[SANOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Aug 15 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 16 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: 995406
Prefixes after maximum aggregation (per Origin AS): 386302
Deaggregation factor: 2.58
Unique aggregates announced (without unneeded subnets): 489519
Number of IPv4 prefixes with a valid ROA: 557114
Number of IPv4 prefixes with an invalid ROA: 1155
Number of IPv4 prefixes with no ROA: 437137
Total ASes present in the Internet Routing Table: 77277
Prefixes per ASN: 12.88
Origin-only ASes present in the Internet Routing Table: 66106
Origin ASes announcing only one prefix: 27026
Transit ASes present in the Internet Routing Table: 11171
Transit-only ASes present in the Internet Routing Table: 561
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: 1116
Number of instances of unregistered ASNs: 1157
Number of 32-bit ASNs allocated by the RIRs: 47181
Number of 32-bit ASNs visible in the Routing Table: 38836
Prefixes from 32-bit ASNs in the Routing Table: 207898
Number of bogon 32-bit ASNs visible in the Routing Table: 109
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 426
Number of addresses announced to Internet: 3108190336
Equivalent to 185 /8s, 67 /16s and 56 /24s
Percentage of available address space announced: 84.0
Percentage of allocated address space announced: 84.0
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: 324777
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 265393
Total APNIC prefixes after maximum aggregation: 79064
APNIC Deaggregation factor: 3.36
Prefixes being announced from the APNIC address blocks: 256207
Unique aggregates announced from the APNIC address blocks: 105236
APNIC Region origin ASes present in the Internet Routing Table: 14815
APNIC Prefixes per ASN: 17.29
APNIC Region origin ASes announcing only one prefix: 4539
APNIC Region transit ASes present in the Internet Routing Table: 1978
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: 10330
Number of APNIC addresses announced to Internet: 750151424
Equivalent to 44 /8s, 182 /16s and 103 /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: 292077
Total ARIN prefixes after maximum aggregation: 132815
ARIN Deaggregation factor: 2.20
Prefixes being announced from the ARIN address blocks: 293714
Unique aggregates announced from the ARIN address blocks: 141892
ARIN Region origin ASes present in the Internet Routing Table: 19276
ARIN Prefixes per ASN: 15.24
ARIN Region origin ASes announcing only one prefix: 7042
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: 5295
Number of ARIN addresses announced to Internet: 1349261824
Equivalent to 80 /8s, 108 /16s and 26 /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: 277570
Total RIPE prefixes after maximum aggregation: 136985
RIPE Deaggregation factor: 2.03
Prefixes being announced from the RIPE address blocks: 276630
Unique aggregates announced from the RIPE address blocks: 178781
RIPE Region origin ASes present in the Internet Routing Table: 29022
RIPE Prefixes per ASN: 9.53
RIPE Region origin ASes announcing only one prefix: 12080
RIPE Region transit ASes present in the Internet Routing Table: 4038
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: 12642
Number of RIPE addresses announced to Internet: 732274304
Equivalent to 43 /8s, 165 /16s and 158 /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: 124536
Total LACNIC prefixes after maximum aggregation: 29889
LACNIC Deaggregation factor: 4.17
Prefixes being announced from the LACNIC address blocks: 120801
