[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Apr 7 18:03:36 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 08 Apr, 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:                              917911
    Prefixes after maximum aggregation (per Origin AS):          348250
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      447962
Total ASes present in the Internet Routing Table:                 74298
    Prefixes per ASN:                                             12.35
Origin-only ASes present in the Internet Routing Table:           63737
Origin ASes announcing only one prefix:                           26192
Transit ASes present in the Internet Routing Table:               10561
Transit-only ASes present in the Internet Routing Table:            448
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:              1103
    Number of instances of unregistered ASNs:                      1103
Number of 32-bit ASNs allocated by the RIRs:                      41624
Number of 32-bit ASNs visible in the Routing Table:               34433
Prefixes from 32-bit ASNs in the Routing Table:                  169845
Number of bogon 32-bit ASNs visible in the Routing Table:            56
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            713
Number of addresses announced to Internet:                   3062021376
    Equivalent to 182 /8s, 130 /16s and 189 /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:      307012

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

Prefixes being announced by APNIC Region ASes:                   242441
    Total APNIC prefixes after maximum aggregation:               69292
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          236823
    Unique aggregates announced from the APNIC address blocks:    97741
APNIC Region origin ASes present in the Internet Routing Table:   13397
    APNIC Prefixes per ASN:                                       17.68
APNIC Region origin ASes announcing only one prefix:               3937
APNIC Region transit ASes present in the Internet Routing Table:   1808
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:   8686
Number of APNIC addresses announced to Internet:              773675648
    Equivalent to 46 /8s, 29 /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:                    268778
    Total ARIN prefixes after maximum aggregation:               122061
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           271173
    Unique aggregates announced from the ARIN address blocks:    130691
ARIN Region origin ASes present in the Internet Routing Table:    19085
    ARIN Prefixes per ASN:                                        14.21
ARIN Region origin ASes announcing only one prefix:                6975
ARIN Region transit ASes present in the Internet Routing Table:    1959
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:    4781
Number of ARIN addresses announced to Internet:              1285572096
    Equivalent to 76 /8s, 160 /16s and 70 /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:                    258784
    Total RIPE prefixes after maximum aggregation:               121878
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           254754
    Unique aggregates announced from the RIPE address blocks:    157516
RIPE Region origin ASes present in the Internet Routing Table:    28287
    RIPE Prefixes per ASN:                                         9.01
RIPE Region origin ASes announcing only one prefix:               12034
RIPE Region transit ASes present in the Internet Routing Table:    3968
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          31
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11116
Number of RIPE addresses announced to Internet:               717837184
    Equivalent to 42 /8s, 201 /16s and 83 /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:                  117557
    Total LACNIC prefixes after maximum aggregation:              28483
    LACNIC Deaggregation factor:                                   4.13
Prefixes being announced from the LACNIC address blocks:         116872
    Unique aggregates announced from the LACNIC address blocks:   49120
LACNIC Region origin ASes present in the Internet Routing Table:  10968
    LACNIC Prefixes per ASN:                                      10.66
LACNIC Region origin ASes announcing only one prefix:              2644
LACNIC Region transit ASes present in the Internet Routing Table:  2289
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8773
Number of LACNIC addresses announced to Internet:             176705536
    Equivalent to 10 /8s, 136 /16s and 80 /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:                  29248
    Total AfriNIC prefixes after maximum aggregation:              5772
    AfriNIC Deaggregation factor:                                  5.07
Prefixes being announced from the AfriNIC address blocks:         37576
    Unique aggregates announced from the AfriNIC address blocks:  12283
AfriNIC Region origin ASes present in the Internet Routing Table:  1729
    AfriNIC Prefixes per ASN:                                     21.73
AfriNIC Region origin ASes announcing only one prefix:              602
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:                       40
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1077
Number of AfriNIC addresses announced to Internet:            107769344
    Equivalent to 6 /8s, 108 /16s and 110 /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        9492       8884      51  CHINAMOBILE-CN China Mobile Communicati
  7545        5744        786     689  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4865       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3563       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3546       1043      65  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3383       1872      93  VNPT-AS-VN VNPT Corp, VN
  9498        2901        491     237  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2555      11252     592  KIXS-AS-KR Korea Telecom, KR
 24560        2363        835     442  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        8269      10783    2879  AMAZON-02, US
 11492        4541        301     610  CABLEONE, US
  7155        3967        279      48  VIASAT-SP-BACKBONE, US
 22773        3608       3057     281  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3514       1320      64  SHAW, CA
 16625        3160       1589    2342  AKAMAI-AS, US
   749        3054      50541    2321  DNIC-AS-00749, US
396982        2631       3590     363  GOOGLE-CLOUD-PLATFORM, US
  7018        2565      24118    1562  ATT-INTERNET4, US
 30036        2488        359     526  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        7244       1705     149  UNI2-AS, ES
 39891        4833        286      59  ALJAWWALSTC-AS, SA
 20940        4058       3399     164  AKAMAI-ASN1, NL
  8551        3885        370      37  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2954       2292     911  ROSTELECOM-AS, RU
  9009        2646        248    1379  M247, RO
 34984        2272        359     611  TELLCOM-AS, TR
  6849        2076        307      18  UKRTELNET, UA
 58224        1850        950     543  TCI, IR
 13188        1606        100      26  TRIOLAN, 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       11211       3343     578  Uninet S.A. de C.V., MX
 10620        3499        506     850  Telmex Colombia S.A., CO
 13999        2311        370     610  Mega Cable, S.A. de C.V., MX
 11830        2264        369      64  Instituto Costarricense de Electricidad
 28573        1332       2325     235  Claro NXT Telecomunicacoes Ltda, BR
  3816        1303        767     159  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1299        339     514  Axtel, S.A.B. de C.V., MX
  6147        1131        370      22  Telefonica del Peru S.A.A., PE
 11664        1101        180     446  Techtel LMDS Comunicaciones Interactiva
 26615        1030       2498      45  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        1576        393      19  LINKdotNET-AS, EG
 24835        1541        533      30  RAYA-AS, EG
 36992        1356       1518     275  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1016         67      48  ORANGE-COTE-IVOIRE, CI
 36935         872        520      42  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         532         54      47  WANANCHI-, KE
 37342         493         32       1  MOVITEL, MZ
 24757         488         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       11211       3343     578  Uninet S.A. de C.V., MX
  9808        9492       8884      51  CHINAMOBILE-CN China Mobile Communicati
 16509        8269      10783    2879  AMAZON-02, US
 12479        7244       1705     149  UNI2-AS, ES
  7545        5744        786     689  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4865       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4833        286      59  ALJAWWALSTC-AS, SA
 11492        4541        301     610  CABLEONE, US
 20940        4058       3399     164  AKAMAI-ASN1, NL
  7155        3967        279      48  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        9492         9441  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7244         7095  UNI2-AS, ES
 16509        8269         5390  AMAZON-02, US
  7545        5744         5055  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4865         4790  ERX-CERNET-BKB China Education and Research Net
 39891        4833         4774  ALJAWWALSTC-AS, SA
 11492        4541         3931  CABLEONE, US
  7155        3967         3919  VIASAT-SP-BACKBONE, US
 20940        4058         3894  AKAMAI-ASN1, NL
  8551        3885         3848  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
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     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
     18798  UNALLOCATED  8.40.106.0/24             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
23.131.185.0/24      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     
/13:578     /14:1198    /15:2036    /16:13471   /17:8269    /18:13858   
/19:25180   /20:44264   /21:51593   /22:109702  /23:97592   /24:548972  
/25:728     /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        6305        7244  UNI2-AS, ES
  8151        5175       11211  Uninet S.A. de C.V., MX
 39891        3632        4833  ALJAWWALSTC-AS, SA
 11492        3449        4541  CABLEONE, US
  8551        3357        3885  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3323        3514  SHAW, CA
  7155        3039        3967  VIASAT-SP-BACKBONE, US
 22773        2675        3608  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2145        2488  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2053        3499  Telmex Colombia S.A., CO

