IPv4 R&E Routing Table Report 21:35 GMT Tue 14 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: 1040538 Prefixes after maximum aggregation (per Origin AS): 399296 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 513876 Number of IPv4 prefixes with a valid ROA: 631770 Number of IPv4 prefixes with an invalid ROA: 137 Number of IPv4 prefixes with no ROA: 408631 Total ASes present in the Internet Routing Table: 78338 Prefixes per ASN: 13.28 Origin-only ASes present in the Internet Routing Table: 67072 Origin ASes announcing only one prefix: 27381 Transit ASes present in the Internet Routing Table: 11266 Transit-only ASes present in the Internet Routing Table: 582 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: 1093 Number of instances of unregistered ASNs: 1123 Number of 32-bit ASNs allocated by the RIRs: 49329 Number of 32-bit ASNs visible in the Routing Table: 40353 Prefixes from 32-bit ASNs in the Routing Table: 227233 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: 420 Number of addresses announced to Internet: 3103537408 Equivalent to 184 /8s, 252 /16s and 57 /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: 338997 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282558 Total APNIC prefixes after maximum aggregation: 82400 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269538 Unique aggregates announced from the APNIC address blocks: 107727 APNIC Region origin ASes present in the Internet Routing Table: 15164 APNIC Prefixes per ASN: 17.77 APNIC Region origin ASes announcing only one prefix: 4664 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: 29 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10733 Number of APNIC addresses announced to Internet: 748989696 Equivalent to 44 /8s, 164 /16s and 173 /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: 303791 Total ARIN prefixes after maximum aggregation: 135884 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 303367 Unique aggregates announced from the ARIN address blocks: 147008 ARIN Region origin ASes present in the Internet Routing Table: 19423 ARIN Prefixes per ASN: 15.62 ARIN Region origin ASes announcing only one prefix: 7107 ARIN Region transit ASes present in the Internet Routing Table: 1975 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: 5554 Number of ARIN addresses announced to Internet: 1347892480 Equivalent to 80 /8s, 87 /16s and 53 /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: 287991 Total RIPE prefixes after maximum aggregation: 142396 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 290495 Unique aggregates announced from the RIPE address blocks: 189119 RIPE Region origin ASes present in the Internet Routing Table: 29377 RIPE Prefixes per ASN: 9.89 RIPE Region origin ASes announcing only one prefix: 12166 RIPE Region transit ASes present in the Internet Routing Table: 4051 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: 13267 Number of RIPE addresses announced to Internet: 733200128 Equivalent to 43 /8s, 179 /16s and 191 /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: 128044 Total LACNIC prefixes after maximum aggregation: 30861 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 122943 Unique aggregates announced from the LACNIC address blocks: 50286 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: 2709 LACNIC Region transit ASes present in the Internet Routing Table: 2613 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: 9416 Number of LACNIC addresses announced to Internet: 169890304 Equivalent to 10 /8s, 32 /16s and 82 /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: 37061 Total AfriNIC prefixes after maximum aggregation: 7059 AfriNIC Deaggregation factor: 5.25 Prefixes being announced from the AfriNIC address blocks: 53774 Unique aggregates announced from the AfriNIC address blocks: 19376 AfriNIC Region origin ASes present in the Internet Routing Table: 2019 AfriNIC Prefixes per ASN: 26.63 AfriNIC Region origin ASes announcing only one prefix: 735 AfriNIC Region transit ASes present in the Internet Routing Table: 388 Average AfriNIC Region AS path length visible: 6.1 Max AfriNIC Region AS path length visible: 53 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1383 Number of AfriNIC addresses announced to Internet: 103369984 Equivalent to 6 /8s, 41 /16s and 77 /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 13833 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5915 828 498 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4912 550 329 BBIL-AP BHARTI Airtel Ltd., IN 18403 4565 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4066 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3679 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3487 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3349 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3019 190 492 LCS-AS-AP LARUS Limited, HK 24560 3013 856 523 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 14665 41275 5675 AMAZON-02 - Amazon.com, Inc., US 22773 4783 3116 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4667 310 