IPv4 R&E Routing Table Report 21:35 GMT Fri 17 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: 1040370 Prefixes after maximum aggregation (per Origin AS): 399474 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 514462 Number of IPv4 prefixes with a valid ROA: 632275 Number of IPv4 prefixes with an invalid ROA: 136 Number of IPv4 prefixes with no ROA: 407959 Total ASes present in the Internet Routing Table: 78350 Prefixes per ASN: 13.28 Origin-only ASes present in the Internet Routing Table: 67092 Origin ASes announcing only one prefix: 27394 Transit ASes present in the Internet Routing Table: 11258 Transit-only ASes present in the Internet Routing Table: 580 Paths with bogon ASNs present in the IPv4 Routing Table: 286 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: 1218 Number of instances of unregistered ASNs: 1248 Number of 32-bit ASNs allocated by the RIRs: 49347 Number of 32-bit ASNs visible in the Routing Table: 40378 Prefixes from 32-bit ASNs in the Routing Table: 227366 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: 535 Number of addresses announced to Internet: 3103520256 Equivalent to 184 /8s, 251 /16s and 246 /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: 339170 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282032 Total APNIC prefixes after maximum aggregation: 82368 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 269463 Unique aggregates announced from the APNIC address blocks: 107777 APNIC Region origin ASes present in the Internet Routing Table: 15153 APNIC Prefixes per ASN: 17.78 APNIC Region origin ASes announcing only one prefix: 4657 APNIC Region transit ASes present in the Internet Routing Table: 2046 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: 10723 Number of APNIC addresses announced to Internet: 748985856 Equivalent to 44 /8s, 164 /16s and 158 /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: 303707 Total ARIN prefixes after maximum aggregation: 135865 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 303325 Unique aggregates announced from the ARIN address blocks: 147105 ARIN Region origin ASes present in the Internet Routing Table: 19422 ARIN Prefixes per ASN: 15.62 ARIN Region origin ASes announcing only one prefix: 7109 ARIN Region transit ASes present in the Internet Routing Table: 1975 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: 5553 Number of ARIN addresses announced to Internet: 1347713536 Equivalent to 80 /8s, 84 /16s and 122 /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: 288553 Total RIPE prefixes after maximum aggregation: 142683 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 291070 Unique aggregates announced from the RIPE address blocks: 189600 RIPE Region origin ASes present in the Internet Routing Table: 29401 RIPE Prefixes per ASN: 9.90 RIPE Region origin ASes announcing only one prefix: 12184 RIPE Region transit ASes present in the Internet Routing Table: 4050 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: 13292 Number of RIPE addresses announced to Internet: 733431808 Equivalent to 43 /8s, 183 /16s and 72 /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: 127782 Total LACNIC prefixes after maximum aggregation: 30783 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 122620 Unique aggregates announced from the LACNIC address blocks: 50315 LACNIC Region origin ASes present in the Internet Routing Table: 11363 LACNIC Prefixes per ASN: 10.79 LACNIC Region origin ASes announcing only one prefix: 2705 LACNIC Region transit ASes present in the Internet Routing Table: 2605 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: 9421 Number of LACNIC addresses announced to Internet: 169820928 Equivalent to 10 /8s, 31 /16s and 67 /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: 37078 Total AfriNIC prefixes after maximum aggregation: 7046 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 53356 Unique aggregates announced from the AfriNIC address blocks: 19261 AfriNIC Region origin ASes present in the Internet Routing Table: 2024 AfriNIC Prefixes per ASN: 26.36 AfriNIC Region origin ASes announcing only one prefix: 739 AfriNIC Region transit ASes present in the Internet Routing Table: 394 Average AfriNIC Region AS path length visible: 6.2 Max AfriNIC Region AS path length visible: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1389 Number of AfriNIC addresses announced to Internet: 103341824 Equivalent to 6 /8s, 40 /16s and 223 /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 13838 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5906 827 490 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4917 550 330 BBIL-AP BHARTI Airtel Ltd., IN 18403 4555 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4062 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3679 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3490 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3352 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 3005 855 532 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2571 162 486 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 14721 41275 5675 AMAZON-02 - Amazon.com, Inc., US 22773 