IPv4 R&E Routing Table Report 21:35 GMT Thu 23 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: 1041695 Prefixes after maximum aggregation (per Origin AS): 399943 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 515126 Number of IPv4 prefixes with a valid ROA: 634623 Number of IPv4 prefixes with an invalid ROA: 133 Number of IPv4 prefixes with no ROA: 406939 Total ASes present in the Internet Routing Table: 78414 Prefixes per ASN: 13.28 Origin-only ASes present in the Internet Routing Table: 67134 Origin ASes announcing only one prefix: 27404 Transit ASes present in the Internet Routing Table: 11280 Transit-only ASes present in the Internet Routing Table: 590 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: 1182 Number of instances of unregistered ASNs: 1212 Number of 32-bit ASNs allocated by the RIRs: 49469 Number of 32-bit ASNs visible in the Routing Table: 40446 Prefixes from 32-bit ASNs in the Routing Table: 227778 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: 490 Number of addresses announced to Internet: 3103634432 Equivalent to 184 /8s, 253 /16s and 180 /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: 339687 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282509 Total APNIC prefixes after maximum aggregation: 82513 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 269570 Unique aggregates announced from the APNIC address blocks: 107804 APNIC Region origin ASes present in the Internet Routing Table: 15171 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: 2046 Average APNIC Region AS path length visible: 5.1 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10743 Number of APNIC addresses announced to Internet: 748854016 Equivalent to 44 /8s, 162 /16s and 155 /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: 304329 Total ARIN prefixes after maximum aggregation: 136150 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 303709 Unique aggregates announced from the ARIN address blocks: 147275 ARIN Region origin ASes present in the Internet Routing Table: 19435 ARIN Prefixes per ASN: 15.63 ARIN Region origin ASes announcing only one prefix: 7109 ARIN Region transit ASes present in the Internet Routing Table: 1979 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: 5564 Number of ARIN addresses announced to Internet: 1348053760 Equivalent to 80 /8s, 89 /16s and 171 /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: 288554 Total RIPE prefixes after maximum aggregation: 142788 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 291302 Unique aggregates announced from the RIPE address blocks: 189995 RIPE Region origin ASes present in the Internet Routing Table: 29430 RIPE Prefixes per ASN: 9.90 RIPE Region origin ASes announcing only one prefix: 12200 RIPE Region transit ASes present in the Internet Routing Table: 4060 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: 13328 Number of RIPE addresses announced to Internet: 733201152 Equivalent to 43 /8s, 179 /16s and 195 /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: 127957 Total LACNIC prefixes after maximum aggregation: 30735 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 122779 Unique aggregates announced from the LACNIC address blocks: 50268 LACNIC Region origin ASes present in the Internet Routing Table: 11371 LACNIC Prefixes per ASN: 10.80 LACNIC Region origin ASes announcing only one prefix: 2697 LACNIC Region transit ASes present in the Internet Routing Table: 2603 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: 9425 Number of LACNIC addresses announced to Internet: 169969152 Equivalent to 10 /8s, 33 /16s and 134 /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: 37164 Total AfriNIC prefixes after maximum aggregation: 7036 AfriNIC Deaggregation factor: 5.28 Prefixes being announced from the AfriNIC address blocks: 53844 Unique aggregates announced from the AfriNIC address blocks: 19408 AfriNIC Region origin ASes present in the Internet Routing Table: 2022 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: 394 Average AfriNIC Region AS path length visible: 6.2 Max AfriNIC Region AS path length visible: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1386 Number of AfriNIC addresses announced to Internet: 103345408 Equivalent to 6 /8s, 40 /16s and 237 /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 13850 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5905 827 489 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4926 551 329 BBIL-AP BHARTI Airtel Ltd., IN 18403 4561 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4057 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3685 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3493 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3359 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2963 838 598 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2915 183 492 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 14774 41292 5664 AMAZON-02 - Amazon.com, Inc., US 22773 4773 3115 362 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4663 309 1046 CABLEONE - CABLE ONE, INC., US 7155 3872 