[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jul 15 18:02:37 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 Jul, 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:                              903985
    Prefixes after maximum aggregation (per Origin AS):          340529
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      436712
Total ASes present in the Internet Routing Table:                 73410
    Prefixes per ASN:                                             12.31
Origin-only ASes present in the Internet Routing Table:           62998
Origin ASes announcing only one prefix:                           25897
Transit ASes present in the Internet Routing Table:               10412
Transit-only ASes present in the Internet Routing Table:            394
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      61
    Max AS path prepend of ASN ( 37447)                              57
Prefixes from unregistered ASNs in the Routing Table:               997
    Number of instances of unregistered ASNs:                      1003
Number of 32-bit ASNs allocated by the RIRs:                      39806
Number of 32-bit ASNs visible in the Routing Table:               33002
Prefixes from 32-bit ASNs in the Routing Table:                  157135
Number of bogon 32-bit ASNs visible in the Routing Table:            34
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            508
Number of addresses announced to Internet:                   3068125568
    Equivalent to 182 /8s, 223 /16s and 225 /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:      307132

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

Prefixes being announced by APNIC Region ASes:                   235779
    Total APNIC prefixes after maximum aggregation:               67031
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          230860
    Unique aggregates announced from the APNIC address blocks:    95675
APNIC Region origin ASes present in the Internet Routing Table:   12788
    APNIC Prefixes per ASN:                                       18.05
APNIC Region origin ASes announcing only one prefix:               3699
APNIC Region transit ASes present in the Internet Routing Table:   1752
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         25
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8008
Number of APNIC addresses announced to Internet:              773002240
    Equivalent to 46 /8s, 19 /16s and 20 /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:                    263982
    Total ARIN prefixes after maximum aggregation:               120677
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           264214
    Unique aggregates announced from the ARIN address blocks:    127163
ARIN Region origin ASes present in the Internet Routing Table:    19038
    ARIN Prefixes per ASN:                                        13.88
ARIN Region origin ASes announcing only one prefix:                6909
ARIN Region transit ASes present in the Internet Routing Table:    1940
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:    4561
Number of ARIN addresses announced to Internet:              1295999744
    Equivalent to 77 /8s, 63 /16s and 99 /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:                    259414
    Total RIPE prefixes after maximum aggregation:               118881
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           256855
    Unique aggregates announced from the RIPE address blocks:    152879
RIPE Region origin ASes present in the Internet Routing Table:    28175
    RIPE Prefixes per ASN:                                         9.12
RIPE Region origin ASes announcing only one prefix:               12070
RIPE Region transit ASes present in the Internet Routing Table:    3990
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          35
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10754
Number of RIPE addresses announced to Internet:               714611072
    Equivalent to 42 /8s, 152 /16s and 25 /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:                  115804
    Total LACNIC prefixes after maximum aggregation:              27680
    LACNIC Deaggregation factor:                                   4.18
Prefixes being announced from the LACNIC address blocks:         115574
    Unique aggregates announced from the LACNIC address blocks:   48743
LACNIC Region origin ASes present in the Internet Routing Table:  10963
    LACNIC Prefixes per ASN:                                      10.54
LACNIC Region origin ASes announcing only one prefix:              2642
LACNIC Region transit ASes present in the Internet Routing Table:  2242
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8695
Number of LACNIC addresses announced to Internet:             176568064
    Equivalent to 10 /8s, 134 /16s and 55 /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:                  28009
    Total AfriNIC prefixes after maximum aggregation:              5512
    AfriNIC Deaggregation factor:                                  5.08
Prefixes being announced from the AfriNIC address blocks:         35974
    Unique aggregates announced from the AfriNIC address blocks:  11826
AfriNIC Region origin ASes present in the Internet Routing Table:  1657
    AfriNIC Prefixes per ASN:                                     21.71
AfriNIC Region origin ASes announcing only one prefix:              577
AfriNIC Region transit ASes present in the Internet Routing Table:  323
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       61
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  984
Number of AfriNIC addresses announced to Internet:            107651072
    Equivalent to 6 /8s, 106 /16s and 160 /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        9016       8883      49  CHINAMOBILE-CN China Mobile Communicati
  7545        5921        786     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4703       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3571       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3510       1042      59  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3426       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2491      11124     596  KIXS-AS-KR Korea Telecom, KR
  9498        2428        499     239  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2174       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2126        425     216  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        6774      10392    2666  AMAZON-02, US
 11492        4510        299     668  CABLEONE, US
  7155        3903        265      32  VIASAT-SP-BACKBONE, US
 22773        3846       3069     350  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3474       1789    2512  AKAMAI-AS, US
  6327        3437       1319      63  SHAW, CA
   749        2996      50735    2254  DNIC-AS-00749, US
 30036        2628        374     157  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2512       3359     359  GOOGLE-CLOUD-PLATFORM, US
   209        2381       4936     411  CENTURYLINK-US-LEGACY-QWEST, 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        6883       1730     144  UNI2-AS, ES
  9121        6694       1692      17  TTNET, TR
  8551        4008        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        4008       3361     206  AKAMAI-ASN1, NL
 39891        4005        234      45  ALJAWWALSTC-AS, SA
 12389        2936       2288     910  ROSTELECOM-AS, RU
  6849        2754        355      21  UKRTELNET, UA
  9009        2574        254    1336  M247, GB
 34984        2250        358     638  TELLCOM-AS, TR
 47331        2063        325    1580  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       10771       3395     557  Uninet S.A. de C.V., MX
 10620        3476        514     778  Telmex Colombia S.A., CO
 11830        2424        369      64  Instituto Costarricense de Electricidad
 13999        1929        318     506  Mega Cable, S.A. de C.V., MX
 28573        1364       2331     269  Claro NXT Telecomunicacoes Ltda, BR
  6503        1290        338     520  Axtel, S.A.B. de C.V., MX
  3816        1265        689     152  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1078        369      21  Telefonica del Peru S.A.A., PE
 11664         997        179     460  Techtel LMDS Comunicaciones Interactiva
 26615         978       2466      43  TIM SA, BR

