[sdnog] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Mar 20 20:03:39 SAST 2026
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 21 Mar, 2026
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: 1042066
Prefixes after maximum aggregation (per Origin AS): 399465
Deaggregation factor: 2.61
Unique aggregates announced (without unneeded subnets): 511843
Number of IPv4 prefixes with a valid ROA: 623754
Number of IPv4 prefixes with an invalid ROA: 1559
Number of IPv4 prefixes with no ROA: 416753
Total ASes present in the Internet Routing Table: 78187
Prefixes per ASN: 13.33
Origin-only ASes present in the Internet Routing Table: 67185
Origin ASes announcing only one prefix: 27305
Transit ASes present in the Internet Routing Table: 11002
Transit-only ASes present in the Internet Routing Table: 564
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 69
Max AS path prepend of ASN (269326) 61
Prefixes from unregistered ASNs in the Routing Table: 1071
Number of instances of unregistered ASNs: 1113
Number of 32-bit ASNs allocated by the RIRs: 49047
Number of 32-bit ASNs visible in the Routing Table: 40177
Prefixes from 32-bit ASNs in the Routing Table: 225002
Number of bogon 32-bit ASNs visible in the Routing Table: 122
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 397
Number of addresses announced to Internet: 3108301696
Equivalent to 185 /8s, 68 /16s and 235 /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: 338800
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 285944
Total APNIC prefixes after maximum aggregation: 82546
APNIC Deaggregation factor: 3.46
Prefixes being announced from the APNIC address blocks: 273114
Unique aggregates announced from the APNIC address blocks: 106992
APNIC Region origin ASes present in the Internet Routing Table: 15156
APNIC Prefixes per ASN: 18.02
APNIC Region origin ASes announcing only one prefix: 4653
APNIC Region transit ASes present in the Internet Routing Table: 2008
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 32
Number of APNIC region 32-bit ASNs visible in the Routing Table: 10701
Number of APNIC addresses announced to Internet: 752801408
Equivalent to 44 /8s, 222 /16s and 214 /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: 305107
Total ARIN prefixes after maximum aggregation: 137282
ARIN Deaggregation factor: 2.22
Prefixes being announced from the ARIN address blocks: 303800
Unique aggregates announced from the ARIN address blocks: 146997
ARIN Region origin ASes present in the Internet Routing Table: 19412
ARIN Prefixes per ASN: 15.65
ARIN Region origin ASes announcing only one prefix: 7072
ARIN Region transit ASes present in the Internet Routing Table: 1919
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 26
Number of ARIN region 32-bit ASNs visible in the Routing Table: 5525
Number of ARIN addresses announced to Internet: 1348976896
Equivalent to 80 /8s, 103 /16s and 193 /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, 393216-404380
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: 286169
Total RIPE prefixes after maximum aggregation: 141253
RIPE Deaggregation factor: 2.03
Prefixes being announced from the RIPE address blocks: 288835
Unique aggregates announced from the RIPE address blocks: 187739
RIPE Region origin ASes present in the Internet Routing Table: 29335
RIPE Prefixes per ASN: 9.85
RIPE Region origin ASes announcing only one prefix: 12154
RIPE Region transit ASes present in the Internet Routing Table: 3974
Average RIPE Region AS path length visible: 4.8
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 13182
Number of RIPE addresses announced to Internet: 732510592
Equivalent to 43 /8s, 169 /16s and 57 /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: 126899
Total LACNIC prefixes after maximum aggregation: 30718
LACNIC Deaggregation factor: 4.13
Prefixes being announced from the LACNIC address blocks: 122592
Unique aggregates announced from the LACNIC address blocks: 50258
LACNIC Region origin ASes present in the Internet Routing Table: 11373
LACNIC Prefixes per ASN: 10.78
LACNIC Region origin ASes announcing only one prefix: 2694
LACNIC Region transit ASes present in the Internet Routing Table: 2544
Average LACNIC Region AS path length visible: 5.4
Max LACNIC Region AS path length visible: 69
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9390
