[SANOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Feb 21 18:02:26 UTC 2025
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
UKNOF, 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 22 Feb, 2025
IPv4 BGP Table (Global) as seen at Japan.
Report Website: https://thyme.apnic.net
Detailed Analysis: https://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 975966
Prefixes after maximum aggregation (per Origin AS): 373351
Deaggregation factor: 2.61
Unique aggregates announced (without unneeded subnets): 475760
Number of IPv4 prefixes with a valid ROA: 332986
Number of IPv4 prefixes with an invalid ROA: 1212
Number of IPv4 prefixes with no ROA: 641768
Total ASes present in the Internet Routing Table: 76673
Prefixes per ASN: 12.73
Origin-only ASes present in the Internet Routing Table: 65614
Origin ASes announcing only one prefix: 26873
Transit ASes present in the Internet Routing Table: 11059
Transit-only ASes present in the Internet Routing Table: 535
Average AS path length visible in the Internet Routing Table: 5.2
Max AS path length visible: 65
Max AS path prepend of ASN ( 37447) 57
Prefixes from unregistered ASNs in the Routing Table: 1056
Number of instances of unregistered ASNs: 1074
Number of 32-bit ASNs allocated by the RIRs: 46159
Number of 32-bit ASNs visible in the Routing Table: 37882
Prefixes from 32-bit ASNs in the Routing Table: 199407
Number of bogon 32-bit ASNs visible in the Routing Table: 61
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 515
Number of addresses announced to Internet: 3113283456
Equivalent to 185 /8s, 144 /16s and 239 /24s
Percentage of available address space announced: 84.1
Percentage of allocated address space announced: 84.1
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: 320234
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 256430
Total APNIC prefixes after maximum aggregation: 76844
APNIC Deaggregation factor: 3.34
Prefixes being announced from the APNIC address blocks: 248440
Unique aggregates announced from the APNIC address blocks: 102850
APNIC Region origin ASes present in the Internet Routing Table: 14552
APNIC Prefixes per ASN: 17.07
APNIC Region origin ASes announcing only one prefix: 4445
APNIC Region transit ASes present in the Internet Routing Table: 1954
Average APNIC Region AS path length visible: 5.4
Max APNIC Region AS path length visible: 38
Number of APNIC region 32-bit ASNs visible in the Routing Table: 10028
Number of APNIC addresses announced to Internet: 754011136
Equivalent to 44 /8s, 241 /16s and 76 /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, 131072-155961
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: 287524
Total ARIN prefixes after maximum aggregation: 127702
ARIN Deaggregation factor: 2.25
Prefixes being announced from the ARIN address blocks: 289223
Unique aggregates announced from the ARIN address blocks: 135948
ARIN Region origin ASes present in the Internet Routing Table: 19233
ARIN Prefixes per ASN: 15.04
ARIN Region origin ASes announcing only one prefix: 7016
ARIN Region transit ASes present in the Internet Routing Table: 2009
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 34
Number of ARIN region 32-bit ASNs visible in the Routing Table: 5162
Number of ARIN addresses announced to Internet: 1348540160
Equivalent to 80 /8s, 97 /16s and 23 /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, 393216-402332
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, 45/8, 47/8, 48/8, 50/8, 52/8,
54/8, 55/8, 56/8, 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: 272217
Total RIPE prefixes after maximum aggregation: 132166
RIPE Deaggregation factor: 2.06
Prefixes being announced from the RIPE address blocks: 269601
Unique aggregates announced from the RIPE address blocks: 172682
RIPE Region origin ASes present in the Internet Routing Table: 28853
RIPE Prefixes per ASN: 9.34
RIPE Region origin ASes announcing only one prefix: 12055
RIPE Region transit ASes present in the Internet Routing Table: 4005
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 45
Number of RIPE region 32-bit ASNs visible in the Routing Table: 12281
Number of RIPE addresses announced to Internet: 732236928
Equivalent to 43 /8s, 165 /16s and 12 /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
196608-216475
