IPv4 R&E Routing Table Report 21:35 GMT Mon 04 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: 1044563 Prefixes after maximum aggregation (per Origin AS): 400758 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 515730 Number of IPv4 prefixes with a valid ROA: 640091 Number of IPv4 prefixes with an invalid ROA: 156 Number of IPv4 prefixes with no ROA: 404316 Total ASes present in the Internet Routing Table: 78457 Prefixes per ASN: 13.31 Origin-only ASes present in the Internet Routing Table: 67162 Origin ASes announcing only one prefix: 27406 Transit ASes present in the Internet Routing Table: 11295 Transit-only ASes present in the Internet Routing Table: 589 Paths with bogon ASNs present in the IPv4 Routing Table: 284 Average AS path length visible in the Internet Routing Table: 5.4 Max AS path length visible: 69 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 1097 Number of instances of unregistered ASNs: 1127 Number of 32-bit ASNs allocated by the RIRs: 49617 Number of 32-bit ASNs visible in the Routing Table: 40526 Prefixes from 32-bit ASNs in the Routing Table: 228818 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: 427 Number of addresses announced to Internet: 3103532288 Equivalent to 184 /8s, 252 /16s and 37 /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: 340935 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 283715 Total APNIC prefixes after maximum aggregation: 82676 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269961 Unique aggregates announced from the APNIC address blocks: 107754 APNIC Region origin ASes present in the Internet Routing Table: 15181 APNIC Prefixes per ASN: 17.78 APNIC Region origin ASes announcing only one prefix: 4648 APNIC Region transit ASes present in the Internet Routing Table: 2052 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: 10757 Number of APNIC addresses announced to Internet: 747608320 Equivalent to 44 /8s, 143 /16s and 153 /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: 303619 Total ARIN prefixes after maximum aggregation: 136557 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 302938 Unique aggregates announced from the ARIN address blocks: 147479 ARIN Region origin ASes present in the Internet Routing Table: 19438 ARIN Prefixes per ASN: 15.58 ARIN Region origin ASes announcing only one prefix: 7108 ARIN Region transit ASes present in the Internet Routing Table: 1970 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: 5567 Number of ARIN addresses announced to Internet: 1348197632 Equivalent to 80 /8s, 91 /16s and 221 /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: 289905 Total RIPE prefixes after maximum aggregation: 143002 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 293045 Unique aggregates announced from the RIPE address blocks: 190773 RIPE Region origin ASes present in the Internet Routing Table: 29456 RIPE Prefixes per ASN: 9.95 RIPE Region origin ASes announcing only one prefix: 12205 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: 46 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13377 Number of RIPE addresses announced to Internet: 733305600 Equivalent to 43 /8s, 181 /16s and 91 /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: 128934 Total LACNIC prefixes after maximum aggregation: 30813 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 123384 Unique aggregates announced from the LACNIC address blocks: 50323 LACNIC Region origin ASes present in the Internet Routing Table: 11392 LACNIC Prefixes per ASN: 10.83 LACNIC Region origin ASes announcing only one prefix: 2713 LACNIC Region transit ASes present in the Internet Routing Table: 2604 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: 9435 Number of LACNIC addresses announced to Internet: 169902080 Equivalent to 10 /8s, 32 /16s and 128 /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: 37293 Total AfriNIC prefixes after maximum aggregation: 7027 AfriNIC Deaggregation factor: 5.31 Prefixes being announced from the AfriNIC address blocks: 54807 Unique aggregates announced from the AfriNIC address blocks: 19032 AfriNIC Region origin ASes present in the Internet Routing Table: 2021 AfriNIC Prefixes per ASN: 27.12 AfriNIC Region origin ASes announcing only one prefix: 732 AfriNIC Region transit ASes present in the Internet Routing Table: 392 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: 1390 Number of AfriNIC addresses announced to Internet: 104322560 Equivalent to 6 /8s, 55 /16s and 214 /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 13862 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5884 826 483 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4934 551 321 BBIL-AP BHARTI Airtel Ltd., IN 18403 4544 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4065 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3677 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 17561 3553 223 598 LCS-AS-AP LARUS Limited, HK 56046 3538 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3359 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2902 813 660 