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 18 Apr, 2026 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: 1039739 Prefixes after maximum aggregation (per Origin AS): 399614 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 514745 Number of IPv4 prefixes with a valid ROA: 631302 Number of IPv4 prefixes with an invalid ROA: 1341 Number of IPv4 prefixes with no ROA: 407096 Total ASes present in the Internet Routing Table: 78329 Prefixes per ASN: 13.27 Origin-only ASes present in the Internet Routing Table: 67194 Origin ASes announcing only one prefix: 27390 Transit ASes present in the Internet Routing Table: 11135 Transit-only ASes present in the Internet Routing Table: 580 Paths with bogon ASNs present in the IPv4 Routing Table: 286 Average AS path length visible in the Internet Routing Table: 4.9 Max AS path length visible: 215 Max AS path prepend of ASN (205624) 210 Prefixes from unregistered ASNs in the Routing Table: 1208 Number of instances of unregistered ASNs: 1253 Number of 32-bit ASNs allocated by the RIRs: 49372 Number of 32-bit ASNs visible in the Routing Table: 40404 Prefixes from 32-bit ASNs in the Routing Table: 229116 Number of bogon 32-bit ASNs visible in the Routing Table: 137 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 529 Number of addresses announced to Internet: 3104364288 Equivalent to 185 /8s, 8 /16s and 215 /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: 341857 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 278410 Total APNIC prefixes after maximum aggregation: 82294 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 265334 Unique aggregates announced from the APNIC address blocks: 107790 APNIC Region origin ASes present in the Internet Routing Table: 15118 APNIC Prefixes per ASN: 17.55 APNIC Region origin ASes announcing only one prefix: 4674 APNIC Region transit ASes present in the Internet Routing Table: 2011 Average APNIC Region AS path length visible: 5.1 Max APNIC Region AS path length visible: 45 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10716 Number of APNIC addresses announced to Internet: 749006336 Equivalent to 44 /8s, 164 /16s and 238 /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: 302758 Total ARIN prefixes after maximum aggregation: 135759 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 302421 Unique aggregates announced from the ARIN address blocks: 147138 ARIN Region origin ASes present in the Internet Routing Table: 19403 ARIN Prefixes per ASN: 15.59 ARIN Region origin ASes announcing only one prefix: 7120 ARIN Region transit ASes present in the Internet Routing Table: 1935 Average ARIN Region AS path length visible: 4.7 Max ARIN Region AS path length visible: 58 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5552 Number of ARIN addresses announced to Internet: 1347848960 Equivalent to 80 /8s, 86 /16s and 139 /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: 289709 Total RIPE prefixes after maximum aggregation: 142867 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 291832 Unique aggregates announced from the RIPE address blocks: 189748 RIPE Region origin ASes present in the Internet Routing Table: 29438 RIPE Prefixes per ASN: 9.91 RIPE Region origin ASes announcing only one prefix: 12195 RIPE Region transit ASes present in the Internet Routing Table: 4037 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 215 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13316 Number of RIPE addresses announced to Internet: 733556480 Equivalent to 43 /8s, 185 /16s and 47 /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: 127960 Total LACNIC prefixes after maximum aggregation: 30802 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 122809 Unique aggregates announced from the LACNIC address blocks: 50278 LACNIC Region origin ASes present in the Internet Routing Table: 11370 LACNIC Prefixes per ASN: 10.80 LACNIC Region origin ASes announcing only one prefix: 2686 LACNIC Region transit ASes present in the Internet Routing Table: 2581 Average LACNIC Region AS path length visible: 5.5 Max LACNIC Region AS path length visible: 69 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9426 Number of LACNIC addresses announced to Internet: 169842176 Equivalent to 10 /8s, 31 /16s and 150 /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: 39694 Total AfriNIC prefixes after maximum aggregation: 7176 AfriNIC Deaggregation factor: 5.53 Prefixes being announced from the AfriNIC address blocks: 56814 Unique aggregates announced from the AfriNIC address blocks: 19387 AfriNIC Region origin ASes present in the Internet Routing Table: 2030 AfriNIC Prefixes per ASN: 27.99 AfriNIC Region origin ASes announcing only one prefix: 715 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 4.6 Max AfriNIC Region AS path length visible: 62 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1394 Number of AfriNIC addresses announced to Internet: 103883776 Equivalent to 6 /8s, 49 /16s and 36 /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 13837 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5906 827 490 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4923 551 331 BBIL-AP BHARTI Airtel Ltd., IN 7552 4056 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3680 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3490 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3353 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 3011 855 536 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2889 182 490 LCS-AS-AP LARUS Limited, HK 140292 2507 273 1955 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14737 41277 5672 AMAZON-02 - Amazon.com, Inc., US 22773 4773 3116 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4670 