[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri May 26 18:03:24 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 27 May, 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:                              924479
    Prefixes after maximum aggregation (per Origin AS):          349930
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      449848
Total ASes present in the Internet Routing Table:                 74440
    Prefixes per ASN:                                             12.42
Origin-only ASes present in the Internet Routing Table:           63887
Origin ASes announcing only one prefix:                           26267
Transit ASes present in the Internet Routing Table:               10553
Transit-only ASes present in the Internet Routing Table:            433
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:              1060
    Number of instances of unregistered ASNs:                      1062
Number of 32-bit ASNs allocated by the RIRs:                      41953
Number of 32-bit ASNs visible in the Routing Table:               34629
Prefixes from 32-bit ASNs in the Routing Table:                  172179
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:            582
Number of addresses announced to Internet:                   3056605440
    Equivalent to 182 /8s, 48 /16s and 25 /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:      308683

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

Prefixes being announced by APNIC Region ASes:                   245668
    Total APNIC prefixes after maximum aggregation:               69513
    APNIC Deaggregation factor:                                    3.53
Prefixes being announced from the APNIC address blocks:          239695
    Unique aggregates announced from the APNIC address blocks:    98351
APNIC Region origin ASes present in the Internet Routing Table:   13436
    APNIC Prefixes per ASN:                                       17.84
APNIC Region origin ASes announcing only one prefix:               3974
APNIC Region transit ASes present in the Internet Routing Table:   1808
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:   8740
Number of APNIC addresses announced to Internet:              773526912
    Equivalent to 46 /8s, 27 /16s and 21 /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:                    269788
    Total ARIN prefixes after maximum aggregation:               122784
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           272733
    Unique aggregates announced from the ARIN address blocks:    130479
ARIN Region origin ASes present in the Internet Routing Table:    19113
    ARIN Prefixes per ASN:                                        14.27
ARIN Region origin ASes announcing only one prefix:                6982
ARIN Region transit ASes present in the Internet Routing Table:    1961
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:    4805
Number of ARIN addresses announced to Internet:              1280804352
    Equivalent to 76 /8s, 87 /16s and 134 /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:                    259994
    Total RIPE prefixes after maximum aggregation:               122472
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           255883
    Unique aggregates announced from the RIPE address blocks:    158701
RIPE Region origin ASes present in the Internet Routing Table:    28316
    RIPE Prefixes per ASN:                                         9.04
RIPE Region origin ASes announcing only one prefix:               12051
RIPE Region transit ASes present in the Internet Routing Table:    3959
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:   11195
Number of RIPE addresses announced to Internet:               717759104
    Equivalent to 42 /8s, 200 /16s and 34 /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:                  118673
    Total LACNIC prefixes after maximum aggregation:              28557
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         117875
    Unique aggregates announced from the LACNIC address blocks:   49457
LACNIC Region origin ASes present in the Internet Routing Table:  11010
    LACNIC Prefixes per ASN:                                      10.71
LACNIC Region origin ASes announcing only one prefix:              2646
LACNIC Region transit ASes present in the Internet Routing Table:  2283
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:  8793
Number of LACNIC addresses announced to Internet:             177024256
    Equivalent to 10 /8s, 141 /16s and 45 /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:                  29296
    Total AfriNIC prefixes after maximum aggregation:              5839
    AfriNIC Deaggregation factor:                                  5.02
Prefixes being announced from the AfriNIC address blocks:         37711
    Unique aggregates announced from the AfriNIC address blocks:  12382
AfriNIC Region origin ASes present in the Internet Routing Table:  1747
    AfriNIC Prefixes per ASN:                                     21.59
AfriNIC Region origin ASes announcing only one prefix:              614
AfriNIC Region transit ASes present in the Internet Routing Table:  333
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: 1096
Number of AfriNIC addresses announced to Internet:            107095296
    Equivalent to 6 /8s, 98 /16s and 37 /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        9496       8706      40  CHINAMOBILE-CN China Mobile Communicati
  7545        5717        784     691  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4864       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4188        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3572       1043      66  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3380       1856      96  VNPT-AS-VN VNPT Corp, VN
  7552        3232       1331      21  VIETEL-AS-AP Viettel Group, VN
  9498        2964        491     239  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2548      11253     592  KIXS-AS-KR Korea Telecom, KR
 24560        2399        836     446  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        8306      10783    2989  AMAZON-02, US
 11492        4524        300     608  CABLEONE, US
  7155        4042        282      62  VIASAT-SP-BACKBONE, US
 22773        3566       3052     269  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3526       1320      64  SHAW, CA
   749        3099      54980    2351  DNIC-AS-00749, US
 16625        3091       1553    2339  AKAMAI-AS, US
396982        2656       3592     373  GOOGLE-CLOUD-PLATFORM, US
 30036        2505        361     423  MEDIACOM-ENTERPRISE-BUSINESS, US
  7018        2481      24001    1562  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        7308       1707     141  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4110       3398     161  AKAMAI-ASN1, NL
  8551        3876        369      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2951       2292     910  ROSTELECOM-AS, RU
  9009        2720        250    1409  M247, RO
 34984        2279        360     608  TELLCOM-AS, TR
  6849        1956        307      17  UKRTELNET, UA
 58224        1829        945     534  TCI, IR
 61317        1648        110    1236  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       11231       3347     607  Uninet S.A. de C.V., MX
 10620        3521        508     855  Telmex Colombia S.A., CO
 13999        2361        364     629  Mega Cable, S.A. de C.V., MX
 11830        2270        369      64  Instituto Costarricense de Electricidad
 28573        1331       2324     238  Claro NXT Telecomunicacoes Ltda, BR
  3816        1297        768     173  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1294        343     510  Axtel, S.A.B. de C.V., MX
  6147        1134        370      22  Telefonica del Peru S.A.A., PE
 11664        1096        180     441  Techtel LMDS Comunicaciones Interactiva
 26615        1038       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        1572        393      19  LINKdotNET-AS, EG
 24835        1538        533      29  RAYA-AS, EG
 36992        1341       1518     275  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1030         67      47  ORANGE-COTE-IVOIRE, CI
 36935         917        520      42  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         526         54      49  WANANCHI-, KE
 24757         488         73       5  EthioNet-AS, ET
 37342         484         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       11231       3347     607  Uninet S.A. de C.V., MX
  9808        9496       8706      40  CHINAMOBILE-CN China Mobile Communicati
 16509        8306      10783    2989  AMAZON-02, US
 12479        7308       1707     141  UNI2-AS, ES
  7545        5717        784     691  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897        290      61  ALJAWWALSTC-AS, SA
  4538        4864       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4524        300     608  CABLEONE, US
 18403        4188        347      25  FPT-AS-AP FPT Telecom Company, VN
 20940        4110       3398     161  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        9496         9456  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7308         7167  UNI2-AS, ES
 16509        8306         5317  AMAZON-02, US
  7545        5717         5026  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897         4836  ALJAWWALSTC-AS, SA
  4538        4864         4789  ERX-CERNET-BKB China Education and Research Net
 18403        4188         4163  FPT-AS-AP FPT Telecom Company, VN
  7155        4042         3980  VIASAT-SP-BACKBONE, US
 20940        4110         3949  AKAMAI-ASN1, NL
 11492        4524         3916  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
      3507  UNALLOCATED  2.57.241.0/24           213035  AS-SERVERION Serverion B.V.,
      3507  UNALLOCATED  5.105.49.0/24           213035  AS-SERVERION Serverion B.V.,
      3507  UNALLOCATED  5.105.69.0/24           213035  AS-SERVERION Serverion B.V.,
      3507  UNALLOCATED  5.105.206.0/24          213035  AS-SERVERION Serverion B.V.,
     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
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, 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
23.139.232.0/24      Origin:    211619  MAXKO, HR
23.139.232.0/24     Transit:     42864  GIGANET-HU GigaNet Internet Service Prov
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

