[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Apr 29 18:02:56 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 30 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:                              897578
    Prefixes after maximum aggregation (per Origin AS):          338127
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      430737
Total ASes present in the Internet Routing Table:                 73125
    Prefixes per ASN:                                             12.27
Origin-only ASes present in the Internet Routing Table:           62761
Origin ASes announcing only one prefix:                           25758
Transit ASes present in the Internet Routing Table:               10364
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:               861
    Number of instances of unregistered ASNs:                       868
Number of 32-bit ASNs allocated by the RIRs:                      39243
Number of 32-bit ASNs visible in the Routing Table:               32609
Prefixes from 32-bit ASNs in the Routing Table:                  153716
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:                   3067378816
    Equivalent to 182 /8s, 212 /16s and 124 /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:      304722

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

Prefixes being announced by APNIC Region ASes:                   235465
    Total APNIC prefixes after maximum aggregation:               66756
    APNIC Deaggregation factor:                                    3.53
Prefixes being announced from the APNIC address blocks:          230373
    Unique aggregates announced from the APNIC address blocks:    94714
APNIC Region origin ASes present in the Internet Routing Table:   12615
    APNIC Prefixes per ASN:                                       18.26
APNIC Region origin ASes announcing only one prefix:               3588
APNIC Region transit ASes present in the Internet Routing Table:   1731
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:   7810
Number of APNIC addresses announced to Internet:              774130944
    Equivalent to 46 /8s, 36 /16s and 77 /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:                    261619
    Total ARIN prefixes after maximum aggregation:               119996
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           261657
    Unique aggregates announced from the ARIN address blocks:    124798
ARIN Region origin ASes present in the Internet Routing Table:    19017
    ARIN Prefixes per ASN:                                        13.76
ARIN Region origin ASes announcing only one prefix:                6900
ARIN Region transit ASes present in the Internet Routing Table:    1952
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          38
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4473
Number of ARIN addresses announced to Internet:              1295507200
    Equivalent to 77 /8s, 55 /16s and 223 /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:                    257346
    Total RIPE prefixes after maximum aggregation:               117651
    RIPE Deaggregation factor:                                     2.19
Prefixes being announced from the RIPE address blocks:           254700
    Unique aggregates announced from the RIPE address blocks:    150574
RIPE Region origin ASes present in the Internet Routing Table:    28156
    RIPE Prefixes per ASN:                                         9.05
RIPE Region origin ASes announcing only one prefix:               12055
RIPE Region transit ASes present in the Internet Routing Table:    3985
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:   10711
Number of RIPE addresses announced to Internet:               713908096
    Equivalent to 42 /8s, 141 /16s and 95 /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:                  114809
    Total LACNIC prefixes after maximum aggregation:              27616
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         114672
    Unique aggregates announced from the LACNIC address blocks:   48512
LACNIC Region origin ASes present in the Internet Routing Table:  10960
    LACNIC Prefixes per ASN:                                      10.46
LACNIC Region origin ASes announcing only one prefix:              2648
LACNIC Region transit ASes present in the Internet Routing Table:  2194
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:  8653
Number of LACNIC addresses announced to Internet:             176425984
    Equivalent to 10 /8s, 132 /16s and 12 /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:                  27478
    Total AfriNIC prefixes after maximum aggregation:              5438
    AfriNIC Deaggregation factor:                                  5.05
Prefixes being announced from the AfriNIC address blocks:         35694
    Unique aggregates announced from the AfriNIC address blocks:  11721
AfriNIC Region origin ASes present in the Internet Routing Table:  1632
    AfriNIC Prefixes per ASN:                                     21.87
AfriNIC Region origin ASes announcing only one prefix:              567
AfriNIC Region transit ASes present in the Internet Routing Table:  322
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       34
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  962
Number of AfriNIC addresses announced to Internet:            107134208
    Equivalent to 6 /8s, 98 /16s and 189 /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        9160       8884      44  CHINAMOBILE-CN China Mobile Communicati
  7545        5912        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        3502       1039      53  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3430       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2495      11121     601  KIXS-AS-KR Korea Telecom, KR
  9498        2399        491     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2169       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2118        430     199  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        6267      10276    2707  AMAZON-02, US
 11492        4473        297     696  CABLEONE, US
 22773        3939       3076     363  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3901        264      31  VIASAT-SP-BACKBONE, US
 16625        3592       1835    2538  AKAMAI-AS, US
  6327        3432       1318      62  SHAW, CA
   749        2882      50780    2138  DNIC-AS-00749, US
 30036        2618        373     133  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2520       4962     423  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        6773       1730     150  UNI2-AS, ES
  9121        6726       1692      17  TTNET, TR
  8551        4008        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3937       3360     201  AKAMAI-ASN1, NL
 39891        3819        220      34  ALJAWWALSTC-AS, SA
 12389        2949       2273     909  ROSTELECOM-AS, RU
  6849        2907        355      21  UKRTELNET, UA
  9009        2484        248    1290  M247, GB
 34984        2239        358     633  TELLCOM-AS, TR
 47331        2089        328    1599  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       10615       3389     561  Uninet S.A. de C.V., MX
 10620        3473        519     741  Telmex Colombia S.A., CO
 11830        2424        369      63  Instituto Costarricense de Electricidad
 13999        1765        297     475  Mega Cable, S.A. de C.V., MX
  6503        1453        355     525  Axtel, S.A.B. de C.V., MX
 28573        1397       2333     253  CLARO S.A., BR
  3816        1255        667     147  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1076        369      21  Telefonica del Peru S.A.A., PE
 11664        1021        191     442  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        1654        393      21  LINKdotNET-AS, EG
 24835        1444        515      32  RAYA-AS, EG
 36992        1314       1519     263  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         907         65      59  ORANGE-COTE-IVOIRE, CI
  6713         612       1863      34  IAM-AS, MA
 36935         600        519      39  Vodafone-, EG
 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       10615       3389     561  Uninet S.A. de C.V., MX
  9808        9160       8884      44  CHINAMOBILE-CN China Mobile Communicati
 12479        6773       1730     150  UNI2-AS, ES
  9121        6726       1692      17  TTNET, TR
 16509        6267      10276    2707  AMAZON-02, US
  7545        5912        789     697  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4710       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4473        297     696  CABLEONE, US
  8551        4008        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 22773        3939       3076     363  ASN-CXA-ALL-CCI-22773-RDC, US