Number of LACNIC addresses announced to Internet: 170425984
Equivalent to 10 /8s, 40 /16s and 126 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-275868 + 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: 36876
Total AfriNIC prefixes after maximum aggregation: 6966
AfriNIC Deaggregation factor: 5.29
Prefixes being announced from the AfriNIC address blocks: 53328
Unique aggregates announced from the AfriNIC address blocks: 19509
AfriNIC Region origin ASes present in the Internet Routing Table: 2015
AfriNIC Prefixes per ASN: 26.47
AfriNIC Region origin ASes announcing only one prefix: 732
AfriNIC Region transit ASes present in the Internet Routing Table: 390
Average AfriNIC Region AS path length visible: 5.3
Max AfriNIC Region AS path length visible: 53
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1379
Number of AfriNIC addresses announced to Internet: 103332864
Equivalent to 6 /8s, 40 /16s and 188 /24s
AfriNIC AS Blocks 36864-37887, 327680-330751 & 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 13849 8945 105 CHINAMOBILE-CN China Mobile Communication
7545 5942 829 515 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 5030 4193 77 ERX-CERNET-BKB China Education and Resear
9498 4872 548 322 BBIL-AP BHARTI Airtel Ltd., IN
18403 4553 347 25 FPT-AS-AP FPT Telecom Company, VN
7552 4032 1332 29 VIETEL-AS-AP Viettel Group, VN
7713 3676 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones
56046 3476 887 178 CMNET-JIANGSU-AP China Mobile communicati
45899 3344 1868 99 VNPT-AS-VN VNPT Corp, VN
24560 3011 862 515 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd.,
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 14500 41222 5582 AMAZON-02 - Amazon.com, Inc., US
22773 4780 3118 369 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica
11492 4647 308 1020 CABLEONE - CABLE ONE, INC., US
7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US
6327 3711 1321 75 SHAW - Shaw Communications, CA
396982 3291 4856 485 GOOGLE-CLOUD-PLATFORM - Google LLC, US
174 3271 8766 848 COGENT-174 - Cogent Communications, LLC,
749 3140 54728 2391 DNIC-AS-00749 - United States Department
36352 2704 222 888 AS-COLOCROSSING - HostPapa, US
16625 2695 1178 2093 AKAMAI-AS - Akamai Technologies, Inc., 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 7204 1711 149 UNI2-AS, ES
39891 4969 306 72 ALJAWWALSTC-AS, SA
9009 3831 355 2248 M247, RO
20940 3822 3389 110 AKAMAI-ASN1, NL
12389 3199 2321 869 ROSTELECOM-AS PJSC Rostelecom. Technical
212238 2680 194 1963 CDNEXT, GB
34984 2463 366 569 TELLCOM-AS, TR
8452 1701 1852 17 TE-AS TE-AS, EG
203020 1635 247 806 HOSTROYALE, IN
13188 1607 100 27 TRIOLAN, UA
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 12817 3301 596 UNINET, MX
10620 3453 458 1104 Telmex Colombia S.A., CO
13999 2461 506 344 Mega Cable, S.A. de C.V., MX
11830 1914 369 65 Instituto Costarricense de Electricidad y
11664 1451 278 33 Techtel LMDS Comunicaciones Interactivas
28573 1372 2430 272 Claro NXT Telecomunicacoes Ltda, BR
3816 1341 770 214 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC,
6147 1244 371 22 INTEGRATEL PERU S.A.A., PE
26615 1057 2475 94 TIM SA, BR
22884 1056 67 358 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 2045 648 34 RAYA-AS, EG
36992 1843 1531 336 ETISALAT-MISR, EG
24863 1288 389 16 LINKdotNET-AS, EG
36903 1232 555 98 MT-MPLS, MA
36935 1229 521 44 Vodafone-, EG
37069 1109 1100 11 MOBINIL, EG
29571 1072 78 20 ORANGE-COTE-IVOIRE, CI
20011 586 155 217 NTT-DATA-Inc, ZA
15399 558 58 61 WANANCHI-, KE
36914 540 82 3 KENET-AS, 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 14500 41222 5582 AMAZON-02 - Amazon.com, Inc., US
9808 13849 8945 105 CHINAMOBILE-CN China Mobile Communication
8151 12817 3301 596 UNINET, MX
12479 7204 1711 149 UNI2-AS, ES
7545 5942 829 515 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 5030 4193 77 ERX-CERNET-BKB China Education and Resear
39891 4969 306 72 ALJAWWALSTC-AS, SA
9498 4872 548 322 BBIL-AP BHARTI Airtel Ltd., IN
22773 4780 3118 369 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica
11492 4647 308 1020 CABLEONE - CABLE ONE, INC., US
Complete listing at https://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
9808 13849 13744 CHINAMOBILE-CN China Mobile Communications Grou
8151 12817 12221 UNINET, MX
