IPv4 R&E Routing Table Report 21:35 GMT Wed 15 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: 1040378 Prefixes after maximum aggregation (per Origin AS): 399302 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 514107 Number of IPv4 prefixes with a valid ROA: 632171 Number of IPv4 prefixes with an invalid ROA: 136 Number of IPv4 prefixes with no ROA: 408071 Total ASes present in the Internet Routing Table: 78340 Prefixes per ASN: 13.28 Origin-only ASes present in the Internet Routing Table: 67098 Origin ASes announcing only one prefix: 27382 Transit ASes present in the Internet Routing Table: 11242 Transit-only ASes present in the Internet Routing Table: 579 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: 1096 Number of instances of unregistered ASNs: 1126 Number of 32-bit ASNs allocated by the RIRs: 49333 Number of 32-bit ASNs visible in the Routing Table: 40362 Prefixes from 32-bit ASNs in the Routing Table: 227281 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: 419 Number of addresses announced to Internet: 3103476480 Equivalent to 184 /8s, 251 /16s and 75 /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: 339031 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282272 Total APNIC prefixes after maximum aggregation: 82352 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269390 Unique aggregates announced from the APNIC address blocks: 107722 APNIC Region origin ASes present in the Internet Routing Table: 15152 APNIC Prefixes per ASN: 17.78 APNIC Region origin ASes announcing only one prefix: 4658 APNIC Region transit ASes present in the Internet Routing Table: 2042 Average APNIC Region AS path length visible: 5.1 Max APNIC Region AS path length visible: 29 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10721 Number of APNIC addresses announced to Internet: 748866560 Equivalent to 44 /8s, 162 /16s and 204 /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: 303847 Total ARIN prefixes after maximum aggregation: 135909 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 303366 Unique aggregates announced from the ARIN address blocks: 147078 ARIN Region origin ASes present in the Internet Routing Table: 19426 ARIN Prefixes per ASN: 15.62 ARIN Region origin ASes announcing only one prefix: 7110 ARIN Region transit ASes present in the Internet Routing Table: 1974 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: 5559 Number of ARIN addresses announced to Internet: 1348005120 Equivalent to 80 /8s, 88 /16s and 237 /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: 288071 Total RIPE prefixes after maximum aggregation: 142471 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 290644 Unique aggregates announced from the RIPE address blocks: 189281 RIPE Region origin ASes present in the Internet Routing Table: 29387 RIPE Prefixes per ASN: 9.89 RIPE Region origin ASes announcing only one prefix: 12176 RIPE Region transit ASes present in the Internet Routing Table: 4043 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: 13272 Number of RIPE addresses announced to Internet: 733279488 Equivalent to 43 /8s, 180 /16s and 245 /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: 128088 Total LACNIC prefixes after maximum aggregation: 30827 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 122955 Unique aggregates announced from the LACNIC address blocks: 50266 LACNIC Region origin ASes present in the Internet Routing Table: 11388 LACNIC Prefixes per ASN: 10.80 LACNIC Region origin ASes announcing only one prefix: 2702 LACNIC Region transit ASes present in the Internet Routing Table: 2609 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: 9422 Number of LACNIC addresses announced to Internet: 169825536 Equivalent to 10 /8s, 31 /16s and 85 /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: 37004 Total AfriNIC prefixes after maximum aggregation: 7044 AfriNIC Deaggregation factor: 5.25 Prefixes being announced from the AfriNIC address blocks: 53603 Unique aggregates announced from the AfriNIC address blocks: 19401 AfriNIC Region origin ASes present in the Internet Routing Table: 2023 AfriNIC Prefixes per ASN: 26.50 AfriNIC Region origin ASes announcing only one prefix: 736 AfriNIC Region transit ASes present in the Internet Routing Table: 390 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: 1388 Number of AfriNIC addresses announced to Internet: 103305472 Equivalent to 6 /8s, 40 /16s and 81 /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 13831 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5913 828 496 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4913 550 330 BBIL-AP BHARTI Airtel Ltd., IN 18403 4589 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4066 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3682 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3487 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3350 