[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jun 3 18:02:45 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 04 Jun, 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:                              899129
    Prefixes after maximum aggregation (per Origin AS):          338820
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      433267
Total ASes present in the Internet Routing Table:                 73224
    Prefixes per ASN:                                             12.28
Origin-only ASes present in the Internet Routing Table:           62841
Origin ASes announcing only one prefix:                           25798
Transit ASes present in the Internet Routing Table:               10383
Transit-only ASes present in the Internet Routing Table:            379
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      54
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               892
    Number of instances of unregistered ASNs:                       900
Number of 32-bit ASNs allocated by the RIRs:                      39542
Number of 32-bit ASNs visible in the Routing Table:               32775
Prefixes from 32-bit ASNs in the Routing Table:                  154252
Number of bogon 32-bit ASNs visible in the Routing Table:           244
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            498
Number of addresses announced to Internet:                   3065438848
    Equivalent to 182 /8s, 182 /16s and 226 /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:      305586

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

Prefixes being announced by APNIC Region ASes:                   234867
    Total APNIC prefixes after maximum aggregation:               66756
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          230260
    Unique aggregates announced from the APNIC address blocks:    95039
APNIC Region origin ASes present in the Internet Routing Table:   12687
    APNIC Prefixes per ASN:                                       18.15
APNIC Region origin ASes announcing only one prefix:               3655
APNIC Region transit ASes present in the Internet Routing Table:   1760
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7899
Number of APNIC addresses announced to Internet:              773873664
    Equivalent to 46 /8s, 32 /16s and 96 /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:                    262584
    Total ARIN prefixes after maximum aggregation:               120304
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           262284
    Unique aggregates announced from the ARIN address blocks:    126316
ARIN Region origin ASes present in the Internet Routing Table:    19040
    ARIN Prefixes per ASN:                                        13.78
ARIN Region origin ASes announcing only one prefix:                6901
ARIN Region transit ASes present in the Internet Routing Table:    1931
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:    4513
Number of ARIN addresses announced to Internet:              1293191936
    Equivalent to 77 /8s, 20 /16s and 139 /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:                    258043
    Total RIPE prefixes after maximum aggregation:               117956
    RIPE Deaggregation factor:                                     2.19
Prefixes being announced from the RIPE address blocks:           255612
    Unique aggregates announced from the RIPE address blocks:    151199
RIPE Region origin ASes present in the Internet Routing Table:    28119
    RIPE Prefixes per ASN:                                         9.09
RIPE Region origin ASes announcing only one prefix:               12007
RIPE Region transit ASes present in the Internet Routing Table:    3972
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          40
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10701
Number of RIPE addresses announced to Internet:               714059136
    Equivalent to 42 /8s, 143 /16s and 173 /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:                  114826
    Total LACNIC prefixes after maximum aggregation:              27667
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         114648
    Unique aggregates announced from the LACNIC address blocks:   48653
LACNIC Region origin ASes present in the Internet Routing Table:  10972
    LACNIC Prefixes per ASN:                                      10.45
LACNIC Region origin ASes announcing only one prefix:              2660
LACNIC Region transit ASes present in the Internet Routing Table:  2226
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        54
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8685
Number of LACNIC addresses announced to Internet:             176448768
    Equivalent to 10 /8s, 132 /16s and 101 /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:                  27917
    Total AfriNIC prefixes after maximum aggregation:              5463
    AfriNIC Deaggregation factor:                                  5.11
Prefixes being announced from the AfriNIC address blocks:         35827
    Unique aggregates announced from the AfriNIC address blocks:  11647
AfriNIC Region origin ASes present in the Internet Routing Table:  1649
    AfriNIC Prefixes per ASN:                                     21.73
AfriNIC Region origin ASes announcing only one prefix:              575
AfriNIC Region transit ASes present in the Internet Routing Table:  324
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       34
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  977
Number of AfriNIC addresses announced to Internet:            107578624
    Equivalent to 6 /8s, 105 /16s and 133 /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        9210       8880      38  CHINAMOBILE-CN China Mobile Communicati
  7545        5935        789     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4712       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3560       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3485       1039      53  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3427       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2492      11121     601  KIXS-AS-KR Korea Telecom, KR
  9498        2410        499     236  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2169       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2124        425     214  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        6554      10362    2680  AMAZON-02, US
 11492        4520        300     649  CABLEONE, US
 22773        3913       3070     364  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3901        264      31  VIASAT-SP-BACKBONE, US
 16625        3529       1817    2526  AKAMAI-AS, US
  6327        3442       1319      65  SHAW, CA
   749        2864      50792    2122  DNIC-AS-00749, US
 30036        2621        373     184  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2438       4961     419  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2250       3050     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        6821       1730     150  UNI2-AS, ES
  9121        6744       1692      17  TTNET, TR
  8551        3992        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3983       3360     204  AKAMAI-ASN1, NL
 39891        3833        224      42  ALJAWWALSTC-AS, SA
 12389        2949       2273     907  ROSTELECOM-AS, RU
  6849        2874        355      21  UKRTELNET, UA
  9009        2478        247    1282  M247, GB
 34984        2242        357     631  TELLCOM-AS, TR
 47331        2088        328    1600  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       10642       3398     558  Uninet S.A. de C.V., MX
 10620        3485        519     734  Telmex Colombia S.A., CO
 11830        2438        369      63  Instituto Costarricense de Electricidad
 13999        1804        302     513  Mega Cable, S.A. de C.V., MX
  6503        1444        355     526  Axtel, S.A.B. de C.V., MX
 28573        1383       2334     255  CLARO S.A., BR
  3816        1257        671     148  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1077        369      21  Telefonica del Peru S.A.A., PE
 11664        1027        192     442  Techtel LMDS Comunicaciones Interactiva
 11172         958        133      61  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        1656        393      21  LINKdotNET-AS, EG
 24835        1446        519      32  RAYA-AS, EG
 36992        1314       1519     263  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         960         65      64  ORANGE-COTE-IVOIRE, CI
 36935         777        520      42  Vodafone-, EG
  6713         611       1863      34  IAM-AS, MA
 15399         517         51      37  WANANCHI-, KE
 37342         464         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       10642       3398     558  Uninet S.A. de C.V., MX
  9808        9210       8880      38  CHINAMOBILE-CN China Mobile Communicati
 12479        6821       1730     150  UNI2-AS, ES
  9121        6744       1692      17  TTNET, TR
 16509        6554      10362    2680  AMAZON-02, US
  7545        5935        789     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4712       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4520        300     649  CABLEONE, US
  8551        3992        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3983       3360     204  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        9210         9172  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6744         6727  TTNET, TR
 12479        6821         6671  UNI2-AS, ES
  7545        5935         5241  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4712         4637  ERX-CERNET-BKB China Education and Research Net
  8551        3992         3953  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 16509        6554         3874  AMAZON-02, US
 11492        4520         3871  CABLEONE, US
  7155        3901         3870  VIASAT-SP-BACKBONE, US
 39891        3833         3791  ALJAWWALSTC-AS, SA

