[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Apr 8 18:03:05 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 09 Apr, 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:                              894824
    Prefixes after maximum aggregation (per Origin AS):          337152
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      429719
Total ASes present in the Internet Routing Table:                 72959
    Prefixes per ASN:                                             12.26
Origin-only ASes present in the Internet Routing Table:           62615
Origin ASes announcing only one prefix:                           25724
Transit ASes present in the Internet Routing Table:               10344
Transit-only ASes present in the Internet Routing Table:            368
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      65
    Max AS path prepend of ASN (267602)                              58
Prefixes from unregistered ASNs in the Routing Table:               818
    Number of instances of unregistered ASNs:                       823
Number of 32-bit ASNs allocated by the RIRs:                      39036
Number of 32-bit ASNs visible in the Routing Table:               32430
Prefixes from 32-bit ASNs in the Routing Table:                  152520
Number of bogon 32-bit ASNs visible in the Routing Table:            25
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            459
Number of addresses announced to Internet:                   3067445760
    Equivalent to 182 /8s, 213 /16s and 130 /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:               99.5
Total number of prefixes smaller than registry allocations:      303742

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

Prefixes being announced by APNIC Region ASes:                   234530
    Total APNIC prefixes after maximum aggregation:               66511
    APNIC Deaggregation factor:                                    3.53
Prefixes being announced from the APNIC address blocks:          229401
    Unique aggregates announced from the APNIC address blocks:    94455
APNIC Region origin ASes present in the Internet Routing Table:   12538
    APNIC Prefixes per ASN:                                       18.30
APNIC Region origin ASes announcing only one prefix:               3557
APNIC Region transit ASes present in the Internet Routing Table:   1724
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7736
Number of APNIC addresses announced to Internet:              774015360
    Equivalent to 46 /8s, 34 /16s and 137 /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:                    260506
    Total ARIN prefixes after maximum aggregation:               119722
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           260466
    Unique aggregates announced from the ARIN address blocks:    124224
ARIN Region origin ASes present in the Internet Routing Table:    18997
    ARIN Prefixes per ASN:                                        13.71
ARIN Region origin ASes announcing only one prefix:                6893
ARIN Region transit ASes present in the Internet Routing Table:    1951
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:    4427
Number of ARIN addresses announced to Internet:              1295152640
    Equivalent to 77 /8s, 50 /16s and 118 /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:                    256731
    Total RIPE prefixes after maximum aggregation:               117238
    RIPE Deaggregation factor:                                     2.19
Prefixes being announced from the RIPE address blocks:           254134
    Unique aggregates announced from the RIPE address blocks:    150682
RIPE Region origin ASes present in the Internet Routing Table:    28118
    RIPE Prefixes per ASN:                                         9.04
RIPE Region origin ASes announcing only one prefix:               12060
RIPE Region transit ASes present in the Internet Routing Table:    3973
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          28
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10674
Number of RIPE addresses announced to Internet:               713988480
    Equivalent to 42 /8s, 142 /16s and 153 /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:                  114514
    Total LACNIC prefixes after maximum aggregation:              27586
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         114425
    Unique aggregates announced from the LACNIC address blocks:   48270
LACNIC Region origin ASes present in the Internet Routing Table:  10948
    LACNIC Prefixes per ASN:                                      10.45
LACNIC Region origin ASes announcing only one prefix:              2649
LACNIC Region transit ASes present in the Internet Routing Table:  2203
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        65
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8639
Number of LACNIC addresses announced to Internet:             176332544
    Equivalent to 10 /8s, 130 /16s and 159 /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:                  27725
    Total AfriNIC prefixes after maximum aggregation:              5450
    AfriNIC Deaggregation factor:                                  5.09
Prefixes being announced from the AfriNIC address blocks:         35939
    Unique aggregates announced from the AfriNIC address blocks:  11688
AfriNIC Region origin ASes present in the Internet Routing Table:  1622
