[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Mar 4 18:02:57 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 05 Mar, 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:                              889936
    Prefixes after maximum aggregation (per Origin AS):          335804
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      428204
Total ASes present in the Internet Routing Table:                 72802
    Prefixes per ASN:                                             12.22
Origin-only ASes present in the Internet Routing Table:           62438
Origin ASes announcing only one prefix:                           25692
Transit ASes present in the Internet Routing Table:               10364
Transit-only ASes present in the Internet Routing Table:            381
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      53
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               922
    Number of instances of unregistered ASNs:                       925
Number of 32-bit ASNs allocated by the RIRs:                      38710
Number of 32-bit ASNs visible in the Routing Table:               32223
Prefixes from 32-bit ASNs in the Routing Table:                  150594
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:            505
Number of addresses announced to Internet:                   3067615488
    Equivalent to 182 /8s, 216 /16s and 25 /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:      301039

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

Prefixes being announced by APNIC Region ASes:                   233294
    Total APNIC prefixes after maximum aggregation:               66099
    APNIC Deaggregation factor:                                    3.53
Prefixes being announced from the APNIC address blocks:          228289
    Unique aggregates announced from the APNIC address blocks:    94492
APNIC Region origin ASes present in the Internet Routing Table:   12449
    APNIC Prefixes per ASN:                                       18.34
APNIC Region origin ASes announcing only one prefix:               3551
APNIC Region transit ASes present in the Internet Routing Table:   1720
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         29
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7647
Number of APNIC addresses announced to Internet:              773997952
    Equivalent to 46 /8s, 34 /16s and 69 /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:                    259682
    Total ARIN prefixes after maximum aggregation:               119358
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           259843
    Unique aggregates announced from the ARIN address blocks:    123858
ARIN Region origin ASes present in the Internet Routing Table:    18981
    ARIN Prefixes per ASN:                                        13.69
ARIN Region origin ASes announcing only one prefix:                6893
ARIN Region transit ASes present in the Internet Routing Table:    1966
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:    4386
Number of ARIN addresses announced to Internet:              1295510272
    Equivalent to 77 /8s, 55 /16s and 235 /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:                    254137
    Total RIPE prefixes after maximum aggregation:               116902
    RIPE Deaggregation factor:                                     2.17
Prefixes being announced from the RIPE address blocks:           251262
    Unique aggregates announced from the RIPE address blocks:    149507
RIPE Region origin ASes present in the Internet Routing Table:    28082
    RIPE Prefixes per ASN:                                         8.95
RIPE Region origin ASes announcing only one prefix:               12050
RIPE Region transit ASes present in the Internet Routing Table:    3981
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          31
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10638
Number of RIPE addresses announced to Internet:               713858176
    Equivalent to 42 /8s, 140 /16s and 156 /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:                  114295
    Total LACNIC prefixes after maximum aggregation:              27388
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:         114291
    Unique aggregates announced from the LACNIC address blocks:   48146
LACNIC Region origin ASes present in the Internet Routing Table:  10933
    LACNIC Prefixes per ASN:                                      10.45
LACNIC Region origin ASes announcing only one prefix:              2645
LACNIC Region transit ASes present in the Internet Routing Table:  2220
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        53
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8620
Number of LACNIC addresses announced to Internet:             176044544
    Equivalent to 10 /8s, 126 /16s and 58 /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:                  27606
    Total AfriNIC prefixes after maximum aggregation:              5374
    AfriNIC Deaggregation factor:                                  5.14
Prefixes being announced from the AfriNIC address blocks:         35746
    Unique aggregates announced from the AfriNIC address blocks:  11765
AfriNIC Region origin ASes present in the Internet Routing Table:  1597
    AfriNIC Prefixes per ASN:                                     22.38
AfriNIC Region origin ASes announcing only one prefix:              553
AfriNIC Region transit ASes present in the Internet Routing Table:  315
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:  932
Number of AfriNIC addresses announced to Internet:            107865088
    Equivalent to 6 /8s, 109 /16s and 228 /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        9104       8886      46  CHINAMOBILE-CN China Mobile Communicati
  7545        5875        788     691  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4684       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3607       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3491       1038      51  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3434       1880      57  VNPT-AS-VN VNPT Corp, VN
  4766        2545      11122     623  KIXS-AS-KR Korea Telecom, KR
  9498        2382        475     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2169       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2110        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        6351      10200    2644  AMAZON-02, US
 11492        4446        295     737  CABLEONE, US
 22773        3955       3029     368  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3895        263      26  VIASAT-SP-BACKBONE, US
 16625        3659       1888    2572  AKAMAI-AS, US
  6327        3395       1318      62  SHAW, CA
   749        2885      50780    2141  DNIC-AS-00749, US
 30036        2610        374     156  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2521       4962     428  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2257       3042     499  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        6811       1730     149  UNI2-AS, ES
  9121        6687       1692      17  TTNET, TR
  8551        4015        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3930       3348     213  AKAMAI-ASN1, NL
 39891        3546        204      29  ALJAWWALSTC-AS, SA
 12389        2960       2274     910  ROSTELECOM-AS, RU
  9009        2468        249    1285  M247, GB
 34984        2240        359     611  TELLCOM-AS, TR
 47331        2057        324    1572  TTNET, TR
 58224        1798        931     597  TCI, IR

