[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jul 28 18:02:10 UTC 2023


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 29 Jul, 2023

  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:                              927608
    Prefixes after maximum aggregation (per Origin AS):          351673
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      452476
Total ASes present in the Internet Routing Table:                 74625
    Prefixes per ASN:                                             12.43
Origin-only ASes present in the Internet Routing Table:           64078
Origin ASes announcing only one prefix:                           26312
Transit ASes present in the Internet Routing Table:               10547
Transit-only ASes present in the Internet Routing Table:            456
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      68
    Max AS path prepend of ASN (263725)                              64
Prefixes from unregistered ASNs in the Routing Table:              1101
    Number of instances of unregistered ASNs:                      1103
Number of 32-bit ASNs allocated by the RIRs:                      42345
Number of 32-bit ASNs visible in the Routing Table:               34877
Prefixes from 32-bit ASNs in the Routing Table:                  174104
Number of bogon 32-bit ASNs visible in the Routing Table:            33
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            607
Number of addresses announced to Internet:                   3053785344
    Equivalent to 182 /8s, 5 /16s and 17 /24s
    Percentage of available address space announced:               82.5
    Percentage of allocated address space announced:               82.5
    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:      309027

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

Prefixes being announced by APNIC Region ASes:                   246183
    Total APNIC prefixes after maximum aggregation:               70163
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          239982
    Unique aggregates announced from the APNIC address blocks:    98829
APNIC Region origin ASes present in the Internet Routing Table:   13551
    APNIC Prefixes per ASN:                                       17.71
APNIC Region origin ASes announcing only one prefix:               4014
APNIC Region transit ASes present in the Internet Routing Table:   1790
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         28
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8869
Number of APNIC addresses announced to Internet:              773427072
    Equivalent to 46 /8s, 25 /16s and 143 /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, 131072-153913
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:                    271963
    Total ARIN prefixes after maximum aggregation:               123672
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           274070
    Unique aggregates announced from the ARIN address blocks:    130874
ARIN Region origin ASes present in the Internet Routing Table:    19093
    ARIN Prefixes per ASN:                                        14.35
ARIN Region origin ASes announcing only one prefix:                6958
ARIN Region transit ASes present in the Internet Routing Table:    1954
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4817
Number of ARIN addresses announced to Internet:              1277267200
    Equivalent to 76 /8s, 33 /16s and 141 /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:                    260230
    Total RIPE prefixes after maximum aggregation:               122637
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           256976
    Unique aggregates announced from the RIPE address blocks:    159847
RIPE Region origin ASes present in the Internet Routing Table:    28354
    RIPE Prefixes per ASN:                                         9.06
RIPE Region origin ASes announcing only one prefix:               12041
RIPE Region transit ASes present in the Internet Routing Table:    3942
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          33
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11264
Number of RIPE addresses announced to Internet:               716774016
    Equivalent to 42 /8s, 185 /16s and 26 /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:                  118452
    Total LACNIC prefixes after maximum aggregation:              28544
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         117598
    Unique aggregates announced from the LACNIC address blocks:   49709
LACNIC Region origin ASes present in the Internet Routing Table:  11000
    LACNIC Prefixes per ASN:                                      10.69
LACNIC Region origin ASes announcing only one prefix:              2682
LACNIC Region transit ASes present in the Internet Routing Table:  2322
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        68
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8812
Number of LACNIC addresses announced to Internet:             178572288
    Equivalent to 10 /8s, 164 /16s and 204 /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:                  29679
    Total AfriNIC prefixes after maximum aggregation:              5920
    AfriNIC Deaggregation factor:                                  5.01
Prefixes being announced from the AfriNIC address blocks:         38375
    Unique aggregates announced from the AfriNIC address blocks:  12721
AfriNIC Region origin ASes present in the Internet Routing Table:  1768
    AfriNIC Prefixes per ASN:                                     21.71
AfriNIC Region origin ASes announcing only one prefix:              617
AfriNIC Region transit ASes present in the Internet Routing Table:  333
Average AfriNIC Region AS path length visible:                      4.8
    Max AfriNIC Region AS path length visible:                       40
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1115
Number of AfriNIC addresses announced to Internet:            107383808
    Equivalent to 6 /8s, 102 /16s and 140 /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        9526       8706      40  CHINAMOBILE-CN China Mobile Communicati
  7545        5682        784     689  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4853       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4250        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3588       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3370       1856      95  VNPT-AS-VN VNPT Corp, VN
  7552        3362       1331      21  VIETEL-AS-AP Viettel Group, VN
  9498        3050        498     247  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2549      11270     588  KIXS-AS-KR Korea Telecom, KR
 24560        2457        833     454  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd

