IPv4 R&E Routing Table Report 21:35 GMT Tue 21 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: 1041275 Prefixes after maximum aggregation (per Origin AS): 399713 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 514843 Number of IPv4 prefixes with a valid ROA: 633652 Number of IPv4 prefixes with an invalid ROA: 133 Number of IPv4 prefixes with no ROA: 407490 Total ASes present in the Internet Routing Table: 78397 Prefixes per ASN: 13.28 Origin-only ASes present in the Internet Routing Table: 67137 Origin ASes announcing only one prefix: 27400 Transit ASes present in the Internet Routing Table: 11260 Transit-only ASes present in the Internet Routing Table: 588 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: 1168 Number of instances of unregistered ASNs: 1198 Number of 32-bit ASNs allocated by the RIRs: 49405 Number of 32-bit ASNs visible in the Routing Table: 40420 Prefixes from 32-bit ASNs in the Routing Table: 227517 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: 493 Number of addresses announced to Internet: 3103447040 Equivalent to 184 /8s, 250 /16s and 216 /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: 339319 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282462 Total APNIC prefixes after maximum aggregation: 82449 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269507 Unique aggregates announced from the APNIC address blocks: 107726 APNIC Region origin ASes present in the Internet Routing Table: 15168 APNIC Prefixes per ASN: 17.77 APNIC Region origin ASes announcing only one prefix: 4663 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: 10736 Number of APNIC addresses announced to Internet: 748222464 Equivalent to 44 /8s, 152 /16s and 248 /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: 304134 Total ARIN prefixes after maximum aggregation: 136060 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 303595 Unique aggregates announced from the ARIN address blocks: 147192 ARIN Region origin ASes present in the Internet Routing Table: 19436 ARIN Prefixes per ASN: 15.62 ARIN Region origin ASes announcing only one prefix: 7117 ARIN Region transit ASes present in the Internet Routing Table: 1972 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: 1348169984 Equivalent to 80 /8s, 91 /16s and 113 /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: 288489 Total RIPE prefixes after maximum aggregation: 142622 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 291114 Unique aggregates announced from the RIPE address blocks: 189774 RIPE Region origin ASes present in the Internet Routing Table: 29416 RIPE Prefixes per ASN: 9.90 RIPE Region origin ASes announcing only one prefix: 12183 RIPE Region transit ASes present in the Internet Routing Table: 4057 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: 13314 Number of RIPE addresses announced to Internet: 733593600 Equivalent to 43 /8s, 185 /16s and 192 /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: 127893 Total LACNIC prefixes after maximum aggregation: 30813 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 122723 Unique aggregates announced from the LACNIC address blocks: 50346 LACNIC Region origin ASes present in the Internet Routing Table: 11365 LACNIC Prefixes per ASN: 10.80 LACNIC Region origin ASes announcing only one prefix: 2696 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: 9421 Number of LACNIC addresses announced to Internet: 169788672 Equivalent to 10 /8s, 30 /16s and 197 /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: 37129 Total AfriNIC prefixes after maximum aggregation: 7057 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 53842 Unique aggregates announced from the AfriNIC address blocks: 19423 AfriNIC Region origin ASes present in the Internet Routing Table: 2024 AfriNIC Prefixes per ASN: 26.60 AfriNIC Region origin ASes announcing only one prefix: 741 AfriNIC Region transit ASes present in the Internet Routing Table: 393 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: 103389952 Equivalent to 6 /8s, 41 /16s and 155 /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 13844 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5905 827 489 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4922 551 328 BBIL-AP BHARTI Airtel Ltd., IN 18403 4587 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4059 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3683 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3490 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3358 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2962 838 597 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2914 183 493 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 14801 41293 5657 AMAZON-02 - Amazon.com, Inc., US 22773 4774 3116 363 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4669 310 1040 CABLEONE - CABLE ONE, INC., US 7155 3867 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3724 1305 