IPv4 R&E Routing Table Report 21:35 GMT Thu 16 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: 1040676 Prefixes after maximum aggregation (per Origin AS): 399387 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 514034 Number of IPv4 prefixes with a valid ROA: 632440 Number of IPv4 prefixes with an invalid ROA: 133 Number of IPv4 prefixes with no ROA: 408103 Total ASes present in the Internet Routing Table: 78349 Prefixes per ASN: 13.28 Origin-only ASes present in the Internet Routing Table: 67090 Origin ASes announcing only one prefix: 27378 Transit ASes present in the Internet Routing Table: 11259 Transit-only ASes present in the Internet Routing Table: 584 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: 1219 Number of instances of unregistered ASNs: 1249 Number of 32-bit ASNs allocated by the RIRs: 49323 Number of 32-bit ASNs visible in the Routing Table: 40372 Prefixes from 32-bit ASNs in the Routing Table: 227221 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: 535 Number of addresses announced to Internet: 3103610880 Equivalent to 184 /8s, 253 /16s and 88 /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: 339243 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282115 Total APNIC prefixes after maximum aggregation: 82370 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 269235 Unique aggregates announced from the APNIC address blocks: 107563 APNIC Region origin ASes present in the Internet Routing Table: 15149 APNIC Prefixes per ASN: 17.77 APNIC Region origin ASes announcing only one prefix: 4659 APNIC Region transit ASes present in the Internet Routing Table: 2044 Average APNIC Region AS path length visible: 5.1 Max APNIC Region AS path length visible: 44 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10718 Number of APNIC addresses announced to Internet: 748724480 Equivalent to 44 /8s, 160 /16s and 161 /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: 303840 Total ARIN prefixes after maximum aggregation: 135862 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 303448 Unique aggregates announced from the ARIN address blocks: 147121 ARIN Region origin ASes present in the Internet Routing Table: 19429 ARIN Prefixes per ASN: 15.62 ARIN Region origin ASes announcing only one prefix: 7112 ARIN Region transit ASes present in the Internet Routing Table: 1976 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: 5557 Number of ARIN addresses announced to Internet: 1348150784 Equivalent to 80 /8s, 91 /16s and 38 /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: 288239 Total RIPE prefixes after maximum aggregation: 142603 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 290727 Unique aggregates announced from the RIPE address blocks: 189321 RIPE Region origin ASes present in the Internet Routing Table: 29398 RIPE Prefixes per ASN: 9.89 RIPE Region origin ASes announcing only one prefix: 12184 RIPE Region transit ASes present in the Internet Routing Table: 4045 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: 13291 Number of RIPE addresses announced to Internet: 733314048 Equivalent to 43 /8s, 181 /16s and 124 /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: 128193 Total LACNIC prefixes after maximum aggregation: 30783 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 123063 Unique aggregates announced from the LACNIC address blocks: 50249 LACNIC Region origin ASes present in the Internet Routing Table: 11359 LACNIC Prefixes per ASN: 10.83 LACNIC Region origin ASes announcing only one prefix: 2688 LACNIC Region transit ASes present in the Internet Routing Table: 2609 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: 9419 Number of LACNIC addresses announced to Internet: 169828864 Equivalent to 10 /8s, 31 /16s and 98 /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: 37070 Total AfriNIC prefixes after maximum aggregation: 7035 AfriNIC Deaggregation factor: 5.27 Prefixes being announced from the AfriNIC address blocks: 53667 Unique aggregates announced from the AfriNIC address blocks: 19377 AfriNIC Region origin ASes present in the Internet Routing Table: 2022 AfriNIC Prefixes per ASN: 26.54 AfriNIC Region origin ASes announcing only one prefix: 735 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: 53 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1387 Number of AfriNIC addresses announced to Internet: 103366144 Equivalent to 6 /8s, 41 /16s and 62 /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 13829 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5911 827 494 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4915 550 331 BBIL-AP BHARTI Airtel Ltd., IN 18403 4571 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4061 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3680 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3490 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3349 1868 95 VNPT-AS-VN VNPT Corp, VN 24560 3006 855 529 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2887 