IPv4 R&E Routing Table Report 21:35 GMT Fri 22 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: 1048259 Prefixes after maximum aggregation (per Origin AS): 402273 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 517591 Number of IPv4 prefixes with a valid ROA: 657347 Number of IPv4 prefixes with an invalid ROA: 154 Number of IPv4 prefixes with no ROA: 390758 Total ASes present in the Internet Routing Table: 78538 Prefixes per ASN: 13.35 Origin-only ASes present in the Internet Routing Table: 67260 Origin ASes announcing only one prefix: 27452 Transit ASes present in the Internet Routing Table: 11278 Transit-only ASes present in the Internet Routing Table: 588 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: 1253 Number of instances of unregistered ASNs: 1283 Number of 32-bit ASNs allocated by the RIRs: 49865 Number of 32-bit ASNs visible in the Routing Table: 40645 Prefixes from 32-bit ASNs in the Routing Table: 230193 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: 433 Number of addresses announced to Internet: 3104157952 Equivalent to 185 /8s, 5 /16s and 177 /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: 342901 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 284470 Total APNIC prefixes after maximum aggregation: 82979 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 271098 Unique aggregates announced from the APNIC address blocks: 108015 APNIC Region origin ASes present in the Internet Routing Table: 15174 APNIC Prefixes per ASN: 17.87 APNIC Region origin ASes announcing only one prefix: 4634 APNIC Region transit ASes present in the Internet Routing Table: 2045 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: 10761 Number of APNIC addresses announced to Internet: 747691776 Equivalent to 44 /8s, 144 /16s and 223 /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: 304447 Total ARIN prefixes after maximum aggregation: 137121 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 303193 Unique aggregates announced from the ARIN address blocks: 147779 ARIN Region origin ASes present in the Internet Routing Table: 19430 ARIN Prefixes per ASN: 15.60 ARIN Region origin ASes announcing only one prefix: 7111 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: 5585 Number of ARIN addresses announced to Internet: 1348211712 Equivalent to 80 /8s, 92 /16s and 20 /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: 290623 Total RIPE prefixes after maximum aggregation: 143515 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 294102 Unique aggregates announced from the RIPE address blocks: 191669 RIPE Region origin ASes present in the Internet Routing Table: 29519 RIPE Prefixes per ASN: 9.96 RIPE Region origin ASes announcing only one prefix: 12236 RIPE Region transit ASes present in the Internet Routing Table: 4074 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: 13455 Number of RIPE addresses announced to Internet: 733968384 Equivalent to 43 /8s, 191 /16s and 120 /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: 129929 Total LACNIC prefixes after maximum aggregation: 30849 LACNIC Deaggregation factor: 4.21 Prefixes being announced from the LACNIC address blocks: 124348 Unique aggregates announced from the LACNIC address blocks: 50349 LACNIC Region origin ASes present in the Internet Routing Table: 11408 LACNIC Prefixes per ASN: 10.90 LACNIC Region origin ASes announcing only one prefix: 2735 LACNIC Region transit ASes present in the Internet Routing Table: 2597 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: 9448 Number of LACNIC addresses announced to Internet: 169732864 Equivalent to 10 /8s, 29 /16s and 235 /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: 37537 Total AfriNIC prefixes after maximum aggregation: 7068 AfriNIC Deaggregation factor: 5.31 Prefixes being announced from the AfriNIC address blocks: 55084 Unique aggregates announced from the AfriNIC address blocks: 19405 AfriNIC Region origin ASes present in the Internet Routing Table: 2033 AfriNIC Prefixes per ASN: 27.09 AfriNIC Region origin ASes announcing only one prefix: 736 AfriNIC Region transit ASes present in the Internet Routing Table: 393 Average AfriNIC Region AS path length visible: 6.0 Max AfriNIC Region AS path length visible: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1396 Number of AfriNIC addresses announced to Internet: 104356352 Equivalent to 6 /8s, 56 /16s and 90 /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 13916 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5876 825 476 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4939 551 322 BBIL-AP BHARTI Airtel Ltd., IN 18403 4560 347 24 FPT-AP FPT Telecom Company, VN 7552 4064 1331 26 VIETEL-AS-AP Viettel Group, VN 7713 3695 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3543 887 177 CMNET-JIANGSU-AP China Mobile communicati 17561 3471 218 604 LCS-AS-AP LARUS Limited, HK 45899 3371 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2738 745 734 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 15030 41426 5718 AMAZON-02 - Amazon.com, Inc., US 22773 4767 3114 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4592 305 1088 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3717 1305 75 SHAW - Shaw Communications, CA 396982 3350 4865 505 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3138 54728 2389 DNIC-AS-00749 - United States Department 36352 3045 230 1019 AS-COLOCROSSING - HostPapa, US 7029 2635 2558 886 WINDSTREAM - Windstream Communications LL 30036 2580 357 532 