    AfriNIC Prefixes per ASN:                                     22.16
AfriNIC Region origin ASes announcing only one prefix:              565
AfriNIC Region transit ASes present in the Internet Routing Table:  331
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:  954
Number of AfriNIC addresses announced to Internet:            107700224
    Equivalent to 6 /8s, 107 /16s and 96 /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        9157       8884      44  CHINAMOBILE-CN China Mobile Communicati
  7545        5902        789     699  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4715       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3590       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3500       1038      51  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3434       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2497      11121     601  KIXS-AS-KR Korea Telecom, KR
  9498        2392        491     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2161       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2115        429     197  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        6159      10260    2671  AMAZON-02, US
 11492        4463        296     710  CABLEONE, US
 22773        3932       3060     365  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3900        264      31  VIASAT-SP-BACKBONE, US
 16625        3636       1871    2560  AKAMAI-AS, US
  6327        3431       1318      62  SHAW, CA
   749        2882      50780    2138  DNIC-AS-00749, US
 30036        2614        374     124  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2519       4962     423  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2256       3042     495  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        6807       1730     149  UNI2-AS, ES
  9121        6724       1692      17  TTNET, TR
  8551        4003        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3933       3360     201  AKAMAI-ASN1, NL
 39891        3819        220      34  ALJAWWALSTC-AS, SA
 12389        2959       2274     909  ROSTELECOM-AS, RU
  6849        2758        355      21  UKRTELNET, UA
  9009        2474        247    1283  M247, GB
 34984        2221        356     623  TELLCOM-AS, TR
 47331        2085        328    1596  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       10531       3391     558  Uninet S.A. de C.V., MX
 10620        3461        517     764  Telmex Colombia S.A., CO
 11830        2430        369      63  Instituto Costarricense de Electricidad
 13999        1736        294     471  Mega Cable, S.A. de C.V., MX
  6503        1446        354     523  Axtel, S.A.B. de C.V., MX
 28573        1395       2333     253  CLARO S.A., BR
  3816        1255        667     147  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1084        369      21  Telefonica del Peru S.A.A., PE
 11664        1007        192     448  Techtel LMDS Comunicaciones Interactiva
 11172         960        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        1629        393      21  LINKdotNET-AS, EG
 24835        1473        523      33  RAYA-AS, EG
 36992        1314       1519     263  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         902         65      58  ORANGE-COTE-IVOIRE, CI
 36935         771        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         518         51      34  WANANCHI-, KE
 37342         469         32       1  MOVITEL, MZ
 23889         424        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       10531       3391     558  Uninet S.A. de C.V., MX
  9808        9157       8884      44  CHINAMOBILE-CN China Mobile Communicati
 12479        6807       1730     149  UNI2-AS, ES
  9121        6724       1692      17  TTNET, TR
 16509        6159      10260    2671  AMAZON-02, US
  7545        5902        789     699  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4715       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4463        296     710  CABLEONE, US
  8551        4003        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3933       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        9157         9113  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6724         6707  TTNET, TR
 12479        6807         6658  UNI2-AS, ES
  7545        5902         5203  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4715         4640  ERX-CERNET-BKB China Education and Research Net
  8551        4003         3964  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3900         3869  VIASAT-SP-BACKBONE, US
 39891        3819         3785  ALJAWWALSTC-AS, SA
 11492        4463         3753  CABLEONE, US
 20940        3933         3732  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
5.42.192.0/24        Origin:     50340  SELECTEL-MSK, RU
5.42.192.0/24       Transit:     20485  TRANSTELECOM Moscow, Russia, RU
5.42.197.0/24        Origin:     39605  IGUANESOLUTIONS, FR
5.42.197.0/24       Transit:      1299  TWELVE99 Arelion, fka Telia Carrier, SE
5.42.211.0/24        Origin:     49392  ASBAXETN, RU
5.42.211.0/24       Transit:     39238  OKBPROGRESS Moscow, Russia, RU
5.42.212.0/24        Origin:     49392  ASBAXETN, RU
5.42.212.0/24       Transit:     39238  OKBPROGRESS Moscow, Russia, RU
5.42.213.0/24        Origin:     49392  ASBAXETN, RU
5.42.213.0/24       Transit:     39238  OKBPROGRESS Moscow, Russia, RU