182 491 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 14730 41276 5671 AMAZON-02 - Amazon.com, Inc., US 22773 4773 3116 363 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4669 310 1040 CABLEONE - CABLE ONE, INC., US 7155 3870 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3730 1305 75 SHAW - Shaw Communications, CA 396982 3323 4859 493 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3306 8763 814 COGENT-174 - Cogent Communications, LLC, 749 3139 54728 2390 DNIC-AS-00749 - United States Department 36352 2728 223 909 AS-COLOCROSSING - HostPapa, US 30036 2674 367 304 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 7173 1711 149 UNI2-AS, ES 39891 4943 305 72 ALJAWWALSTC-AS, SA 20940 3957 3389 111 AKAMAI-ASN1, NL 9009 3821 353 2245 M247, RO 12389 3147 2318 874 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2744 199 2024 CDNEXT, GB 34984 2451 365 575 TELLCOM-AS, TR 8452 1717 1852 14 TE-AS TE-AS, EG 203020 1664 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 12931 3321 622 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2435 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 1072 2392 100 TIM SA, BR 22884 1057 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 1533 336 ETISALAT-MISR, EG 24863 1282 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1224 521 42 Vodafone-, EG 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 546 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 14730 41276 5671 AMAZON-02 - Amazon.com, Inc., US 9808 13829 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12931 3321 622 UNINET, MX 12479 7173 1711 149 UNI2-AS, ES 7545 5911 827 494 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 305 72 ALJAWWALSTC-AS, SA 9498 4915 550 331 BBIL-AP BHARTI Airtel Ltd., IN 22773 4773 3116 363 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4669 310 1040 CABLEONE - CABLE ONE, INC., US 18403 4571 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 13829 13709 CHINAMOBILE-CN China Mobile Communications Grou 8151 12931 12309 UNINET, MX 12479 7173 7024 UNI2-AS, ES 7545 5911 5417 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 4871 ALJAWWALSTC-AS, SA 9498 4915 4584 BBIL-AP BHARTI Airtel Ltd., IN 18403 4571 4546 FPT-AS-AP FPT Telecom Company, VN 22773 4773 4410 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4061 4033 VIETEL-AS-AP Viettel Group, VN 20940 3957 3846 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 198924 UNALLOCATED 2.26.126.0/24 137409 GSLNETWORKS-AS-AP GSL N 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 /14:1192 /15:2113 /16:13601 /17:8307 /18:13353 /19:25474 /20:45774 /21:52412 /22:113650 /23:107433 /24:656320 /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 7072 12931 UNINET, MX 12479 6114 7173 UNI2-AS, ES 39891 3628 4943 ALJAWWALSTC-AS, SA 11492 3531 4669 CABLEONE - CABLE ONE, INC., US 6327 3513 3730 SHAW - Shaw Communications, CA 22773 3052 4773 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2824 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2645 14730 AMAZON-02 - Amazon.com, Inc., US 30036 2326 2674 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) ---------------------------------------------- 1:2489 2:1868 3:1010 4:5 5:5106 6:197 7:6 8:1489 9:39 11:172 12:1185 13:696 14:2682 15:458 16:186 17:424 18:916 20:602 21:4 22:188 23:8214 24:2778 25:2 27:2827 28:1 29:19 31:3452 32:36 34:87 35:283 36:4679 37:4453 38:10173 39:1285 40:417 41:4535 42:2186 43:3056 44:446 45:19713 46:4873 47:409 48:125 49:2230 50:2014 51:642 52:1320 54:285 55:1109 56:11 57:324 58:2337 59:1378 60:1173 61:3130 62:3125 63:1724 64:6315 65:2130 66:6093 67:3262 68:1501 69:4208 70:1053 71:621 72:3199 74:3025 75:1487 76:588 77:2941 78:1978 79:1793 80:2344 81:2232 82:4087 83:1445 84:2146 85:3815 86:1086 87:2377 88:1341 89:4731 90:799 91:8423 92:2820 93:3018 94:4340 95:4676 96:1455 97:314 98:939 99:813 100:68 101:1470 102:4504 103:32393 104:5361 105:854 106:913 107:2891 108:1248 109:4243 110:2259 111:4112 112:3162 113:1963 114:2276 115:2319 116:2165 117:3506 118:2954 119:2084 120:2706 121:1554 122:2994 123:2289 124:1652 125:2976 126:126 128:1620 129:973 130:1641 131:2476 132:831 133:472 134:1670 135:607 136:1592 137:1544 138:3321 139:1642 140:1764 141:1726 142:2539 143:2103 144:1757 145:644 146:2209 147:2232 148:2774 149:3125 150:1365 151:2835 152:2324 153:1396 154:9846 155:2300 156:4453 157:2299 158:1542 159:2860 160:3814 161:1955 162:4036 163:2498 164:2039 165:2641 166:1270 167:2299 168:4031 169:862 170:5576 171:1128 172:4633 173:3484 174:883 175:1354 176:3869 177:4875 178:4353 179:2318 180:3056 181:4549 182:4024 183:2840 184:2035 185:21808 186:5784 187:4976 188:4572 189:4589 190:9838 191:1562 192:11479 193:9635 194:7872 195:5819 196:3396 197:3260 198:6286 199:6062 200:8207 201:6378 202:10719 203:10656 204:4816 205:3718 206:4556 207:3989 208:4391 209:5453 210:4762 211:2680 212:5092 213:4133 214:1043 215:47 216:7289 217:3574 218:1700 219:414 220:2194 221:1313 222:938 223:3406 End of report