[Tznog] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Jul 18 21:02:18 EAT 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 19 Jul, 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: 989694
Prefixes after maximum aggregation (per Origin AS): 383745
Deaggregation factor: 2.58
Unique aggregates announced (without unneeded subnets): 486902
Number of IPv4 prefixes with a valid ROA: 550929
Number of IPv4 prefixes with an invalid ROA: 1483
Number of IPv4 prefixes with no ROA: 437282
Total ASes present in the Internet Routing Table: 77085
Prefixes per ASN: 12.84
Origin-only ASes present in the Internet Routing Table: 65930
Origin ASes announcing only one prefix: 26925
Transit ASes present in the Internet Routing Table: 11155
Transit-only ASes present in the Internet Routing Table: 573
Average AS path length visible in the Internet Routing Table: 5.2
Max AS path length visible: 75
Max AS path prepend of ASN ( 63293) 64
Prefixes from unregistered ASNs in the Routing Table: 1126
Number of instances of unregistered ASNs: 1170
Number of 32-bit ASNs allocated by the RIRs: 46890
Number of 32-bit ASNs visible in the Routing Table: 38614
Prefixes from 32-bit ASNs in the Routing Table: 206129
Number of bogon 32-bit ASNs visible in the Routing Table: 117
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 439
Number of addresses announced to Internet: 3107910272
Equivalent to 185 /8s, 62 /16s and 242 /24s
Percentage of available address space announced: 83.9
Percentage of allocated address space announced: 83.9
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: 323283
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 262807
Total APNIC prefixes after maximum aggregation: 78488
APNIC Deaggregation factor: 3.35
Prefixes being announced from the APNIC address blocks: 253694
Unique aggregates announced from the APNIC address blocks: 105031
APNIC Region origin ASes present in the Internet Routing Table: 14754
APNIC Prefixes per ASN: 17.19
APNIC Region origin ASes announcing only one prefix: 4513
APNIC Region transit ASes present in the Internet Routing Table: 1977
Average APNIC Region AS path length visible: 5.5
Max APNIC Region AS path length visible: 36
Number of APNIC region 32-bit ASNs visible in the Routing Table: 10271
Number of APNIC addresses announced to Internet: 750094592
Equivalent to 44 /8s, 181 /16s and 137 /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: 291313
Total ARIN prefixes after maximum aggregation: 132045
ARIN Deaggregation factor: 2.21
Prefixes being announced from the ARIN address blocks: 293048
Unique aggregates announced from the ARIN address blocks: 141047
ARIN Region origin ASes present in the Internet Routing Table: 19237
ARIN Prefixes per ASN: 15.23
ARIN Region origin ASes announcing only one prefix: 7023
ARIN Region transit ASes present in the Internet Routing Table: 2012
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 75
Number of ARIN region 32-bit ASNs visible in the Routing Table: 5257
Number of ARIN addresses announced to Internet: 1349356544
Equivalent to 80 /8s, 109 /16s and 140 /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: 276320
Total RIPE prefixes after maximum aggregation: 135959
RIPE Deaggregation factor: 2.03
Prefixes being announced from the RIPE address blocks: 275268
Unique aggregates announced from the RIPE address blocks: 177399
RIPE Region origin ASes present in the Internet Routing Table: 28959
RIPE Prefixes per ASN: 9.51
RIPE Region origin ASes announcing only one prefix: 12057
RIPE Region transit ASes present in the Internet Routing Table: 4024
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 49
Number of RIPE region 32-bit ASNs visible in the Routing Table: 12566
Number of RIPE addresses announced to Internet: 732200064
Equivalent to 43 /8s, 164 /16s and 124 /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: 124762
Total LACNIC prefixes after maximum aggregation: 29765