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      /10:40      /11:102     /12:307     
/13:588     /14:1205    /15:2054    /16:13531   /17:8255    /18:13880   
/19:25188   /20:43365   /21:52257   /22:108366  /23:95757   /24:529086  
/25:814     /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        5879        6724  TTNET, TR
 12479        5790        6807  UNI2-AS, ES
  8151        4189       10531  Uninet S.A. de C.V., MX
  8551        3476        4003  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3371        4463  CABLEONE, US
  6327        3243        3431  SHAW, CA
 39891        3131        3819  ALJAWWALSTC-AS, SA
  7155        2990        3900  VIASAT-SP-BACKBONE, US
 22773        2932        3932  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2620        2758  UKRTELNET, UA

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

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

   1:1846      2:1037      3:154       4:7         5:3807      6:103    
   7:5         8:1563      9:1        11:172      12:1711     13:282    
  14:2387     15:191      16:44       17:381      18:148      20:194    
  21:4        22:188      23:5596     24:2289     25:4        27:2593   
  29:19       31:2442     32:96       34:1        35:73       36:1757   
  37:4423     38:2739     39:719      40:151      41:3923     42:1000   
  43:2165     44:293      45:16040    46:4136     47:339      49:1677   
  50:1920     51:100      52:1409     53:1        54:363      55:708    
  56:8        57:58       58:1804     59:1202     60:955      61:2269   
  62:2493     63:1950     64:5516     65:2302     66:4834     67:2975   
  68:1178     69:4157     70:1339     71:658      72:3062     74:2666   
  75:1388     76:588      77:2149     78:3904     79:3110     80:1982   
  81:1747     82:1481     83:1199     84:1364     85:3651     86:714    
  87:1961     88:2734     89:3287     90:524      91:7617     92:1989   
  93:2586     94:3456     95:4779     96:1310     97:348      98:988    
  99:739     100:74      101:1031    102:2024    103:28834   104:4368   
 105:466     106:854     107:2511    108:826     109:4221    110:2079   
 111:3297    112:2033    113:1522    114:1485    115:1952    116:1902   
 117:2520    118:2271    119:1866    120:1681    121:1064    122:2560   
 123:2120    124:1594    125:2116    128:1211    129:1220    130:922    
 131:2074    132:767     133:373     134:1930    135:289     136:838    
 137:875     138:2447    139:1493    140:858     141:1411    142:1288   
 143:1487    144:1240    145:342     146:1804    147:1497    148:2218   
 149:1701    150:855     151:1079    152:1834    153:459     154:3526   
 155:1432    156:1852    157:1234    158:1026    159:2081    160:2463   
 161:1325    162:3437    163:1246    164:1635    165:1611    166:703    
 167:1716    168:3751    169:711     170:4434    171:825     172:3108   
 173:3086    174:1017    175:1128    176:3455    177:4622    178:3454   
 179:2012    180:2278    181:2944    182:3243    183:1942    184:2388   
 185:19498   186:4368    187:3642    188:3877    189:3175    190:8907   
 191:1304    192:10990   193:8575    194:6950    195:4970    196:2966   
 197:2405    198:6030    199:6021    200:7495    201:5681    202:10504  
 203:10024   204:4546    205:3382    206:3767    207:3401    208:4048   
 209:4665    210:4263    211:2450    212:4013    213:3425    214:1155   
 215:67      216:6426    217:2660    218:1261    219:569     220:1947   
 221:980     222:844     223:2145   

End of report


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