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        1610        393      21  LINKdotNET-AS, EG
 24835        1546        521      31  RAYA-AS, EG
 36992        1317       1519     271  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         970         66      47  ORANGE-COTE-IVOIRE, CI
 36935         789        520      42  Vodafone-, EG
  6713         610       1863      34  IAM-AS, MA
 15399         516         52      37  WANANCHI-, KE
 37342         462         32       1  MOVITEL, MZ
 23889         401        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       10771       3395     557  Uninet S.A. de C.V., MX
  9808        9016       8883      49  CHINAMOBILE-CN China Mobile Communicati
 12479        6883       1730     144  UNI2-AS, ES
 16509        6774      10392    2666  AMAZON-02, US
  9121        6694       1692      17  TTNET, TR
  7545        5921        786     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4703       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4510        299     668  CABLEONE, US
  8551        4008        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        4008       3361     206  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        9016         8967  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6883         6739  UNI2-AS, ES
  9121        6694         6677  TTNET, TR
  7545        5921         5227  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4703         4628  ERX-CERNET-BKB China Education and Research Net
 16509        6774         4108  AMAZON-02, US
  8551        4008         3969  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 39891        4005         3960  ALJAWWALSTC-AS, SA
  7155        3903         3871  VIASAT-SP-BACKBONE, US
 11492        4510         3842  CABLEONE, 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
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, 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
     18798  UNALLOCATED  8.40.106.0/24             6461  ZAYO-6461, US
    394856  UNALLOCATED  8.40.216.0/24             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     /12:302     
/13:591     /14:1208    /15:2062    /16:13539   /17:8322    /18:13912   
/19:25097   /20:44395   /21:52203   /22:108928  /23:96832   /24:535619  
/25:806     /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
 12479        5864        6883  UNI2-AS, ES
  9121        5849        6694  TTNET, TR
  8151        4506       10771  Uninet S.A. de C.V., MX
  8551        3471        4008  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3416        4510  CABLEONE, US
  6327        3247        3437  SHAW, CA
 39891        3189        4005  ALJAWWALSTC-AS, SA
  7155        2992        3903  VIASAT-SP-BACKBONE, US
 22773        2862        3846  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2612        2754  UKRTELNET, UA

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

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

   1:1935      2:1034      3:157       4:5         5:3834      6:110    
   7:6         8:1564      9:1        11:173      12:1645     13:345    
  14:2347     15:233      16:44       17:388      18:179      20:242    
  21:4        22:188      23:5800     24:2390     25:6        27:2611   
  29:19       31:2434     32:95       34:7        35:87       36:1814   
  37:4442     38:3274     39:714      40:152      41:3905     42:1121   
  43:2217     44:291      45:16020    46:4110     47:327      49:1706   
  50:1950     51:237      52:1453     54:386      55:841      56:8      
  57:59       58:1790     59:1162     60:961      61:2274     62:2527   
  63:1933     64:5610     65:2340     66:4894     67:2967     68:1181   
  69:4183     70:1317     71:682      72:3031     74:2638     75:1395   
  76:581      77:2226     78:3930     79:3129     80:1993     81:1770   
  82:1496     83:1213     84:1333     85:3712     86:727      87:1900   
  88:2792     89:3358     90:541      91:7605     92:2029     93:2551   
  94:3498     95:4765     96:1328     97:352      98:1014     99:752    
 100:76      101:1038    102:2145    103:29453   104:4534    105:468    
 106:876     107:2547    108:865     109:4318    110:1990    111:3321   
 112:2037    113:1533    114:1481    115:2000    116:1918    117:2428   
 118:2307    119:1825    120:1700    121:1079    122:2554    123:2089   
 124:1598    125:2112    128:1235    129:1058    130:984     131:2038   
 132:785     133:377     134:1943    135:304     136:892     137:861    
 138:2472    139:1521    140:933     141:1447    142:1307    143:1434   
 144:1213    145:354     146:1819    147:1532    148:2210    149:1740   
 150:901     151:1066    152:1853    153:465     154:3668    155:1442   
 156:1679    157:1266    158:1038    159:2231    160:2499    161:1258   
 162:3476    163:1294    164:1644    165:1625    166:778     167:1715   
 168:3828    169:881     170:4558    171:837     172:3290    173:3147   
 174:1022    175:1142    176:3598    177:4718    178:3544    179:2163   
 180:2328    181:3235    182:3260    183:1943    184:2346    185:19630  
 186:4364    187:3821    188:3983    189:3400    190:8943    191:1438   
 192:10969   193:8660    194:7056    195:5004    196:2949    197:2419   
 198:5990    199:6037    200:7557    201:5848    202:10509   203:10049  
 204:4527    205:3432    206:3758    207:3391    208:4018    209:4692   
 210:4377    211:2419    212:4063    213:3441    214:1145    215:67     
 216:6493    217:2637    218:1288    219:573     220:2005    221:965    
 222:829     223:1994   

End of report


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