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 14823 41291 5700 AMAZON-02 - Amazon.com, Inc., US 22773 4759 3114 351 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4652 309 1048 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3726 1305 75 SHAW - Shaw Communications, CA 396982 3337 4864 506 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3138 54728 2389 DNIC-AS-00749 - United States Department 36352 2721 222 905 AS-COLOCROSSING - HostPapa, US 7029 2636 2561 923 WINDSTREAM - Windstream Communications LL 30036 2607 358 464 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 7174 1711 149 UNI2-AS, ES 39891 4943 305 72 ALJAWWALSTC-AS, SA 20940 3919 3389 111 AKAMAI-ASN1, NL 9009 3838 353 2260 M247, RO 12389 3144 2321 873 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2764 202 2036 CDNEXT, GB 34984 2453 365 581 TELLCOM-AS, TR 8452 1709 1852 14 TE-AS TE-AS, EG 203020 1655 252 831 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 12850 3294 633 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2429 506 354 Mega Cable, S.A. de C.V., MX 11830 1936 369 65 Instituto Costarricense de Electricidad y 11664 1446 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1375 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1228 379 23 INTEGRATEL PERU S.A.A., PE 26615 1073 2392 100 TIM SA, BR 22884 1072 70 363 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 2027 649 36 RAYA-AS, EG 36992 1860 1533 334 ETISALAT-MISR, EG 24863 1271 389 16 LINKdotNET-AS, EG 36935 1255 522 44 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1070 70 18 ORANGE-COTE-IVOIRE, CI 20011 643 173 262 NTT-DATA-Inc, ZA 328608 572 53 155 Africa-on-Cloud-AS, ZA 36914 559 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 14823 41291 5700 AMAZON-02 - Amazon.com, Inc., US 9808 13862 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12850 3294 633 UNINET, MX 12479 7174 1711 149 UNI2-AS, ES 7545 5884 826 483 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 305 72 ALJAWWALSTC-AS, SA 9498 4934 551 321 BBIL-AP BHARTI Airtel Ltd., IN 22773 4759 3114 351 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4652 309 1048 CABLEONE - CABLE ONE, INC., US 18403 4544 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 13862 13741 CHINAMOBILE-CN China Mobile Communications Grou 8151 12850 12217 UNINET, MX 12479 7174 7025 UNI2-AS, ES 7545 5884 5401 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 4871 ALJAWWALSTC-AS, SA 9498 4934 4613 BBIL-AP BHARTI Airtel Ltd., IN 18403 4544 4519 FPT-AS-AP FPT Telecom Company, VN 22773 4759 4408 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4065 4037 VIETEL-AS-AP Viettel Group, VN 20940 3919 3808 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 /13:584 /14:1191 /15:2113 /16:13614 /17:8311 /18:13360 /19:25497 /20:45804 /21:52435 /22:113651 /23:107856 /24:659685 /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 7046 12850 UNINET, MX 12479 6115 7174 UNI2-AS, ES 39891 3628 4943 ALJAWWALSTC-AS, SA 11492 3517 4652 CABLEONE - CABLE ONE, INC., US 6327 3507 3726 SHAW - Shaw Communications, CA 22773 3054 4759 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2667 14823 AMAZON-02 - Amazon.com, Inc., US 30036 2261 2607 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) ---------------------------------------------- 1:2481 2:2033 3:1002 4:5 5:5091 6:199 7:6 8:1491 9:43 11:172 12:1183 13:701 14:2703 15:462 16:208 17:441 18:922 20:606 21:4 22:188 23:8243 24:2772 25:2 27:2822 28:1 29:19 31:3488 32:35 34:87 35:284 36:4732 37:4450 38:9731 39:1295 40:438 41:4569 42:2174 43:3116 44:452 45:19766 46:4881 47:413 48:127 49:2234 50:2013 51:677 52:1321 54:280 55:1203 56:11 57:323 58:2340 59:1376 60:1175 61:3134 62:3119 63:1707 64:6341 65:2139 66:6130 67:3266 68:1499 69:4218 70:1051 71:616 72:3175 74:3047 75:1501 76:591 77:2928 78:2016 79:1794 80:2350 81:2236 82:4155 83:1454 84:2147 85:3841 86:1090 87:2490 88:1333 89:4799 90:811 91:8470 92:2826 93:3024 94:4401 95:4729 96:1454 97:316 98:942 99:825 100:70 101:1463 102:4509 103:32499 104:5377 105:863 106:900 107:2881 108:1256 109:4248 110:2281 111:4125 112:3175 113:1975 114:2281 115:2334 116:2145 117:3492 118:3042 119:2062 120:2714 121:1555 122:2993 123:2314 124:1656 125:2987 126:126 128:1612 129:978 130:1658 131:2485 132:892 133:486 134:1668 135:606 136:1542 137:1555 138:3352 139:1624 140:1768 141:1740 142:2553 143:2083 144:1774 145:636 146:2194 147:2249 148:2799 149:3081 150:1370 151:2900 152:2337 153:1569 154:9889 155:2304 156:4985 157:2334 158:1576 159:2863 160:3827 161:1946 162:4058 163:2544 164:2397 165:2663 166:1282 167:2307 168:4013 169:873 170:5576 171:1134 172:4775 173:3454 174:880 175:1355 176:3874 177:4881 178:4387 179:2320 180:3051 181:4566 182:4029 183:2833 184:2016 185:21906 186:6071 187:5000 188:4545 189:4557 190:9845 191:1680 192:11489 193:9627 194:7893 195:5825 196:3403 197:3245 198:6281 199:6063 200:8259 201:6408 202:10688 203:10666 204:4796 205:3751 206:4550 207:4014 208:4385 209:5498 210:4768 211:2687 212:5093 213:4121 214:1047 215:47 216:7301 217:3600 218:1700 219:414 220:2191 221:1317 222:939 223:3433 End of report