[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri May 6 18:02:48 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 07 May, 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:                              897482
    Prefixes after maximum aggregation (per Origin AS):          337711
    Deaggregation factor:                                          2.66
    Unique aggregates announced (without unneeded subnets):      430691
Total ASes present in the Internet Routing Table:                 73091
    Prefixes per ASN:                                             12.28
Origin-only ASes present in the Internet Routing Table:           62741
Origin ASes announcing only one prefix:                           25750
Transit ASes present in the Internet Routing Table:               10350
Transit-only ASes present in the Internet Routing Table:            367
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      66
    Max AS path prepend of ASN (267602)                              58
Prefixes from unregistered ASNs in the Routing Table:               854
    Number of instances of unregistered ASNs:                       861
Number of 32-bit ASNs allocated by the RIRs:                      39312
Number of 32-bit ASNs visible in the Routing Table:               32591
Prefixes from 32-bit ASNs in the Routing Table:                  153631
Number of bogon 32-bit ASNs visible in the Routing Table:            23
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            482
Number of addresses announced to Internet:                   3067538816
    Equivalent to 182 /8s, 214 /16s and 237 /24s
    Percentage of available address space announced:               82.9
    Percentage of allocated address space announced:               82.9
    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:      304613

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

Prefixes being announced by APNIC Region ASes:                   235349
    Total APNIC prefixes after maximum aggregation:               66645
    APNIC Deaggregation factor:                                    3.53
Prefixes being announced from the APNIC address blocks:          230358
    Unique aggregates announced from the APNIC address blocks:    94786
APNIC Region origin ASes present in the Internet Routing Table:   12607
    APNIC Prefixes per ASN:                                       18.27
APNIC Region origin ASes announcing only one prefix:               3589
APNIC Region transit ASes present in the Internet Routing Table:   1729
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         32
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7806
Number of APNIC addresses announced to Internet:              774069504
    Equivalent to 46 /8s, 35 /16s and 93 /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:                    261514
    Total ARIN prefixes after maximum aggregation:               119897
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           261402
    Unique aggregates announced from the ARIN address blocks:    124878
ARIN Region origin ASes present in the Internet Routing Table:    19015
    ARIN Prefixes per ASN:                                        13.75
ARIN Region origin ASes announcing only one prefix:                6898
ARIN Region transit ASes present in the Internet Routing Table:    1942
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:    4476
Number of ARIN addresses announced to Internet:              1295461632
    Equivalent to 77 /8s, 55 /16s and 45 /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:                    257121
    Total RIPE prefixes after maximum aggregation:               117453
    RIPE Deaggregation factor:                                     2.19
Prefixes being announced from the RIPE address blocks:           254519
    Unique aggregates announced from the RIPE address blocks:    150317
RIPE Region origin ASes present in the Internet Routing Table:    28130
    RIPE Prefixes per ASN:                                         9.05
RIPE Region origin ASes announcing only one prefix:               12047
RIPE Region transit ASes present in the Internet Routing Table:    3975
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          33
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10688
Number of RIPE addresses announced to Internet:               713885056
    Equivalent to 42 /8s, 141 /16s and 5 /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:                  114893
    Total LACNIC prefixes after maximum aggregation:              27612
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         114718
    Unique aggregates announced from the LACNIC address blocks:   48579
LACNIC Region origin ASes present in the Internet Routing Table:  10968
    LACNIC Prefixes per ASN:                                      10.46
LACNIC Region origin ASes announcing only one prefix:              2654
LACNIC Region transit ASes present in the Internet Routing Table:  2201
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        66
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8662
Number of LACNIC addresses announced to Internet:             176484096
    Equivalent to 10 /8s, 132 /16s and 239 /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:                  27751
    Total AfriNIC prefixes after maximum aggregation:              5437
    AfriNIC Deaggregation factor:                                  5.10
Prefixes being announced from the AfriNIC address blocks:         36003
    Unique aggregates announced from the AfriNIC address blocks:  11713
AfriNIC Region origin ASes present in the Internet Routing Table:  1630
    AfriNIC Prefixes per ASN:                                     22.09
AfriNIC Region origin ASes announcing only one prefix:              562
AfriNIC Region transit ASes present in the Internet Routing Table:  326
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       36
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  959
Number of AfriNIC addresses announced to Internet:            107366400
    Equivalent to 6 /8s, 102 /16s and 72 /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        9141       8884      44  CHINAMOBILE-CN China Mobile Communicati
  7545        5922        789     697  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4710       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3592       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3494       1039      53  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3431       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2495      11121     601  KIXS-AS-KR Korea Telecom, KR
  9498        2403        499     239  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2169       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2119        438     201  TATACOMM-AS TATA Communications formerl