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
53/8, 57/8, 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: 123795
Total LACNIC prefixes after maximum aggregation: 29154
LACNIC Deaggregation factor: 4.25
Prefixes being announced from the LACNIC address blocks: 120856
Unique aggregates announced from the LACNIC address blocks: 48862
LACNIC Region origin ASes present in the Internet Routing Table: 11208
LACNIC Prefixes per ASN: 10.78
LACNIC Region origin ASes announcing only one prefix: 2663
LACNIC Region transit ASes present in the Internet Routing Table: 2507
Average LACNIC Region AS path length visible: 5.9
Max LACNIC Region AS path length visible: 56
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9142
Number of LACNIC addresses announced to Internet: 173869056
Equivalent to 10 /8s, 93 /16s and 8 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-274844 + 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: 34944
Total AfriNIC prefixes after maximum aggregation: 6819
AfriNIC Deaggregation factor: 5.12
Prefixes being announced from the AfriNIC address blocks: 47331
Unique aggregates announced from the AfriNIC address blocks: 14986
AfriNIC Region origin ASes present in the Internet Routing Table: 1912
AfriNIC Prefixes per ASN: 24.75
AfriNIC Region origin ASes announcing only one prefix: 694
AfriNIC Region transit ASes present in the Internet Routing Table: 383
Average AfriNIC Region AS path length visible: 6.0
Max AfriNIC Region AS path length visible: 65
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1269
Number of AfriNIC addresses announced to Internet: 104361216
Equivalent to 6 /8s, 56 /16s and 109 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 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 10343 8754 93 CHINAMOBILE-CN China Mobile Communication
7545 6213 844 661 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4812 4192 76 ERX-CERNET-BKB China Education and Resear
9498 4240 530 275 BBIL-AP BHARTI Airtel Ltd., IN
7552 3918 1331 25 VIETEL-AS-AP Viettel Group, VN
7713 3672 1036 72 TELKOMNET-AS-AP PT Telekomunikasi Indones
45899 3271 1869 102 VNPT-AS-VN VNPT Corp, VN
24560 2846 854 531 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd.,
4766 2356 11522 606 KIXS-AS-KR Korea Telecom, KR
45090 2207 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer
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 12761 39188 3791 AMAZON-02, US
11492 4705 312 562 CABLEONE, US
7155 4175 286 83 VIASAT-SP-BACKBONE, US
6327 3623 1320 81 SHAW, CA
174 3489 8764 936 COGENT-174, US
22773 3370 3033 179 ASN-CXA-ALL-CCI-22773-RDC, US
749 3260 54879 2507 DNIC-AS-00749, US
16625 2972 1272 2184 AKAMAI-AS, US
396982 2931 3660 450 GOOGLE-CLOUD-PLATFORM, US
30036 2588 359 278 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 7770 1714 145 UNI2-AS, ES
39891 4797 293 62 ALJAWWALSTC-AS, SA
20940 3932 3395 131 AKAMAI-ASN1, NL
9009 3733 320 1919 M247, RO
12389 2998 2303 894 ROSTELECOM-AS, RU
34984 2369 361 581 TELLCOM-AS, TR
212238 2018 147 1491 CDNEXT, GB
13188 1606 100 34 TRIOLAN, UA
8452 1601 1852 14 TE-AS TE-AS, EG
62240 1498 99 749 CLOUVIDER Clouvider - Global ASN, GB
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 11764 3231 596 UNINET, MX
10620 3544 492 951 Telmex Colombia S.A., CO
13999 2514 541 366 Mega Cable, S.A. de C.V., MX
11830 1992 369 64 Instituto Costarricense de Electricidad y
28573 1351 2437 265 Claro NXT Telecomunicacoes Ltda, BR
3816 1329 777 211 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC,
11664 1157 278 33 Techtel LMDS Comunicaciones Interactivas
6147 1156 371 22 Telefonica del Peru S.A.A., PE
6503 1130 374 163 Axtel, S.A.B. de C.V., MX
22884 1049 98 372 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M
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
24835 1683 599 30 RAYA-AS, EG
24863 1644 389 16 LINKdotNET-AS, EG
29571 1559 98 102 ORANGE-COTE-IVOIRE, CI
36992 1426 1518 286 ETISALAT-MISR, EG
36903 1249 554 96 MT-MPLS, MA
36935 997 521 42 Vodafone-, EG
20011 980 183 284 INTERNET-SOLUTIONS, ZA
37069 847 1083 15 MOBINIL, EG
36914 559 82 3 KENET-AS, KE
6713 558 1861 35 IAM-AS, MA
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
16509 12761 39188 3791 AMAZON-02, US
8151 11764 3231 596 UNINET, MX
9808 10343 8754 93 CHINAMOBILE-CN China Mobile Communication
12479 7770 1714 145 UNI2-AS, ES
