This is an automated weekly mailing describing the state of the IPv4 Research & Education Routing Table received by NSRC's collector from RENU's network. Daily listings are sent to ren-bgp-stats-all@lists.nsrc.org. For historical data, please see https://bgp.nsrc.org. If you have any comments please contact Philip Smith . IPv4 R&E Routing Table Report 18:40 GMT Sat 04 Oct, 2025 IPv4 BGP Table (Global) as seen at RENU. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/RENU/ Analysis Summary ---------------- BGP routing table entries examined: 1017943 Prefixes after maximum aggregation (per Origin AS): 390672 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 495353 Number of IPv4 prefixes with a valid ROA: 583033 Number of IPv4 prefixes with an invalid ROA: 2414 Number of IPv4 prefixes with no ROA: 432496 Total ASes present in the Internet Routing Table: 77439 Prefixes per ASN: 13.15 Origin-only ASes present in the Internet Routing Table: 66308 Origin ASes announcing only one prefix: 26991 Transit ASes present in the Internet Routing Table: 11131 Transit-only ASes present in the Internet Routing Table: 558 Paths with bogon ASNs present in the IPv4 Routing Table: 152 Average AS path length visible in the Internet Routing Table: 5.0 Max AS path length visible: 57 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1047 Number of instances of unregistered ASNs: 1098 Number of 32-bit ASNs allocated by the RIRs: 47638 Number of 32-bit ASNs visible in the Routing Table: 39099 Prefixes from 32-bit ASNs in the Routing Table: 213488 Number of bogon 32-bit ASNs visible in the Routing Table: 136 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 440 Number of addresses announced to Internet: 3111550720 Equivalent to 185 /8s, 118 /16s and 127 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 333604 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271513 Total APNIC prefixes after maximum aggregation: 79807 APNIC Deaggregation factor: 3.40 Prefixes being announced from the APNIC address blocks: 261259 Unique aggregates announced from the APNIC address blocks: 105588 APNIC Region origin ASes present in the Internet Routing Table: 14823 APNIC Prefixes per ASN: 17.63 APNIC Region origin ASes announcing only one prefix: 4495 APNIC Region transit ASes present in the Internet Routing Table: 1990 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10385 Number of APNIC addresses announced to Internet: 751592960 Equivalent to 44 /8s, 204 /16s and 102 /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: 297937 Total ARIN prefixes after maximum aggregation: 134103 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299387 Unique aggregates announced from the ARIN address blocks: 142959 ARIN Region origin ASes present in the Internet Routing Table: 19317 ARIN Prefixes per ASN: 15.50 ARIN Region origin ASes announcing only one prefix: 7079 ARIN Region transit ASes present in the Internet Routing Table: 1979 Average ARIN Region AS path length visible: 4.8 Max ARIN Region AS path length visible: 36 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5343 Number of ARIN addresses announced to Internet: 1351734784 Equivalent to 80 /8s, 145 /16s and 214 /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: 284613 Total RIPE prefixes after maximum aggregation: 138634 RIPE Deaggregation factor: 2.05 Prefixes being announced from the RIPE address blocks: 283962 Unique aggregates announced from the RIPE address blocks: 180730 RIPE Region origin ASes present in the Internet Routing Table: 29105 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12084 RIPE Region transit ASes present in the Internet Routing Table: 4020 Average RIPE Region AS path length visible: 4.8 Max RIPE Region AS path length visible: 27 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12764 Number of RIPE addresses announced to Internet: 733106176 Equivalent to 43 /8s, 178 /16s and 80 /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: 125515 Total LACNIC prefixes after maximum aggregation: 30381 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121721 Unique aggregates announced from the LACNIC address blocks: 49452 LACNIC Region origin ASes present in the Internet Routing Table: 11300 LACNIC Prefixes per ASN: 10.77 LACNIC Region origin ASes announcing only one prefix: 2646 LACNIC Region transit ASes present in the Internet Routing Table: 2545 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 43 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9265 Number of LACNIC addresses announced to Internet: 170740736 Equivalent to 10 /8s, 45 /16s and 76 /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: 37318 Total AfriNIC prefixes after maximum aggregation: 7037 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 51174 Unique aggregates announced from the AfriNIC address blocks: 16233 AfriNIC Region origin ASes present in the Internet Routing Table: 1976 AfriNIC Prefixes per ASN: 25.90 AfriNIC Region origin ASes announcing only one prefix: 687 AfriNIC Region transit ASes present in the Internet Routing Table: 391 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1342 Number of AfriNIC addresses announced to Internet: 104138240 Equivalent to 6 /8s, 53 /16s and 6 /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 13677 8759 113 CHINAMOBILE-CN China Mobile Communication 7545 6177 834 598 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4522 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4474 536 315 BBIL-AP BHARTI Airtel Ltd., IN 7552 3959 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3752 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3318 