[afnog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri May 5 18:03:43 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 06 May, 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:                              921175
    Prefixes after maximum aggregation (per Origin AS):          349130
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      448298
Total ASes present in the Internet Routing Table:                 74403
    Prefixes per ASN:                                             12.38
Origin-only ASes present in the Internet Routing Table:           63835
Origin ASes announcing only one prefix:                           26244
Transit ASes present in the Internet Routing Table:               10568
Transit-only ASes present in the Internet Routing Table:            439
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                     127
    Max AS path prepend of ASN (150261)                             120
Prefixes from unregistered ASNs in the Routing Table:              1077
    Number of instances of unregistered ASNs:                      1077
Number of 32-bit ASNs allocated by the RIRs:                      41797
Number of 32-bit ASNs visible in the Routing Table:               34561
Prefixes from 32-bit ASNs in the Routing Table:                  170988
Number of bogon 32-bit ASNs visible in the Routing Table:            13
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            621
Number of addresses announced to Internet:                   3059771008
    Equivalent to 182 /8s, 96 /16s and 102 /24s
    Percentage of available address space announced:               82.6
    Percentage of allocated address space announced:               82.6
    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:      307475

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

Prefixes being announced by APNIC Region ASes:                   243936
    Total APNIC prefixes after maximum aggregation:               69409
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          238075
    Unique aggregates announced from the APNIC address blocks:    97934
APNIC Region origin ASes present in the Internet Routing Table:   13424
    APNIC Prefixes per ASN:                                       17.74
APNIC Region origin ASes announcing only one prefix:               3961
APNIC Region transit ASes present in the Internet Routing Table:   1801
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                        127
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8728
Number of APNIC addresses announced to Internet:              773529088
    Equivalent to 46 /8s, 27 /16s and 30 /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:                    269600
    Total ARIN prefixes after maximum aggregation:               122444
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           272217
    Unique aggregates announced from the ARIN address blocks:    130042
ARIN Region origin ASes present in the Internet Routing Table:    19092
    ARIN Prefixes per ASN:                                        14.26
ARIN Region origin ASes announcing only one prefix:                6968
ARIN Region transit ASes present in the Internet Routing Table:    1954
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:    4794
Number of ARIN addresses announced to Internet:              1283932416
    Equivalent to 76 /8s, 135 /16s and 65 /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:                    259442
    Total RIPE prefixes after maximum aggregation:               122186
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           255549
    Unique aggregates announced from the RIPE address blocks:    158227
RIPE Region origin ASes present in the Internet Routing Table:    28334
    RIPE Prefixes per ASN:                                         9.02
RIPE Region origin ASes announcing only one prefix:               12072
RIPE Region transit ASes present in the Internet Routing Table:    3964
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          30
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11174
Number of RIPE addresses announced to Internet:               718147200
    Equivalent to 42 /8s, 206 /16s and 14 /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:                  117998
    Total LACNIC prefixes after maximum aggregation:              28501
    LACNIC Deaggregation factor:                                   4.14
Prefixes being announced from the LACNIC address blocks:         117269
    Unique aggregates announced from the LACNIC address blocks:   49386
LACNIC Region origin ASes present in the Internet Routing Table:  10991
    LACNIC Prefixes per ASN:                                      10.67
LACNIC Region origin ASes announcing only one prefix:              2637
LACNIC Region transit ASes present in the Internet Routing Table:  2305
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:  8784
Number of LACNIC addresses announced to Internet:             176697088
    Equivalent to 10 /8s, 136 /16s and 47 /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:              5811
    AfriNIC Deaggregation factor:                                  5.01