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

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

   ASN  No of nets  Net Savings  Description
  9808        9160         9116  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6726         6709  TTNET, TR
 12479        6773         6623  UNI2-AS, ES
  7545        5912         5215  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        4473         3777  CABLEONE, US
 20940        3937         3736  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     /14:1211    /15:2065    /16:13538   /17:8264    /18:13890   
/19:25208   /20:43811   /21:52298   /22:108444  /23:96006   /24:530951  
/25:828     /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        5881        6726  TTNET, TR
 12479        5754        6773  UNI2-AS, ES
  8151        4271       10615  Uninet S.A. de C.V., MX
  8551        3474        4008  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3380        4473  CABLEONE, US
  6327        3244        3432  SHAW, CA
 39891        3131        3819  ALJAWWALSTC-AS, SA
  7155        2991        3901  VIASAT-SP-BACKBONE, US
 22773        2941        3939  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)
----------------------------------------------

   1:1943      2:1037      3:154       4:7         5:3792      6:104    
   7:5         8:1566      9:1        11:172      12:1708     13:298    
  14:2381     15:192      16:45       17:385      18:160      20:191    
  21:4        22:188      23:5652     24:2302     25:6        27:2592   
  29:19       31:2418     32:96       34:1        35:73       36:1755   
  37:4417     38:2825     39:701      40:153      41:3936     42:1085   
  43:2184     44:302      45:16012    46:4129     47:344      49:1694   
  50:2161     51:99       52:1417     54:364      55:735      56:8      
  57:58       58:1809     59:1205     60:958      61:2259     62:2486   
  63:1956     64:5505     65:2320     66:4851     67:2973     68:1192   
  69:4170     70:1342     71:643      72:3049     74:2660     75:1386   
  76:591      77:2186     78:3913     79:3113     80:1978     81:1736   
  82:1498     83:1210     84:1368     85:3658     86:712      87:1962   
  88:2742     89:3298     90:520      91:7623     92:1999     93:2591   
  94:3508     95:4776     96:1309     97:349      98:989      99:737    
 100:75      101:1042    102:2055    103:28977   104:4359    105:462    
 106:859     107:2529    108:838     109:4208    110:2039    111:3294   
 112:2030    113:1548    114:1489    115:1973    116:1901    117:2517   
 118:2331    119:1837    120:1691    121:1073    122:2578    123:2120   
 124:1595    125:2122    128:1235    129:1091    130:967     131:2053   
 132:768     133:372     134:1918    135:289     136:884     137:857    
 138:2442    139:1497    140:861     141:1404    142:1297    143:1457   
 144:1207    145:344     146:1820    147:1478    148:2226    149:1729   
 150:847     151:1079    152:1854    153:458     154:3545    155:1428   
 156:1851    157:1228    158:1040    159:2119    160:2472    161:1281   
 162:3465    163:1261    164:1638    165:1604    166:710     167:1707   
 168:3806    169:835     170:4498    171:834     172:3138    173:3095   
 174:1024    175:1123    176:3527    177:4675    178:3494    179:2010   
 180:2282    181:2973    182:3252    183:1958    184:2388    185:19464  
 186:4329    187:3708    188:3863    189:3224    190:8882    191:1328   
 192:10997   193:8606    194:6989    195:4965    196:2975    197:2406   
 198:6032    199:6044    200:7475    201:5699    202:10490   203:10039  
 204:4545    205:3457    206:3765    207:3394    208:4052    209:4669   
 210:4279    211:2455    212:4046    213:3430    214:1160    215:67     
 216:6452    217:2660    218:1273    219:571     220:1950    221:980    
 222:843     223:2150   

End of report


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