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        8806      10937    3168  AMAZON-02, US
 11492        4525        300     620  CABLEONE, US
  7155        4194        288     101  VIASAT-SP-BACKBONE, US
 22773        3541       3053     268  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3525       1319      66  SHAW, CA
 16625        3144       1557    2354  AKAMAI-AS, US
   749        3139      54962    2391  DNIC-AS-00749, US
   367        2968       3840    1404  DNIC-ASBLK-00306-00371, US
396982        2678       3595     384  GOOGLE-CLOUD-PLATFORM, US
 30036        2514        361     351  MEDIACOM-ENTERPRISE-BUSINESS, 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        7310       1706     141  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4074       3398     158  AKAMAI-ASN1, NL
  8551        3454        368      33  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2973       2294     914  ROSTELECOM-AS, RU
  9009        2670        247    1394  M247, RO
 34984        2317        362     605  TELLCOM-AS, TR
 58224        1816        944     535  TCI, IR
  6849        1765        307      17  UKRTELNET, UA
 13188        1606        100      27  TRIOLAN, UA

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       11617       3387     596  UNINET, MX
 10620        3533        507     832  Telmex Colombia S.A., CO
 13999        2419        362     635  Mega Cable, S.A. de C.V., MX
 11830        1996        369      64  Instituto Costarricense de Electricidad
 28573        1317       2322     238  Claro NXT Telecomunicacoes Ltda, BR
  3816        1301        767     167  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1299        344     510  Axtel, S.A.B. de C.V., MX
  6147        1123        370      22  Telefonica del Peru S.A.A., PE
 11664        1112        181     436  Techtel LMDS Comunicaciones Interactiva
 26615        1036       2500      48  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        1587        393      19  LINKdotNET-AS, EG
 24835        1517        533      27  RAYA-AS, EG
 36992        1355       1518     282  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1049         67      45  ORANGE-COTE-IVOIRE, CI
 36935         922        521      43  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 37342         507         32       1  MOVITEL, MZ
 24757         479         73       5  EthioNet-AS, ET
 15399         457         54      50  WANANCHI-, KE

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       11617       3387     596  UNINET, MX
  9808        9526       8706      40  CHINAMOBILE-CN China Mobile Communicati
 16509        8806      10937    3168  AMAZON-02, US
 12479        7310       1706     141  UNI2-AS, ES
  7545        5682        784     689  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897        290      61  ALJAWWALSTC-AS, SA
  4538        4853       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4525        300     620  CABLEONE, US
 18403        4250        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4194        288     101  VIASAT-SP-BACKBONE, 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        9526         9486  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7310         7169  UNI2-AS, ES
 16509        8806         5638  AMAZON-02, US
  7545        5682         4993  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897         4836  ALJAWWALSTC-AS, SA
  4538        4853         4778  ERX-CERNET-BKB China Education and Research Net
 18403        4250         4225  FPT-AS-AP FPT Telecom Company, VN
  7155        4194         4093  VIASAT-SP-BACKBONE, US
 20940        4074         3916  AKAMAI-ASN1, NL
 11492        4525         3905  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
     33492  UNALLOCATED  8.6.184.0/23             33650  COMCAST-33650, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     19695  UNALLOCATED  8.20.161.0/24             7015  COMCAST-7015, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
    396894  UNALLOCATED  8.28.201.0/24            46887  LIGHTOWER, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, 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
23.140.216.0/24      Origin:     27176  DATAWAGON, US
23.140.216.0/24     Transit:     20278  NEXEON, US
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.176.160.0/24      Origin:    397327  UNASSIGNED
23.176.160.0/24     Transit:     19108  SUDDENLINK-COMMUNICATIONS, 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