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        6340      10279    2727  AMAZON-02, US
 11492        4476        297     694  CABLEONE, US
 22773        3934       3075     361  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3901        264      31  VIASAT-SP-BACKBONE, US
 16625        3596       1837    2540  AKAMAI-AS, US
  6327        3437       1318      62  SHAW, CA
   749        2882      50780    2138  DNIC-AS-00749, US
 30036        2623        374     130  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2515       4962     424  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2251       3051     492  CHARTER-20115, 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        6767       1730     150  UNI2-AS, ES
  9121        6715       1692      17  TTNET, TR
  8551        4008        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3939       3360     201  AKAMAI-ASN1, NL
 39891        3819        220      34  ALJAWWALSTC-AS, SA
 12389        2948       2273     909  ROSTELECOM-AS, RU
  6849        2907        355      21  UKRTELNET, UA
  9009        2493        249    1296  M247, GB
 34984        2239        358     633  TELLCOM-AS, TR
 47331        2086        328    1598  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       10580       3394     561  Uninet S.A. de C.V., MX
 10620        3475        519     738  Telmex Colombia S.A., CO
 11830        2433        369      63  Instituto Costarricense de Electricidad
 13999        1782        298     469  Mega Cable, S.A. de C.V., MX
  6503        1456        355     525  Axtel, S.A.B. de C.V., MX
 28573        1401       2333     253  CLARO S.A., BR
  3816        1256        669     148  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1080        369      21  Telefonica del Peru S.A.A., PE
 11664        1014        191     443  Techtel LMDS Comunicaciones Interactiva
 11172         961        133      63  Alestra, S. de R.L. de C.V., MX

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        1653        393      21  LINKdotNET-AS, EG
 24835        1442        501      30  RAYA-AS, EG
 36992        1314       1519     263  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         928         65      59  ORANGE-COTE-IVOIRE, CI
 36935         619        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         512         51      33  WANANCHI-, KE
 37342         467         32       1  MOVITEL, MZ
 23889         423        232      16  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       10580       3394     561  Uninet S.A. de C.V., MX
  9808        9141       8884      44  CHINAMOBILE-CN China Mobile Communicati
 12479        6767       1730     150  UNI2-AS, ES
  9121        6715       1692      17  TTNET, TR
 16509        6340      10279    2727  AMAZON-02, US
  7545        5922        789     697  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4710       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4476        297     694  CABLEONE, US
  8551        4008        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3939       3360     201  AKAMAI-ASN1, NL