Prefixes being announced from the AfriNIC address blocks:         37444
    Unique aggregates announced from the AfriNIC address blocks:  12195
AfriNIC Region origin ASes present in the Internet Routing Table:  1732
    AfriNIC Prefixes per ASN:                                     21.62
AfriNIC Region origin ASes announcing only one prefix:              606
AfriNIC Region transit ASes present in the Internet Routing Table:  335
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       30
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1081
Number of AfriNIC addresses announced to Internet:            107053312
    Equivalent to 6 /8s, 97 /16s and 129 /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        9486       8706      40  CHINAMOBILE-CN China Mobile Communicati
  7545        5726        787     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4863       4192      75  ERX-CERNET-BKB China Education and Rese
 45899        4053       1877      47  VNPT-AS-VN VNPT Corp, VN
  7713        3548       1043      65  TELKOMNET-AS-AP PT Telekomunikasi Indon
  7552        3227       1331      21  VIETEL-AS-AP Viettel Group, VN
  9498        2949        490     235  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2551      11251     591  KIXS-AS-KR Korea Telecom, KR
 24560        2385        836     446  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        8289      10784    2931  AMAZON-02, US
 11492        4533        300     610  CABLEONE, US
  7155        3975        281      51  VIASAT-SP-BACKBONE, US
 22773        3587       3057     283  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3525       1320      64  SHAW, CA
 16625        3121       1581    2362  AKAMAI-AS, US
   749        3101      54980    2353  DNIC-AS-00749, US
396982        2637       3591     368  GOOGLE-CLOUD-PLATFORM, US
  7018        2515      24151    1580  ATT-INTERNET4, US
 30036        2504        360     437  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        7282       1707     141  UNI2-AS, ES
 39891        4833        286      59  ALJAWWALSTC-AS, SA
 20940        4090       3399     164  AKAMAI-ASN1, NL
  8551        3882        370      37  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2952       2292     909  ROSTELECOM-AS, RU
  9009        2699        250    1394  M247, RO
 34984        2273        359     611  TELLCOM-AS, TR
  6849        2018        307      18  UKRTELNET, UA
 58224        1853        950     535  TCI, IR
 13188        1607        100      18  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       11260       3328     593  Uninet S.A. de C.V., MX
 10620        3509        507     854  Telmex Colombia S.A., CO
 13999        2343        360     621  Mega Cable, S.A. de C.V., MX
 11830        2270        369      64  Instituto Costarricense de Electricidad
 28573        1331       2324     240  Claro NXT Telecomunicacoes Ltda, BR
  6503        1299        339     514  Axtel, S.A.B. de C.V., MX
  3816        1293        760     170  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1132        370      22  Telefonica del Peru S.A.A., PE
 11664        1099        180     448  Techtel LMDS Comunicaciones Interactiva
 26615        1035       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        1591        393      19  LINKdotNET-AS, EG
 24835        1553        533      30  RAYA-AS, EG
 36992        1338       1518     275  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1021         67      46  ORANGE-COTE-IVOIRE, CI
 36935         875        520      42  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         533         54      48  WANANCHI-, KE
 37342         489         32       1  MOVITEL, MZ
 24757         485         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       11260       3328     593  Uninet S.A. de C.V., MX
  9808        9486       8706      40  CHINAMOBILE-CN China Mobile Communicati
 16509        8289      10784    2931  AMAZON-02, US
 12479        7282       1707     141  UNI2-AS, ES
  7545        5726        787     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4863       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4833        286      59  ALJAWWALSTC-AS, SA
 11492        4533        300     610  CABLEONE, US
 20940        4090       3399     164  AKAMAI-ASN1, NL
 45899        4053       1877      47  VNPT-AS-VN VNPT Corp, VN

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

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

   ASN  No of nets  Net Savings  Description
  9808        9486         9446  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7282         7141  UNI2-AS, ES
 16509        8289         5358  AMAZON-02, US
  7545        5726         5032  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4863         4788  ERX-CERNET-BKB China Education and Research Net
 39891        4833         4774  ALJAWWALSTC-AS, SA
 45899        4053         4006  VNPT-AS-VN VNPT Corp, VN
 20940        4090         3926  AKAMAI-ASN1, NL
  7155        3975         3924  VIASAT-SP-BACKBONE, US
 11492        4533         3923  CABLEONE, US

