[cmNOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Aug 22 18:02:27 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 23 Aug, 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: 996855
Prefixes after maximum aggregation (per Origin AS): 387170
Deaggregation factor: 2.57
Unique aggregates announced (without unneeded subnets): 492052
Number of IPv4 prefixes with a valid ROA: 559960
Number of IPv4 prefixes with an invalid ROA: 1195
Number of IPv4 prefixes with no ROA: 435700
Total ASes present in the Internet Routing Table: 77315
Prefixes per ASN: 12.89
Origin-only ASes present in the Internet Routing Table: 66147
Origin ASes announcing only one prefix: 27043
Transit ASes present in the Internet Routing Table: 11168
Transit-only ASes present in the Internet Routing Table: 563
Average AS path length visible in the Internet Routing Table: 5.2
Max AS path length visible: 59
Max AS path prepend of ASN ( 37447) 54
Prefixes from unregistered ASNs in the Routing Table: 1062
Number of instances of unregistered ASNs: 1100
Number of 32-bit ASNs allocated by the RIRs: 47254
Number of 32-bit ASNs visible in the Routing Table: 38874
Prefixes from 32-bit ASNs in the Routing Table: 208721
Number of bogon 32-bit ASNs visible in the Routing Table: 101
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 429
Number of addresses announced to Internet: 3107437184
Equivalent to 185 /8s, 55 /16s and 186 /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: 325111
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 266044
Total APNIC prefixes after maximum aggregation: 79297
APNIC Deaggregation factor: 3.36
Prefixes being announced from the APNIC address blocks: 256536
Unique aggregates announced from the APNIC address blocks: 105255
APNIC Region origin ASes present in the Internet Routing Table: 14826
APNIC Prefixes per ASN: 17.30
APNIC Region origin ASes announcing only one prefix: 4529
APNIC Region transit ASes present in the Internet Routing Table: 1988
Average APNIC Region AS path length visible: 5.5
Max APNIC Region AS path length visible: 39
Number of APNIC region 32-bit ASNs visible in the Routing Table: 10340
Number of APNIC addresses announced to Internet: 750478848
Equivalent to 44 /8s, 187 /16s and 102 /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: 292382
Total ARIN prefixes after maximum aggregation: 133085
ARIN Deaggregation factor: 2.20
Prefixes being announced from the ARIN address blocks: 294134
Unique aggregates announced from the ARIN address blocks: 142112
ARIN Region origin ASes present in the Internet Routing Table: 19293
ARIN Prefixes per ASN: 15.25
ARIN Region origin ASes announcing only one prefix: 7054
ARIN Region transit ASes present in the Internet Routing Table: 2002
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 35
Number of ARIN region 32-bit ASNs visible in the Routing Table: 5301
Number of ARIN addresses announced to Internet: 1349029888
Equivalent to 80 /8s, 104 /16s and 144 /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: 278008
Total RIPE prefixes after maximum aggregation: 137148
RIPE Deaggregation factor: 2.03
Prefixes being announced from the RIPE address blocks: 277172
Unique aggregates announced from the RIPE address blocks: 179210
RIPE Region origin ASes present in the Internet Routing Table: 29048
RIPE Prefixes per ASN: 9.54
RIPE Region origin ASes announcing only one prefix: 12098
RIPE Region transit ASes present in the Internet Routing Table: 4030
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 49
Number of RIPE region 32-bit ASNs visible in the Routing Table: 12670
Number of RIPE addresses announced to Internet: 732367232
Equivalent to 43 /8s, 167 /16s and 9 /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: 124554
Total LACNIC prefixes after maximum aggregation: 30140