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 3008 854 534 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2888 182 492 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 14688 41275 5670 AMAZON-02 - Amazon.com, Inc., US 22773 4781 3116 365 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 3321 4859 493 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3309 8764 817 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2720 222 903 AS-COLOCROSSING - HostPapa, US 16625 2676 1210 2083 AKAMAI-AS - Akamai Technologies, Inc., 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 7175 1711 149 UNI2-AS, ES 39891 4972 306 72 ALJAWWALSTC-AS, SA 20940 3960 3389 111 AKAMAI-ASN1, NL 9009 3821 353 2245 M247, RO 12389 3147 2318 874 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2739 199 2019 CDNEXT, GB 34984 2450 365 574 TELLCOM-AS, TR 8452 1711 1852 14 TE-AS TE-AS, EG 203020 1663 252 833 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 12794 3314 615 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2435 506 345 Mega Cable, S.A. de C.V., MX 11830 1937 369 65 Instituto Costarricense de Electricidad y 11664 1436 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 1247 371 22 INTEGRATEL PERU S.A.A., PE 26615 1072 2392 100 TIM SA, BR 22884 1056 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 1860 1532 341 ETISALAT-MISR, EG 24863 1282 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1224 521 42 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 556 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 14688 41275 5670 AMAZON-02 - Amazon.com, Inc., US 9808 13831 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12794 3314 615 UNINET, MX 12479 7175 1711 149 UNI2-AS, ES 7545 5913 828 496 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 306 72 ALJAWWALSTC-AS, SA 9498 4913 550 330 BBIL-AP BHARTI Airtel Ltd., IN 22773 4781 3116 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4669 310 1040 CABLEONE - CABLE ONE, INC., US 18403 4589 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 13831 13711 CHINAMOBILE-CN China Mobile Communications Grou 8151 12794 12179 UNINET, MX 12479 7175 7026 UNI2-AS, ES 7545 5913 5417 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 4900 ALJAWWALSTC-AS, SA 9498 4913 4583 BBIL-AP BHARTI Airtel Ltd., IN 18403 4589 4564 FPT-AS-AP FPT Telecom Company, VN 22773 4781 4416 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4066 4037 VIETEL-AS-AP Viettel Group, VN 20940 3960 3849 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 /15:2112 /16:13600 /17:8304 /18:13339 /19:25466 /20:45772 /21:52372 /22:113611 /23:107396 /24:656167 /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 6977 12794 UNINET, MX 12479 6116 7175 UNI2-AS, ES 39891 3656 4972 ALJAWWALSTC-AS, SA 11492 3531 4669 CABLEONE - CABLE ONE, INC., US 6327 3505 3722 SHAW - Shaw Communications, CA 22773 3054 4781 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2824 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2645 14688 AMAZON-02 - Amazon.com, Inc., US 30036 2326 2674 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) ---------------------------------------------- 1:2489 2:1876 3:1006 4:5 5:5108 6:197 7:6 8:1489 9:39 11:172 12:1185 13:694 14:2683 15:458 16:179 17:424 18:914 20:602 21:4 22:188 23:8207 24:2778 25:2 27:2830 28:1 29:19 31:3447 32:36 34:87 35:283 36:4673 37:4458 38:10174 39:1282 40:416 41:4511 42:2203 43:3054 44:446 45:19709 46:4846 47:407 48:125 49:2230 50:2018 51:627 52:1307 54:284 55:1114 56:11 57:322 58:2346 59:1377 60:1173 61:3128 62:3123 63:1725 64:6319 65:2129 66:6089 67:3259 68:1500 69:4199 70:1051 71:621 72:3199 74:3021 75:1487 76:588 77:2925 78:1978 79:1793 80:2351 81:2233 82:4078 83:1445 84:2135 85:3812 86:1092 87:2371 88:1341 89:4734 90:799 91:8422 92:2820 93:3014 94:4339 95:4657 96:1453 97:314 98:943 99:813 100:68 101:1467 102:4506 103:32434 104:5367 105:854 106:912 107:2886 108:1246 109:4232 110:2280 111:4110 112:3159 113:1964 114:2274 115:2320 116:2162 117:3503 118:2955 119:2084 120:2706 121:1555 122:2995 123:2288 124:1655 125:2976 126:126 128:1623 129:976 130:1641 131:2476 132:842 133:472 134:1667 135:611 136:1602 137:1545 138:3329 139:1639 140:1765 141:1723 142:2539 143:2109 144:1757 145:646 146:2209 147:2229 148:2770 149:3120 150:1365 151:2828 152:2327 153:1398 154:9869 155:2310 156:4451 157:2307 158:1534 159:2858 160:3814 161:1957 162:4024 163:2505 164:2031 165:2641 166:1272 167:2299 168:4038 169:861 170:5576 171:1128 172:4630 173:3485 174:883 175:1358 176:3874 177:4864 178:4357 179:2314 180:3058 181:4533 182:4013 183:2840 184:2034 185:21820 186:5783 187:4953 188:4594 189:4504 190:9840 191:1564 192:11483 193:9630 194:7870 195:5814 196:3384 197:3263 198:6288 199:6064 200:8195 201:6395 202:10719 203:10660 204:4813 205:3730 206:4547 207:3989 208:4392 209:5452 210:4768 211:2681 212:5095 213:4131 214:1044 215:47 216:7278 217:3575 218:1700 219:414 220:2198 221:1312 222:938 223:3409 End of report