12479 7204 7055 UNI2-AS, ES
7545 5942 5427 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 5030 4953 ERX-CERNET-BKB China Education and Research Net
39891 4969 4897 ALJAWWALSTC-AS, SA
9498 4872 4550 BBIL-AP BHARTI Airtel Ltd., IN
18403 4553 4528 FPT-AS-AP FPT Telecom Company, VN
22773 4780 4411 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications
7552 4032 4003 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
393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887 - C
396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent
394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos
395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent
1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent
13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com
26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI
396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En
397665 UNALLOCATED 12.24.28.0/24 7018 ATT-INTERNET4 - AT&T En
395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En
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 - Hurricane Electric LLC, US
Complete listing at https://thyme.apnic.net/current/data-spar
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
23.137.48.0/24 Origin: 16904 ARVIG-16904 - Arvig Enterprises Inc., US
23.137.48.0/24 Transit: 3257 GTT-BACKBONE GTT, US
23.137.200.0/24 Origin: 16276 OVH, FR
23.137.200.0/24 Transit: 2516 KDDI KDDI CORPORATION, JP
23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US
23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US
23.141.0.0/24 Origin: 395350 RESERVED, ZZ
23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat
23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA
23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, 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 /10:40 /11:95 /12:297
/13:582 /14:1193 /15:2091 /16:13629 /17:8371 /18:13386
/19:25653 /20:46863 /21:52919 /22:114360 /23:107905 /24:653961
/25:691 /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 6978 12817 UNINET, MX
12479 6145 7204 UNI2-AS, ES
39891 3655 4969 ALJAWWALSTC-AS, SA
11492 3507 4647 CABLEONE - CABLE ONE, INC., US
6327 3491 3711 SHAW - Shaw Communications, CA
22773 3048 4780 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US
16509 2606 14500 AMAZON-02 - Amazon.com, Inc., US
30036 2317 2666 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
10620 2233 3453 Telmex Colombia S.A., CO
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2518 2:1674 3:1003 4:5 5:5156 6:192
7:6 8:1523 9:38 11:172 12:1197 13:655
14:2709 15:459 16:169 17:422 18:917 20:582
21:4 22:188 23:8219 24:2844 25:2 27:2750
28:1 29:19 31:3408 32:35 34:87 35:294
36:4637 37:4485 38:9987 39:1275 40:412 41:4563
42:2212 43:2989 44:444 45:19881 46:4896 47:410
48:100 49:2196 50:2076 51:614 52:1304 54:276
55:1120 56:11 57:319 58:2420 59:1434 60:1175
61:3127 62:3121 63:1753 64:6258 65:2131 66:6027
67:3260 68:1505 69:4221 70:1057 71:617 72:3144
74:3010 75:1499 76:595 77:2885 78:1938 79:1798
80:2355 81:2203 82:4011 83:1446 84:2094 85:3823
86:1103 87:2445 88:1360 89:4699 90:799 91:8428
92:2844 93:3010 94:4322 95:4667 96:1442 97:315
98:947 99:803 100:68 101:1358 102:4483 103:32416
104:5473 105:813 106:926 107:2852 108:1238 109:4215
110:2296 111:4163 112:3165 113:1982 114:2266 115:2238
116:2172 117:3490 118:2949 119:2115 120:2714 121:1589
122:2995 123:2266 124:1716 125:3012 126:125 128:1673
129:976 130:1613 131:2465 132:811 133:463 134:1648
135:595 136:1593 137:1410 138:3172 139:1634 140:1821
141:1606 142:2549 143:2149 144:1746 145:627 146:2207
147:2145 148:2730 149:3063 150:1202 151:2706 152:2313
153:953 154:9522 155:2313 156:4386 157:2266 158:1507
159:2801 160:3814 161:1956 162:4028 163:2430 164:2037
165:2625 166:1309 167:2251 168:3994 169:894 170:5529
171:1108 172:4600 173:3470 174:887 175:1356 176:3835
177:4795 178:4328 179:2290 180:3071 181:4468 182:3996
183:2825 184:2014 185:21820 186:5720 187:4937 188:4567
189:4511 190:9767 191:1562 192:11527 193:9612 194:7867
195:5757 196:3322 197:3233 198:6304 199:6119 200:8231
201:6348 202:10903 203:10567 204:4752 205:3778 206:4523
207:4023 208:4385 209:5465 210:4996 211:2783 212:5006
213:4126 214:1059 215:46 216:7259 217:3546 218:1747
219:589 220:2202 221:1309 222:1074 223:3403
End of report
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