1039 CABLEONE - CABLE ONE, INC., US 7155 3870 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3723 1305 75 SHAW - Shaw Communications, CA 396982 3322 4859 494 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3277 8764 818 COGENT-174 - Cogent Communications, LLC, 749 3141 54728 2392 DNIC-AS-00749 - United States Department 36352 2720 222 903 AS-COLOCROSSING - HostPapa, US 16625 2705 1217 2096 AKAMAI-AS - Akamai Technologies, Inc., 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 7161 1711 149 UNI2-AS, ES 39891 4972 306 72 ALJAWWALSTC-AS, SA 20940 3959 3389 111 AKAMAI-ASN1, NL 9009 3829 354 2248 M247, RO 12389 3147 2318 874 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2739 199 2019 CDNEXT, GB 34984 2452 365 574 TELLCOM-AS, TR 8452 1726 1852 14 TE-AS TE-AS, EG 203020 1638 249 810 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 12756 3311 618 UNINET, MX 10620 3430 450 1106 Telmex Colombia S.A., CO 13999 2446 506 345 Mega Cable, S.A. de C.V., MX 11830 1937 369 65 Instituto Costarricense de Electricidad y 11664 1436 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 1244 371 22 INTEGRATEL PERU S.A.A., PE 26615 1074 2392 101 TIM SA, BR 22884 1055 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 2025 648 34 RAYA-AS, EG 36992 1860 1532 341 ETISALAT-MISR, EG 24863 1282 389 16 LINKdotNET-AS, EG 36935 1242 523 45 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1112 1100 11 MOBINIL, EG 29571 1071 78 19 ORANGE-COTE-IVOIRE, CI 20011 643 173 262 NTT-DATA-Inc, ZA 3741 557 724 324 NTT-DATA-Inc, ZA 36914 548 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 14665 41275 5675 AMAZON-02 - Amazon.com, Inc., US 9808 13833 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12756 3311 618 UNINET, MX 12479 7161 1711 149 UNI2-AS, ES 7545 5915 828 498 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 306 72 ALJAWWALSTC-AS, SA 9498 4912 550 329 BBIL-AP BHARTI Airtel Ltd., IN 22773 4783 3116 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4667 310 1039 CABLEONE - CABLE ONE, INC., US 18403 4565 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 13833 13713 CHINAMOBILE-CN China Mobile Communications Grou 8151 12756 12138 UNINET, MX 12479 7161 7012 UNI2-AS, ES 7545 5915 5417 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 4900 ALJAWWALSTC-AS, SA 9498 4912 4583 BBIL-AP BHARTI Airtel Ltd., IN 18403 4565 4540 FPT-AS-AP FPT Telecom Company, VN 22773 4783 4418 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4066 4037 VIETEL-AS-AP Viettel Group, VN 20940 3959 3848 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 /13:585 /14:1192 /15:2112 /16:13610 /17:8307 /18:13331 /19:25466 /20:45768 /21:52356 /22:113687 /23:107375 /24:656287 /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 6943 12756 UNINET, MX 12479 6104 7161 UNI2-AS, ES 39891 3656 4972 ALJAWWALSTC-AS, SA 11492 3529 4667 CABLEONE - CABLE ONE, INC., US 6327 3505 3723 SHAW - Shaw Communications, CA 22773 3056 4783 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2824 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2644 14665 AMAZON-02 - Amazon.com, Inc., US 30036 2324 2672 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2234 3430 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) ---------------------------------------------- 1:2496 2:1873 3:1002 4:5 5:5105 6:197 7:6 8:1491 9:39 11:172 12:1184 13:693 14:2686 15:458 16:176 17:423 18:914 20:602 21:4 22:188 23:8209 24:2777 25:2 27:2829 28:1 29:19 31:3466 32:36 34:87 35:283 36:4671 37:4458 38:10182 39:1281 40:414 41:4540 42:2175 43:3057 44:448 45:19718 46:4873 47:408 48:125 49:2229 50:2021 51:621 52:1307 54:282 55:1113 56:11 57:323 58:2342 59:1377 60:1174 61:3128 62:3128 63:1725 64:6315 65:2135 66:6085 67:3262 68:1501 69:4207 70:1057 71:620 72:3192 74:3022 75:1491 76:586 77:2935 78:1974 79:1793 80:2348 81:2231 82:4052 83:1447 84:2141 85:3809 86:1092 87:2347 88:1340 89:4727 90:781 91:8431 92:2821 93:3015 94:4345 95:4666 96:1453 97:315 98:942 99:812 100:68 101:1466 102:4496 103:32482 104:5367 105:853 106:912 107:2881 108:1244 109:4231 110:2280 111:4109 112:3168 113:1963 114:2272 115:2334 116:2160 117:3504 118:3000 119:2084 120:2707 121:1559 122:2997 123:2294 124:1656 125:2974 126:125 128:1625 129:975 130:1641 131:2452 132:841 133:472 134:1666 135:610 136:1618 137:1543 138:3326 139:1641 140:1752 141:1722 142:2534 143:2114 144:1750 145:646 146:2208 147:2219 148:2774 149:3110 150:1363 151:2805 152:2326 153:1399 154:9852 155:2296 156:4577 157:2302 158:1541 159:2858 160:3817 161:1957 162:4026 163:2503 164:2035 165:2643 166:1273 167:2301 168:4044 169:864 170:5564 171:1128 172:4598 173:3482 174:879 175:1362 176:3873 177:4874 178:4356 179:2301 180:3058 181:4521 182:4012 183:2843 184:2032 185:21812 186:5785 187:4943 188:4600 189:4504 190:9840 191:1576 192:11478 193:9631 194:7878 195:5830 196:3390 197:3262 198:6283 199:6071 200:8204 201:6392 202:10719 203:10666 204:4807 205:3743 206:4551 207:3991 208:4390 209:5455 210:4768 211:2682 212:5033 213:4140 214:1044 215:47 216:7290 217:3578 218:1701 219:414 220:2197 221:1312 222:939 223:3407 End of report