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 19 Sep, 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: 1070383 Prefixes after maximum aggregation (per Origin AS): 413859 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 534616 Number of IPv4 prefixes with a valid ROA: 747484 Number of IPv4 prefixes with an invalid ROA: 1021 Number of IPv4 prefixes with no ROA: 321878 Total ASes present in the Internet Routing Table: 79286 Prefixes per ASN: 13.50 Origin-only ASes present in the Internet Routing Table: 67974 Origin ASes announcing only one prefix: 27795 Transit ASes present in the Internet Routing Table: 11312 Transit-only ASes present in the Internet Routing Table: 611 Paths with bogon ASNs present in the IPv4 Routing Table: 313 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: 1345 Number of instances of unregistered ASNs: 1355 Number of 32-bit ASNs allocated by the RIRs: 51301 Number of 32-bit ASNs visible in the Routing Table: 41668 Prefixes from 32-bit ASNs in the Routing Table: 242106 Number of bogon 32-bit ASNs visible in the Routing Table: 41 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 531 Number of addresses announced to Internet: 3126376704 Equivalent to 186 /8s, 88 /16s and 185 /24s Percentage of available address space announced: 84.4 Percentage of allocated address space announced: 84.4 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: 356310 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 283316 Total APNIC prefixes after maximum aggregation: 85798 APNIC Deaggregation factor: 3.30 Prefixes being announced from the APNIC address blocks: 270979 Unique aggregates announced from the APNIC address blocks: 110840 APNIC Region origin ASes present in the Internet Routing Table: 15319 APNIC Prefixes per ASN: 17.69 APNIC Region origin ASes announcing only one prefix: 4752 APNIC Region transit ASes present in the Internet Routing Table: 2034 Average APNIC Region AS path length visible: 5.1 Max APNIC Region AS path length visible: 39 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10951 Number of APNIC addresses announced to Internet: 748922880 Equivalent to 44 /8s, 163 /16s and 168 /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: 313052 Total ARIN prefixes after maximum aggregation: 139325 ARIN Deaggregation factor: 2.25 Prefixes being announced from the ARIN address blocks: 310829 Unique aggregates announced from the ARIN address blocks: 152857 ARIN Region origin ASes present in the Internet Routing Table: 19460 ARIN Prefixes per ASN: 15.97 ARIN Region origin ASes announcing only one prefix: 7164 ARIN Region transit ASes present in the Internet Routing Table: 1944 Average ARIN Region AS path length visible: 4.7 Max ARIN Region AS path length visible: 65 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5771 Number of ARIN addresses announced to Internet: 1355538432 Equivalent to 80 /8s, 203 /16s and 224 /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: 300442 Total RIPE prefixes after maximum aggregation: 149059 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 306276 Unique aggregates announced from the RIPE address blocks: 200236 RIPE Region origin ASes present in the Internet Routing Table: 29894 RIPE Prefixes per ASN: 10.25 RIPE Region origin ASes announcing only one prefix: 12367 RIPE Region transit ASes present in the Internet Routing Table: 4123 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 215 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13905 