310 1039 CABLEONE - CABLE ONE, INC., US 7155 3870 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3720 1305 75 SHAW - Shaw Communications, CA 174 3333 8766 822 COGENT-174 - Cogent Communications, LLC, 396982 3322 4859 497 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3139 54728 2390 DNIC-AS-00749 - United States Department 36352 2749 224 918 AS-COLOCROSSING - HostPapa, US 30036 2674 367 312 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom C 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 7174 1711 149 UNI2-AS, ES 39891 4943 305 72 ALJAWWALSTC-AS, SA 20940 3958 3389 111 AKAMAI-ASN1, NL 9009 3862 357 2258 M247, RO 12389 3146 2320 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2744 199 2024 CDNEXT, GB 34984 2451 365 575 TELLCOM-AS, TR 8452 1711 1852 14 TE-AS TE-AS, EG 203020 1675 252 832 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA 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 12837 3309 619 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2436 506 346 Mega Cable, S.A. de C.V., MX 11830 1937 369 65 Instituto Costarricense de Electricidad y 11664 1437 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 1246 371 22 INTEGRATEL PERU S.A.A., PE 26615 1072 2392 100 TIM SA, BR 22884 1065 71 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 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 2025 648 34 RAYA-AS, EG 36992 1859 1533 336 ETISALAT-MISR, EG 20011 1340 206 353 NTT-DATA-Inc, ZA 24863 1283 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1223 520 41 Vodafone-, EG 37069 1113 1100 11 MOBINIL, EG 29571 1071 78 19 ORANGE-COTE-IVOIRE, CI 15399 559 57 55 WANANCHI-, KE 3741 557 724 324 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 14737 41277 5672 AMAZON-02 - Amazon.com, Inc., US 9808 13837 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12837 3309 619 UNINET, MX 12479 7174 1711 149 UNI2-AS, ES 7545 5906 827 490 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 305 72 ALJAWWALSTC-AS, SA 9498 4923 551 331 BBIL-AP BHARTI Airtel Ltd., IN 22773 4773 3116 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4670 310 1039 CABLEONE - CABLE ONE, INC., US 7552 4056 1332 28 VIETEL-AS-AP Viettel Group, VN 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 13837 13716 CHINAMOBILE-CN China Mobile Communications Grou 8151 12837 12218 UNINET, MX 12479 7174 7025 UNI2-AS, ES 7545 5906 5416 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 4871 ALJAWWALSTC-AS, SA 9498 4923 4592 BBIL-AP BHARTI Airtel Ltd., IN 22773 4773 4409 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4056 4028 VIETEL-AS-AP Viettel Group, VN 20940 3958 3847 AKAMAI-ASN1, NL 7155 3870 3785 VIASAT-SP-BACKBONE - ViaSat,Inc., US 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 198767 UNALLOCATED 5.175.194.0/24 212895 ROUTE64_ORG, DE 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 46887 CROWNCASTLE-AS46887 - C 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 33132 CROWNCASTLE-AS33132 - C 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/RENU/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE - Hurricane Electric LLC, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-spar 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: 3257 GTT-BACKBONE GTT, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 37100 SEACOM-AS, MU 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/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 /10:39 /11:95 /12:299 /13:585 /14:1192 /15:2103 /16:13608 /17:8295 /18:13335 /19:25437 /20:45545 /21:52404 /22:113600 /23:107196 /24:655976 /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 7025 12837 UNINET, MX 12479 6115 7174 UNI2-AS, ES 39891 3628 4943 ALJAWWALSTC-AS, SA 11492 3531 4670 CABLEONE - CABLE ONE, INC., US 6327 3504 3720 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 2649 14737 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/RENU/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2021 2:1891 3:1012 4:5 5:5121 6:193 7:6 8:1505 9:39 11:172 12:1190 13:693 14:2694 15:459 16:195 17:424 18:916 20:593 21:4 22:188 23:8243 24:2778 25:2 27:2760 28:1 29:19 31:3473 32:37 34:91 35:283 36:4679 37:4441 38:10194 39:1285 40:421 41:4744 42:1293 43:3036 44:447 45:19808 46:4908 47:411 48:125 49:2238 50:2019 51:656 52:1314 54:285 55:1112 56:11 57:330 58:2324 59:1377 60:1174 61:3128 62:3154 63:1719 64:6334 65:2132 66:6093 67:3263 68:1504 69:4214 70:1059 71:614 72:3213 74:3025 75:1502 76:590 77:2944 78:1984 79:1797 80:2368 81:2268 82:4088 83:1447 84:2143 85:3826 86:1089 87:2522 88:1346 89:4747 90:801 91:8449 92:2826 93:3015 94:4356 95:4686 96:1458 97:314 98:942 99:815 100:70 101:1372 102:5032 103:32334 104:5364 105:1123 106:911 107:2891 108:1251 109:4271 110:2280 111:4112 112:3162 113:1863 114:2270 115:2225 116:2152 117:3504 118:2626 119:2071 120:2701 121:1524 122:2985 123:2265 124:1652 125:2981 126:126 128:1588 129:1014 130:1630 131:2464 132:841 133:472 134:1674 135:616 136:1575 137:1348 138:3322 139:1625 140:1751 141:1728 142:2538 143:2105 144:1755 145:645 146:2203 147:2223 148:2782 149:3138 150:1366 151:2844 152:2325 153:1344 154:10024 155:2297 156:4546 157:2300 158:1547 159:2862 160:3845 161:1960 162:4036 163:2482 164:2056 165:2649 166:1271 167:2305 168:4043 169:875 170:5580 171:1126 172:4678 173:3487 174:882 175:1352 176:3873 177:4832 178:4360 179:2329 180:3042 181:4556 182:4003 183:2804 184:2041 185:21907 186:5799 187:4981 188:4584 189:4528 190:9855 191:1548 192:11482 193:9643 194:7904 195:5832 196:3692 197:4028 198:6119 199:6063 200:8079 201:6390 202:10508 203:10501 204:4760 205:3660 206:4523 207:3842 208:4375 209:5397 210:4612 211:2676 212:5118 213:4130 214:1042 215:47 216:7295 217:3602 218:1697 219:415 220:2191 221:1310 222:932 223:3417 End of report