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     /14:1200    /15:2058    /16:13477   /17:8227    /18:13858   
/19:25131   /20:44109   /21:51369   /22:109931  /23:98288   /24:555029  
/25:747     /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        6386        7308  UNI2-AS, ES
  8151        5249       11231  Uninet S.A. de C.V., MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3433        4524  CABLEONE, US
  8551        3349        3876  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3335        3526  SHAW, CA
  7155        3065        4042  VIASAT-SP-BACKBONE, US
 22773        2634        3566  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2161        2505  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2074        3521  Telmex Colombia S.A., CO

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

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

   1:2175      2:1312      3:181       4:5         5:4536      6:130    
   7:6         8:1546      9:1        11:172      12:1538     13:385    
  14:2306     15:304      16:191      17:374      18:421      20:258    
  21:4        22:188      23:6304     24:2604     25:6        27:2468   
  29:19       31:2486     32:80       34:21       35:112      36:1964   
  37:4659     38:4647     39:844      40:151      41:3924     42:1982   
  43:2366     44:311      45:16521    46:4353     47:363      49:1764   
  50:1868     51:584      52:1589     54:392      55:843      56:8      
  57:115      58:1891     59:1119     60:987      61:2501     62:2714   
  63:1940     64:5664     65:2328     66:5042     67:2927     68:1346   
  69:4142     70:1205     71:670      72:3003     74:2613     75:1554   
  76:610      77:2434     78:1822     79:3176     80:2125     81:1763   
  82:1488     83:1264     84:1534     85:2986     86:765      87:2010   
  88:1174     89:3712     90:615      91:7744     92:2065     93:2614   
  94:3616     95:4040     96:1298     97:336      98:1093     99:745    
 100:69      101:1079    102:2722    103:31356   104:4670    105:504    
 106:949     107:2588    108:1047    109:4415    110:2098    111:3158   
 112:2038    113:1801    114:1648    115:1981    116:1912    117:2508   
 118:2619    119:2012    120:1825    121:1131    122:2598    123:2177   
 124:1610    125:2502    128:1461    129:1059    130:1021    131:1988   
 132:815     133:422     134:1917    135:306     136:880     137:950    
 138:2574    139:1558    140:1248    141:1431    142:1451    143:1544   
 144:1152    145:346     146:1949    147:1592    148:2390    149:2251   
 150:875     151:1152    152:1816    153:491     154:4468    155:1438   
 156:1789    157:1321    158:1082    159:2237    160:2554    161:1548   
 162:3531    163:1533    164:1616    165:1768    166:1100    167:1736   
 168:3903    169:949     170:4597    171:893     172:3565    173:2962   
 174:1047    175:1176    176:3710    177:4699    178:3585    179:2212   
 180:2520    181:3501    182:3389    183:2087    184:2341    185:20285  
 186:4820    187:4054    188:4129    189:3668    190:9178    191:1484   
 192:10925   193:8873    194:7267    195:5142    196:3109    197:2373   
 198:5967    199:6086    200:8028    201:5889    202:10700   203:10301  
 204:4575    205:3704    206:4274    207:3466    208:4102    209:4894   
 210:4446    211:2511    212:4193    213:3619    214:1076    215:59     
 216:6643    217:2717    218:1291    219:580     220:1995    221:971    
 222:883     223:2183   

End of report


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