Number of RIPE addresses announced to Internet: 750120448 Equivalent to 44 /8s, 181 /16s and 238 /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 196608-219547 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: 131548 Total LACNIC prefixes after maximum aggregation: 31653 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 125447 Unique aggregates announced from the LACNIC address blocks: 51526 LACNIC Region origin ASes present in the Internet Routing Table: 11510 LACNIC Prefixes per ASN: 10.90 LACNIC Region origin ASes announcing only one prefix: 2779 LACNIC Region transit ASes present in the Internet Routing Table: 2645 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9580 Number of LACNIC addresses announced to Internet: 167565312 Equivalent to 9 /8s, 252 /16s and 216 /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: 40680 Total AfriNIC prefixes after maximum aggregation: 7234 AfriNIC Deaggregation factor: 5.62 Prefixes being announced from the AfriNIC address blocks: 56321 Unique aggregates announced from the AfriNIC address blocks: 18721 AfriNIC Region origin ASes present in the Internet Routing Table: 2097 AfriNIC Prefixes per ASN: 26.86 AfriNIC Region origin ASes announcing only one prefix: 733 AfriNIC Region transit ASes present in the Internet Routing Table: 377 Average AfriNIC Region AS path length visible: 4.6 Max AfriNIC Region AS path length visible: 68 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1461 Number of AfriNIC addresses announced to Internet: 103951616 Equivalent to 6 /8s, 50 /16s and 45 /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 14062 8737 135 CHINAMOBILE-CN - China Mobile Communicati 9498 5118 561 339 BBIL-AP - BHARTI Airtel Ltd., IN 7545 4632 825 314 TPG-INTERNET-AP - TPG Telecom Limited, AU 7552 4072 1331 24 VIETEL-AS-AP - Viettel Group, VN 56046 3622 888 178 CMNET-Jiangsu-AP - China Mobile communica 7713 3502 1043 69 telkomnet-as-ap - PT Telekomunikasi Indon 45899 3375 1868 98 VNPT-AS-VN - VNPT Corp, VN 140292 3112 317 1816 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK - 24560 2494 596 705 AIRTELBROADBAND-AS-AP - Bharti Airtel Ltd 4755 2272 427 192 TATACOMM-AS - TATA Communications formerl 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 18426 42653 5654 AMAZON-02 - Amazon.com, Inc., US 22773 4862 3199 422 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4612 306 1124 CABLEONE - CABLE ONE, INC., US 7155 4338 286 87 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3829 1305 74 SHAW - Shaw Communications, CA 396982 3524 5380 595 GOOGLE-CLOUD-PLATFORM - Google LLC, US 36352 3218 239 1144 AS-COLOCROSSING - HostPapa, US 749 3133 54663 2384 DNIC-AS-00749 - United States Department 7029 2812 2560 892 WINDSTREAM - Windstream Communications LL 31898 2760 1370 1149 ORACLE-BMC-31898 - Oracle Corporation, 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 7023 1709 149 UNI2-AS - Orange Espagne SA, ES 39891 4908 303 77 ALJAWWALSTC-AS - Saudi Telecom Company JS 9009 4315 387 2631 M247 - M247 Europe SRL, RO 20940 3937 3388 105 AKAMAI-ASN1 - Akamai International B.V., 212238 3594 260 2717 CDNEXT - Datacamp Limited, GB 12389 3125 2330 867 ROSTELECOM-AS - PJSC Rostelecom, RU 34984 2526 371 599 TELLCOM-AS - Superonline Iletisim Hizmetl 29355 2524 155 28 KCELL-AS - Kcell JSC, KZ 3257 1758 2089 995 GTT-BACKBONE - GTT Communications Inc., U 44559 1712 107 959 ITHOSTLINE - IT HOSTLINE LTD, CY 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 