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       10400       3421     562  Uninet S.A. de C.V., MX
 10620        3476        520     695  Telmex Colombia S.A., CO
 11830        2433        369      62  Instituto Costarricense de Electricidad
 13999        1694        289     475  Mega Cable, S.A. de C.V., MX
  6503        1441        354     524  Axtel, S.A.B. de C.V., MX
 28573        1396       2332     248  CLARO S.A., BR
  3816        1253        664     145  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 26615        1147       2350     139  TIM SA, BR
  6147        1089        369      21  Telefonica del Peru S.A.A., PE
 11664        1004        191     447  Techtel LMDS Comunicaciones Interactiva

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        1591        393      21  LINKdotNET-AS, EG
 24835        1545        523      32  RAYA-AS, EG
 36992        1301       1518     262  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         907         64      62  ORANGE-COTE-IVOIRE, CI
 36935         729        521      40  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         519         51      34  WANANCHI-, KE
 37342         469         32       1  MOVITEL, MZ
 23889         422        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       10400       3421     562  Uninet S.A. de C.V., MX
  9808        9104       8886      46  CHINAMOBILE-CN China Mobile Communicati
 12479        6811       1730     149  UNI2-AS, ES
  9121        6687       1692      17  TTNET, TR
 16509        6351      10200    2644  AMAZON-02, US
  7545        5875        788     691  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4684       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4446        295     737  CABLEONE, US
  8551        4015        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 22773        3955       3029     368  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        9104         9058  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6687         6670  TTNET, TR
 12479        6811         6662  UNI2-AS, ES
  7545        5875         5184  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4684         4610  ERX-CERNET-BKB China Education and Research Net
  8551        4015         3976  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3895         3869  VIASAT-SP-BACKBONE, US
 20940        3930         3717  AKAMAI-ASN1, NL
 11492        4446         3709  CABLEONE, US
 16509        6351         3707  AMAZON-02, US

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
     46990  UNALLOCATED  8.5.242.0/23              3356  LEVEL3, 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
     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
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      /11:102     /12:305     
/13:590     /14:1206    /15:2029    /16:13579   /17:8340    /18:13898   
/19:25176   /20:43176   /21:52412   /22:108351  /23:95511   /24:524399  
/25:793     /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        5843        6687  TTNET, TR
 12479        5788        6811  UNI2-AS, ES
  8151        4061       10400  Uninet S.A. de C.V., MX
  8551        3480        4015  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3359        4446  CABLEONE, US
  6327        3207        3395  SHAW, CA
  7155        2988        3895  VIASAT-SP-BACKBONE, US
 22773        2946        3955  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2874        3546  ALJAWWALSTC-AS, SA
 30036        2265        2610  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1721      2:1062      3:154       4:7         5:3759      6:103    
   7:5         8:1565      9:1        11:172      12:1712     13:412    
  14:2386     15:170      16:43       17:375      18:142      20:167    
  21:4        22:188      23:5510     24:2314     25:6        27:2604   
  29:19       31:2418     32:95       34:1        35:62       36:1752   
  37:3923     38:2601     39:695      40:151      41:3933     42:841    
  43:2104     44:293      45:16028    46:3893     47:348      49:1681   
  50:1909     51:107      52:1366     53:1        54:296      55:737    
  56:8        57:58       58:1775     59:1199     60:964      61:2270   
  62:2452     63:1941     64:5504     65:2301     66:4861     67:2954   
  68:1192     69:4147     70:1353     71:670      72:3076     74:2621   
  75:1517     76:720      77:2101     78:3870     79:3102     80:1959   
  81:1661     82:1454     83:1215     84:1339     85:3640     86:722    
  87:1949     88:2656     89:3242     90:509      91:7529     92:1891   
  93:2593     94:3294     95:4493     96:1309     97:347      98:990    
  99:863     100:75      101:1036    102:1981    103:28454   104:4262   
 105:460     106:851     107:2482    108:788     109:4154    110:2069   
 111:3270    112:2008    113:1495    114:1502    115:1959    116:1905   
 117:2515    118:2252    119:1855    120:1669    121:1059    122:2558   
 123:2120    124:1613    125:2105    128:1190    129:1190    130:922    
 131:2070    132:757     133:372     134:1930    135:289     136:875    
 137:866     138:2454    139:1236    140:888     141:1434    142:1268   
 143:1455    144:1235    145:344     146:1765    147:1494    148:2203   
 149:1704    150:855     151:1080    152:1847    153:457     154:3540   
 155:1427    156:1880    157:1234    158:1020    159:2062    160:2408   
 161:1300    162:3451    163:1220    164:1665    165:1594    166:659    
 167:1711    168:3719    169:688     170:4407    171:822     172:3010   
 173:3073    174:1019    175:1126    176:3504    177:4584    178:3057   
 179:1960    180:2276    181:2918    182:3225    183:1944    184:2387   
 185:19334   186:4313    187:3608    188:3841    189:3079    190:8841   
 191:1301    192:11041   193:8545    194:6949    195:4967    196:2932   
 197:2356    198:6010    199:6018    200:7504    201:5663    202:10453  
 203:9965    204:4556    205:3374    206:3785    207:3388    208:4045   
 209:4650    210:4251    211:2448    212:3987    213:3384    214:1158   
 215:64      216:6437    217:2633    218:1246    219:597     220:1948   
 221:987     222:856     223:2171   

End of report


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