LACNIC Deaggregation factor: 4.13
Prefixes being announced from the LACNIC address blocks: 120783
Unique aggregates announced from the LACNIC address blocks: 49322
LACNIC Region origin ASes present in the Internet Routing Table: 11280
LACNIC Prefixes per ASN: 10.71
LACNIC Region origin ASes announcing only one prefix: 2649
LACNIC Region transit ASes present in the Internet Routing Table: 2559
Average LACNIC Region AS path length visible: 6.0
Max LACNIC Region AS path length visible: 37
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9246
Number of LACNIC addresses announced to Internet: 170809856
Equivalent to 10 /8s, 46 /16s and 90 /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: 34805
Total AfriNIC prefixes after maximum aggregation: 6788
AfriNIC Deaggregation factor: 5.13
Prefixes being announced from the AfriNIC address blocks: 47801
Unique aggregates announced from the AfriNIC address blocks: 15776
AfriNIC Region origin ASes present in the Internet Routing Table: 1954
AfriNIC Prefixes per ASN: 24.46
AfriNIC Region origin ASes announcing only one prefix: 713
AfriNIC Region transit ASes present in the Internet Routing Table: 388
Average AfriNIC Region AS path length visible: 6.1
Max AfriNIC Region AS path length visible: 59
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1317
Number of AfriNIC addresses announced to Internet: 104509952
Equivalent to 6 /8s, 58 /16s and 178 /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 12986 8762 117 CHINAMOBILE-CN China Mobile Communication
7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4804 4192 76 ERX-CERNET-BKB China Education and Resear
9498 4468 536 312 BBIL-AP BHARTI Airtel Ltd., IN
7552 3939 1332 27 VIETEL-AS-AP Viettel Group, VN
7713 3658 1043 70 TELKOMNET-AS-AP PT Telekomunikasi Indones
45899 3305 1869 101 VNPT-AS-VN VNPT Corp, VN
56046 2977 812 181 CMNET-JIANGSU-AP China Mobile communicati
24560 2923 865 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd.,
4766 2291 11517 589 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 13961 40848 5362 AMAZON-02, US
11492 4742 314 779 CABLEONE, US
7155 3859 286 85 VIASAT-SP-BACKBONE, US
6327 3649 1320 82 SHAW, CA
22773 3332 3030 159 ASN-CXA-ALL-CCI-22773-RDC, US
749 3222 54766 2473 DNIC-AS-00749, US
396982 3219 3857 437 GOOGLE-CLOUD-PLATFORM, US
174 3190 8759 844 COGENT-174, US
4155 2954 230 1747 USDA-1, US
16625 2912 1230 2167 AKAMAI-AS, 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 7539 1711 150 UNI2-AS, ES
39891 4798 293 63 ALJAWWALSTC-AS, SA
20940 3909 3395 127 AKAMAI-ASN1, NL
9009 3868 366 2188 M247, RO
12389 3122 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical
34984 2404 361 585 TELLCOM-AS, TR
212238 2335 166 1703 CDNEXT, GB
203020 1795 220 827 HOSTROYALE, IN
13188 1606 100 34 TRIOLAN, UA
8452 1601 1852 14 TE-AS TE-AS, EG
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 12277 3270 570 UNINET, MX
10620 3483 472 1054 Telmex Colombia S.A., CO
13999 2527 511 351 Mega Cable, S.A. de C.V., MX
11830 1988 369 64 Instituto Costarricense de Electricidad y
28573 1369 2432 266 Claro NXT Telecomunicacoes Ltda, BR
3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC,
11664 1227 278 33 Techtel LMDS Comunicaciones Interactivas
6147 1182 371 22 Telefonica del Peru S.A.A., PE
22884 1054 67 377 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M
26615 1019 2487 55 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
24835 1770 660 28 RAYA-AS, EG
29571 1499 94 32 ORANGE-COTE-IVOIRE, CI
36992 1420 1495 374 ETISALAT-MISR, EG
36903 1249 554 96 MT-MPLS, MA
24863 1241 389 20 LINKdotNET-AS, EG
37069 1085 1096 13 MOBINIL, EG
36935 991 523 46 Vodafone-, EG
20011 576 154 212 INTERNET-SOLUTIONS, ZA
36914 563 82 3 KENET-AS, KE