LACNIC Deaggregation factor: 4.19
Prefixes being announced from the LACNIC address blocks: 121095
Unique aggregates announced from the LACNIC address blocks: 49084
LACNIC Region origin ASes present in the Internet Routing Table: 11265
LACNIC Prefixes per ASN: 10.75
LACNIC Region origin ASes announcing only one prefix: 2644
LACNIC Region transit ASes present in the Internet Routing Table: 2562
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: 9231
Number of LACNIC addresses announced to Internet: 171116800
Equivalent to 10 /8s, 51 /16s and 9 /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: 33366
Total AfriNIC prefixes after maximum aggregation: 6743
AfriNIC Deaggregation factor: 4.95
Prefixes being announced from the AfriNIC address blocks: 46150
Unique aggregates announced from the AfriNIC address blocks: 13969
AfriNIC Region origin ASes present in the Internet Routing Table: 1924
AfriNIC Prefixes per ASN: 23.99
AfriNIC Region origin ASes announcing only one prefix: 688
AfriNIC Region transit ASes present in the Internet Routing Table: 384
Average AfriNIC Region AS path length visible: 6.0
Max AfriNIC Region AS path length visible: 59
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1289
Number of AfriNIC addresses announced to Internet: 104899840
Equivalent to 6 /8s, 64 /16s and 165 /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 11881 8762 118 CHINAMOBILE-CN China Mobile Communication
7545 6159 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4814 4192 76 ERX-CERNET-BKB China Education and Resear
9498 4467 536 312 BBIL-AP BHARTI Airtel Ltd., IN
7552 3918 1332 27 VIETEL-AS-AP Viettel Group, VN
7713 3704 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones
45899 3294 1869 102 VNPT-AS-VN VNPT Corp, VN
24560 2909 863 522 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd.,
56046 2743 812 181 CMNET-JIANGSU-AP China Mobile communicati
4766 2323 11519 609 KIXS-AS-KR Korea Telecom, KR
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 13682 40975 5271 AMAZON-02, US
11492 4812 319 611 CABLEONE, US
7155 3856 286 85 VIASAT-SP-BACKBONE, US
6327 3637 1320 82 SHAW, CA
174 3396 8771 859 COGENT-174, US
22773 3340 3032 166 ASN-CXA-ALL-CCI-22773-RDC, US
749 3223 54766 2474 DNIC-AS-00749, US
396982 3196 3855 432 GOOGLE-CLOUD-PLATFORM, US
16625 2937 1239 2182 AKAMAI-AS, US
4155 2871 218 1734 USDA-1, 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 7600 1712 148 UNI2-AS, ES
39891 4798 293 63 ALJAWWALSTC-AS, SA
20940 3929 3395 127 AKAMAI-ASN1, NL
9009 3786 361 2107 M247, RO
12389 3127 2317 874 ROSTELECOM-AS PJSC Rostelecom. Technical
34984 2403 361 583 TELLCOM-AS, TR
212238 2323 164 1691 CDNEXT, GB
13188 1606 100 34 TRIOLAN, UA
8452 1550 1852 14 TE-AS TE-AS, EG
203020 1472 164 649 HOSTROYALE, IN
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 12306 3255 574 UNINET, MX
10620 3514 482 1020 Telmex Colombia S.A., CO
13999 2527 511 349 Mega Cable, S.A. de C.V., MX
11830 1987 369 64 Instituto Costarricense de Electricidad y
28573 1370 2435 268 Claro NXT Telecomunicacoes Ltda, BR
3816 1346 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC,
11664 1201 278 33 Techtel LMDS Comunicaciones Interactivas
6147 1196 371 22 Telefonica del Peru S.A.A., PE
22884 1066 68 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M
6503 1019 373 162 Axtel, S.A.B. de C.V., MX
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 1733 660 28 RAYA-AS, EG
29571 1607 102 33 ORANGE-COTE-IVOIRE, CI
36903 1249 554 96 MT-MPLS, MA
36992 1219 1482 323 ETISALAT-MISR, EG
36935 822 520 43 Vodafone-, EG
37069 702 1112 11 MOBINIL, EG
24863 661 389 22 LINKdotNET-AS, EG
36914 572 82 3 KENET-AS, KE
20011 568 154 212 INTERNET-SOLUTIONS, ZA
15399 539 57 59 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
16509 13682 40975 5271 AMAZON-02, US
8151 12306 3255 574 UNINET, MX
9808 11881 8762 118 CHINAMOBILE-CN China Mobile Communication
12479 7600 1712 148 UNI2-AS, ES
