[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jun 16 18:02:08 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 17 Jun, 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:                              926000
    Prefixes after maximum aggregation (per Origin AS):          350751
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      450771
Total ASes present in the Internet Routing Table:                 74516
    Prefixes per ASN:                                             12.43
Origin-only ASes present in the Internet Routing Table:           63992
Origin ASes announcing only one prefix:                           26279
Transit ASes present in the Internet Routing Table:               10524
Transit-only ASes present in the Internet Routing Table:            438
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:              1032
    Number of instances of unregistered ASNs:                      1034
Number of 32-bit ASNs allocated by the RIRs:                      42072
Number of 32-bit ASNs visible in the Routing Table:               34704
Prefixes from 32-bit ASNs in the Routing Table:                  172880
Number of bogon 32-bit ASNs visible in the Routing Table:            17
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            587
Number of addresses announced to Internet:                   3056410880
    Equivalent to 182 /8s, 45 /16s and 33 /24s
    Percentage of available address space announced:               82.6
    Percentage of allocated address space announced:               82.6
    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:      308967

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

Prefixes being announced by APNIC Region ASes:                   245881
    Total APNIC prefixes after maximum aggregation:               69632
    APNIC Deaggregation factor:                                    3.53
Prefixes being announced from the APNIC address blocks:          239932
    Unique aggregates announced from the APNIC address blocks:    98508
APNIC Region origin ASes present in the Internet Routing Table:   13456
    APNIC Prefixes per ASN:                                       17.83
APNIC Region origin ASes announcing only one prefix:               3973
APNIC Region transit ASes present in the Internet Routing Table:   1789
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8774
Number of APNIC addresses announced to Internet:              773694848
    Equivalent to 46 /8s, 29 /16s and 165 /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:                    270860
    Total ARIN prefixes after maximum aggregation:               123221
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           273521
    Unique aggregates announced from the ARIN address blocks:    130531
ARIN Region origin ASes present in the Internet Routing Table:    19120
    ARIN Prefixes per ASN:                                        14.31
ARIN Region origin ASes announcing only one prefix:                6995
ARIN Region transit ASes present in the Internet Routing Table:    1952
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:    4815
Number of ARIN addresses announced to Internet:              1280361216
    Equivalent to 76 /8s, 80 /16s and 195 /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:                    260028
    Total RIPE prefixes after maximum aggregation:               122814
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           256155
    Unique aggregates announced from the RIPE address blocks:    159307
RIPE Region origin ASes present in the Internet Routing Table:    28348
    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:    3957
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11215
Number of RIPE addresses announced to Internet:               717534848
    Equivalent to 42 /8s, 196 /16s and 182 /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:                  118741
    Total LACNIC prefixes after maximum aggregation:              28504
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:         117869
    Unique aggregates announced from the LACNIC address blocks:   49491
LACNIC Region origin ASes present in the Internet Routing Table:  11008
    LACNIC Prefixes per ASN:                                      10.71
LACNIC Region origin ASes announcing only one prefix:              2655
LACNIC Region transit ASes present in the Internet Routing Table:  2293
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8799
Number of LACNIC addresses announced to Internet:             177002752
    Equivalent to 10 /8s, 140 /16s and 217 /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:                  29458
    Total AfriNIC prefixes after maximum aggregation:              5850
    AfriNIC Deaggregation factor:                                  5.04
Prefixes being announced from the AfriNIC address blocks:         37936
    Unique aggregates announced from the AfriNIC address blocks:  12452
AfriNIC Region origin ASes present in the Internet Routing Table:  1753
    AfriNIC Prefixes per ASN:                                     21.64
AfriNIC Region origin ASes announcing only one prefix:              612
AfriNIC Region transit ASes present in the Internet Routing Table:  329
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       40
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1101
Number of AfriNIC addresses announced to Internet:            107417344
    Equivalent to 6 /8s, 103 /16s and 15 /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        9520       8706      40  CHINAMOBILE-CN China Mobile Communicati
  7545        5723        784     689  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4858       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4213        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3559       1043      66  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3376       1856      96  VNPT-AS-VN VNPT Corp, VN
  7552        3362       1331      21  VIETEL-AS-AP Viettel Group, VN
  9498        3026        498     252  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2537      11253     584  KIXS-AS-KR Korea Telecom, KR
 24560        2427        836     445  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        8516      10866    3116  AMAZON-02, US
 11492        4503        298     624  CABLEONE, US
  7155        4105        284      78  VIASAT-SP-BACKBONE, US
 22773        3564       3051     266  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3524       1319      66  SHAW, CA
 16625        3128       1557    2352  AKAMAI-AS, US
   749        3126      54969    2378  DNIC-AS-00749, US
396982        2662       3593     376  GOOGLE-CLOUD-PLATFORM, US
 30036        2499        359     427  MEDIACOM-ENTERPRISE-BUSINESS, US
  7018        2458      24006    1558  ATT-INTERNET4, 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        7301       1706     141  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4073       3398     162  AKAMAI-ASN1, NL
  8551        3461        369      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2967       2292     912  ROSTELECOM-AS, RU
  9009        2655        246    1382  M247, RO
 34984        2297        361     606  TELLCOM-AS, TR
  6849        1970        307      17  UKRTELNET, UA
 58224        1827        946     537  TCI, IR
 61317        1646        110    1274  ASDETUK www.heficed.com, US

