IPv4 R&E Routing Table Report 21:35 GMT Tue 07 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: 1038687 Prefixes after maximum aggregation (per Origin AS): 398878 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 512601 Number of IPv4 prefixes with a valid ROA: 628054 Number of IPv4 prefixes with an invalid ROA: 144 Number of IPv4 prefixes with no ROA: 410489 Total ASes present in the Internet Routing Table: 78283 Prefixes per ASN: 13.27 Origin-only ASes present in the Internet Routing Table: 67019 Origin ASes announcing only one prefix: 27355 Transit ASes present in the Internet Routing Table: 11264 Transit-only ASes present in the Internet Routing Table: 579 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: 1132 Number of instances of unregistered ASNs: 1162 Number of 32-bit ASNs allocated by the RIRs: 49227 Number of 32-bit ASNs visible in the Routing Table: 40299 Prefixes from 32-bit ASNs in the Routing Table: 226194 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: 418 Number of addresses announced to Internet: 3107748864 Equivalent to 185 /8s, 60 /16s and 124 /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: 338325 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282332 Total APNIC prefixes after maximum aggregation: 82433 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 269367 Unique aggregates announced from the APNIC address blocks: 107553 APNIC Region origin ASes present in the Internet Routing Table: 15147 APNIC Prefixes per ASN: 17.78 APNIC Region origin ASes announcing only one prefix: 4654 APNIC Region transit ASes present in the Internet Routing Table: 2048 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: 10715 Number of APNIC addresses announced to Internet: 752850688 Equivalent to 44 /8s, 223 /16s and 151 /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: 303512 Total ARIN prefixes after maximum aggregation: 135864 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 303059 Unique aggregates announced from the ARIN address blocks: 146755 ARIN Region origin ASes present in the Internet Routing Table: 19429 ARIN Prefixes per ASN: 15.60 ARIN Region origin ASes announcing only one prefix: 7106 ARIN Region transit ASes present in the Internet Routing Table: 1983 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: 5548 Number of ARIN addresses announced to Internet: 1348529664 Equivalent to 80 /8s, 96 /16s and 238 /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: 287280 Total RIPE prefixes after maximum aggregation: 142072 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 289575 Unique aggregates announced from the RIPE address blocks: 188355 RIPE Region origin ASes present in the Internet Routing Table: 29350 RIPE Prefixes per ASN: 9.87 RIPE Region origin ASes announcing only one prefix: 12156 RIPE Region transit ASes present in the Internet Routing Table: 4038 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: 13241 Number of RIPE addresses announced to Internet: 732794624 Equivalent to 43 /8s, 173 /16s and 143 /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: 127481 Total LACNIC prefixes after maximum aggregation: 30769 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 122929 Unique aggregates announced from the LACNIC address blocks: 50267 LACNIC Region origin ASes present in the Internet Routing Table: 11390 LACNIC Prefixes per ASN: 10.79 LACNIC Region origin ASes announcing only one prefix: 2706 LACNIC Region transit ASes present in the Internet Routing Table: 2612 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: 9413 Number of LACNIC addresses announced to Internet: 169894656 Equivalent to 10 /8s, 32 /16s and 99 /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: 36950 Total AfriNIC prefixes after maximum aggregation: 7008 AfriNIC Deaggregation factor: 5.27 Prefixes being announced from the AfriNIC address blocks: 53338 Unique aggregates announced from the AfriNIC address blocks: 19314 AfriNIC Region origin ASes present in the Internet Routing Table: 2017 AfriNIC Prefixes per ASN: 26.44 AfriNIC Region origin ASes announcing only one prefix: 733 AfriNIC Region transit ASes present in the Internet Routing Table: 388 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: 1382 Number of AfriNIC addresses announced to Internet: 103417344 Equivalent to 6 /8s, 42 /16s and 6 /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 13808 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5918 828 500 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4891 549 324 BBIL-AP BHARTI Airtel Ltd., IN 18403 4550 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4059 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3659 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 3008 859 518 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2848 179 541 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 14563 41234 5653 AMAZON-02 - Amazon.com, Inc., US 22773 4785 3117 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4666 310 1033 CABLEONE - CABLE ONE, INC., US 7155 3864 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3723 1305 77 SHAW - Shaw Communications, CA 396982 3303 4857 492 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3195 8765 816 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 16625 2764 1231 2125 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2707 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 7164 1711 149 UNI2-AS, ES 39891 4972 306 72 ALJAWWALSTC-AS, SA 20940 3939 3389 111 AKAMAI-ASN1, NL 9009 3833 354 2254 M247, RO 12389 3144 2318 872 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2702 195 1985 CDNEXT, GB 34984 2448 365 571 TELLCOM-AS, TR 8452 1725 1852 14 TE-AS TE-AS, EG 203020 1637 249 809 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 12806 3286 615 UNINET, MX 10620 3453 458 1104 Telmex Colombia S.A., CO 13999 2461 506 344 Mega Cable, S.A. de C.V., MX 11830 1948 369 65 Instituto Costarricense de Electricidad y 11664 1434 277 34 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 1057 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 1856 1532 339 ETISALAT-MISR, EG 24863 1293 389 16 LINKdotNET-AS, EG 36935 1241 523 45 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 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 549 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 14563 41234 5653 AMAZON-02 - Amazon.com, Inc., US 9808 13808 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12806 3286 615 UNINET, MX 12479 7164 1711 149 UNI2-AS, ES 7545 5918 828 500 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 306 72 ALJAWWALSTC-AS, SA 9498 4891 549 324 BBIL-AP BHARTI Airtel Ltd., IN 22773 4785 3117 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4666 310 1033 CABLEONE - CABLE ONE, INC., US 18403 4550 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 13808 13688 CHINAMOBILE-CN China Mobile Communications Grou 8151 12806 12191 UNINET, MX 12479 7164 7015 UNI2-AS, ES 7545 5918 5418 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 4900 ALJAWWALSTC-AS, SA 9498 4891 4567 BBIL-AP BHARTI Airtel Ltd., IN 18403 4550 4525 FPT-AS-AP FPT Telecom Company, VN 22773 4785 4419 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4059 4030 VIETEL-AS-AP Viettel Group, VN 20940 3939 3828 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 /14:1195 /15:2107 /16:13607 /17:8296 /18:13332 /19:25450 /20:45766 /21:52304 /22:113762 /23:107335 /24:654486 /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 12806 UNINET, MX 12479 6106 7164 UNI2-AS, ES 39891 3656 4972 ALJAWWALSTC-AS, SA 11492 3527 4666 CABLEONE - CABLE ONE, INC., US 6327 3504 3723 SHAW - Shaw Communications, CA 22773 3057 4785 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2823 3864 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2625 14563 AMAZON-02 - Amazon.com, Inc., US 30036 2314 2663 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3453 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) ---------------------------------------------- 1:2490 2:1803 3:994 4:5 5:5101 6:196 7:6 8:1488 9:39 11:172 12:1189 13:676 14:2675 15:453 16:170 17:423 18:914 20:600 21:4 22:188 23:8258 24:2778 25:2 27:2823 28:1 29:19 31:3422 32:36 34:87 35:281 36:4644 37:4444 38:10038 39:1278 40:421 41:4535 42:2175 43:3055 44:446 45:19808 46:4893 47:408 48:121 49:2221 50:2012 51:626 52:1298 54:273 55:1125 56:11 57:322 58:2343 59:1377 60:1173 61:3135 62:3123 63:1728 64:6295 65:2131 66:6073 67:3257 68:1496 69:4209 70:1055 71:617 72:3174 74:3021 75:1485 76:584 77:2915 78:1960 79:1790 80:2348 81:2194 82:4047 83:1450 84:2138 85:3796 86:1089 87:2317 88:1347 89:4697 90:781 91:8426 92:2825 93:3017 94:4340 95:4652 96:1454 97:315 98:944 99:807 100:68 101:1460 102:4470 103:32475 104:5347 105:820 106:912 107:2869 108:1233 109:4219 110:2290 111:4113 112:3140 113:1974 114:2266 115:2327 116:2165 117:3504 118:3000 119:2083 120:2693 121:1557 122:2985 123:2288 124:1658 125:2981 126:125 128:1625 129:980 130:1625 131:2483 132:818 133:475 134:1664 135:610 136:1604 137:1541 138:3288 139:1643 140:1762 141:1727 142:2523 143:2145 144:1708 145:644 146:2207 147:2187 148:2763 149:3095 150:1358 151:2772 152:2318 153:1156 154:9539 155:2315 156:4463 157:2297 158:1521 159:2820 160:3829 161:1963 162:4038 163:2492 164:2036 165:2641 166:1273 167:2298 168:3990 169:856 170:5548 171:1124 172:4562 173:3470 174:881 175:1364 176:3868 177:4850 178:4389 179:2288 180:3018 181:4501 182:4019 183:2840 184:2023 185:21830 186:5763 187:4965 188:4600 189:4520 190:9796 191:1570 192:11514 193:9592 194:7859 195:5813 196:3348 197:3257 198:6282 199:6061 200:8242 201:6413 202:10705 203:10663 204:4794 205:3787 206:4545 207:3986 208:4389 209:5470 210:4768 211:2686 212:5005 213:4111 214:1058 215:47 216:7264 217:3572 218:1701 219:422 220:2201 221:1312 222:939 223:3405 End of report