IPv4 R&E Routing Table Report 21:35 GMT Wed 06 May, 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: 1044149 Prefixes after maximum aggregation (per Origin AS): 400985 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 516039 Number of IPv4 prefixes with a valid ROA: 640701 Number of IPv4 prefixes with an invalid ROA: 164 Number of IPv4 prefixes with no ROA: 403284 Total ASes present in the Internet Routing Table: 78472 Prefixes per ASN: 13.31 Origin-only ASes present in the Internet Routing Table: 67198 Origin ASes announcing only one prefix: 27417 Transit ASes present in the Internet Routing Table: 11274 Transit-only ASes present in the Internet Routing Table: 594 Paths with bogon ASNs present in the IPv4 Routing Table: 284 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: 1065 Number of instances of unregistered ASNs: 1095 Number of 32-bit ASNs allocated by the RIRs: 49643 Number of 32-bit ASNs visible in the Routing Table: 40546 Prefixes from 32-bit ASNs in the Routing Table: 228799 Number of bogon 32-bit ASNs visible in the Routing Table: 84 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 408 Number of addresses announced to Internet: 3102995200 Equivalent to 184 /8s, 243 /16s and 243 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 340935 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 283587 Total APNIC prefixes after maximum aggregation: 82767 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269972 Unique aggregates announced from the APNIC address blocks: 107796 APNIC Region origin ASes present in the Internet Routing Table: 15193 APNIC Prefixes per ASN: 17.77 APNIC Region origin ASes announcing only one prefix: 4649 APNIC Region transit ASes present in the Internet Routing Table: 2053 Average APNIC Region AS path length visible: 5.2 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10771 Number of APNIC addresses announced to Internet: 747514880 Equivalent to 44 /8s, 142 /16s and 44 /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: 303353 Total ARIN prefixes after maximum aggregation: 136518 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 302648 Unique aggregates announced from the ARIN address blocks: 147590 ARIN Region origin ASes present in the Internet Routing Table: 19443 ARIN Prefixes per ASN: 15.57 ARIN Region origin ASes announcing only one prefix: 7119 ARIN Region transit ASes present in the Internet Routing Table: 1971 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: 5567 Number of ARIN addresses announced to Internet: 1347966720 Equivalent to 80 /8s, 88 /16s and 87 /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: 290137 Total RIPE prefixes after maximum aggregation: 143164 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 293297 Unique aggregates announced from the RIPE address blocks: 191011 RIPE Region origin ASes present in the Internet Routing Table: 29455 RIPE Prefixes per ASN: 9.96 RIPE Region origin ASes announcing only one prefix: 12201 RIPE Region transit ASes present in the Internet Routing Table: 4072 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: 13390 Number of RIPE addresses announced to Internet: 733261056 Equivalent to 43 /8s, 180 /16s and 173 /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: 128758 Total LACNIC prefixes after maximum aggregation: 30824 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 123207 Unique aggregates announced from the LACNIC address blocks: 50291 LACNIC Region origin ASes present in the Internet Routing Table: 11387 LACNIC Prefixes per ASN: 10.82 LACNIC Region origin ASes announcing only one prefix: 2718 LACNIC Region transit ASes present in the Internet Routing Table: 2593 Average LACNIC Region AS path length visible: 6.3 Max LACNIC Region AS path length visible: 69 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9432 Number of LACNIC addresses announced to Internet: 169769984 Equivalent to 10 /8s, 30 /16s and 124 /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: 37249 Total AfriNIC prefixes after maximum aggregation: 7028 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 54616 Unique aggregates announced from the AfriNIC address blocks: 19007 AfriNIC Region origin ASes present in the Internet Routing Table: 2019 AfriNIC Prefixes per ASN: 27.05 AfriNIC Region origin ASes announcing only one prefix: 730 AfriNIC Region transit ASes present in the Internet Routing Table: 391 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: 1386 Number of AfriNIC addresses announced to Internet: 104291328 Equivalent to 6 /8s, 55 /16s and 92 /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 13862 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5884 826 483 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4935 551 321 BBIL-AP BHARTI Airtel Ltd., IN 18403 4546 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4067 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3688 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3538 887 177 CMNET-JIANGSU-AP China Mobile communicati 17561 3454 217 579 LCS-AS-AP LARUS Limited, HK 45899 3359 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2831 785 695 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 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 14928 41294 5692 AMAZON-02 - Amazon.com, Inc., US 22773 4780 3115 363 