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 7135 1711 149 UNI2-AS, ES 39891 4975 307 72 ALJAWWALSTC-AS, SA 9009 4070 371 2473 M247, RO 20940 3914 3389 110 AKAMAI-ASN1, NL 12389 3140 2319 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2798 206 2065 CDNEXT, GB 34984 2489 367 583 TELLCOM-AS, TR 8452 1718 1852 14 TE-AS TE-AS, EG 203020 1653 252 829 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 12752 3254 631 UNINET, MX 10620 3432 450 1101 Telmex Colombia S.A., CO 13999 2354 500 357 Mega Cable, S.A. de C.V., MX 11830 1935 369 65 Instituto Costarricense de Electricidad y 11664 1471 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1364 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1224 371 22 INTEGRATEL PERU S.A.A., PE 22884 1076 70 363 TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. D 26615 1073 2392 100 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 2028 649 36 RAYA-AS, EG 36992 1860 1532 337 ETISALAT-MISR, EG 36935 1275 521 43 Vodafone-, EG 24863 1255 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1086 70 18 ORANGE-COTE-IVOIRE, CI 20011 643 173 262 NTT-DATA-Inc, ZA 328608 636 57 172 Africa-on-Cloud-AS, ZA 36914 562 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 15030 41426 5718 AMAZON-02 - Amazon.com, Inc., US 9808 13916 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12752 3254 631 UNINET, MX 12479 7135 1711 149 UNI2-AS, ES 7545 5876 825 476 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 307 72 ALJAWWALSTC-AS, SA 9498 4939 551 322 BBIL-AP BHARTI Airtel Ltd., IN 22773 4767 3114 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4592 305 1088 CABLEONE - CABLE ONE, INC., US 18403 4560 347 24 FPT-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 13916 13795 CHINAMOBILE-CN China Mobile Communications Grou 8151 12752 12121 UNINET, MX 12479 7135 6986 UNI2-AS, ES 7545 5876 5400 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 4903 ALJAWWALSTC-AS, SA 9498 4939 4617 BBIL-AP BHARTI Airtel Ltd., IN 18403 4560 4536 FPT-AP FPT Telecom Company, VN 22773 4767 4401 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4064 4038 VIETEL-AS-AP Viettel Group, VN 20940 3914 3804 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 46198 UNALLOCATED 8.10.6.0/24 23520 LIBERTY-NETWORKS - Colu 46198 UNALLOCATED 8.10.7.0/24 23520 LIBERTY-NETWORKS - Colu 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 400273 UNALLOCATED 8.41.137.0/24 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 Complete listing at https://bgp.nsrc.org/REN/USP/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.131.100.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.100.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.156.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.156.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.212.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.212.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 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 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 /12:298 /13:583 /14:1190 /15:2118 /16:13603 /17:8289 /18:13357 /19:25481 /20:45782 /21:52411 /22:113498 /23:108547 /24:662937 /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 6973 12752 UNINET, MX 12479 6071 7135 UNI2-AS, ES 39891 3660 4975 ALJAWWALSTC-AS, SA 6327 3498 3717 SHAW - Shaw Communications, CA 11492 3469 4592 CABLEONE - CABLE ONE, INC., US 22773 3064 4767 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2714 15030 AMAZON-02 - Amazon.com, Inc., US 10620 2236 3432 Telmex Colombia S.A., CO 30036 2235 2580 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US Complete listing at https://bgp.nsrc.org/REN/USP/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2511 2:2078 3:1001 4:5 5:5107 6:201 7:6 8:1475 9:63 11:172 12:1130 13:712 14:2719 15:467 16:215 17:443 18:920 20:611 21:4 22:188 23:8424 24:2777 25:2 27:2823 28:1 29:19 31:3581 32:36 34:87 35:285 36:4779 37:4441 38:9711 39:1307 40:412 41:4561 42:2186 43:3166 44:454 45:19761 46:4906 47:414 48:151 49:2250 50:2026 51:818 52:1332 54:287 55:1107 56:11 57:325 58:2347 59:1366 60:1175 61:3170 62:3141 63:1681 64:6383 65:2147 66:6134 67:3273 68:1514 69:4225 70:1056 71:616 72:3181 74:3071 75:1501 76:598 77:2933 78:2045 79:1792 80:2340 81:2268 82:4173 83:1458 84:2164 85:3837 86:1096 87:2596 88:1317 89:4776 90:794 91:8475 92:2771 93:3034 94:4407 95:4688 96:1445 97:308 98:950 99:841 100:70 101:1465 102:4634 103:32433 104:5426 105:844 106:919 107:2948 108:1279 109:4277 110:2280 111:4124 112:3163 113:2014 114:2534 115:2337 116:2069 117:3591 118:3046 119:2088 120:2739 121:1562 122:3023 123:2296 124:1660 125:2985 126:158 128:1607 129:975 130:1680 131:2445 132:886 133:502 134:1722 135:613 136:1464 137:1567 138:3411 139:1718 140:1842 141:1772 142:2526 143:2047 144:1780 145:635 146:2186 147:2248 148:2790 149:3162 150:1381 151:2921 152:2354 153:1705 154:9624 155:2276 156:5152 157:2447 158:1579 159:2869 160:3852 161:1986 162:4106 163:2598 164:2428 165:2678 166:1250 167:2340 168:4046 169:871 170:5586 171:1131 172:4804 173:3454 174:886 175:1357 176:3937 177:5043 178:4417 179:2376 180:3071 181:4599 182:4045 183:2845 184:2019 185:21855 186:6198 187:5049 188:4518 189:4531 190:9888 191:2009 192:11571 193:9615 194:7856 195:5836 196:3441 197:3247 198:6288 199:6071 200:8293 201:6422 202:10717 203:10683 204:4799 205:3751 206:4445 207:4005 208:4380 209:5505 210:4777 211:2690 212:5086 213:4124 214:1040 215:47 216:7307 217:3625 218:1800 219:413 220:2223 221:1320 222:939 223:3443 End of report