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 3116 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2928 863 502 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2368 505 1510 HUTCHISON-AS-AP HGC Global Communications Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14337 40996 5403 AMAZON-02, US 174 4894 8769 811 COGENT-174, US 11492 4752 320 794 CABLEONE, US 22773 3975 3065 333 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3875 287 91 VIASAT-SP-BACKBONE, US 6327 3676 1320 82 SHAW, CA 396982 3269 4823 463 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3083 239 1713 USDA-1, US 16625 3048 1303 2217 AKAMAI-AS, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7428 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 4045 3395 127 AKAMAI-ASN1, NL 9009 3987 374 2244 M247, RO 12389 3139 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 5384 2629 585 28 EMIRATES-INTERNET Emirates Internet, AE 212238 2461 176 1785 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1870 201 899 HOSTROYALE, IN 8452 1637 1852 14 TE-AS TE-AS, EG Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12358 3254 576 UNINET, MX 10620 3499 474 1068 Telmex Colombia S.A., CO 13999 2544 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1222 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1178 371 23 Telefonica del Peru S.A.A., PE 22884 1070 71 352 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 2486 56 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1846 652 28 RAYA-AS, EG 36992 1508 1498 383 ETISALAT-MISR, EG 20011 1324 205 344 NTT-DATA-Inc, ZA 24863 1250 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1188 102 53 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 1059 520 42 Vodafone-, EG 36914 573 82 3 KENET-AS, KE 3741 567 725 321 NTT-DATA-Inc, ZA Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14337 40996 5403 AMAZON-02, US 9808 13677 8759 113 CHINAMOBILE-CN China Mobile Communication 8151 12358 3254 576 UNINET, MX 12479 7428 1711 149 UNI2-AS, ES 7545 6177 834 598 TPG-INTERNET-AP TPG Telecom Limited, AU 174 4894 8769 811 COGENT-174, US 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4752 320 794 CABLEONE, US 18403 4522 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4474 536 315 BBIL-AP BHARTI Airtel Ltd., IN Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13677 13564 CHINAMOBILE-CN China Mobile Communications Grou 8151 12358 11782 UNINET, MX 12479 7428 7279 UNI2-AS, ES 7545 6177 5579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4522 4496 FPT-AS-AP FPT Telecom Company, VN 9498 4474 4159 BBIL-AP BHARTI Airtel Ltd., IN 174 4894 4083 COGENT-174, US 11492 4752 3958 CABLEONE, US 7552 3959 3931 VIETEL-AS-AP Viettel Group, VN Complete listing at https://bgp.nsrc.org/REN/RENU/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 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 46887 CROWNCASTLE-AS46887, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 33132 CROWNCASTLE-AS33132, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-spar 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 23.146.204.0/24 Origin: 214696 UNCOLLAPSE-AS, US 23.146.204.0/24 Transit: 53667 PONYNET, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:41 /11:93 /12:302 /13:583 /14:1204 /15:2141 /16:13850 /17:8299 /18:13640 /19:24842 /20:45045 /21:52586 /22:113726 /23:106077 /24:635484 /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 6594 12358 UNINET, MX 12479 6394 7428 UNI2-AS, ES 11492 3565 4752 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3466 3676 SHAW, CA 7155 2833 3875 VIASAT-SP-BACKBONE, US 22773 2525 3975 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2400 14337 AMAZON-02, US 30036 2290 2630 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2212 3499 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/RENU/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2448 2:1673 3:947 4:10 5:4980 6:169 7:6 8:1552 9:6 11:172 12:1244 13:565 14:2643 15:401 16:304 17:392 18:909 20:593 21:4 22:188 23:7951 24:2703 25:2 27:2778 29:19 31:3474 32:34 33:1 34:88 35:276 36:4453 37:4598 38:10575 39:1095 40:299 41:4522 42:2022 43:2786 44:389 45:19082 46:5252 47:347 49:2068 50:2055 51:595 52:1594 54:360 55:1108 56:11 57:293 58:2262 59:1331 60:1194 61:3091 62:3096 63:1783 64:5680 65:2144 66:4996 67:3116 68:1101 69:4031 70:1046 71:645 72:3000 74:2867 75:1504 76:603 77:2806 78:1928 79:1749 80:2272 81:2123 82:3458 83:1521 84:2000 85:3543 86:1201 87:2389 88:1368 89:4522 90:809 91:8425 92:2863 93:2992 94:4276 95:4498 96:1516 97:310 98:953 99:738 100:71 101:1466 102:4503 103:32654 104:5378 105:1064 106:895 107:2668 108:1214 109:4243 110:2250 111:3774 112:2661 113:1890 114:2002 115:2341 116:2134 117:2942 118:3077 119:1994 120:2271 121:1371 122:2844 123:2441 124:1737 125:2907 126:93 128:1573 129:1002 130:1294 131:2140 132:783 133:461 134:1613 135:369 136:1495 137:1137 138:2815 139:1607 140:1647 141:1549 142:2039 143:2058 144:1286 145:627 146:2181 147:2131 148:2748 149:2976 150:1287 151:2571 152:2175 153:574 154:7758 155:2059 156:3529 157:2021 158:1430 159:2597 160:3584 161:1999 162:3954 163:2302 164:2145 165:2594 166:1566 167:2103 168:3843 169:784 170:5365 171:1021 172:4282 173:3411 174:911 175:1367 176:3854 177:4792 178:4270 179:2328 180:2662 181:4257 182:3724 183:2554 184:2101 185:21840 186:5400 187:4742 188:4349 189:4425 190:9759 191:1532 192:11420 193:9500 194:7913 195:5699 196:3597 197:3920 198:6113 199:8734 200:8121 201:6362 202:10522 203:10699 204:4592 205:3621 206:4421 207:3568 208:4340 209:5321 210:4745 211:2706 212:4848 213:3929 214:1037 215:50 216:6934 217:3494 218:1586 219:414 220:2196 221:1235 222:752 223:3072 End of report