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4652 309 1048 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3718 1305 75 SHAW - Shaw Communications, CA 396982 3336 4864 505 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3138 54728 2389 DNIC-AS-00749 - United States Department 36352 2721 222 905 AS-COLOCROSSING - HostPapa, US 7029 2629 2559 917 WINDSTREAM - Windstream Communications LL 30036 2611 358 455 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom C 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 7186 1711 149 UNI2-AS, ES 39891 4975 307 72 ALJAWWALSTC-AS, SA 20940 3908 3389 111 AKAMAI-ASN1, NL 9009 3853 355 2274 M247, RO 12389 3146 2321 874 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2766 202 2038 CDNEXT, GB 34984 2452 365 582 TELLCOM-AS, TR 8452 1709 1852 14 TE-AS TE-AS, EG 203020 1655 252 831 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 12766 3266 636 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2425 506 351 Mega Cable, S.A. de C.V., MX 11830 1936 369 65 Instituto Costarricense de Electricidad y 11664 1449 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1375 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1228 379 23 INTEGRATEL PERU S.A.A., PE 26615 1073 2392 100 TIM SA, BR 22884 1072 70 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 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 2027 649 36 RAYA-AS, EG 36992 1860 1533 334 ETISALAT-MISR, EG 24863 1271 389 16 LINKdotNET-AS, EG 36935 1238 521 42 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1070 70 18 ORANGE-COTE-IVOIRE, CI 20011 643 173 262 NTT-DATA-Inc, ZA 328608 572 53 155 Africa-on-Cloud-AS, ZA 36914 558 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 14928 41294 5692 AMAZON-02 - Amazon.com, Inc., US 9808 13862 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12766 3266 636 UNINET, MX 12479 7186 1711 149 UNI2-AS, ES 7545 5884 826 483 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 307 72 ALJAWWALSTC-AS, SA 9498 4935 551 321 BBIL-AP BHARTI Airtel Ltd., IN 22773 4780 3115 363 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4652 309 1048 CABLEONE - CABLE ONE, INC., US 18403 4546 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 13862 13741 CHINAMOBILE-CN China Mobile Communications Grou 8151 12766 12130 UNINET, MX 12479 7186 7037 UNI2-AS, ES 7545 5884 5401 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 4903 ALJAWWALSTC-AS, SA 9498 4935 4614 BBIL-AP BHARTI Airtel Ltd., IN 18403 4546 4521 FPT-AS-AP FPT Telecom Company, VN 22773 4780 4417 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4067 4039 VIETEL-AS-AP Viettel Group, VN 20940 3908 3797 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 395729 UNALLOCATED 8.28.58.0/24 32787 PROLEXIC-TECHNOLOGIES-D 395729 UNALLOCATED 8.28.60.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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 /10:39 /11:95 /12:297 /13:584 /14:1191 /15:2112 /16:13607 /17:8311 /18:13364 /19:25480 /20:45803 /21:52385 /22:113616 /23:107876 /24:659358 /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 6972 12766 UNINET, MX 12479 6123 7186 UNI2-AS, ES 39891 3660 4975 ALJAWWALSTC-AS, SA 11492 3517 4652 CABLEONE - CABLE ONE, INC., US 6327 3499 3718 SHAW - Shaw Communications, CA 22773 3059 4780 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2687 14928 AMAZON-02 - Amazon.com, Inc., US 30036 2265 2611 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3429 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) ---------------------------------------------- 1:2487 2:2048 3:1002 4:5 5:5091 6:199 7:6 8:1490 9:43 11:172 12:1181 13:714 14:2704 15:464 16:208 17:442 18:920 20:606 21:4 22:188 23:8343 24:2779 25:2 27:2820 28:1 29:19 31:3495 32:36 34:86 35:284 36:4733 37:4442 38:9624 39:1295 40:439 41:4540 42:2167 43:3129 44:452 45:19770 46:4890 47:413 48:127 49:2234 50:2010 51:680 52:1317 54:279 55:1031 56:11 57:326 58:2340 59:1372 60:1175 61:3149 62:3127 63:1691 64:6344 65:2141 66:6122 67:3266 68:1499 69:4210 70:1052 71:615 72:3167 74:3057 75:1500 76:593 77:2946 78:2041 79:1791 80:2345 81:2239 82:4167 83:1457 84:2150 85:3841 86:1092 87:2498 88:1334 89:4810 90:816 91:8462 92:2796 93:3026 94:4390 95:4741 96:1455 97:310 98:945 99:828 100:70 101:1463 102:4533 103:32513 104:5379 105:856 106:900 107:2880 108:1257 109:4254 110:2282 111:4127 112:3179 113:1974 114:2283 115:2330 116:2145 117:3489 118:3042 119:2060 120:2714 121:1554 122:2995 123:2306 124:1656 125:2987 126:126 128:1606 129:977 130:1657 131:2485 132:886 133:486 134:1674 135:607 136:1538 137:1559 138:3362 139:1623 140:1771 141:1739 142:2569 143:2089 144:1776 145:637 146:2193 147:2256 148:2809 149:3095 150:1369 151:2909 152:2341 153:1574 154:9820 155:2306 156:4847 157:2333 158:1575 159:2868 160:3826 161:1957 162:4061 163:2553 164:2405 165:2664 166:1285 167:2307 168:4027 169:868 170:5592 171:1137 172:4772 173:3459 174:883 175:1354 176:3876 177:4853 178:4399 179:2329 180:3054 181:4561 182:4032 183:2833 184:2012 185:21901 186:6082 187:5002 188:4585 189:4526 190:9788 191:1679 192:11482 193:9633 194:7897 195:5827 196:3393 197:3226 198:6274 199:6058 200:8268 201:6389 202:10695 203:10677 204:4783 205:3739 206:4521 207:3984 208:4372 209:5480 210:4768 211:2687 212:5092 213:4110 214:1042 215:47 216:7298 217:3624 218:1700 219:414 220:2191 221:1317 222:938 223:3432 End of report