[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Apr 15 18:02:44 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 16 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:                              896801
    Prefixes after maximum aggregation (per Origin AS):          337333
    Deaggregation factor:                                          2.66
    Unique aggregates announced (without unneeded subnets):      429950
Total ASes present in the Internet Routing Table:                 73005
    Prefixes per ASN:                                             12.28
Origin-only ASes present in the Internet Routing Table:           62657
Origin ASes announcing only one prefix:                           25706
Transit ASes present in the Internet Routing Table:               10348
Transit-only ASes present in the Internet Routing Table:            372
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:              1047
    Number of instances of unregistered ASNs:                      1053
Number of 32-bit ASNs allocated by the RIRs:                      39109
Number of 32-bit ASNs visible in the Routing Table:               32469
Prefixes from 32-bit ASNs in the Routing Table:                  152871
Number of bogon 32-bit ASNs visible in the Routing Table:            28
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            668
Number of addresses announced to Internet:                   3067665792
    Equivalent to 182 /8s, 216 /16s and 221 /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:      303952

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

Prefixes being announced by APNIC Region ASes:                   235767
    Total APNIC prefixes after maximum aggregation:               66532
    APNIC Deaggregation factor:                                    3.54
Prefixes being announced from the APNIC address blocks:          230569
    Unique aggregates announced from the APNIC address blocks:    94543
APNIC Region origin ASes present in the Internet Routing Table:   12548
    APNIC Prefixes per ASN:                                       18.37
APNIC Region origin ASes announcing only one prefix:               3569
APNIC Region transit ASes present in the Internet Routing Table:   1725
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:   7750
Number of APNIC addresses announced to Internet:              774131456
    Equivalent to 46 /8s, 36 /16s and 79 /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:                    260766
    Total ARIN prefixes after maximum aggregation:               119680
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           260793
    Unique aggregates announced from the ARIN address blocks:    124356
ARIN Region origin ASes present in the Internet Routing Table:    18991
    ARIN Prefixes per ASN:                                        13.73
ARIN Region origin ASes announcing only one prefix:                6886
ARIN Region transit ASes present in the Internet Routing Table:    1949
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          37
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4439
Number of ARIN addresses announced to Internet:              1295176960
    Equivalent to 77 /8s, 50 /16s and 213 /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:                    256871
    Total RIPE prefixes after maximum aggregation:               117354
    RIPE Deaggregation factor:                                     2.19
Prefixes being announced from the RIPE address blocks:           254279
    Unique aggregates announced from the RIPE address blocks:    150463
RIPE Region origin ASes present in the Internet Routing Table:    28122
    RIPE Prefixes per ASN:                                         9.04
RIPE Region origin ASes announcing only one prefix:               12044
RIPE Region transit ASes present in the Internet Routing Table:    3978
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:               714141824
    Equivalent to 42 /8s, 144 /16s and 240 /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:                  114644
    Total LACNIC prefixes after maximum aggregation:              27585
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         114546
    Unique aggregates announced from the LACNIC address blocks:   48315
LACNIC Region origin ASes present in the Internet Routing Table:  10952
    LACNIC Prefixes per ASN:                                      10.46
LACNIC Region origin ASes announcing only one prefix:              2641
LACNIC Region transit ASes present in the Internet Routing Table:  2199
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:  8647
Number of LACNIC addresses announced to Internet:             176352512
    Equivalent to 10 /8s, 130 /16s and 237 /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:                  27706
    Total AfriNIC prefixes after maximum aggregation:              5457
    AfriNIC Deaggregation factor:                                  5.08
Prefixes being announced from the AfriNIC address blocks:         35946
    Unique aggregates announced from the AfriNIC address blocks:  11730
AfriNIC Region origin ASes present in the Internet Routing Table:  1627
    AfriNIC Prefixes per ASN:                                     22.09
AfriNIC Region origin ASes announcing only one prefix:              566
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:  959
Number of AfriNIC addresses announced to Internet:            107402240
    Equivalent to 6 /8s, 102 /16s and 212 /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        9229       8884      44  CHINAMOBILE-CN China Mobile Communicati
  7545        5911        789     699  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4722       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3607       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3500       1038      51  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3426       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2497      11121     601  KIXS-AS-KR Korea Telecom, KR
  9498        2395        491     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2165       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        6216      10270    2693  AMAZON-02, US
 11492        4473        297     692  CABLEONE, US
 22773        3937       3076     365  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3900        264      31  VIASAT-SP-BACKBONE, US
 16625        3621       1856    2555  AKAMAI-AS, US
  6327        3431       1318      62  SHAW, CA
   749        2882      50780    2138  DNIC-AS-00749, US
 30036        2616        374     118  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2521       4962     423  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2255       3042     494  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        6823       1730     149  UNI2-AS, ES
  9121        6719       1692      17  TTNET, TR
  8551        4009        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3928       3360     201  AKAMAI-ASN1, NL
 39891        3751        216      33  ALJAWWALSTC-AS, SA
 12389        2954       2274     909  ROSTELECOM-AS, RU
  6849        2762        355      21  UKRTELNET, UA
  9009        2463        245    1275  M247, GB
 34984        2236        357     633  TELLCOM-AS, TR
 47331        2084        328    1595  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       10546       3392     559  Uninet S.A. de C.V., MX
 10620        3466        518     753  Telmex Colombia S.A., CO
 11830        2430        369      63  Instituto Costarricense de Electricidad
 13999        1735        294     473  Mega Cable, S.A. de C.V., MX
  6503        1452        354     523  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        1084        369      21  Telefonica del Peru S.A.A., PE
 11664        1009        193     449  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        1645        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      59  ORANGE-COTE-IVOIRE, CI
 36935         771        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         520         51      35  WANANCHI-, KE
 37342         468         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       10546       3392     559  Uninet S.A. de C.V., MX
  9808        9229       8884      44  CHINAMOBILE-CN China Mobile Communicati
 12479        6823       1730     149  UNI2-AS, ES
  9121        6719       1692      17  TTNET, TR
 16509        6216      10270    2693  AMAZON-02, US
  7545        5911        789     699  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4722       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4473        297     692  CABLEONE, US
  8551        4009        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 22773        3937       3076     365  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        9229         9185  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6719         6702  TTNET, TR
 12479        6823         6674  UNI2-AS, ES
  7545        5911         5212  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4722         4647  ERX-CERNET-BKB China Education and Research Net
  8551        4009         3970  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3900         3869  VIASAT-SP-BACKBONE, US
 11492        4473         3781  CABLEONE, US
 20940        3928         3727  AKAMAI-ASN1, NL
 39891        3751         3718  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
     19397  UNALLOCATED  8.5.244.0/24              3257  GTT-BACKBONE GTT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     19397  UNALLOCATED  8.15.12.0/24              7843  TWC-7843-BB, 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