Unique aggregates announced from the LACNIC address blocks: 49074
LACNIC Region origin ASes present in the Internet Routing Table: 11281
LACNIC Prefixes per ASN: 10.71
LACNIC Region origin ASes announcing only one prefix: 2657
LACNIC Region transit ASes present in the Internet Routing Table: 2570
Average LACNIC Region AS path length visible: 6.0
Max LACNIC Region AS path length visible: 56
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9253
Number of LACNIC addresses announced to Internet: 171093248
Equivalent to 10 /8s, 50 /16s and 173 /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: 34714
Total AfriNIC prefixes after maximum aggregation: 6813
AfriNIC Deaggregation factor: 5.10
Prefixes being announced from the AfriNIC address blocks: 47628
Unique aggregates announced from the AfriNIC address blocks: 14161
AfriNIC Region origin ASes present in the Internet Routing Table: 1955
AfriNIC Prefixes per ASN: 24.36
AfriNIC Region origin ASes announcing only one prefix: 708
AfriNIC Region transit ASes present in the Internet Routing Table: 383
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: 1316
Number of AfriNIC addresses announced to Internet: 105167872
Equivalent to 6 /8s, 68 /16s and 188 /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 12936 8762 117 CHINAMOBILE-CN China Mobile Communication
7545 6138 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4803 4192 76 ERX-CERNET-BKB China Education and Resear
9498 4466 536 311 BBIL-AP BHARTI Airtel Ltd., IN
7552 3962 1332 27 VIETEL-AS-AP Viettel Group, VN
7713 3698 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones
45899 3305 1869 101 VNPT-AS-VN VNPT Corp, VN
56046 2974 812 181 CMNET-JIANGSU-AP China Mobile communicati
24560 2923 865 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd.,
4766 2302 11519 605 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 13804 41097 5327 AMAZON-02, US
11492 4733 314 786 CABLEONE, US
7155 3859 286 85 VIASAT-SP-BACKBONE, US
6327 3646 1320 82 SHAW, CA
22773 3341 3029 164 ASN-CXA-ALL-CCI-22773-RDC, US
174 3280 8769 857 COGENT-174, US
749 3222 54766 2473 DNIC-AS-00749, US
396982 3215 3858 436 GOOGLE-CLOUD-PLATFORM, US
4155 2939 229 1740 USDA-1, US
16625 2913 1224 2165 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 7554 1711 149 UNI2-AS, ES
39891 4798 293 63 ALJAWWALSTC-AS, SA
20940 3912 3395 127 AKAMAI-ASN1, NL
9009 3859 366 2176 M247, RO
12389 3119 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical
34984 2403 361 584 TELLCOM-AS, TR
212238 2331 165 1695 CDNEXT, GB
203020 1633 208 770 HOSTROYALE, IN
13188 1605 100 37 TRIOLAN, UA
8452 1585 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 12314 3248 585 UNINET, MX
10620 3481 472 1050 Telmex Colombia S.A., CO
13999 2525 511 349 Mega Cable, S.A. de C.V., MX
11830 1982 369 64 Instituto Costarricense de Electricidad y
28573 1371 2433 261 Claro NXT Telecomunicacoes Ltda, BR
3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC,
11664 1228 278 33 Techtel LMDS Comunicaciones Interactivas
6147 1184 371 22 Telefonica del Peru S.A.A., PE
22884 1055 67 375 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M
26615 1017 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 1421 1501 377 ETISALAT-MISR, EG
36903 1249 554 96 MT-MPLS, MA
24863 1243 389 20 LINKdotNET-AS, EG
37069 1086 1112 11 MOBINIL, EG
36935 990 522 45 Vodafone-, EG
20011 576 154 212 INTERNET-SOLUTIONS, ZA
36914 572 82 3 KENET-AS, KE
15399 536 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 13804 41097 5327 AMAZON-02, US
9808 12936 8762 117 CHINAMOBILE-CN China Mobile Communication