15399 543 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 13961 40848 5362 AMAZON-02, US
9808 12986 8762 117 CHINAMOBILE-CN China Mobile Communication
8151 12277 3270 570 UNINET, MX
12479 7539 1711 150 UNI2-AS, ES
7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4804 4192 76 ERX-CERNET-BKB China Education and Resear
39891 4798 293 63 ALJAWWALSTC-AS, SA
11492 4742 314 779 CABLEONE, US
9498 4468 536 312 BBIL-AP BHARTI Airtel Ltd., IN
7552 3939 1332 27 VIETEL-AS-AP Viettel Group, VN
Complete listing at https://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
9808 12986 12869 CHINAMOBILE-CN China Mobile Communications Grou
8151 12277 11707 UNINET, MX
12479 7539 7389 UNI2-AS, ES
7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU
39891 4798 4735 ALJAWWALSTC-AS, SA
4538 4804 4728 ERX-CERNET-BKB China Education and Research Net
9498 4468 4156 BBIL-AP BHARTI Airtel Ltd., IN
11492 4742 3963 CABLEONE, US
7552 3939 3912 VIETEL-AS-AP Viettel Group, VN
20940 3909 3782 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
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
396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US
393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US
396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, 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
395195 UNALLOCATED 8.38.115.0/24 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
/13:578 /14:1199 /15:2128 /16:13785 /17:8278 /18:13555
/19:24797 /20:44862 /21:52364 /22:112578 /23:103197 /24:618281
/25:792 /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 6500 7539 UNI2-AS, ES
8151 6486 12277 UNINET, MX
11492 3555 4742 CABLEONE, US
39891 3489 4798 ALJAWWALSTC-AS, SA
6327 3445 3649 SHAW, CA
7155 2818 3859 VIASAT-SP-BACKBONE, US
22773 2492 3332 ASN-CXA-ALL-CCI-22773-RDC, US
16509 2372 13961 AMAZON-02, US
30036 2315 2658 MEDIACOM-ENTERPRISE-BUSINESS, US
10620 2203 3483 Telmex Colombia S.A., CO
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1775 2:1512 3:920 4:10 5:4749 6:158
7:6 8:1567 9:3 11:172 12:1256 13:476
14:2634 15:384 16:285 17:380 18:900 20:564
21:4 22:188 23:7826 24:2658 25:2 27:2757
29:19 31:3369 32:32 33:1 34:81 35:263
36:4292 37:4575 38:9260 39:986 40:261 41:4240
42:939 43:2687 44:378 45:18820 46:5107 47:341
49:1968 50:2059 51:592 52:1560 54:335 55:1112
56:11 57:288 58:2160 59:1341 60:1179 61:2873
62:3022 63:1783 64:5600 65:2145 66:4816 67:3095
68:1071 69:3901 70:1039 71:631 72:2859 74:2810
75:1506 76:606 77:2783 78:1894 79:1735 80:2245
81:2086 82:3247 83:1449 84:1922 85:3480 86:1126
87:2387 88:1318 89:4474 90:776 91:8411 92:2758
93:2973 94:4146 95:4438 96:1445 97:311 98:953
99:705 100:71 101:1218 102:3904 103:32273 104:5291
105:765 106:876 107:2648 108:1272 109:4195 110:2247
111:3648 112:2478 113:1604 114:1977 115:2160 116:2066
117:2702 118:2520 119:1949 120:2228 121:1383 122:2828
123:2229 124:1729 125:2917 126:91 128:1588 129:970
130:1300 131:2062 132:784 133:460 134:1617 135:357
136:1478 137:1175 138:2830 139:1596 140:1611 141:1537
142:1917 143:1995 144:1206 145:587 146:2187 147:2103
148:2711 149:3014 150:1253 151:2377 152:2113 153:568
154:7394 155:1921 156:3304 157:1951 158:1390 159:2545
160:3593 161:1920 162:3902 163:2275 164:1885 165:2494
166:1553 167:2058 168:3887 169:767 170:5244 171:997
172:4248 173:3416 174:906 175:1316 176:3788 177:4802
178:3987 179:2323 180:2589 181:4178 182:3607 183:2029
184:2069 185:21630 186:5326 187:4596 188:4298 189:4363
190:9419 191:1542 192:11367 193:9482 194:7807 195:5650
196:3301 197:3227 198:6248 199:8648 200:8214 201:6364
202:10621 203:10602 204:4600 205:3671 206:4527 207:3642
208:4286 209:5181 210:4922 211:2739 212:4628 213:3835
214:1041 215:51 216:6793 217:3299 218:1489 219:565
220:2139 221:1209 222:868 223:2827
End of report
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