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 23 May, 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: 1046660 Prefixes after maximum aggregation (per Origin AS): 402512 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 517858 Number of IPv4 prefixes with a valid ROA: 655689 Number of IPv4 prefixes with an invalid ROA: 1261 Number of IPv4 prefixes with no ROA: 389710 Total ASes present in the Internet Routing Table: 78511 Prefixes per ASN: 13.33 Origin-only ASes present in the Internet Routing Table: 67318 Origin ASes announcing only one prefix: 27449 Transit ASes present in the Internet Routing Table: 11193 Transit-only ASes present in the Internet Routing Table: 588 Paths with bogon ASNs present in the IPv4 Routing Table: 269 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: 1232 Number of instances of unregistered ASNs: 1262 Number of 32-bit ASNs allocated by the RIRs: 49879 Number of 32-bit ASNs visible in the Routing Table: 40679 Prefixes from 32-bit ASNs in the Routing Table: 231846 Number of bogon 32-bit ASNs visible in the Routing Table: 97 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 433 Number of addresses announced to Internet: 3104238080 Equivalent to 185 /8s, 6 /16s and 234 /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: 345340 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 280360 Total APNIC prefixes after maximum aggregation: 82922 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 266895 Unique aggregates announced from the APNIC address blocks: 108035 APNIC Region origin ASes present in the Internet Routing Table: 15161 APNIC Prefixes per ASN: 17.60 APNIC Region origin ASes announcing only one prefix: 4648 APNIC Region transit ASes present in the Internet Routing Table: 2025 Average APNIC Region AS path length visible: 5.0 Max APNIC Region AS path length visible: 45 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10771 Number of APNIC addresses announced to Internet: 747728384 Equivalent to 44 /8s, 145 /16s and 110 /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: 303159 Total ARIN prefixes after maximum aggregation: 136958 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 302166 Unique aggregates announced from the ARIN address blocks: 147834 ARIN Region origin ASes present in the Internet Routing Table: 19409 ARIN Prefixes per ASN: 15.57 ARIN Region origin ASes announcing only one prefix: 7118 ARIN Region transit ASes present in the Internet Routing Table: 1933 Average ARIN Region AS path length visible: 4.7 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5586 Number of ARIN addresses announced to Internet: 1348102912 Equivalent to 80 /8s, 90 /16s and 107 /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: 291820 Total RIPE prefixes after maximum aggregation: 143794 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 294751 Unique aggregates announced from the RIPE address blocks: 191733 RIPE Region origin ASes present in the Internet Routing Table: 29537 RIPE Prefixes per ASN: 9.98 RIPE Region origin ASes announcing only one prefix: 12247 RIPE Region transit ASes present in the Internet Routing Table: 4067 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: 13464 Number of RIPE addresses announced to Internet: 734018048 Equivalent to 43 /8s, 192 /16s and 58 /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: 129993 Total LACNIC prefixes after maximum aggregation: 30870 LACNIC Deaggregation factor: 4.21 Prefixes being announced from the LACNIC address blocks: 124407 Unique aggregates announced from the LACNIC address blocks: 50323 LACNIC Region origin ASes present in the Internet Routing Table: 11410 LACNIC Prefixes per ASN: 10.90 LACNIC Region origin ASes announcing only one prefix: 2725 LACNIC Region transit ASes present in the Internet Routing Table: 2597 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 105 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9454 Number of LACNIC addresses announced to Internet: 169803776 Equivalent to 10 /8s, 31 /16s and 0 /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: 40096 Total AfriNIC prefixes after maximum aggregation: 7254 AfriNIC Deaggregation factor: 5.53 Prefixes being announced from the AfriNIC address blocks: 58008 Unique aggregates announced from the AfriNIC address blocks: 19560 AfriNIC Region origin ASes present in the Internet Routing Table: 2039 AfriNIC Prefixes per ASN: 28.45 AfriNIC Region origin ASes announcing only one prefix: 711 AfriNIC Region transit ASes present in the Internet Routing Table: 386 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: 1404 Number of AfriNIC addresses announced to Internet: 104387328 Equivalent to 6 /8s, 56 /16s and 211 /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 13915 8759 119 CHINAMOBILE-CN China Mobile Communication 7545 5876 825 477 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4941 551 322 BBIL-AP BHARTI Airtel Ltd., IN 7552 4064 1331 26 VIETEL-AS-AP Viettel Group, VN 7713 3724 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3545 888 178 CMNET-JIANGSU-AP China Mobile communicati 17561 3463 218 606 LCS-AS-AP LARUS Limited, HK 45899 3370 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 2744 745 738 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2509 274 1957 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 14999 41427 5718 AMAZON-02 - Amazon.com, Inc., US 22773 4766 3115 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4593 305 1087 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3714 1305 74 SHAW - Shaw Communications, CA 396982 3350 4865 505 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3138 