8151 12314 3248 585 UNINET, MX
12479 7554 1711 149 UNI2-AS, ES
7545 6138 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4803 4192 76 ERX-CERNET-BKB China Education and Resear
39891 4798 293 63 ALJAWWALSTC-AS, SA
11492 4733 314 786 CABLEONE, US
9498 4466 536 311 BBIL-AP BHARTI Airtel Ltd., IN
7552 3962 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 12936 12819 CHINAMOBILE-CN China Mobile Communications Grou
8151 12314 11729 UNINET, MX
12479 7554 7405 UNI2-AS, ES
7545 6138 5522 TPG-INTERNET-AP TPG Telecom Limited, AU
39891 4798 4735 ALJAWWALSTC-AS, SA
4538 4803 4727 ERX-CERNET-BKB China Education and Research Net
9498 4466 4155 BBIL-AP BHARTI Airtel Ltd., IN
11492 4733 3947 CABLEONE, US
7552 3962 3935 VIETEL-AS-AP Viettel Group, VN
20940 3912 3785 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
32182 UNALLOCATED 8.9.96.0/23 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
396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, 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 3356 LEVEL3, 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: 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
/13:579 /14:1200 /15:2131 /16:13811 /17:8275 /18:13563
/19:24757 /20:44808 /21:52302 /22:112562 /23:103172 /24:616994
/25:791 /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
8151 6544 12314 UNINET, MX
12479 6514 7554 UNI2-AS, ES
11492 3552 4733 CABLEONE, US
39891 3489 4798 ALJAWWALSTC-AS, SA
6327 3442 3646 SHAW, CA
7155 2818 3859 VIASAT-SP-BACKBONE, US
22773 2495 3341 ASN-CXA-ALL-CCI-22773-RDC, US
16509 2367 13804 AMAZON-02, US
30036 2297 2640 MEDIACOM-ENTERPRISE-BUSINESS, US
10620 2201 3481 Telmex Colombia S.A., CO
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1773 2:1501 3:885 4:10 5:4712 6:158
7:6 8:1562 9:3 11:172 12:1255 13:456
14:2623 15:377 16:285 17:379 18:901 20:564
21:4 22:188 23:7774 24:2656 25:2 27:2740
29:19 31:3361 32:32 33:1 34:80 35:263
36:4272 37:4566 38:9383 39:984 40:263 41:4280
42:938 43:2680 44:380 45:18662 46:5119 47:339
49:1935 50:2051 51:591 52:1548 54:321 55:1088
56:11 57:279 58:2149 59:1346 60:1176 61:2890
62:3015 63:1784 64:5581 65:2143 66:4788 67:3092
68:1076 69:3899 70:1039 71:630 72:2849 74:2816
75:1506 76:607 77:2773 78:1892 79:1735 80:2226
81:2071 82:3255 83:1437 84:1924 85:3455 86:1122
87:2394 88:1321 89:4457 90:775 91:8409 92:2758
93:2962 94:4141 95:4438 96:1445 97:311 98:958
99:709 100:71 101:1212 102:3899 103:32222 104:5270
105:742 106:875 107:2644 108:1276 109:4190 110:2244
111:3644 112:2456 113:1578 114:1977 115:2152 116:2070
117:2690 118:2519 119:1940 120:2222 121:1385 122:2824
123:2230 124:1725 125:2913 126:91 128:1600 129:978
130:1297 131:2059 132:781 133:450 134:1613 135:356
136:1470 137:1185 138:2830 139:1595 140:1620 141:1535
142:1914 143:1982 144:1172 145:575 146:2182 147:2105
148:2697 149:2983 150:1266 151:2336 152:2108 153:528
154:7559 155:1880 156:3100 157:1940 158:1379 159:2529
160:3593 161:1907 162:3895 163:2261 164:1878 165:2463
166:1544 167:2044 168:3896 169:783 170:5220 171:1004
172:4229 173:3389 174:905 175:1315 176:3748 177:4746
178:3991 179:2321 180:2590 181:4176 182:3591 183:2028
184:2068 185:21607 186:5229 187:4667 188:4275 189:4335
190:9521 191:1531 192:11345 193:9490 194:7800 195:5633
196:3293 197:3217 198:6230 199:8646 200:8220 201:6377
202:10622 203:10604 204:4605 205:3661 206:4560 207:3645
208:4284 209:5181 210:4919 211:2729 212:4617 213:3840
214:1038 215:51 216:6795 217:3301 218:1484 219:566
220:2139 221:1209 222:874 223:2818
End of report
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