IPv4 R&E Routing Table Report 21:35 GMT Thu 02 Apr, 2026 IPv4 BGP Table (Global) as seen at USP. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/USP/ Analysis Summary ---------------- BGP routing table entries examined: 1038123 Prefixes after maximum aggregation (per Origin AS): 398581 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511651 Number of IPv4 prefixes with a valid ROA: 626942 Number of IPv4 prefixes with an invalid ROA: 136 Number of IPv4 prefixes with no ROA: 411045 Total ASes present in the Internet Routing Table: 78251 Prefixes per ASN: 13.27 Origin-only ASes present in the Internet Routing Table: 66964 Origin ASes announcing only one prefix: 27325 Transit ASes present in the Internet Routing Table: 11287 Transit-only ASes present in the Internet Routing Table: 591 Paths with bogon ASNs present in the IPv4 Routing Table: 282 Average AS path length visible in the Internet Routing Table: 5.3 Max AS path length visible: 69 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 1133 Number of instances of unregistered ASNs: 1163 Number of 32-bit ASNs allocated by the RIRs: 49189 Number of 32-bit ASNs visible in the Routing Table: 40250 Prefixes from 32-bit ASNs in the Routing Table: 225771 Number of bogon 32-bit ASNs visible in the Routing Table: 82 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 409 Number of addresses announced to Internet: 3107541248 Equivalent to 185 /8s, 57 /16s and 81 /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: 338167 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282297 Total APNIC prefixes after maximum aggregation: 82383 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269318 Unique aggregates announced from the APNIC address blocks: 107243 APNIC Region origin ASes present in the Internet Routing Table: 15126 APNIC Prefixes per ASN: 17.80 APNIC Region origin ASes announcing only one prefix: 4637 APNIC Region transit ASes present in the Internet Routing Table: 2051 Average APNIC Region AS path length visible: 5.2 Max APNIC Region AS path length visible: 53 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10693 Number of APNIC addresses announced to Internet: 752838144 Equivalent to 44 /8s, 223 /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: 303569 Total ARIN prefixes after maximum aggregation: 135898 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 303100 Unique aggregates announced from the ARIN address blocks: 146591 ARIN Region origin ASes present in the Internet Routing Table: 19421 ARIN Prefixes per ASN: 15.61 ARIN Region origin ASes announcing only one prefix: 7101 ARIN Region transit ASes present in the Internet Routing Table: 1985 Average ARIN Region AS path length visible: 5.0 Max ARIN Region AS path length visible: 36 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5544 Number of ARIN addresses announced to Internet: 1348386816 Equivalent to 80 /8s, 94 /16s and 192 /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: 286935 Total RIPE prefixes after maximum aggregation: 141821 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 289161 Unique aggregates announced from the RIPE address blocks: 187870 RIPE Region origin ASes present in the Internet Routing Table: 29346 RIPE Prefixes per ASN: 9.85 RIPE Region origin ASes announcing only one prefix: 12149 RIPE Region transit ASes present in the Internet Routing Table: 4055 Average RIPE Region AS path length visible: 5.4 Max RIPE Region AS path length visible: 46 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13230 Number of RIPE addresses announced to Internet: 732712448 Equivalent to 43 /8s, 172 /16s and 78 /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: 127235 Total LACNIC prefixes after maximum aggregation: 30745 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 122728 Unique aggregates announced from the LACNIC address blocks: 50256 LACNIC Region origin ASes present in the Internet Routing Table: 11379 LACNIC Prefixes per ASN: 10.79 LACNIC Region origin ASes announcing only one prefix: 2704 LACNIC Region transit ASes present in the Internet Routing Table: 2609 Average LACNIC Region AS path length visible: 6.2 Max LACNIC Region AS path length visible: 69 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9403 Number of LACNIC addresses announced to Internet: 169912320 Equivalent to 10 /8s, 32 /16s and 168 /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: 36954 Total AfriNIC prefixes after maximum aggregation: 7000 AfriNIC Deaggregation factor: 5.28 Prefixes being announced from the AfriNIC address blocks: 53406 Unique aggregates announced from the AfriNIC address blocks: 19343 AfriNIC Region origin ASes present in the Internet Routing Table: 2015 AfriNIC Prefixes per ASN: 26.50 AfriNIC Region origin ASes announcing only one prefix: 734 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: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1380 Number of AfriNIC addresses announced to Internet: 103430144 Equivalent to 6 /8s, 42 /16s and 56 /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 13812 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5923 828 502 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4878 548 317 BBIL-AP BHARTI Airtel Ltd., IN 18403 4552 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4057 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3662 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3483 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3344 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 3009 861 515 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2859 180 556 LCS-AS-AP LARUS Limited, HK Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14520 