[SANOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri May 16 18:02:22 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 17 May, 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: 984171
Prefixes after maximum aggregation (per Origin AS): 379546
Deaggregation factor: 2.59
Unique aggregates announced (without unneeded subnets): 479725
Number of IPv4 prefixes with a valid ROA: 540162
Number of IPv4 prefixes with an invalid ROA: 1320
Number of IPv4 prefixes with no ROA: 442689
Total ASes present in the Internet Routing Table: 76906
Prefixes per ASN: 12.80
Origin-only ASes present in the Internet Routing Table: 65830
Origin ASes announcing only one prefix: 26957
Transit ASes present in the Internet Routing Table: 11076
Transit-only ASes present in the Internet Routing Table: 554
Average AS path length visible in the Internet Routing Table: 5.2
Max AS path length visible: 156
Max AS path prepend of ASN (153737) 150
Prefixes from unregistered ASNs in the Routing Table: 996
Number of instances of unregistered ASNs: 1007
Number of 32-bit ASNs allocated by the RIRs: 46439
Number of 32-bit ASNs visible in the Routing Table: 38270
Prefixes from 32-bit ASNs in the Routing Table: 203102
Number of bogon 32-bit ASNs visible in the Routing Table: 41
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 467
Number of addresses announced to Internet: 3109587584
Equivalent to 185 /8s, 88 /16s and 138 /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: 322007
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 258563
Total APNIC prefixes after maximum aggregation: 77706
APNIC Deaggregation factor: 3.33
Prefixes being announced from the APNIC address blocks: 249835
Unique aggregates announced from the APNIC address blocks: 103180
APNIC Region origin ASes present in the Internet Routing Table: 14648
APNIC Prefixes per ASN: 17.06
APNIC Region origin ASes announcing only one prefix: 4460
APNIC Region transit ASes present in the Internet Routing Table: 1953
Average APNIC Region AS path length visible: 5.4
Max APNIC Region AS path length visible: 156
Number of APNIC region 32-bit ASNs visible in the Routing Table: 10138
Number of APNIC addresses announced to Internet: 749286144
Equivalent to 44 /8s, 169 /16s and 51 /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: 290311
Total ARIN prefixes after maximum aggregation: 130879
ARIN Deaggregation factor: 2.22
Prefixes being announced from the ARIN address blocks: 291540
Unique aggregates announced from the ARIN address blocks: 138855
ARIN Region origin ASes present in the Internet Routing Table: 19252
ARIN Prefixes per ASN: 15.14
ARIN Region origin ASes announcing only one prefix: 7034
ARIN Region transit ASes present in the Internet Routing Table: 2008
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: 5214
Number of ARIN addresses announced to Internet: 1352218112
Equivalent to 80 /8s, 153 /16s and 54 /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: 273874
Total RIPE prefixes after maximum aggregation: 134012
RIPE Deaggregation factor: 2.04
Prefixes being announced from the RIPE address blocks: 271875
Unique aggregates announced from the RIPE address blocks: 174522
RIPE Region origin ASes present in the Internet Routing Table: 28925
RIPE Prefixes per ASN: 9.40
RIPE Region origin ASes announcing only one prefix: 12078
RIPE Region transit ASes present in the Internet Routing Table: 4005
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 44
Number of RIPE region 32-bit ASNs visible in the Routing Table: 12444
Number of RIPE addresses announced to Internet: 731008128
Equivalent to 43 /8s, 146 /16s and 76 /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: 124897
Total LACNIC prefixes after maximum aggregation: 29520
