IPv4 R&E Routing Table Report 21:35 GMT Sun 17 Aug, 2025 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: 994881 Prefixes after maximum aggregation (per Origin AS): 385944 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 489724 Number of IPv4 prefixes with a valid ROA: 562612 Number of IPv4 prefixes with an invalid ROA: 187 Number of IPv4 prefixes with no ROA: 432082 Total ASes present in the Internet Routing Table: 77243 Prefixes per ASN: 12.88 Origin-only ASes present in the Internet Routing Table: 66146 Origin ASes announcing only one prefix: 27019 Transit ASes present in the Internet Routing Table: 11097 Transit-only ASes present in the Internet Routing Table: 552 Paths with bogon ASNs present in the IPv4 Routing Table: 290 Average AS path length visible in the Internet Routing Table: 5.4 Max AS path length visible: 53 Max AS path prepend of ASN (212940) 45 Prefixes from unregistered ASNs in the Routing Table: 1215 Number of instances of unregistered ASNs: 1259 Number of 32-bit ASNs allocated by the RIRs: 47200 Number of 32-bit ASNs visible in the Routing Table: 38814 Prefixes from 32-bit ASNs in the Routing Table: 207521 Number of bogon 32-bit ASNs visible in the Routing Table: 106 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 427 Number of addresses announced to Internet: 3107172608 Equivalent to 185 /8s, 51 /16s and 177 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 324216 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 264528 Total APNIC prefixes after maximum aggregation: 78404 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 255493 Unique aggregates announced from the APNIC address blocks: 105147 APNIC Region origin ASes present in the Internet Routing Table: 14770 APNIC Prefixes per ASN: 17.30 APNIC Region origin ASes announcing only one prefix: 4524 APNIC Region transit ASes present in the Internet Routing Table: 1989 Average APNIC Region AS path length visible: 5.2 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10306 Number of APNIC addresses announced to Internet: 749458432 Equivalent to 44 /8s, 171 /16s and 212 /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: 292104 Total ARIN prefixes after maximum aggregation: 132753 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 293729 Unique aggregates announced from the ARIN address blocks: 141879 ARIN Region origin ASes present in the Internet Routing Table: 19274 ARIN Prefixes per ASN: 15.24 ARIN Region origin ASes announcing only one prefix: 7057 ARIN Region transit ASes present in the Internet Routing Table: 1994 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: 5295 Number of ARIN addresses announced to Internet: 1349202944 Equivalent to 80 /8s, 107 /16s and 52 /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, 393216-402332 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: 277793 Total RIPE prefixes after maximum aggregation: 137038 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 276917 Unique aggregates announced from the RIPE address blocks: 178855 RIPE Region origin ASes present in the Internet Routing Table: 29016 RIPE Prefixes per ASN: 9.54 RIPE Region origin ASes announcing only one prefix: 12076 RIPE Region transit ASes present in the Internet Routing Table: 3982 Average RIPE Region AS path length visible: 5.5 Max RIPE Region AS path length visible: 50 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12647 Number of RIPE addresses announced to Internet: 732199680 Equivalent to 43 /8s, 164 /16s and 123 /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: 124409 Total LACNIC prefixes after maximum aggregation: 30146 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 120661 Unique aggregates announced from the LACNIC address blocks: 49442 LACNIC Region origin ASes present in the Internet Routing Table: 11276 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2649 LACNIC Region transit ASes present in the Internet Routing Table: 2559 Average LACNIC Region AS path length visible: 6.3 Max LACNIC Region AS path length visible: 37 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9251 Number of LACNIC addresses announced to Internet: 170834176 Equivalent to 10 /8s, 46 /16s and 185 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 34832 Total AfriNIC prefixes after maximum aggregation: 6807 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 47653 Unique aggregates announced from the AfriNIC address blocks: 14029 AfriNIC Region origin ASes present in the Internet Routing Table: 1953 AfriNIC Prefixes per ASN: 24.40 AfriNIC Region origin ASes announcing only one prefix: 713 AfriNIC Region transit ASes present in the Internet Routing Table: 377 Average AfriNIC Region AS path length visible: 6.2 Max AfriNIC Region AS path length visible: 38 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1315 Number of AfriNIC addresses announced to Internet: 105237504 Equivalent to 6 /8s, 69 /16s and 204 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & 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 12877 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6138 838 617 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4594 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3939 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3697 