IPv4 R&E Routing Table Report 21:35 GMT Sat 16 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: 1046844 Prefixes after maximum aggregation (per Origin AS): 401752 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 517291 Number of IPv4 prefixes with a valid ROA: 646482 Number of IPv4 prefixes with an invalid ROA: 151 Number of IPv4 prefixes with no ROA: 400211 Total ASes present in the Internet Routing Table: 78520 Prefixes per ASN: 13.33 Origin-only ASes present in the Internet Routing Table: 67247 Origin ASes announcing only one prefix: 27427 Transit ASes present in the Internet Routing Table: 11273 Transit-only ASes present in the Internet Routing Table: 596 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: 1276 Number of instances of unregistered ASNs: 1306 Number of 32-bit ASNs allocated by the RIRs: 49776 Number of 32-bit ASNs visible in the Routing Table: 40617 Prefixes from 32-bit ASNs in the Routing Table: 230128 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: 454 Number of addresses announced to Internet: 3103343104 Equivalent to 184 /8s, 249 /16s and 66 /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: 342702 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 284174 Total APNIC prefixes after maximum aggregation: 82978 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 270444 Unique aggregates announced from the APNIC address blocks: 107955 APNIC Region origin ASes present in the Internet Routing Table: 15193 APNIC Prefixes per ASN: 17.80 APNIC Region origin ASes announcing only one prefix: 4641 APNIC Region transit ASes present in the Internet Routing Table: 2050 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: 10776 Number of APNIC addresses announced to Internet: 747422208 Equivalent to 44 /8s, 140 /16s and 194 /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: 303598 Total ARIN prefixes after maximum aggregation: 136722 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 302960 Unique aggregates announced from the ARIN address blocks: 147714 ARIN Region origin ASes present in the Internet Routing Table: 19431 ARIN Prefixes per ASN: 15.59 ARIN Region origin ASes announcing only one prefix: 7116 ARIN Region transit ASes present in the Internet Routing Table: 1969 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: 5588 Number of ARIN addresses announced to Internet: 1347590912 Equivalent to 80 /8s, 82 /16s and 155 /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: 290630 Total RIPE prefixes after maximum aggregation: 143443 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 293891 Unique aggregates announced from the RIPE address blocks: 191557 RIPE Region origin ASes present in the Internet Routing Table: 29491 RIPE Prefixes per ASN: 9.97 RIPE Region origin ASes announcing only one prefix: 12222 RIPE Region transit ASes present in the Internet Routing Table: 4077 Average RIPE Region AS path length visible: 5.4 Max RIPE Region AS path length visible: 38 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13422 Number of RIPE addresses announced to Internet: 734155776 Equivalent to 43 /8s, 194 /16s and 84 /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: 130021 Total LACNIC prefixes after maximum aggregation: 30803 LACNIC Deaggregation factor: 4.22 Prefixes being announced from the LACNIC address blocks: 124420 Unique aggregates announced from the LACNIC address blocks: 50312 LACNIC Region origin ASes present in the Internet Routing Table: 11393 LACNIC Prefixes per ASN: 10.92 LACNIC Region origin ASes announcing only one prefix: 2719 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: 9441 Number of LACNIC addresses announced to Internet: 169683456 Equivalent to 10 /8s, 29 /16s and 42 /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: 37145 Total AfriNIC prefixes after maximum aggregation: 7049 AfriNIC Deaggregation factor: 5.27 Prefixes being announced from the AfriNIC address blocks: 54674 Unique aggregates announced from the AfriNIC address blocks: 19367 AfriNIC Region origin ASes present in the Internet Routing Table: 2024 AfriNIC Prefixes per ASN: 27.01 AfriNIC Region origin ASes announcing only one prefix: 729 AfriNIC Region transit ASes present in the Internet Routing Table: 382 Average AfriNIC Region AS path length visible: 5.9 Max AfriNIC Region AS path length visible: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1390 Number of AfriNIC addresses announced to Internet: 104289280 Equivalent to 6 /8s, 55 /16s and 84 /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 13894 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5883 826 481 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4935 551 328 BBIL-AP BHARTI Airtel Ltd., IN 18403 4541 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4066 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3694 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3542 887 177 CMNET-JIANGSU-AP China Mobile communicati 17561 3450 217 600 LCS-AS-AP LARUS Limited, HK 45899 3364 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2737 744 736 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 14964 41323 5693 AMAZON-02 - Amazon.com, Inc., US 22773 4790 3116 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4591 305 1089 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3717 1305 75 SHAW - Shaw Communications, CA 396982 3343 4865 507 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3139 54728 2390 DNIC-AS-00749 - United States Department 36352 2912 222 913 AS-COLOCROSSING - HostPapa, US 7029 2637 2558 894 WINDSTREAM - Windstream Communications LL 30036 2606 359 471 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 7129 1711 149 UNI2-AS, ES 39891 4975 307 72 ALJAWWALSTC-AS, SA 20940 3917 3389 110 AKAMAI-ASN1, NL 9009 3914 360 2321 M247, RO 12389 3140 2321 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2794 205 2065 CDNEXT, GB 34984 2491 367 584 TELLCOM-AS, TR 8452 1689 1852 14 TE-AS TE-AS, EG 203020 1653 252 830 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 12745 3254 632 UNINET, MX 10620 3434 450 1103 Telmex Colombia S.A., CO 13999 2363 498 346 Mega Cable, S.A. de C.V., MX 11830 1937 369 65 Instituto Costarricense de Electricidad y 11664 1450 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1367 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1226 371 22 INTEGRATEL PERU S.A.A., PE 22884 1074 70 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 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 36992 1860 1532 340 ETISALAT-MISR, EG 24835 1807 649 36 RAYA-AS, EG 24863 1270 389 16 LINKdotNET-AS, EG 36935 1262 523 45 Vodafone-, EG 36903 1231 555 97 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1077 70 18 ORANGE-COTE-IVOIRE, CI 20011 643 173 262 NTT-DATA-Inc, ZA 328608 614 56 160 Africa-on-Cloud-AS, ZA 3741 553 724 322 NTT-DATA-Inc, ZA 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 14964 41323 5693 AMAZON-02 - Amazon.com, Inc., US 9808 13894 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12745 3254 632 UNINET, MX 12479 7129 1711 149 UNI2-AS, ES 7545 5883 826 481 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 307 72 ALJAWWALSTC-AS, SA 9498 4935 551 328 BBIL-AP BHARTI Airtel Ltd., IN 22773 4790 3116 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4591 305 1089 CABLEONE - CABLE ONE, INC., US 18403 4541 347 24 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 13894 13773 CHINAMOBILE-CN China Mobile Communications Grou 8151 12745 12113 UNINET, MX 12479 7129 6980 UNI2-AS, ES 7545 5883 5402 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 4903 ALJAWWALSTC-AS, SA 9498 4935 4607 BBIL-AP BHARTI Airtel Ltd., IN 18403 4541 4517 FPT-AS-AP FPT Telecom Company, VN 22773 4790 4425 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4066 4038 VIETEL-AS-AP Viettel Group, VN 20940 3917 3807 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 /12:297 /13:583 /14:1190 /15:2114 /16:13597 /17:8296 /18:13358 /19:25485 /20:45773 /21:52391 /22:113358 /23:108432 /24:661805 /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 6964 12745 UNINET, MX 12479 6066 7129 UNI2-AS, ES 39891 3660 4975 ALJAWWALSTC-AS, SA 6327 3498 3717 SHAW - Shaw Communications, CA 11492 3468 4591 CABLEONE - CABLE ONE, INC., US 22773 3065 4790 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2699 14964 AMAZON-02 - Amazon.com, Inc., US 30036 2260 2606 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2238 3434 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) ---------------------------------------------- 1:2505 2:2078 3:1000 4:5 5:5112 6:201 7:6 8:1471 9:59 11:172 12:1147 13:707 14:2702 15:466 16:209 17:443 18:916 20:608 21:4 22:188 23:8393 24:2772 25:2 27:2823 28:1 29:19 31:3567 32:36 34:85 35:283 36:4774 37:4445 38:9664 39:1298 40:442 41:4572 42:2171 43:3162 44:455 45:19851 46:4887 47:413 48:129 49:2235 50:2008 51:721 52:1328 54:288 55:1104 56:11 57:323 58:2339 59:1371 60:1175 61:3155 62:3126 63:1690 64:6389 65:2149 66:6131 67:3272 68:1509 69:4217 70:1055 71:616 72:3187 74:3056 75:1501 76:598 77:2947 78:2040 79:1792 80:2345 81:2244 82:4156 83:1459 84:2159 85:3838 86:1096 87:2517 88:1337 89:4778 90:796 91:8461 92:2787 93:3040 94:4401 95:4739 96:1447 97:309 98:947 99:833 100:70 101:1462 102:4564 103:32523 104:5393 105:851 106:901 107:2947 108:1267 109:4284 110:2282 111:4124 112:3185 113:1987 114:2385 115:2327 116:2094 117:3490 118:3043 119:2047 120:2733 121:1556 122:3011 123:2304 124:1654 125:2986 126:158 128:1600 129:983 130:1681 131:2499 132:886 133:486 134:1720 135:616 136:1481 137:1563 138:3399 139:1633 140:1774 141:1753 142:2573 143:2045 144:1786 145:638 146:2191 147:2248 148:2797 149:3150 150:1340 151:2906 152:2338 153:1674 154:9609 155:2297 156:5154 157:2344 158:1578 159:2870 160:3835 161:1972 162:4078 163:2593 164:2425 165:2671 166:1281 167:2322 168:4097 169:868 170:5612 171:1138 172:4805 173:3466 174:883 175:1355 176:3958 177:5047 178:4406 179:2383 180:3059 181:4566 182:4045 183:2839 184:2022 185:21938 186:6172 187:5062 188:4516 189:4539 190:9906 191:2001 192:11530 193:9647 194:7892 195:5834 196:3402 197:3225 198:6291 199:6043 200:8274 201:6405 202:10666 203:10666 204:4804 205:3755 206:4441 207:3998 208:4370 209:5493 210:4772 211:2688 212:5089 213:4133 214:1040 215:47 216:7310 217:3614 218:1709 219:413 220:2187 221:1320 222:939 223:3443 End of report