        372     270  MEDIACOM-ENTERPRISE-BUSINESS, US
  7018        2578      24058    1553  ATT-INTERNET4, US
396982        2562       3481     356  GOOGLE-CLOUD-PLATFORM, 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        6936       1730     144  UNI2-AS, ES
  9121        6716       1692      17  TTNET, TR
 20940        4115       3400     182  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA
  8551        3981        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2954       2290     913  ROSTELECOM-AS, RU
  9009        2625        252    1353  M247, RO
  6849        2374        339      20  UKRTELNET, UA
 34984        2241        357     614  TELLCOM-AS, TR
 47331        2203        337    1671  TTNET, TR

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       10821       3347     601  Uninet S.A. de C.V., MX
 10620        3476        511     837  Telmex Colombia S.A., CO
 11830        2300        369      64  Instituto Costarricense de Electricidad
 13999        2112        343     548  Mega Cable, S.A. de C.V., MX
 28573        1336       2328     260  Claro NXT Telecomunicacoes Ltda, BR
  6503        1293        338     521  Axtel, S.A.B. de C.V., MX
  3816        1286        726     153  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1112        182     474  Techtel LMDS Comunicaciones Interactiva
  6147        1087        369      22  Telefonica del Peru S.A.A., PE
 26615         992       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
 24863        1572        393      21  LINKdotNET-AS, EG
 24835        1545        521      31  RAYA-AS, EG
 36992        1354       1520     270  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1011         68      37  ORANGE-COTE-IVOIRE, CI
 36935         828        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         527         53      43  WANANCHI-, KE
 37342         494         32       1  MOVITEL, MZ
 23889         400        231      14  MauritiusTelecom, MU

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       10821       3347     601  Uninet S.A. de C.V., MX
  9808        9132       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7582      10612    2927  AMAZON-02, US
 12479        6936       1730     144  UNI2-AS, ES
  9121        6716       1692      17  TTNET, TR
  7545        5946        786     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4872       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4586        304     543  CABLEONE, US
 20940        4115       3400     182  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA

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

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

   ASN  No of nets  Net Savings  Description
  9808        9132         9082  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6936         6792  UNI2-AS, ES
  9121        6716         6699  TTNET, TR
  7545        5946         5251  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4872         4797  ERX-CERNET-BKB China Education and Research Net
 16509        7582         4655  AMAZON-02, US
 11492        4586         4043  CABLEONE, US
 39891        4010         3963  ALJAWWALSTC-AS, SA
  8551        3981         3943  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 20940        4115         3933  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
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     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
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR
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  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.181.240.0/24      Origin:    399613  UNASSIGNED
23.181.240.0/24     Transit:     11992  CENTENNIAL-, PR
27.100.7.0/24        Origin:     56096  UNASSIGNED
27.100.7.0/24       Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 

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      /11:100     /12:295     
/13:587     /14:1199    /15:2046    /16:13522   /17:8347    /18:13980   
/19:25193   /20:44380   /21:52336   /22:110089  /23:97970   /24:544024  
/25:828     /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        5949        6936  UNI2-AS, ES
  9121        5872        6716  TTNET, TR
  8151        4772       10821  Uninet S.A. de C.V., MX
 11492        3494        4586  CABLEONE, US
  8551        3445        3981  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3333        3525  SHAW, CA
 39891        3193        4010  ALJAWWALSTC-AS, SA
  7155        2987        3898  VIASAT-SP-BACKBONE, US
 22773        2773        3749  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2257        2601  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1908      2:1027      3:166       4:5         5:4024      6:120    
   7:5         8:1583      9:1        11:173      12:1620     13:352    
  14:2377     15:287      16:71       17:363      18:381      20:239    
  21:4        22:188      23:6018     24:2467     25:6        27:2701   
  29:19       31:2484     32:93       34:8        35:95       36:1791   
  37:4532     38:3751     39:773      40:144      41:3944     42:1184   
  43:2249     44:300      45:16312    46:4173     47:377      49:1721   
  50:1925     51:244      52:1498     54:397      55:845      56:8      
  57:78       58:1795     59:1163     60:1006     61:2417     62:2571   
  63:1957     64:5624     65:2328     66:4826     67:3006     68:1379   
  69:4156     70:1296     71:679      72:3001     74:2647     75:1476   
  76:600      77:2246     78:3969     79:3152     80:2032     81:1814   
  82:1493     83:1207     84:1469     85:3738     86:729      87:1923   
  88:2838     89:3442     90:551      91:7603     92:2033     93:2554   
  94:3524     95:4828     96:1337     97:348      98:1174     99:739    
 100:69      101:1072    102:2418    103:30324   104:4544    105:479    
 106:890     107:2542    108:921     109:4330    110:2017    111:3316   
 112:2049    113:1560    114:1584    115:2026    116:1903    117:2479   
 118:2325    119:1857    120:1710    121:1112    122:2585    123:2116   
 124:1555    125:2191    128:1254    129:979     130:972     131:2035   
 132:848     133:378     134:1914    135:291     136:884     137:909    
 138:2526    139:1515    140:1110    141:1481    142:1419    143:1397   
 144:1197    145:351     146:1878    147:1537    148:2257    149:1836   
 150:873     151:1145    152:1830    153:455     154:3847    155:1429   
 156:1615    157:1298    158:1041    159:2209    160:2591    161:1389   
 162:3505    163:1448    164:1674    165:1627    166:831     167:1706   
 168:3834    169:907     170:4532    171:852     172:3478    173:3106   
 174:1036    175:1152    176:3623    177:4785    178:3529    179:2122   
 180:2352    181:3349    182:3243    183:1935    184:2352    185:19903  
 186:4551    187:3968    188:4016    189:3446    190:9071    191:1414   
 192:11001   193:8771    194:7192    195:5103    196:2984    197:2483   
 198:6005    199:6066    200:7614    201:5833    202:10573   203:10060  
 204:4599    205:3479    206:3861    207:3400    208:4098    209:4812   
 210:4394    211:2440    212:4036    213:3512    214:1095    215:53     
 216:6527    217:2621    218:1290    219:572     220:2052    221:926    
 222:840     223:2020   

End of report


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