41227 5625 AMAZON-02 - Amazon.com, Inc., US 22773 4784 3117 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4660 309 1028 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3720 1305 77 SHAW - Shaw Communications, CA 396982 3297 4857 489 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3210 8765 816 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 16625 2768 1229 2125 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2704 222 893 AS-COLOCROSSING - HostPapa, US Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7174 1711 149 UNI2-AS, ES 39891 4972 306 72 ALJAWWALSTC-AS, SA 20940 3950 3389 111 AKAMAI-ASN1, NL 9009 3819 353 2243 M247, RO 12389 3148 2322 873 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2702 195 1985 CDNEXT, GB 34984 2452 365 572 TELLCOM-AS, TR 8452 1725 1852 14 TE-AS TE-AS, EG 203020 1632 248 807 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12826 3294 609 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2460 506 344 Mega Cable, S.A. de C.V., MX 11830 1948 369 65 Instituto Costarricense de Electricidad y 11664 1461 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1373 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1243 371 22 INTEGRATEL PERU S.A.A., PE 22884 1057 71 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1056 2393 95 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 2025 648 34 RAYA-AS, EG 36992 1855 1532 338 ETISALAT-MISR, EG 24863 1292 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1229 521 44 Vodafone-, EG 37069 1116 1100 11 MOBINIL, EG 29571 1071 78 19 ORANGE-COTE-IVOIRE, CI 20011 589 155 220 NTT-DATA-Inc, ZA 15399 550 57 61 WANANCHI-, KE 36914 550 82 3 KENET-AS, KE Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14520 41227 5625 AMAZON-02 - Amazon.com, Inc., US 9808 13812 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12826 3294 609 UNINET, MX 12479 7174 1711 149 UNI2-AS, ES 7545 5923 828 502 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 306 72 ALJAWWALSTC-AS, SA 9498 4878 548 317 BBIL-AP BHARTI Airtel Ltd., IN 22773 4784 3117 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4660 309 1028 CABLEONE - CABLE ONE, INC., US 18403 4552 347 25 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13812 13692 CHINAMOBILE-CN China Mobile Communications Grou 8151 12826 12217 UNINET, MX 12479 7174 7025 UNI2-AS, ES 7545 5923 5421 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 4900 ALJAWWALSTC-AS, SA 9498 4878 4561 BBIL-AP BHARTI Airtel Ltd., IN 18403 4552 4527 FPT-AS-AP FPT Telecom Company, VN 22773 4784 4418 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4057 4028 VIETEL-AS-AP Viettel Group, VN 20940 3950 3839 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/USP/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 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3 - Level 3 Parent Complete listing at https://bgp.nsrc.org/REN/USP/data-badAS 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: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 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://bgp.nsrc.org/REN/USP/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- !!Default route being announced!! /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:40 /11:95 /12:297 /13:584 /14:1196 /15:2109 /16:13604 /17:8296 /18:13328 /19:25457 /20:45791 /21:52296 /22:113764 /23:107228 /24:654007 /25:0 /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 7000 12826 UNINET, MX 12479 6116 7174 UNI2-AS, ES 39891 3656 4972 ALJAWWALSTC-AS, SA 11492 3521 4660 CABLEONE - CABLE ONE, INC., US 6327 3501 3720 SHAW - Shaw Communications, CA 22773 3056 4784 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2612 14520 AMAZON-02 - Amazon.com, Inc., US 30036 2312 2661 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2232 3452 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/USP/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2491 2:1797 3:995 4:5 5:5100 6:196 7:6 8:1487 9:39 11:172 12:1188 13:683 14:2679 15:456 16:169 17:423 18:906 20:600 21:4 22:188 23:8263 24:2855 25:2 27:2825 28:1 29:19 31:3411 32:36 34:86 35:283 36:4644 37:4449 38:10036 39:1278 40:431 41:4544 42:2189 43:3047 44:448 45:19793 46:4884 47:408 48:120 49:2221 50:2018 51:626 52:1295 54:273 55:1117 56:11 57:316 58:2340 59:1380 60:1173 61:3126 62:3123 63:1745 64:6319 65:2134 66:6054 67:3258 68:1500 69:4211 70:1052 71:616 72:3164 74:3010 75:1486 76:592 77:2915 78:1945 79:1790 80:2336 81:2200 82:4033 83:1450 84:2123 85:3793 86:1092 87:2318 88:1347 89:4692 90:784 91:8421 92:2825 93:3015 94:4347 95:4657 96:1448 97:315 98:942 99:807 100:68 101:1457 102:4470 103:32479 104:5333 105:813 106:910 107:2865 108:1242 109:4220 110:2290 111:4110 112:3155 113:1971 114:2267 115:2327 116:2173 117:3505 118:2991 119:2087 120:2693 121:1555 122:2978 123:2290 124:1656 125:2985 126:125 128:1692 129:969 130:1617 131:2471 132:796 133:475 134:1666 135:611 136:1605 137:1550 138:3180 139:1641 140:1763 141:1720 142:2522 143:2126 144:1702 145:644 146:2207 147:2177 148:2727 149:3089 150:1360 151:2728 152:2324 153:1061 154:9555 155:2319 156:4489 157:2288 158:1515 159:2809 160:3828 161:1959 162:4030 163:2487 164:2036 165:2627 166:1290 167:2265 168:3984 169:893 170:5529 171:1120 172:4548 173:3460 174:880 175:1366 176:3828 177:4819 178:4369 179:2299 180:3019 181:4489 182:4019 183:2839 184:2021 185:21809 186:5765 187:4950 188:4602 189:4543 190:9805 191:1564 192:11474 193:9594 194:7865 195:5810 196:3345 197:3255 198:6273 199:6073 200:8231 201:6417 202:10710 203:10662 204:4792 205:3782 206:4539 207:3987 208:4393 209:5463 210:4769 211:2688 212:5001 213:4119 214:1057 215:47 216:7281 217:3563 218:1702 219:422 220:2200 221:1315 222:929 223:3403 End of report