[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Nov 18 18:02:58 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 19 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:                              915701
    Prefixes after maximum aggregation (per Origin AS):          345977
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      442610
Total ASes present in the Internet Routing Table:                 73817
    Prefixes per ASN:                                             12.41
Origin-only ASes present in the Internet Routing Table:           63392
Origin ASes announcing only one prefix:                           26057
Transit ASes present in the Internet Routing Table:               10425
Transit-only ASes present in the Internet Routing Table:            418
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:              1003
    Number of instances of unregistered ASNs:                      1005
Number of 32-bit ASNs allocated by the RIRs:                      40651
Number of 32-bit ASNs visible in the Routing Table:               33699
Prefixes from 32-bit ASNs in the Routing Table:                  163685
Number of bogon 32-bit ASNs visible in the Routing Table:            14
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            503
Number of addresses announced to Internet:                   3063689728
    Equivalent to 182 /8s, 156 /16s and 50 /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:      311000

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

Prefixes being announced by APNIC Region ASes:                   239240
    Total APNIC prefixes after maximum aggregation:               68157
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          234125
    Unique aggregates announced from the APNIC address blocks:    97106
APNIC Region origin ASes present in the Internet Routing Table:   13085
    APNIC Prefixes per ASN:                                       17.89
APNIC Region origin ASes announcing only one prefix:               3794
APNIC Region transit ASes present in the Internet Routing Table:   1756
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8340
Number of APNIC addresses announced to Internet:              773580928
    Equivalent to 46 /8s, 27 /16s and 232 /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:                    267352
    Total ARIN prefixes after maximum aggregation:               121879
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           268850
    Unique aggregates announced from the ARIN address blocks:    129326
ARIN Region origin ASes present in the Internet Routing Table:    19072
    ARIN Prefixes per ASN:                                        14.10
ARIN Region origin ASes announcing only one prefix:                6974
ARIN Region transit ASes present in the Internet Routing Table:    1931
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:    4681
Number of ARIN addresses announced to Internet:              1289516032
    Equivalent to 76 /8s, 220 /16s and 116 /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:                    262415
    Total RIPE prefixes after maximum aggregation:               121195
    RIPE Deaggregation factor:                                     2.17
Prefixes being announced from the RIPE address blocks:           259147
    Unique aggregates announced from the RIPE address blocks:    154803
RIPE Region origin ASes present in the Internet Routing Table:    28147
    RIPE Prefixes per ASN:                                         9.21
RIPE Region origin ASes announcing only one prefix:               12005
RIPE Region transit ASes present in the Internet Routing Table:    3954
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:   10885
Number of RIPE addresses announced to Internet:               716164992
    Equivalent to 42 /8s, 175 /16s and 207 /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:                  117134
    Total LACNIC prefixes after maximum aggregation:              28331
    LACNIC Deaggregation factor:                                   4.13
Prefixes being announced from the LACNIC address blocks:         116499
    Unique aggregates announced from the LACNIC address blocks:   48937
LACNIC Region origin ASes present in the Internet Routing Table:  11007
    LACNIC Prefixes per ASN:                                      10.58
LACNIC Region origin ASes announcing only one prefix:              2692
LACNIC Region transit ASes present in the Internet Routing Table:  2265
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:  8762
Number of LACNIC addresses announced to Internet:             176021504
    Equivalent to 10 /8s, 125 /16s and 224 /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:                  28557
    Total AfriNIC prefixes after maximum aggregation:              5646
    AfriNIC Deaggregation factor:                                  5.06
Prefixes being announced from the AfriNIC address blocks:         36577
    Unique aggregates announced from the AfriNIC address blocks:  12021
AfriNIC Region origin ASes present in the Internet Routing Table:  1703
    AfriNIC Prefixes per ASN:                                     21.48
AfriNIC Region origin ASes announcing only one prefix:              592
AfriNIC Region transit ASes present in the Internet Routing Table:  323
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: 1031
Number of AfriNIC addresses announced to Internet:            108122112
    Equivalent to 6 /8s, 113 /16s and 208 /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        9128       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5945        786     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4879       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3613       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3516       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3401       1877      66  VNPT-AS-VN VNPT Corp, VN
  9498        2537        499     237  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2536      11252     602  KIXS-AS-KR Korea Telecom, KR
 24560        2288        849     419  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        7635      10621    2909  AMAZON-02, US
 11492        4603        305     506  CABLEONE, US
  7155        3894        265      32  VIASAT-SP-BACKBONE, US