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

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

   1:1703      2:1237      3:172       4:5         5:4485      6:122    
   7:6         8:1548      9:1        11:172      12:1558     13:394    
  14:2310     15:299      16:185      17:371      18:417      20:248    
  21:4        22:188      23:6158     24:2578     25:6        27:2491   
  29:19       31:2524     32:97       34:10       35:107      36:1918   
  37:4644     38:4453     39:805      40:151      41:3959     42:987    
  43:2345     44:308      45:16542    46:4238     47:363      49:1758   
  50:1837     51:571      52:1595     54:389      55:855      56:8      
  57:90       58:1756     59:1128     60:978      61:2444     62:2648   
  63:1923     64:5689     65:2327     66:4946     67:3020     68:1375   
  69:4154     70:1255     71:671      72:2974     74:2615     75:1464   
  76:610      77:2433     78:1863     79:3163     80:2096     81:1745   
  82:1485     83:1279     84:1533     85:2992     86:747      87:2003   
  88:1240     89:3626     90:614      91:7687     92:2058     93:2616   
  94:3598     95:3996     96:1328     97:336      98:1157     99:745    
 100:73      101:1069    102:2646    103:31259   104:4640    105:483    
 106:906     107:2507    108:1022    109:4418    110:2079    111:3233   
 112:2054    113:1563    114:1640    115:2028    116:1933    117:2559   
 118:2284    119:2023    120:1798    121:1109    122:2624    123:2188   
 124:1615    125:2537    128:1312    129:1063    130:1002    131:1986   
 132:801     133:422     134:1902    135:305     136:839     137:945    
 138:2549    139:1538    140:1234    141:1458    142:1432    143:1499   
 144:1165    145:346     146:1936    147:1572    148:2345    149:2009   
 150:870     151:1155    152:1843    153:489     154:4411    155:1421   
 156:1801    157:1301    158:1054    159:2280    160:2537    161:1532   
 162:3526    163:1504    164:1592    165:1713    166:1004    167:1717   
 168:3883    169:939     170:4605    171:880     172:3536    173:2934   
 174:1072    175:1154    176:3682    177:4546    178:3628    179:2145   
 180:2410    181:3435    182:3376    183:1929    184:2353    185:20177  
 186:4678    187:3945    188:4117    189:3559    190:9158    191:1447   
 192:10923   193:8851    194:7300    195:5152    196:3085    197:2377   
 198:5966    199:6088    200:7895    201:5878    202:10672   203:10223  
 204:4623    205:3540    206:4127    207:3457    208:4103    209:4894   
 210:4433    211:2496    212:4101    213:3573    214:1083    215:59     
 216:6622    217:2681    218:1295    219:576     220:2018    221:973    
 222:890     223:2182   

End of report


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