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
     17033  UNALLOCATED  8.48.225.0/24             3356  LEVEL3, 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
23.166.208.0/24      Origin:    398906  LUFTCLOUD-ASN-01, US
23.166.208.0/24     Transit:    132132  REPUBLICTELECOM-SG MyRepublic Ltd., SG
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

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      /11:99      /12:301     
/13:590     /14:1208    /15:2054    /16:13523   /17:8287    /18:13865   
/19:25117   /20:44001   /21:52188   /22:108484  /23:96319   /24:532214  
/25:809     /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        5898        6744  TTNET, TR
 12479        5796        6821  UNI2-AS, ES
  8151        4370       10642  Uninet S.A. de C.V., MX
  8551        3458        3992  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3423        4520  CABLEONE, US
  6327        3250        3442  SHAW, CA
 39891        3145        3833  ALJAWWALSTC-AS, SA
  7155        2991        3901  VIASAT-SP-BACKBONE, US
 22773        2914        3913  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2730        2874  UKRTELNET, UA

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

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

   1:1935      2:1023      3:156       4:6         5:3800      6:104    
   7:5         8:1569      9:1        11:173      12:1678     13:320    
  14:2382     15:205      16:42       17:385      18:164      20:213    
  21:4        22:188      23:5664     24:2331     25:6        27:2602   
  29:19       31:2444     32:95       34:4        35:84       36:1772   
  37:4454     38:2947     39:708      40:152      41:3972     42:1118   
  43:2199     44:290      45:15886    46:4154     47:324      49:1689   
  50:2169     51:108      52:1441     54:379      55:757      56:8      
  57:58       58:1756     59:1162     60:959      61:2261     62:2534   
  63:1940     64:5540     65:2336     66:4871     67:2978     68:1193   
  69:4183     70:1332     71:685      72:3059     74:2661     75:1392   
  76:582      77:2187     78:3920     79:3114     80:1993     81:1752   
  82:1498     83:1209     84:1353     85:3676     86:713      87:1973   
  88:2760     89:3317     90:530      91:7605     92:2012     93:2575   
  94:3470     95:4807     96:1311     97:349      98:1001     99:746    
 100:77      101:1044    102:2077    103:29158   104:4419    105:458    
 106:875     107:2530    108:838     109:4255    110:2007    111:3302   
 112:2038    113:1540    114:1482    115:1968    116:1917    117:2504   
 118:2319    119:1831    120:1698    121:1075    122:2544    123:2092   
 124:1590    125:2126    128:1245    129:1087    130:977     131:2052   
 132:772     133:378     134:1907    135:292     136:879     137:858    
 138:2432    139:1510    140:868     141:1422    142:1295    143:1442   
 144:1208    145:351     146:1818    147:1469    148:2212    149:1740   
 150:848     151:1077    152:1852    153:460     154:3547    155:1423   
 156:1810    157:1234    158:1048    159:2206    160:2534    161:1281   
 162:3464    163:1277    164:1634    165:1607    166:727     167:1716   
 168:3797    169:849     170:4466    171:831     172:3204    173:3126   
 174:1022    175:1124    176:3603    177:4613    178:3548    179:2065   
 180:2287    181:2960    182:3249    183:1956    184:2372    185:19531  
 186:4262    187:3801    188:3891    189:3293    190:8871    191:1287   
 192:11013   193:8625    194:7021    195:4946    196:2977    197:2392   
 198:5990    199:6047    200:7578    201:5724    202:10503   203:10026  
 204:4546    205:3430    206:3757    207:3379    208:4020    209:4673   
 210:4338    211:2447    212:4045    213:3404    214:1150    215:67     
 216:6479    217:2665    218:1291    219:573     220:1949    221:969    
 222:823     223:2154   

End of report


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