7545 6159 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4814 4192 76 ERX-CERNET-BKB China Education and Resear
11492 4812 319 611 CABLEONE, US
39891 4798 293 63 ALJAWWALSTC-AS, SA
9498 4467 536 312 BBIL-AP BHARTI Airtel Ltd., IN
20940 3929 3395 127 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 11881 11763 CHINAMOBILE-CN China Mobile Communications Grou
8151 12306 11732 UNINET, MX
12479 7600 7452 UNI2-AS, ES
7545 6159 5538 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4814 4738 ERX-CERNET-BKB China Education and Research Net
39891 4798 4735 ALJAWWALSTC-AS, SA
11492 4812 4201 CABLEONE, US
9498 4467 4155 BBIL-AP BHARTI Airtel Ltd., IN
7552 3918 3891 VIETEL-AS-AP Viettel Group, VN
20940 3929 3802 AKAMAI-ASN1, NL
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
22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US
33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US
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
398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D
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
46639 UNALLOCATED 8.38.73.0/24 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: 21859 ZEN-ECN, 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
23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA
23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US
23.147.224.0/24 Origin: 27392 639-DATACENTERS, US
23.147.224.0/24 Transit: 3356 LEVEL3, 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 /9:14 /10:41 /11:92 /12:298
/13:580 /14:1201 /15:2127 /16:13781 /17:8289 /18:13572
/19:24742 /20:44446 /21:52217 /22:111830 /23:102813 /24:612839
/25:796 /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 6542 7600 UNI2-AS, ES
8151 6526 12306 UNINET, MX
11492 3606 4812 CABLEONE, US
39891 3489 4798 ALJAWWALSTC-AS, SA
6327 3433 3637 SHAW, CA
7155 2815 3856 VIASAT-SP-BACKBONE, US
22773 2493 3340 ASN-CXA-ALL-CCI-22773-RDC, US
16509 2345 13682 AMAZON-02, US
30036 2270 2611 MEDIACOM-ENTERPRISE-BUSINESS, US
10620 2201 3514 Telmex Colombia S.A., CO
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1768 2:1501 3:853 4:10 5:4701 6:163
7:6 8:1577 9:1 11:172 12:1334 13:452
14:2600 15:365 16:286 17:383 18:897 20:558
21:4 22:188 23:7696 24:2677 25:2 27:2753
29:19 31:3344 32:38 33:1 34:80 35:259
36:3644 37:4571 38:9442 39:913 40:253 41:4154
42:935 43:2662 44:368 45:18611 46:5093 47:337
49:1882 50:1947 51:592 52:1553 54:327 55:1113
56:11 57:274 58:2111 59:1353 60:1174 61:2809
62:2945 63:1799 64:5522 65:2163 66:4722 67:3092
68:1090 69:3895 70:1050 71:625 72:2856 74:2789
75:1504 76:612 77:2756 78:1898 79:1693 80:2215
81:2046 82:3175 83:1436 84:1887 85:3463 86:1088
87:2376 88:1316 89:4414 90:778 91:8405 92:2701
93:2943 94:4069 95:4400 96:1446 97:311 98:955
99:696 100:71 101:1192 102:3875 103:32205 104:5217
105:756 106:971 107:2639 108:1189 109:4174 110:2240
111:3371 112:2241 113:1575 114:1962 115:2181 116:2064
117:2582 118:2463 119:1938 120:2159 121:1382 122:2802
123:2235 124:1696 125:2910 126:91 128:1595 129:973
130:1303 131:2032 132:768 133:450 134:1640 135:350
136:1450 137:1181 138:2815 139:1575 140:1697 141:1519
142:1905 143:1995 144:1194 145:562 146:2179 147:2103
148:2708 149:2941 150:1230 151:2231 152:2093 153:525
154:7572 155:1846 156:3105 157:1939 158:1347 159:2513
160:3616 161:1880 162:3860 163:2251 164:1871 165:2347
166:1527 167:2022 168:3996 169:788 170:5142 171:1008
172:4217 173:3394 174:920 175:1317 176:3722 177:4761
178:3932 179:2314 180:2598 181:4129 182:3506 183:1914
184:2075 185:21590 186:5237 187:4685 188:4264 189:4343
190:9557 191:1504 192:11354 193:9478 194:7775 195:5594
196:3282 197:3165 198:6220 199:8611 200:8232 201:6384
202:10589 203:10601 204:4676 205:3653 206:4529 207:3636
208:4275 209:5184 210:4850 211:2695 212:4563 213:3823
214:1025 215:46 216:6755 217:3209 218:1421 219:562
220:2145 221:1191 222:874 223:2690
End of report
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