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      /10:40      /11:100     /12:303     
/13:590     /14:1209    /15:2058    /16:13532   /17:8247    /18:13900   
/19:25181   /20:43713   /21:52350   /22:108483  /23:95912   /24:530324  
/25:830     /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        5874        6719  TTNET, TR
 12479        5801        6823  UNI2-AS, ES
  8151        4204       10546  Uninet S.A. de C.V., MX
  8551        3475        4009  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3379        4473  CABLEONE, US
  6327        3243        3431  SHAW, CA
 39891        3067        3751  ALJAWWALSTC-AS, SA
  7155        2990        3900  VIASAT-SP-BACKBONE, US
 22773        2936        3937  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2624        2762  UKRTELNET, UA

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

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

   1:1941      2:1035      3:154       4:7         5:3800      6:103    
   7:5         8:1561      9:1        11:172      12:1708     13:293    
  14:2388     15:192      16:45       17:381      18:156      20:194    
  21:4        22:188      23:5618     24:2294     25:4        27:2593   
  29:19       31:2423     32:96       34:1        35:74       36:1755   
  37:4414     38:2776     39:731      40:153      41:3944     42:1073   
  43:2183     44:289      45:16088    46:4135     47:337      49:1675   
  50:1934     51:100      52:1410     53:1        54:363      55:708    
  56:8        57:58       58:1804     59:1203     60:957      61:2267   
  62:2487     63:1957     64:5511     65:2303     66:4854     67:2976   
  68:1181     69:4156     70:1339     71:658      72:3051     74:2666   
  75:1388     76:589      77:2168     78:3902     79:3113     80:1984   
  81:1750     82:1483     83:1201     84:1363     85:3649     86:708    
  87:1964     88:2726     89:3267     90:524      91:7621     92:1989   
  93:2595     94:3480     95:4775     96:1298     97:348      98:988    
  99:739     100:74      101:1040    102:2028    103:29058   104:4371   
 105:466     106:857     107:2540    108:830     109:4228    110:2071   
 111:3306    112:2031    113:1530    114:1488    115:1960    116:1909   
 117:2539    118:2328    119:1866    120:1698    121:1066    122:2567   
 123:2125    124:1593    125:2116    128:1222    129:1225    130:967    
 131:2055    132:768     133:373     134:1930    135:289     136:883    
 137:874     138:2441    139:1495    140:858     141:1400    142:1296   
 143:1474    144:1244    145:342     146:1803    147:1498    148:2226   
 149:1667    150:862     151:1083    152:1844    153:458     154:3538   
 155:1440    156:1874    157:1222    158:1033    159:2085    160:2467   
 161:1318    162:3454    163:1250    164:1630    165:1609    166:708    
 167:1712    168:3803    169:708     170:4460    171:830     172:3142   
 173:3093    174:1021    175:1127    176:3516    177:4641    178:3417   
 179:2018    180:2284    181:2951    182:3243    183:1953    184:2385   
 185:19471   186:4376    187:3654    188:3879    189:3189    190:8887   
 191:1321    192:10993   193:8603    194:6961    195:4953    196:2952   
 197:2399    198:6041    199:6040    200:7505    201:5684    202:10498  
 203:10035   204:4566    205:3382    206:3769    207:3410    208:4060   
 209:4674    210:4265    211:2453    212:4018    213:3420    214:1159   
 215:67      216:6446    217:2671    218:1272    219:572     220:1946   
 221:979     222:843     223:2150   

End of report


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