75 SHAW - Shaw Communications, CA 396982 3322 4859 497 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3239 8763 815 COGENT-174 - Cogent Communications, LLC, 749 3139 54728 2390 DNIC-AS-00749 - United States Department 36352 2719 222 901 AS-COLOCROSSING - HostPapa, US 30036 2661 365 348 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 7161 1711 149 UNI2-AS, ES 39891 4909 302 70 ALJAWWALSTC-AS, SA 20940 3946 3389 111 AKAMAI-ASN1, NL 9009 3829 354 2253 M247, RO 12389 3148 2320 873 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2747 200 2026 CDNEXT, GB 34984 2452 365 575 TELLCOM-AS, TR 8452 1726 1852 14 TE-AS TE-AS, EG 203020 1667 252 832 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 12836 3309 617 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2432 506 347 Mega Cable, S.A. de C.V., MX 11830 1936 369 65 Instituto Costarricense de Electricidad y 11664 1439 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 1248 371 22 INTEGRATEL PERU S.A.A., PE 26615 1071 2392 100 TIM SA, BR 22884 1063 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 2024 648 34 RAYA-AS, EG 36992 1859 1533 336 ETISALAT-MISR, EG 24863 1284 389 16 LINKdotNET-AS, EG 36935 1244 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 643 173 262 NTT-DATA-Inc, ZA 36914 556 82 3 KENET-AS, KE 3741 555 724 322 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 14801 41293 5657 AMAZON-02 - Amazon.com, Inc., US 9808 13844 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12836 3309 617 UNINET, MX 12479 7161 1711 149 UNI2-AS, ES 7545 5905 827 489 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4922 551 328 BBIL-AP BHARTI Airtel Ltd., IN 39891 4909 302 70 ALJAWWALSTC-AS, SA 22773 4774 3116 363 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4669 310 1040 CABLEONE - CABLE ONE, INC., US 18403 4587 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 13844 13723 CHINAMOBILE-CN China Mobile Communications Grou 8151 12836 12219 UNINET, MX 12479 7161 7012 UNI2-AS, ES 7545 5905 5416 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4909 4839 ALJAWWALSTC-AS, SA 9498 4922 4594 BBIL-AP BHARTI Airtel Ltd., IN 18403 4587 4562 FPT-AS-AP FPT Telecom Company, VN 22773 4774 4411 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4059 4031 VIETEL-AS-AP Viettel Group, VN 20940 3946 3835 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 215240 UNALLOCATED 2.26.176.0/24 16276 OVH, FR 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 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 /14:1191 /15:2112 /16:13609 /17:8304 /18:13320 /19:25476 /20:45765 /21:52411 /22:113556 /23:107530 /24:656954 /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 7025 12836 UNINET, MX 12479 6102 7161 UNI2-AS, ES 39891 3595 4909 ALJAWWALSTC-AS, SA 11492 3531 4669 CABLEONE - CABLE ONE, INC., US 6327 3506 3724 SHAW - Shaw Communications, CA 22773 3054 4774 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2821 3867 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2650 14801 AMAZON-02 - Amazon.com, Inc., US 30036 2313 2661 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) ---------------------------------------------- 1:2491 2:1881 3:1011 4:5 5:5100 6:198 7:6 8:1490 9:39 11:172 12:1187 13:708 14:2695 15:459 16:199 17:424 18:922 20:602 21:4 22:188 23:8231 24:2778 25:2 27:2830 28:1 29:19 31:3443 32:36 34:87 35:283 36:4684 37:4432 38:10126 39:1285 40:423 41:4547 42:2203 43:3083 44:449 45:19694 46:4881 47:411 48:127 49:2231 50:2014 51:658 52:1320 54:290 55:1120 56:11 57:324 58:2343 59:1375 60:1174 61:3130 62:3123 63:1722 64:6318 65:2131 66:6111 67:3262 68:1502 69:4218 70:1053 71:621 72:3200 74:3033 75:1501 76:588 77:2938 78:1982 79:1790 80:2342 81:2238 82:4109 83:1447 84:2137 85:3824 86:1091 87:2390 88:1332 89:4759 90:799 91:8435 92:2806 93:3019 94:4356 95:4720 96:1457 97:315 98:942 99:821 100:70 101:1469 102:4513 103:32440 104:5355 105:862 106:912 107:2890 108:1249 109:4259 110:2281 111:4114 112:3166 113:1961 114:2276 115:2330 116:2148 117:3512 118:2993 119:2061 120:2704 121:1553 122:2992 123:2289 124:1652 125:2981 126:126 128:1600 129:972 130:1644 131:2480 132:847 133:486 134:1678 135:607 136:1596 137:1550 138:3327 139:1627 140:1753 141:1723 142:2539 143:2100 144:1765 145:644 146:2210 147:2218 148:2790 149:3153 150:1373 151:2821 152:2326 153:1420 154:9845 155:2314 156:4486 157:2316 158:1560 159:2864 160:3830 161:1959 162:4041 163:2506 164:2040 165:2647 166:1276 167:2306 168:4016 169:866 170:5562 171:1130 172:4762 173:3472 174:882 175:1357 176:3866 177:4810 178:4353 179:2300 180:3064 181:4552 182:4026 183:2827 184:2028 185:21874 186:5768 187:4962 188:4512 189:4521 190:9834 191:1556 192:11483 193:9648 194:7884 195:5822 196:3393 197:3272 198:6283 199:6061 200:8234 201:6390 202:10708 203:10652 204:4800 205:3739 206:4560 207:4009 208:4392 209:5458 210:4769 211:2683 212:5095 213:4135 214:1044 215:47 216:7286 217:3574 218:1702 219:413 220:2199 221:1313 222:932 223:3419 End of report