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
      3507  UNALLOCATED  5.105.69.0/24           213035  AS-SERVERION Serverion B.V.,
      3507  UNALLOCATED  5.105.206.0/24          213035  AS-SERVERION Serverion B.V.,
     33492  UNALLOCATED  8.6.184.0/23             33650  COMCAST-33650, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     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

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
23.139.232.0/24      Origin:    211619  MAXKO, HR
23.139.232.0/24     Transit:     42864  GIGANET-HU GigaNet Internet Service Prov
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
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 
41.57.124.0/22       Origin:     37442  UNASSIGNED
41.57.124.0/22      Transit:     37204  TELONE, ZW

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

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:14      /10:39      /11:105     /12:301     
/13:579     /14:1196    /15:2049    /16:13466   /17:8231    /18:14285   
/19:25195   /20:44250   /21:51262   /22:109695  /23:97776   /24:551973  
/25:743     /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        6342        7282  UNI2-AS, ES
  8151        5216       11260  Uninet S.A. de C.V., MX
 39891        3632        4833  ALJAWWALSTC-AS, SA
 11492        3441        4533  CABLEONE, US
  8551        3354        3882  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3334        3525  SHAW, CA
  7155        3042        3975  VIASAT-SP-BACKBONE, US
 22773        2651        3587  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2161        2504  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2064        3509  Telmex Colombia S.A., CO

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

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

   1:1821      2:1302      3:175       4:5         5:4524      6:127    
   7:6         8:1553      9:1        11:172      12:1535     13:388    
  14:2332     15:303      16:184      17:374      18:421      20:256    
  21:4        22:188      23:6227     24:2609     25:6        27:2459   
  29:19       31:2497     32:77       34:11       35:109      36:1942   
  37:4700     38:4558     39:827      40:150      41:3908     42:1247   
  43:2359     44:310      45:16536    46:4286     47:363      49:1757   
  50:1836     51:573      52:1592     54:389      55:765      56:8      
  57:114      58:1779     59:1155     60:988      61:2453     62:2650   
  63:1927     64:5648     65:2330     66:4999     67:3003     68:1353   
  69:4085     70:1235     71:671      72:2990     74:2620     75:1482   
  76:613      77:2452     78:1817     79:3170     80:2120     81:1780   
  82:1500     83:1280     84:1521     85:2959     86:768      87:2021   
  88:1173     89:3689     90:610      91:7756     92:2069     93:2622   
  94:3620     95:4010     96:1311     97:335      98:1153     99:745    
 100:73      101:1073    102:2660    103:31279   104:4655    105:488    
 106:945     107:2523    108:1031    109:4418    110:2104    111:3145   
 112:2037    113:1647    114:1651    115:2019    116:1920    117:2535   
 118:2377    119:2018    120:1824    121:1128    122:2612    123:2218   
 124:1616    125:2497    128:1378    129:1090    130:1018    131:2002   
 132:811     133:422     134:1901    135:304     136:880     137:950    
 138:2556    139:1572    140:1244    141:1457    142:1441    143:1501   
 144:1170    145:347     146:1943    147:1584    148:2569    149:2228   
 150:881     151:1160    152:1814    153:489     154:4469    155:1449   
 156:1779    157:1310    158:1051    159:2316    160:2547    161:1533   
 162:3512    163:1524    164:1620    165:1717    166:1033    167:1724   
 168:3867    169:939     170:4580    171:875     172:3549    173:2934   
 174:1070    175:1178    176:3702    177:4576    178:3593    179:2171   
 180:2571    181:3471    182:3387    183:1979    184:2340    185:20216  
 186:4773    187:3968    188:4118    189:3575    190:9156    191:1433   
 192:10945   193:8870    194:7322    195:5171    196:3099    197:2387   
 198:5957    199:6104    200:8040    201:5868    202:10672   203:10269  
 204:4585    205:3688    206:4322    207:3450    208:4085    209:4864   
 210:4437    211:2497    212:4152    213:3599    214:1088    215:59     
 216:6646    217:2682    218:1299    219:577     220:2021    221:976    
 222:885     223:2180   

End of report



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