LACNIC Deaggregation factor: 4.23
Prefixes being announced from the LACNIC address blocks: 120513
Unique aggregates announced from the LACNIC address blocks: 48848
LACNIC Region origin ASes present in the Internet Routing Table: 11250
LACNIC Prefixes per ASN: 10.71
LACNIC Region origin ASes announcing only one prefix: 2692
LACNIC Region transit ASes present in the Internet Routing Table: 2536
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: 9199
Number of LACNIC addresses announced to Internet: 171760896
Equivalent to 10 /8s, 60 /16s and 221 /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: 35530
Total AfriNIC prefixes after maximum aggregation: 6807
AfriNIC Deaggregation factor: 5.22
Prefixes being announced from the AfriNIC address blocks: 49941
Unique aggregates announced from the AfriNIC address blocks: 13922
AfriNIC Region origin ASes present in the Internet Routing Table: 1909
AfriNIC Prefixes per ASN: 26.16
AfriNIC Region origin ASes announcing only one prefix: 693
AfriNIC Region transit ASes present in the Internet Routing Table: 375
Average AfriNIC Region AS path length visible: 6.0
Max AfriNIC Region AS path length visible: 80
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1275
Number of AfriNIC addresses announced to Internet: 105096192
Equivalent to 6 /8s, 67 /16s and 164 /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 10997 8757 101 CHINAMOBILE-CN China Mobile Communication
7545 6163 842 652 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4784 4192 76 ERX-CERNET-BKB China Education and Resear
9498 4379 534 303 BBIL-AP BHARTI Airtel Ltd., IN
7552 3904 1332 26 VIETEL-AS-AP Viettel Group, VN
7713 3695 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones
45899 3275 1869 102 VNPT-AS-VN VNPT Corp, VN
24560 2866 852 548 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd.,
4766 2372 11522 628 KIXS-AS-KR Korea Telecom, KR
45090 2208 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 13382 40824 5011 AMAZON-02, US
11492 4727 313 592 CABLEONE, US
7155 3864 286 85 VIASAT-SP-BACKBONE, US
6327 3622 1320 81 SHAW, CA
174 3374 8746 877 COGENT-174, US
22773 3349 3032 168 ASN-CXA-ALL-CCI-22773-RDC, US
749 3243 54815 2494 DNIC-AS-00749, US
396982 3165 3851 417 GOOGLE-CLOUD-PLATFORM, US
16625 3034 1264 2227 AKAMAI-AS, US
36352 2791 228 853 AS-COLOCROSSING, 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 7697 1714 148 UNI2-AS, ES
39891 4797 293 62 ALJAWWALSTC-AS, SA
20940 3965 3395 127 AKAMAI-ASN1, NL
9009 3769 325 1955 M247, RO
12389 3075 2305 887 ROSTELECOM-AS PJSC Rostelecom. Technical
34984 2391 360 581 TELLCOM-AS, TR
212238 2140 150 1575 CDNEXT, GB
13188 1606 100 34 TRIOLAN, UA
8452 1585 1852 14 TE-AS TE-AS, EG
8551 1422 366 39 BEZEQ-INTERNATIONAL-AS Bezeqint Internet
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 12109 3247 583 UNINET, MX
10620 3500 480 1019 Telmex Colombia S.A., CO
13999 2519 540 364 Mega Cable, S.A. de C.V., MX
11830 1996 369 64 Instituto Costarricense de Electricidad y
28573 1358 2438 262 Claro NXT Telecomunicacoes Ltda, BR
3816 1338 785 210 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC,
11664 1204 278 33 Techtel LMDS Comunicaciones Interactivas
6147 1195 371 22 Telefonica del Peru S.A.A., PE
22884 1059 67 378 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M
262287 1048 83 226 Latitude.sh LTDA, 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 1778 632 28 RAYA-AS, EG
24863 1653 389 16 LINKdotNET-AS, EG
29571 1598 102 33 ORANGE-COTE-IVOIRE, CI
36992 1432 1519 280 ETISALAT-MISR, EG
36903 1250 554 97 MT-MPLS, MA
37069 1107 1100 18 MOBINIL, EG
36935 1040 523 45 Vodafone-, EG
20011 980 185 285 INTERNET-SOLUTIONS, ZA
36914 550 82 3 KENET-AS, KE
15399 541 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 13382 40824 5011 AMAZON-02, US