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

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

   ASN  No of nets  Net Savings  Description
  9808        9141         9097  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6715         6698  TTNET, TR
 12479        6767         6617  UNI2-AS, ES
  7545        5922         5225  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4710         4635  ERX-CERNET-BKB China Education and Research Net
  8551        4008         3969  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3901         3870  VIASAT-SP-BACKBONE, US
 39891        3819         3785  ALJAWWALSTC-AS, SA
 11492        4476         3782  CABLEONE, US
 20940        3939         3738  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
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
     18604  UNALLOCATED  8.25.204.0/24             3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
    395056  UNALLOCATED  8.45.133.0/24             3356  LEVEL3, US
     32306  UNALLOCATED  8.46.80.0/24             33652  CMCS, 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
23.141.0.0/24        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
41.57.124.0/23       Origin:     37442  UNASSIGNED
41.57.124.0/23      Transit:     37204  TELONE, ZW
41.57.124.0/24       Origin:     37442  UNASSIGNED
41.57.124.0/24      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       /9:13      /10:41      /11:100     /12:303     
/13:591     /14:1212    /15:2065    /16:13550   /17:8313    /18:13908   
/19:25196   /20:43781   /21:52215   /22:108367  /23:95963   /24:531046  
/25:802     /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
  9121        5871        6715  TTNET, TR
 12479        5748        6767  UNI2-AS, ES
  8151        4296       10580  Uninet S.A. de C.V., MX
  8551        3474        4008  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3382        4476  CABLEONE, US
  6327        3249        3437  SHAW, CA
 39891        3131        3819  ALJAWWALSTC-AS, SA
  7155        2991        3901  VIASAT-SP-BACKBONE, US
 22773        2936        3934  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2758        2907  UKRTELNET, UA

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

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

   1:1941      2:1033      3:154       4:6         5:3786      6:103    
   7:5         8:1566      9:1        11:172      12:1708     13:298    
  14:2386     15:198      16:45       17:385      18:158      20:205    
  21:4        22:188      23:5645     24:2286     25:6        27:2594   
  29:19       31:2421     32:96       34:1        35:73       36:1756   
  37:4416     38:2796     39:700      40:153      41:3973     42:1089   
  43:2197     44:292      45:16037    46:4137     47:321      49:1702   
  50:2159     51:100      52:1419     54:365      55:736      56:8      
  57:59       58:1808     59:1204     60:959      61:2254     62:2508   
  63:1953     64:5514     65:2320     66:4851     67:2975     68:1190   
  69:4156     70:1336     71:673      72:3051     74:2647     75:1390   
  76:585      77:2179     78:3913     79:3108     80:1988     81:1740   
  82:1494     83:1208     84:1366     85:3659     86:712      87:1959   
  88:2736     89:3295     90:517      91:7612     92:1996     93:2580   
  94:3498     95:4769     96:1306     97:349      98:993      99:736    
 100:75      101:1043    102:2069    103:29069   104:4375    105:462    
 106:875     107:2540    108:832     109:4205    110:2035    111:3277   
 112:2029    113:1548    114:1489    115:1975    116:1905    117:2509   
 118:2329    119:1840    120:1692    121:1073    122:2580    123:2116   
 124:1588    125:2125    128:1234    129:1104    130:968     131:2051   
 132:771     133:372     134:1903    135:289     136:882     137:846    
 138:2451    139:1502    140:854     141:1400    142:1291    143:1448   
 144:1210    145:343     146:1811    147:1488    148:2224    149:1729   
 150:844     151:1081    152:1850    153:459     154:3556    155:1417   
 156:1877    157:1227    158:1042    159:2151    160:2489    161:1267   
 162:3459    163:1261    164:1638    165:1596    166:710     167:1703   
 168:3808    169:840     170:4502    171:831     172:3137    173:3099   
 174:1023    175:1127    176:3519    177:4656    178:3497    179:2016   
 180:2283    181:2996    182:3253    183:1954    184:2385    185:19433  
 186:4328    187:3724    188:3866    189:3238    190:8870    191:1323   
 192:11005   193:8606    194:6996    195:4965    196:2986    197:2419   
 198:6002    199:6041    200:7492    201:5721    202:10485   203:10037  
 204:4557    205:3448    206:3772    207:3392    208:4038    209:4663   
 210:4280    211:2456    212:4036    213:3419    214:1153    215:67     
 216:6443    217:2664    218:1269    219:571     220:1946    221:979    
 222:843     223:2149   

End of report


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