7545 6213 844 661 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4812 4192 76 ERX-CERNET-BKB China Education and Resear
39891 4797 293 62 ALJAWWALSTC-AS, SA
11492 4705 312 562 CABLEONE, US
9498 4240 530 275 BBIL-AP BHARTI Airtel Ltd., IN
7155 4175 286 83 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
8151 11764 11168 UNINET, MX
9808 10343 10250 CHINAMOBILE-CN China Mobile Communications Grou
12479 7770 7625 UNI2-AS, ES
7545 6213 5552 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4812 4736 ERX-CERNET-BKB China Education and Research Net
39891 4797 4735 ALJAWWALSTC-AS, SA
11492 4705 4143 CABLEONE, US
7155 4175 4092 VIASAT-SP-BACKBONE, US
9498 4240 3965 BBIL-AP BHARTI Airtel Ltd., IN
7552 3918 3893 VIETEL-AS-AP Viettel Group, VN
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
400866 UNALLOCATED 2.59.148.0/23 21859 ZEN-ECN, US
22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US
33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US
12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-D
46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US
53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US
393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US
396894 UNALLOCATED 8.28.201.0/24 46887 CROWNCASTLE-AS46887, US
394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US
54338 UNALLOCATED 8.33.241.0/24 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
14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US
14.192.20.0/22 Transit: 6939 HURRICANE, US
23.140.16.0/24 Origin: 63371 RESERVED, ZZ
23.140.16.0/24 Transit: 10796 TWC-10796-MIDWEST, US
23.140.48.0/24 Origin: 63371 RESERVED, ZZ
23.140.48.0/24 Transit: 7018 ATT-INTERNET4, US
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 RESERVED, ZZ
23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US
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 /9:16 /10:42 /11:92 /12:307
/13:585 /14:1215 /15:2143 /16:13947 /17:8345 /18:13779
/19:24765 /20:44704 /21:52469 /22:112637 /23:101110 /24:599093
/25:701 /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 6723 7770 UNI2-AS, ES
8151 5968 11764 UNINET, MX
11492 3556 4705 CABLEONE, US
39891 3489 4797 ALJAWWALSTC-AS, SA
6327 3418 3623 SHAW, CA
7155 3121 4175 VIASAT-SP-BACKBONE, US
22773 2510 3370 ASN-CXA-ALL-CCI-22773-RDC, US
16509 2266 12761 AMAZON-02, US
30036 2248 2588 MEDIACOM-ENTERPRISE-BUSINESS, US
10620 2184 3544 Telmex Colombia S.A., CO
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1668 2:1515 3:569 4:10 5:4494 6:165
7:6 8:1556 9:1 11:172 12:1381 13:349
14:2547 15:347 16:274 17:358 18:915 20:450
21:4 22:188 23:7315 24:2728 25:2 27:2668
29:19 31:3148 32:38 34:78 35:201 36:2420
37:4605 38:8629 39:896 40:153 41:4175 42:953
43:2514 44:349 45:18290 46:4969 47:293 49:1979
50:1891 51:590 52:1569 54:300 55:977 56:9
57:241 58:2156 59:1278 60:1167 61:2796 62:2950
63:1831 64:5504 65:2190 66:4625 67:3028 68:1124
69:3973 70:1106 71:608 72:2877 74:2786 75:1646
76:615 77:2659 78:1855 79:1721 80:2224 81:2022
82:2587 83:1412 84:1788 85:3355 86:1020 87:2412
88:1284 89:4312 90:762 91:8322 92:2805 93:2861
94:3917 95:4205 96:1363 97:318 98:979 99:741
100:71 101:1149 102:3687 103:32357 104:4794 105:751
106:991 107:2591 108:1209 109:4090 110:2230 111:3330
112:2050 113:1541 114:1943 115:2097 116:2048 117:2743
118:2422 119:1928 120:1895 121:1417 122:2767 123:2172
124:1613 125:2901 126:94 128:1568 129:959 130:1277
131:1849 132:796 133:450 134:1526 135:325 136:1332
137:1157 138:2879 139:1605 140:1568 141:1483 142:1829
143:1611 144:1065 145:466 146:2134 147:2061 148:2577
149:2869 150:1230 151:1685 152:2112 153:504 154:7587
155:1606 156:3179 157:1888 158:1252 159:2440 160:3546
161:1884 162:3687 163:1830 164:1677 165:2178 166:1362
167:1885 168:4063 169:794 170:5073 171:1002 172:4343
173:3243 174:918 175:1265 176:3615 177:4774 178:3768
179:2238 180:2577 181:4004 182:3370 183:1807 184:2291
185:21481 186:5084 187:4341 188:4228 189:4200 190:9629
191:1527 192:11186 193:9384 194:7756 195:5497 196:3275
197:3667 198:6187 199:8335 200:8174 201:6306 202:10591
203:10538 204:4561 205:3691 206:4620 207:3581 208:4195
209:5186 210:4810 211:2630 212:4523 213:3743 214:1060
215:42 216:6585 217:3101 218:1390 219:538 220:2113
221:1052 222:849 223:2341
End of report
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