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       /9:14      /10:39      /11:102     /12:297     
/13:579     /14:1198    /15:2071    /16:13473   /17:8279    /18:13876   
/19:25203   /20:44422   /21:51527   /22:110199  /23:98821   /24:556744  
/25:748     /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        6400        7310  UNI2-AS, ES
  8151        5586       11617  UNINET, MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3434        4525  CABLEONE, US
  6327        3335        3525  SHAW, CA
  7155        3139        4194  VIASAT-SP-BACKBONE, US
  8551        2923        3454  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2607        3541  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2169        2514  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2092        3533  Telmex Colombia S.A., CO

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

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

   1:2218      2:1347      3:245       4:5         5:4487      6:131    
   7:6         8:1553      9:1        11:172      12:1523     13:374    
  14:2308     15:302      16:198      17:373      18:540      20:271    
  21:4        22:188      23:6371     24:2477     25:4        27:2504   
  29:19       31:2533     32:81       34:25       35:114      36:1945   
  37:4693     38:5087     39:832      40:152      41:3887     42:2033   
  43:2328     44:305      45:16659    46:4339     47:381      49:1789   
  50:1862     51:584      52:1592     54:390      55:979      56:8      
  57:120      58:1892     59:1170     60:989      61:2487     62:2673   
  63:1926     64:5571     65:2291     66:4951     67:3050     68:1326   
  69:4090     70:1208     71:679      72:2977     74:2637     75:1579   
  76:620      77:2448     78:1833     79:2952     80:2114     81:1805   
  82:1493     83:1269     84:1542     85:2985     86:766      87:2014   
  88:1175     89:3840     90:619      91:7797     92:2066     93:2605   
  94:3568     95:4042     96:1295     97:329      98:1149     99:735    
 100:95      101:1083    102:2832    103:31834   104:4586    105:568    
 106:887     107:2557    108:1098    109:4244    110:2107    111:3174   
 112:2062    113:1810    114:1647    115:1985    116:1913    117:2514   
 118:2672    119:1980    120:1816    121:1140    122:2577    123:2184   
 124:1618    125:2516    128:1450    129:1047    130:1020    131:1968   
 132:814     133:422     134:1791    135:306     136:881     137:960    
 138:2623    139:1581    140:1253    141:1302    142:1476    143:1492   
 144:1006    145:342     146:1960    147:1596    148:2431    149:2170   
 150:881     151:1170    152:1849    153:506     154:4696    155:1379   
 156:1891    157:1323    158:1099    159:2231    160:2595    161:1571   
 162:3510    163:1569    164:1721    165:1849    166:1039    167:1738   
 168:3878    169:935     170:4625    171:902     172:3644    173:2988   
 174:1045    175:1147    176:3747    177:4482    178:3619    179:2165   
 180:2458    181:3491    182:3444    183:1989    184:2296    185:20488  
 186:4737    187:4111    188:4126    189:3721    190:9230    191:1389   
 192:10941   193:8945    194:7310    195:5178    196:3121    197:2465   
 198:6021    199:6096    200:7991    201:5906    202:10612   203:10095  
 204:4560    205:3660    206:4353    207:3450    208:4145    209:4933   
 210:4478    211:2534    212:4255    213:3593    214:1096    215:60     
 216:6721    217:2761    218:1282    219:584     220:2032    221:961    
 222:854     223:2191   

End of report


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