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3290 1868 99 VNPT-AS-VN VNPT Corp, VN 56046 2967 811 177 CMNET-JIANGSU-AP China Mobile communicati 24560 2919 865 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2171 427 183 TATACOMM-AS TATA Communications formerly 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 13799 41098 5336 AMAZON-02, US 11492 4733 314 786 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3645 1320 82 SHAW, CA 22773 3343 3029 164 ASN-CXA-ALL-CCI-22773-RDC, US 174 3254 8769 858 COGENT-174, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3215 3858 436 GOOGLE-CLOUD-PLATFORM, US 16625 3043 1287 2208 AKAMAI-AS, US 4155 2929 229 1736 USDA-1, 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 7549 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4030 3395 127 AKAMAI-ASN1, NL 9009 3856 365 2173 M247, RO 12389 3112 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 584 TELLCOM-AS, TR 212238 2330 165 1694 CDNEXT, GB 203020 1640 209 771 HOSTROYALE, IN 13188 1605 100 37 TRIOLAN, UA 8452 1592 1852 14 TE-AS TE-AS, EG 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 12335 3272 580 UNINET, MX 10620 3483 472 1049 Telmex Colombia S.A., CO 13999 2527 511 349 Mega Cable, S.A. de C.V., MX 11830 1986 369 64 Instituto Costarricense de Electricidad y 28573 1370 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1219 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1185 371 22 Telefonica del Peru S.A.A., PE 22884 1060 70 379 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1018 2487 55 TIM SA, BR 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 1770 660 28 RAYA-AS, EG 29571 1499 94 32 ORANGE-COTE-IVOIRE, CI 36992 1421 1501 377 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1242 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 972 520 42 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 569 82 3 KENET-AS, KE 15399 531 57 59 WANANCHI-, 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 13799 41098 5336 AMAZON-02, US 9808 12877 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12335 3272 580 UNINET, MX 12479 7549 1711 149 UNI2-AS, ES 7545 6138 838 617 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4733 314 786 CABLEONE, US 18403 4594 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 4030 3395 127 AKAMAI-ASN1, NL 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 12877 12762 CHINAMOBILE-CN China Mobile Communications Grou 8151 12335 11755 UNINET, MX 12479 7549 7400 UNI2-AS, ES 7545 6138 5521 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4594 4569 FPT-AS-AP FPT Telecom Company, VN 9498 4464 4153 BBIL-AP BHARTI Airtel Ltd., IN 11492 4733 3947 CABLEONE, US 7552 3939 3912 VIETEL-AS-AP Viettel Group, VN 20940 4030 3903 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 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/USP/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /10:41 /11:92 /12:298 /13:581 /14:1208 /15:2151 /16:13795 /17:8218 /18:13505 /19:24584 /20:44010 /21:51828 /22:112267 /23:103241 /24:619031 /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 6554 12335 UNINET, MX 12479 6509 7549 UNI2-AS, ES 11492 3552 4733 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3442 3645 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2496 3343 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2363 13799 AMAZON-02, US 30036 2302 2645 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2203 3483 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) ---------------------------------------------- 1:2419 2:1529 3:882 4:10 5:4766 6:158 7:6 8:1545 9:3 11:172 12:1250 13:453 14:2583 15:377 16:283 17:379 18:901 20:564 21:4 22:188 23:7813 24:2702 25:2 27:2815 29:19 31:3362 32:29 33:1 34:80 35:264 36:4272 37:4564 38:9276 39:982 40:262 41:4262 42:2071 43:2698 44:386 45:18616 46:5128 47:338 49:1924 50:2053 51:591 52:1548 54:321 55:1106 56:11 57:280 58:2230 59:1283 60:1175 61:2881 62:3017 63:1783 64:5585 65:2140 66:4786 67:3103 68:1068 69:3916 70:1031 71:635 72:2842 74:2813 75:1509 76:603 77:2768 78:1914 79:1739 80:2214 81:2077 82:3267 83:1437 84:1923 85:3461 86:1124 87:2150 88:1354 89:4458 90:775 91:8421 92:2766 93:2971 94:4135 95:4459 96:1465 97:310 98:957 99:708 100:71 101:1213 102:3908 103:32282 104:5267 105:763 106:874 107:2641 108:1266 109:4186 110:2239 111:3582 112:2457 113:1847 114:1979 115:2230 116:2069 117:2692 118:3042 119:1890 120:2199 121:1334 122:2806 123:2240 124:1655 125:2882 126:91 128:1623 129:969 130:1298 131:2070 132:785 133:450 134:1619 135:356 136:1445 137:1316 138:2840 139:1603 140:1620 141:1533 142:1914 143:1975 144:1191 145:575 146:2182 147:2104 148:2710 149:2980 150:1258 151:2371 152:2108 153:593 154:7536 155:1881 156:3084 157:1947 158:1380 159:2527 160:3612 161:1911 162:3902 163:2275 164:1874 165:2466 166:1534 167:2054 168:3890 169:786 170:5226 171:1003 172:4241 173:3387 174:903 175:1322 176:3743 177:4706 178:3990 179:2314 180:2593 181:4174 182:3594 183:2265 184:2077 185:21625 186:5235 187:4643 188:4283 189:4347 190:9511 191:1534 192:11334 193:9485 194:7791 195:5623 196:3294 197:3212 198:6224 199:8636 200:8214 201:6370 202:10421 203:10674 204:4592 205:3665 206:4560 207:3643 208:4301 209:5174 210:4722 211:2647 212:4609 213:3843 214:1038 215:51 216:6813 217:3307 218:1430 219:398 220:2135 221:1210 222:743 223:2803 End of report