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       11406       3372     594  Uninet S.A. de C.V., MX
 10620        3527        506     845  Telmex Colombia S.A., CO
 13999        2359        353     627  Mega Cable, S.A. de C.V., MX
 11830        2269        369      64  Instituto Costarricense de Electricidad
 28573        1318       2323     241  Claro NXT Telecomunicacoes Ltda, BR
  3816        1303        773     168  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1302        343     511  Axtel, S.A.B. de C.V., MX
  6147        1133        370      22  Telefonica del Peru S.A.A., PE
 11664        1102        180     440  Techtel LMDS Comunicaciones Interactiva
 26615        1034       2498      45  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        1579        393      19  LINKdotNET-AS, EG
 24835        1536        533      27  RAYA-AS, EG
 36992        1308       1518     281  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1038         67      47  ORANGE-COTE-IVOIRE, CI
 36935         917        520      42  Vodafone-, EG
  6713         549       1861      34  IAM-AS, MA
 15399         532         54      49  WANANCHI-, KE
 24757         493         73       5  EthioNet-AS, ET
 37342         478         32       1  MOVITEL, MZ

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       11406       3372     594  Uninet S.A. de C.V., MX
  9808        9520       8706      40  CHINAMOBILE-CN China Mobile Communicati
 16509        8516      10866    3116  AMAZON-02, US
 12479        7301       1706     141  UNI2-AS, ES
  7545        5723        784     689  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897        290      61  ALJAWWALSTC-AS, SA
  4538        4858       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4503        298     624  CABLEONE, US
 18403        4213        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4105        284      78  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        9520         9480  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7301         7160  UNI2-AS, ES
 16509        8516         5400  AMAZON-02, US
  7545        5723         5034  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897         4836  ALJAWWALSTC-AS, SA
  4538        4858         4783  ERX-CERNET-BKB China Education and Research Net
 18403        4213         4188  FPT-AS-AP FPT Telecom Company, VN
  7155        4105         4027  VIASAT-SP-BACKBONE, US
 20940        4073         3911  AKAMAI-ASN1, NL
 11492        4503         3879  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            46887  LIGHTOWER, 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
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

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      /11:103     /12:301     
/13:582     /14:1199    /15:2066    /16:13471   /17:8253    /18:13863   
/19:25181   /20:44103   /21:51528   /22:110037  /23:98530   /24:555969  
/25:745     /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        6389        7301  UNI2-AS, ES
  8151        5339       11406  Uninet S.A. de C.V., MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3415        4503  CABLEONE, US
  6327        3334        3524  SHAW, CA
  7155        3090        4105  VIASAT-SP-BACKBONE, US
  8551        2929        3461  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2630        3564  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2155        2499  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2086        3527  Telmex Colombia S.A., CO

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

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

   1:2186      2:1321      3:206       4:5         5:4541      6:132    
   7:6         8:1546      9:1        11:172      12:1528     13:387    
  14:2318     15:306      16:193      17:371      18:453      20:260    
  21:4        22:188      23:6309     24:2588     25:6        27:2471   
  29:19       31:2512     32:81       34:22       35:112      36:1969   
  37:4679     38:4922     39:847      40:151      41:3919     42:2017   
  43:2327     44:308      45:16571    46:4317     47:375      49:1766   
  50:1873     51:584      52:1594     54:393      55:873      56:8      
  57:117      58:1888     59:1103     60:987      61:2535     62:2676   
  63:1908     64:5664     65:2322     66:5068     67:3058     68:1345   
  69:4133     70:1205     71:685      72:2989     74:2631     75:1557   
  76:615      77:2454     78:1824     79:2991     80:2112     81:1798   
  82:1498     83:1263     84:1529     85:3014     86:757      87:2015   
  88:1181     89:3747     90:616      91:7750     92:2045     93:2619   
  94:3619     95:4049     96:1316     97:336      98:1135     99:744    
 100:91      101:1080    102:2756    103:31521   104:4612    105:505    
 106:961     107:2577    108:1052    109:4204    110:2114    111:3174   
 112:2047    113:1799    114:1669    115:1991    116:1900    117:2505   
 118:2592    119:1989    120:1827    121:1131    122:2604    123:2175   
 124:1615    125:2507    128:1469    129:1062    130:1013    131:1980   
 132:816     133:422     134:1819    135:307     136:880     137:948    
 138:2579    139:1565    140:1259    141:1436    142:1460    143:1502   
 144:1126    145:344     146:1955    147:1591    148:2434    149:2248   
 150:883     151:1158    152:1820    153:491     154:4560    155:1419   
 156:1825    157:1316    158:1090    159:2266    160:2569    161:1549   
 162:3516    163:1543    164:1626    165:1816    166:1094    167:1714   
 168:3869    169:952     170:4600    171:899     172:3579    173:2967   
 174:1075    175:1175    176:3782    177:4642    178:3619    179:2163   
 180:2440    181:3479    182:3431    183:2075    184:2336    185:20342  
 186:4817    187:3972    188:4129    189:3695    190:9229    191:1447   
 192:10924   193:8913    194:7354    195:5178    196:3129    197:2386   
 198:5971    199:6105    200:8002    201:5939    202:10625   203:10292  
 204:4562    205:3718    206:4302    207:3456    208:4132    209:4908   
 210:4451    211:2524    212:4233    213:3633    214:1086    215:59     
 216:6667    217:2731    218:1293    219:580     220:1998    221:963    
 222:856     223:2182   

End of report


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