4774 3116 363 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4669 310 1040 CABLEONE - CABLE ONE, INC., US 7155 3870 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3722 1305 75 SHAW - Shaw Communications, CA 396982 3322 4859 497 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3307 8763 815 COGENT-174 - Cogent Communications, LLC, 749 3139 54728 2390 DNIC-AS-00749 - United States Department 36352 2749 224 918 AS-COLOCROSSING - HostPapa, US 30036 2676 367 303 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 7173 1711 149 UNI2-AS, ES 39891 4943 305 72 ALJAWWALSTC-AS, SA 20940 3961 3389 111 AKAMAI-ASN1, NL 9009 3825 353 2249 M247, RO 12389 3148 2320 873 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2745 199 2025 CDNEXT, GB 34984 2451 365 575 TELLCOM-AS, TR 8452 1712 1852 14 TE-AS TE-AS, EG 203020 1667 252 832 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 12823 3317 615 UNINET, MX 10620 3430 450 1106 Telmex Colombia S.A., CO 13999 2436 506 346 Mega Cable, S.A. de C.V., MX 11830 1931 369 65 Instituto Costarricense de Electricidad y 11664 1437 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1372 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1246 371 22 INTEGRATEL PERU S.A.A., PE 26615 1072 2392 100 TIM SA, BR 22884 1061 71 361 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 2025 648 34 RAYA-AS, EG 36992 1859 1533 336 ETISALAT-MISR, EG 24863 1281 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1223 520 41 Vodafone-, EG 37069 1112 1100 11 MOBINIL, EG 29571 1071 78 19 ORANGE-COTE-IVOIRE, CI 20011 643 173 262 NTT-DATA-Inc, ZA 3741 557 724 324 NTT-DATA-Inc, ZA 36914 555 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 14721 41275 5675 AMAZON-02 - Amazon.com, Inc., US 9808 13838 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12823 3317 615 UNINET, MX 12479 7173 1711 149 UNI2-AS, ES 7545 5906 827 490 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 305 72 ALJAWWALSTC-AS, SA 9498 4917 550 330 BBIL-AP BHARTI Airtel Ltd., IN 22773 4774 3116 363 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4669 310 1040 CABLEONE - CABLE ONE, INC., US 18403 4555 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 13838 13717 CHINAMOBILE-CN China Mobile Communications Grou 8151 12823 12208 UNINET, MX 12479 7173 7024 UNI2-AS, ES 7545 5906 5416 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 4871 ALJAWWALSTC-AS, SA 9498 4917 4587 BBIL-AP BHARTI Airtel Ltd., IN 18403 4555 4530 FPT-AS-AP FPT Telecom Company, VN 22773 4774 4411 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4062 4034 VIETEL-AS-AP Viettel Group, VN 20940 3961 3850 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 /13:585 /14:1192 /15:2113 /16:13596 /17:8307 /18:13350 /19:25478 /20:45763 /21:52404 /22:113578 /23:107385 /24:656157 /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 7012 12823 UNINET, MX 12479 6114 7173 UNI2-AS, ES 39891 3628 4943 ALJAWWALSTC-AS, SA 11492 3531 4669 CABLEONE - CABLE ONE, INC., US 6327 3505 3722 SHAW - Shaw Communications, CA 22773 3053 4774 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2824 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2646 14721 AMAZON-02 - Amazon.com, Inc., US 30036 2328 2676 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2234 3430 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) ---------------------------------------------- 1:2488 2:1880 3:1010 4:5 5:5110 6:198 7:6 8:1487 9:39 11:172 12:1182 13:690 14:2687 15:459 16:190 17:424 18:915 20:602 21:4 22:188 23:8229 24:2777 25:2 27:2830 28:1 29:19 31:3469 32:36 34:87 35:283 36:4682 37:4450 38:10181 39:1285 40:417 41:4544 42:2179 43:3060 44:447 45:19700 46:4892 47:411 48:125 49:2230 50:2017 51:647 52:1323 54:285 55:1114 56:11 57:324 58:2340 59:1377 60:1174 61:3130 62:3128 63:1722 64:6315 65:2121 66:6086 67:3263 68:1500 69:4213 70:1053 71:621 72:3194 74:3027 75:1501 76:588 77:2939 78:1980 79:1795 80:2343 81:2235 82:4096 83:1447 84:2144 85:3817 86:1091 87:2376 88:1341 89:4743 90:800 91:8438 92:2818 93:3017 94:4350 95:4679 96:1455 97:314 98:941 99:813 100:70 101:1472 102:4504 103:32450 104:5364 105:854 106:912 107:2892 108:1250 109:4244 110:2280 111:4111 112:3162 113:1969 114:2276 115:2319 116:2159 117:3507 118:2955 119:2084 120:2706 121:1555 122:2994 123:2289 124:1652 125:2978 126:126 128:1618 129:977 130:1645 131:2472 132:842 133:472 134:1673 135:610 136:1596 137:1549 138:3316 139:1637 140:1753 141:1727 142:2536 143:2112 144:1760 145:645 146:2212 147:2232 148:2782 149:3137 150:1367 151:2834 152:2327 153:1408 154:9400 155:2300 156:4580 157:2307 158:1548 159:2860 160:3822 161:1959 162:4009 163:2500 164:2039 165:2645 166:1271 167:2302 168:4024 169:863 170:5553 171:1128 172:4677 173:3469 174:883 175:1357 176:3873 177:4804 178:4358 179:2307 180:3058 181:4550 182:4024 183:2836 184:2038 185:21840 186:5772 187:4957 188:4581 189:4519 190:9836 191:1542 192:11467 193:9639 194:7885 195:5797 196:3389 197:3270 198:6282 199:6053 200:8207 201:6375 202:10722 203:10659 204:4795 205:3713 206:4558 207:3999 208:4383 209:5456 210:4765 211:2680 212:5101 213:4138 214:1043 215:47 216:7294 217:3581 218:1701 219:414 220:2196 221:1313 222:937 223:3416 End of report