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3725 1305 75 SHAW - Shaw Communications, CA 174 3330 8765 820 COGENT-174 - Cogent Communications, LLC, 396982 3326 4860 500 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3139 54728 2390 DNIC-AS-00749 - United States Department 36352 2718 222 902 AS-COLOCROSSING - HostPapa, US 30036 2658 365 356 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 7168 1711 149 UNI2-AS, ES 39891 4943 305 72 ALJAWWALSTC-AS, SA 20940 3920 3389 111 AKAMAI-ASN1, NL 9009 3836 354 2258 M247, RO 12389 3148 2320 873 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2768 202 2043 CDNEXT, GB 34984 2452 365 575 TELLCOM-AS, TR 8452 1726 1852 14 TE-AS TE-AS, EG 203020 1666 252 832 HOSTROYALE, IN 13188 1603 100 42 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 12856 3319 619 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2433 506 343 Mega Cable, S.A. de C.V., MX 11830 1937 369 65 Instituto Costarricense de Electricidad y 11664 1439 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1374 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 1072 2392 100 TIM SA, BR 22884 1058 70 366 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 1858 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 3741 555 724 322 NTT-DATA-Inc, ZA 36914 552 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 14774 41292 5664 AMAZON-02 - Amazon.com, Inc., US 9808 13850 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12856 3319 619 UNINET, MX 12479 7168 1711 149 UNI2-AS, ES 7545 5905 827 489 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 305 72 ALJAWWALSTC-AS, SA 9498 4926 551 329 BBIL-AP BHARTI Airtel Ltd., IN 22773 4773 3115 362 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4663 309 1046 CABLEONE - CABLE ONE, INC., US 18403 4561 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 13850 13729 CHINAMOBILE-CN China Mobile Communications Grou 8151 12856 12237 UNINET, MX 12479 7168 7019 UNI2-AS, ES 7545 5905 5416 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 4871 ALJAWWALSTC-AS, SA 9498 4926 4597 BBIL-AP BHARTI Airtel Ltd., IN 18403 4561 4536 FPT-AS-AP FPT Telecom Company, VN 22773 4773 4411 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4057 4029 VIETEL-AS-AP Viettel Group, VN 20940 3920 3809 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 198550 UNALLOCATED 2.26.124.0/24 209693 OC-NETWORK, GB 198550 UNALLOCATED 2.26.125.0/24 213702 QWINS-LTD QWINS AS-SET: 198550 UNALLOCATED 2.27.12.0/24 207567 INTEZIONET-AS, GB 198550 UNALLOCATED 2.27.13.0/24 209693 OC-NETWORK, GB 198550 UNALLOCATED 2.27.14.0/24 209693 OC-NETWORK, GB 198550 UNALLOCATED 2.27.15.0/24 213702 QWINS-LTD QWINS AS-SET: 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 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 /14:1194 /15:2110 /16:13604 /17:8308 /18:13350 /19:25483 /20:45714 /21:52400 /22:113562 /23:107549 /24:657374 /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 7034 12856 UNINET, MX 12479 6109 7168 UNI2-AS, ES 39891 3628 4943 ALJAWWALSTC-AS, SA 11492 3528 4663 CABLEONE - CABLE ONE, INC., US 6327 3506 3725 SHAW - Shaw Communications, CA 22773 3053 4773 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2826 3872 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2644 14774 AMAZON-02 - Amazon.com, Inc., US 30036 2311 2658 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 2:1900 3:1005 4:5 5:5101 6:199 7:6 8:1491 9:43 11:172 12:1189 13:698 14:2695 15:460 16:199 17:425 18:923 20:602 21:4 22:188 23:8234 24:2778 25:2 27:2830 28:1 29:19 31:3466 32:36 34:87 35:284 36:4688 37:4437 38:10160 39:1287 40:430 41:4567 42:2184 43:3099 44:448 45:19710 46:4895 47:411 48:127 49:2231 50:2016 51:671 52:1318 54:290 55:991 56:11 57:325 58:2339 59:1374 60:1174 61:3126 62:3069 63:1722 64:6339 65:2134 66:6124 67:3267 68:1501 69:4211 70:1054 71:622 72:3202 74:3036 75:1500 76:590 77:2940 78:1994 79:1791 80:2347 81:2237 82:4157 83:1447 84:2143 85:3838 86:1092 87:2395 88:1332 89:4788 90:803 91:8442 92:2811 93:3021 94:4372 95:4723 96:1453 97:315 98:941 99:818 100:70 101:1461 102:4515 103:32459 104:5368 105:862 106:899 107:2891 108:1245 109:4262 110:2278 111:4123 112:3174 113:1967 114:2276 115:2323 116:2150 117:3515 118:3000 119:2059 120:2706 121:1553 122:2998 123:2300 124:1654 125:2980 126:126 128:1603 129:973 130:1652 131:2479 132:851 133:486 134:1672 135:597 136:1589 137:1546 138:3333 139:1623 140:1757 141:1725 142:2536 143:2108 144:1764 145:643 146:2201 147:2229 148:2783 149:3159 150:1381 151:2822 152:2324 153:1421 154:9831 155:2309 156:4441 157:2310 158:1569 159:2864 160:3825 161:1960 162:4050 163:2520 164:2039 165:2661 166:1253 167:2311 168:4013 169:870 170:5590 171:1132 172:4780 173:3473 174:882 175:1356 176:3877 177:4821 178:4374 179:2314 180:3065 181:4547 182:4024 183:2827 184:2034 185:21857 186:5748 187:4986 188:4545 189:4525 190:9831 191:1589 192:11495 193:9648 194:7884 195:5796 196:3393 197:3263 198:6289 199:6065 200:8221 201:6399 202:10697 203:10646 204:4801 205:3744 206:4651 207:4012 208:4386 209:5475 210:4765 211:2682 212:5100 213:4126 214:1044 215:47 216:7294 217:3585 218:1702 219:413 220:2196 221:1313 222:937 223:3420 End of report