 22773        3742       3062     338  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3564       1861    2556  AKAMAI-AS, US
  6327        3524       1320      63  SHAW, CA
   749        3064      50657    2331  DNIC-AS-00749, US
 30036        2600        372     276  MEDIACOM-ENTERPRISE-BUSINESS, US
  7018        2572      24057    1546  ATT-INTERNET4, US
396982        2564       3482     359  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        6955       1730     144  UNI2-AS, ES
  9121        6712       1692      17  TTNET, TR
 20940        4120       3400     182  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA
  8551        3988        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2955       2290     912  ROSTELECOM-AS, RU
  9009        2643        253    1360  M247, RO
  6849        2332        339      20  UKRTELNET, UA
 34984        2242        357     615  TELLCOM-AS, TR
 47331        2199        336    1670  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       10850       3347     598  Uninet S.A. de C.V., MX
 10620        3454        506     855  Telmex Colombia S.A., CO
 11830        2300        369      64  Instituto Costarricense de Electricidad
 13999        2123        347     551  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        1287        728     154  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1112        182     475  Techtel LMDS Comunicaciones Interactiva
  6147        1087        369      22  Telefonica del Peru S.A.A., PE
 26615         991       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        1355       1520     270  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571         951         65      53  ORANGE-COTE-IVOIRE, CI
 36935         828        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         528         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       10850       3347     598  Uninet S.A. de C.V., MX
  9808        9128       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7635      10621    2909  AMAZON-02, US
 12479        6955       1730     144  UNI2-AS, ES
  9121        6712       1692      17  TTNET, TR
  7545        5945        786     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4879       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4603        305     506  CABLEONE, US
 20940        4120       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        9128         9078  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6955         6811  UNI2-AS, ES
  9121        6712         6695  TTNET, TR
  7545        5945         5249  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4879         4804  ERX-CERNET-BKB China Education and Research Net
 16509        7635         4726  AMAZON-02, US
 11492        4603         4097  CABLEONE, US
 39891        4010         3963  ALJAWWALSTC-AS, SA
  8551        3988         3950  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 20940        4120         3938  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     /14:1200    /15:2044    /16:13523   /17:8346    /18:13931   
/19:25180   /20:44381   /21:52363   /22:110228  /23:98037   /24:544621  
/25:797     /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        5978        6955  UNI2-AS, ES
  9121        5867        6712  TTNET, TR
  8151        4798       10850  Uninet S.A. de C.V., MX
 11492        3509        4603  CABLEONE, US
  8551        3452        3988  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3332        3524  SHAW, CA
 39891        3193        4010  ALJAWWALSTC-AS, SA
  7155        2983        3894  VIASAT-SP-BACKBONE, US
 22773        2765        3742  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2256        2600  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1875      2:1029      3:166       4:5         5:4032      6:118    
   7:5         8:1582      9:1        11:173      12:1616     13:381    
  14:2379     15:287      16:71       17:365      18:383      20:239    
  21:4        22:188      23:6023     24:2468     25:6        27:2703   
  29:19       31:2476     32:90       34:8        35:94       36:1796   
  37:4544     38:3775     39:770      40:144      41:3930     42:1194   
  43:2288     44:300      45:16295    46:4159     47:379      49:1721   
  50:1924     51:244      52:1503     54:398      55:844      56:8      
  57:78       58:1797     59:1162     60:1005     61:2427     62:2578   
  63:1952     64:5641     65:2334     66:4825     67:3011     68:1382   
  69:4160     70:1290     71:681      72:2999     74:2645     75:1471   
  76:600      77:2241     78:3961     79:3156     80:2034     81:1822   
  82:1496     83:1217     84:1505     85:3752     86:733      87:1921   
  88:2835     89:3448     90:569      91:7594     92:2019     93:2567   
  94:3526     95:4834     96:1340     97:348      98:1172     99:740    
 100:69      101:1072    102:2441    103:30387   104:4568    105:479    
 106:827     107:2540    108:921     109:4316    110:2014    111:3312   
 112:2052    113:1564    114:1589    115:2040    116:1906    117:2478   
 118:2327    119:1876    120:1724    121:1113    122:2592    123:2123   
 124:1576    125:2198    128:1254    129:981     130:974     131:2038   
 132:842     133:401     134:1914    135:293     136:877     137:920    
 138:2537    139:1515    140:1104    141:1482    142:1420    143:1403   
 144:1210    145:350     146:1888    147:1513    148:2264    149:1843   
 150:866     151:1149    152:1836    153:455     154:3840    155:1410   
 156:1625    157:1290    158:1038    159:2235    160:2529    161:1421   
 162:3512    163:1456    164:1676    165:1628    166:836     167:1708   
 168:3847    169:917     170:4535    171:855     172:3509    173:3109   
 174:1034    175:1158    176:3611    177:4795    178:3554    179:2137   
 180:2352    181:3341    182:3241    183:1935    184:2355    185:19923  
 186:4550    187:3951    188:4043    189:3426    190:9066    191:1445   
 192:11007   193:8770    194:7186    195:5101    196:2962    197:2478   
 198:6012    199:6087    200:7635    201:5833    202:10574   203:10049  
 204:4607    205:3482    206:3844    207:3398    208:4112    209:4816   
 210:4418    211:2440    212:4052    213:3523    214:1099    215:57     
 216:6546    217:2622    218:1286    219:573     220:2051    221:948    
 222:838     223:2019   

End of report


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