54728 2389 DNIC-AS-00749 - United States Department 36352 3056 231 1027 AS-COLOCROSSING - HostPapa, US 7029 2634 2556 885 WINDSTREAM - Windstream Communications LL 30036 2581 357 530 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 7132 1711 149 UNI2-AS, ES 39891 4975 307 72 ALJAWWALSTC-AS, SA 9009 4116 375 2488 M247, RO 20940 3911 3389 110 AKAMAI-ASN1, NL 12389 3139 2319 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2797 206 2064 CDNEXT, GB 34984 2489 367 583 TELLCOM-AS, TR 8452 1718 1852 14 TE-AS TE-AS, EG 203020 1662 252 830 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 12755 3254 631 UNINET, MX 10620 3432 450 1101 Telmex Colombia S.A., CO 13999 2354 500 357 Mega Cable, S.A. de C.V., MX 11830 1935 369 65 Instituto Costarricense de Electricidad y 11664 1471 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1364 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1224 371 22 INTEGRATEL PERU S.A.A., PE 22884 1080 71 366 TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. D 26615 1073 2392 100 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 2028 649 36 RAYA-AS, EG 36992 1860 1532 337 ETISALAT-MISR, EG 20011 1341 206 353 NTT-DATA-Inc, ZA 36935 1275 521 43 Vodafone-, EG 24863 1258 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1117 1100 11 MOBINIL, EG 29571 1085 70 18 ORANGE-COTE-IVOIRE, CI 328608 637 58 175 Africa-on-Cloud-AS, ZA 15399 568 58 61 WANANCHI-, KE 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 14999 41427 5718 AMAZON-02 - Amazon.com, Inc., US 9808 13915 8759 119 CHINAMOBILE-CN China Mobile Communication 8151 12755 3254 631 UNINET, MX 12479 7132 1711 149 UNI2-AS, ES 7545 5876 825 477 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 307 72 ALJAWWALSTC-AS, SA 9498 4941 551 322 BBIL-AP BHARTI Airtel Ltd., IN 22773 4766 3115 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4593 305 1087 CABLEONE - CABLE ONE, INC., US 9009 4116 375 2488 M247, RO 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 13915 13796 CHINAMOBILE-CN China Mobile Communications Grou 8151 12755 12124 UNINET, MX 12479 7132 6983 UNI2-AS, ES 7545 5876 5399 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 4903 ALJAWWALSTC-AS, SA 9498 4941 4619 BBIL-AP BHARTI Airtel Ltd., IN 22773 4766 4399 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4064 4038 VIETEL-AS-AP Viettel Group, VN 20940 3911 3801 AKAMAI-ASN1, NL 7155 3870 3780 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 46198 UNALLOCATED 8.10.6.0/24 23520 LIBERTY-NETWORKS - Colu 46198 UNALLOCATED 8.10.7.0/24 23520 LIBERTY-NETWORKS - Colu 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 400273 UNALLOCATED 8.41.137.0/24 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 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 23.131.100.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.100.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.156.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.156.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.212.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.212.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 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: 30844 LIQUID-AS, GB 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 /13:583 /14:1190 /15:2109 /16:13610 /17:8289 /18:13371 /19:25432 /20:45533 /21:52403 /22:113545 /23:108314 /24:661818 /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 6976 12755 UNINET, MX 12479 6068 7132 UNI2-AS, ES 39891 3660 4975 ALJAWWALSTC-AS, SA 6327 3497 3714 SHAW - Shaw Communications, CA 11492 3469 4593 CABLEONE - CABLE ONE, INC., US 22773 3063 4766 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2720 14999 AMAZON-02 - Amazon.com, Inc., US 10620 2236 3432 Telmex Colombia S.A., CO 30036 2235 2581 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2041 2:2077 3:998 4:5 5:5110 6:202 7:6 8:1493 9:63 11:172 12:1130 13:698 14:2718 15:467 16:215 17:441 18:920 20:602 21:4 22:188 23:8432 24:2777 25:2 27:2747 28:1 29:19 31:3592 32:37 34:92 35:284 36:4789 37:4444 38:9742 39:1307 40:413 41:4754 42:1295 43:3142 44:454 45:19848 46:4904 47:414 48:157 49:2262 50:2026 51:828 52:1333 54:282 55:1103 56:11 57:331 58:2333 59:1367 60:1175 61:3172 62:3165 63:1680 64:6391 65:2151 66:6141 67:3274 68:1516 69:4233 70:1064 71:608 72:3192 74:3069 75:1501 76:599 77:2945 78:2047 79:1794 80:2349 81:2290 82:4171 83:1459 84:2155 85:3856 86:1096 87:2717 88:1322 89:4777 90:794 91:8477 92:2778 93:3031 94:4418 95:4705 96:1445 97:308 98:950 99:842 100:70 101:1364 102:5064 103:32311 104:5440 105:1233 106:918 107:2947 108:1280 109:4288 110:2281 111:4123 112:3161 113:1916 114:2532 115:2232 116:2064 117:3589 118:2708 119:2071 120:2734 121:1527 122:3013 123:2266 124:1653 125:3002 126:158 128:1569 129:992 130:1669 131:2419 132:880 133:502 134:1721 135:616 136:1467 137:1371 138:3410 139:1704 140:1840 141:1771 142:2554 143:2046 144:1779 145:636 146:2179 147:2242 148:2795 149:3173 150:1373 151:2928 152:2351 153:1635 154:9755 155:2280 156:5128 157:2436 158:1583 159:2869 160:3884 161:1986 162:4104 163:2587 164:2440 165:2684 166:1269 167:2341 168:4080 169:889 170:5594 171:1129 172:4811 173:3457 174:886 175:1353 176:3937 177:5070 178:4420 179:2371 180:3058 181:4600 182:4024 183:2810 184:2019 185:21902 186:6191 187:5066 188:4521 189:4523 190:9907 191:2007 192:11590 193:9619 194:7872 195:5844 196:3724 197:3998 198:6123 199:6080 200:8151 201:6426 202:10477 203:10515 204:4761 205:3679 206:4410 207:3847 208:4375 209:5440 210:4632 211:2686 212:5091 213:4112 214:1039 215:47 216:7299 217:3633 218:1797 219:412 220:2174 221:1318 222:936 223:3444 End of report