8151 12109 3247 583 UNINET, MX
9808 10997 8757 101 CHINAMOBILE-CN China Mobile Communication
12479 7697 1714 148 UNI2-AS, ES
7545 6163 842 652 TPG-INTERNET-AP TPG Telecom Limited, AU
39891 4797 293 62 ALJAWWALSTC-AS, SA
4538 4784 4192 76 ERX-CERNET-BKB China Education and Resear
11492 4727 313 592 CABLEONE, US
9498 4379 534 303 BBIL-AP BHARTI Airtel Ltd., IN
20940 3965 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
8151 12109 11526 UNINET, MX
9808 10997 10896 CHINAMOBILE-CN China Mobile Communications Grou
12479 7697 7549 UNI2-AS, ES
7545 6163 5511 TPG-INTERNET-AP TPG Telecom Limited, AU
39891 4797 4735 ALJAWWALSTC-AS, SA
4538 4784 4708 ERX-CERNET-BKB China Education and Research Net
11492 4727 4135 CABLEONE, US
9498 4379 4076 BBIL-AP BHARTI Airtel Ltd., IN
7552 3904 3878 VIETEL-AS-AP Viettel Group, VN
20940 3965 3838 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
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
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: 6939 HURRICANE, 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
23.147.240.0/24 Origin: 32302 RESERVED, ZZ
23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE
23.152.48.0/24 Origin: 46167 RESERVED, ZZ
23.152.48.0/24 Transit: 7018 ATT-INTERNET4, 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 /10:41 /11:92 /12:299
/13:580 /14:1213 /15:2145 /16:13988 /17:8331 /18:13773
/19:24830 /20:44699 /21:52107 /22:112211 /23:102045 /24:606987
/25:798 /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 6613 7697 UNI2-AS, ES
8151 6304 12109 UNINET, MX
11492 3533 4727 CABLEONE, US
39891 3489 4797 ALJAWWALSTC-AS, SA
6327 3417 3622 SHAW, CA
7155 2823 3864 VIASAT-SP-BACKBONE, US
22773 2499 3349 ASN-CXA-ALL-CCI-22773-RDC, US
16509 2329 13382 AMAZON-02, US
30036 2227 2567 MEDIACOM-ENTERPRISE-BUSINESS, US
10620 2186 3500 Telmex Colombia S.A., CO
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1711 2:1512 3:743 4:11 5:4652 6:163
7:6 8:1608 9:1 11:172 12:1366 13:417
14:2556 15:353 16:284 17:374 18:914 20:518
21:4 22:188 23:7538 24:2744 25:2 27:2693
29:19 31:3258 32:39 33:1 34:83 35:205
36:2907 37:4648 38:9140 39:910 40:169 41:4217
42:927 43:2561 44:383 45:18591 46:5049 47:303
49:1932 50:1894 51:591 52:1553 54:312 55:1089
56:11 57:257 58:2136 59:1362 60:1167 61:2791
62:2924 63:1816 64:5464 65:2171 66:4654 67:3063
68:1122 69:3845 70:1067 71:627 72:2825 74:2781
75:1612 76:620 77:2703 78:1878 79:1757 80:2215
81:2065 82:3117 83:1430 84:1865 85:3422 86:1071
87:2406 88:1290 89:4369 90:775 91:8345 92:2692
93:2895 94:4057 95:4298 96:1419 97:316 98:980
99:686 100:72 101:1176 102:3903 103:32237 104:5035
105:761 106:1034 107:2645 108:1227 109:4081 110:2242
111:3336 112:2075 113:1530 114:1975 115:2113 116:2051
117:2587 118:2347 119:1925 120:1940 121:1426 122:2768
123:2170 124:1621 125:2879 126:91 128:1597 129:965
130:1299 131:1968 132:784 133:451 134:1535 135:332
136:1342 137:1167 138:2894 139:1591 140:1597 141:1503
142:1902 143:1751 144:1115 145:506 146:2169 147:2106
148:2700 149:2863 150:1215 151:1902 152:2090 153:497
154:8042 155:1965 156:3337 157:1887 158:1311 159:2452
160:3823 161:1877 162:3740 163:2142 164:1700 165:2199
166:1485 167:1905 168:4279 169:792 170:5103 171:1007
172:4457 173:3287 174:917 175:1300 176:3699 177:4731
178:3623 179:2296 180:2622 181:4073 182:3430 183:1882
184:2067 185:21549 186:5128 187:4456 188:4248 189:4274
190:9544 191:1489 192:11254 193:9484 194:7777 195:5534
196:3280 197:3667 198:6203 199:8504 200:8222 201:6346
202:10480 203:10537 204:4557 205:3640 206:4513 207:3588
208:4261 209:5212 210:4838 211:2644 212:4545 213:3728
214:1029 215:48 216:6708 217:3131 218:1396 219:545
220:2092 221:1084 222:849 223:2408
End of report
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