13205 3307 608 AS8151 - UNINET, MX 10620 3406 443 1115 AS10620 - Telmex Colombia S.A., CO 13999 2237 495 328 AS13999 - Mega Cable, S.A. de C.V., MX 11830 1866 369 65 AS11830 - Instituto Costarricense de Elec 11664 1508 277 34 AS11664 - Techtel LMDS Comunicaciones Int 28573 1376 2433 268 AS28573 - Claro NXT Telecomunicacoes Ltda 3816 1266 762 224 AS3816 - COLOMBIA TELECOMUNICACIONES S.A. 6147 1196 371 21 AS6147 - INTEGRATEL PERU S.A.A., PE 22884 1099 73 385 AS22884 - TOTAL PLAY TELECOMUNICACIONES, 27715 1077 75 53 AS27715 - Locaweb Servicos de Internet S/ 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 1976 497 26 Vodafone Data - Vodafone Data, EG 36992 1941 1543 328 ETISALAT MISR - ETISALAT MISR, EG 24863 1470 389 16 Link Egypt (Link.NET) - Link Egypt (Link. 36903 1356 590 108 Office National des Postes et Telecommuni 36935 1286 523 49 Vodafone Data - Vodafone Data, EG 37069 1128 1100 11 The Egyptian Company for Mobile Services 29571 1086 70 18 Orange Côte d'Ivoire - Orange Côte d'Iv 20011 1085 191 277 Dimension Data - Dimension Data, ZA 36873 643 141 45 Airtel Networks Limited - Airtel Networks 15399 592 57 62 Wananchi Group (Kenya) Limited - Wananchi 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 18426 42653 5654 AMAZON-02 - Amazon.com, Inc., US 9808 14062 8737 135 CHINAMOBILE-CN - China Mobile Communicati 8151 13205 3307 608 AS8151 - UNINET, MX 12479 7023 1709 149 UNI2-AS - Orange Espagne SA, ES 9498 5118 561 339 BBIL-AP - BHARTI Airtel Ltd., IN 39891 4908 303 77 ALJAWWALSTC-AS - Saudi Telecom Company JS 22773 4862 3199 422 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 7545 4632 825 314 TPG-INTERNET-AP - TPG Telecom Limited, AU 11492 4612 306 1124 CABLEONE - CABLE ONE, INC., US 7155 4338 286 87 VIASAT-SP-BACKBONE - ViaSat,Inc., US 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 14062 13927 CHINAMOBILE-CN - China Mobile Communications Gr 8151 13205 12597 AS8151 - UNINET, MX 12479 7023 6874 UNI2-AS - Orange Espagne SA, ES 39891 4908 4831 ALJAWWALSTC-AS - Saudi Telecom Company JSC, SA 9498 5118 4779 BBIL-AP - BHARTI Airtel Ltd., IN 22773 4862 4440 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7545 4632 4318 TPG-INTERNET-AP - TPG Telecom Limited, AU 7155 4338 4251 VIASAT-SP-BACKBONE - ViaSat,Inc., US 7552 4072 4048 VIETEL-AS-AP - Viettel Group, VN 20940 3937 3832 AKAMAI-ASN1 - Akamai International B.V., NL 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 394928 UNALLOCATED 8.2.70.0/24 6461 ZAYO-6461 - Zayo Bandwi 23338 UNALLOCATED 8.14.84.0/22 33667 CMCS - Comcast Cable Co 395729 UNALLOCATED 8.28.60.0/24 32787 PROLEXIC-TECHNOLOGIES-D 396894 UNALLOCATED 8.28.201.0/24 46887 CROWNCASTLE-AS46887 - C 394936 UNALLOCATED 8.33.224.0/24 174 COGENT-174 - Cogent Com 396243 UNALLOCATED 8.34.113.0/24 3356 LEVEL3 - Level 3 Parent 397274 UNALLOCATED 8.36.79.0/24 3356 LEVEL3 - Level 3 Parent 396243 UNALLOCATED 8.37.112.0/24 3356 LEVEL3 - Level 3 Parent 396243 UNALLOCATED 8.37.123.0/24 3356 LEVEL3 - Level 3 Parent 395195 UNALLOCATED 8.38.115.0/24 33132 CROWNCASTLE-AS33132 - C 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 23.130.160.0/24 Origin: 16509 AMAZON-02 - Amazon.com, Inc., US 23.130.160.0/24 Transit: 3257 GTT-BACKBONE - GTT Communications Inc., 23.131.100.0/24 Origin: 401541 UNASSIGNED 23.131.100.0/24 Transit: 38733 CMCTELECOM-VN - CMC Telecom Infrastructu 23.131.156.0/24 Origin: 401541 UNASSIGNED 23.131.156.0/24 Transit: 38733 CMCTELECOM-VN - CMC Telecom Infrastructu 23.131.212.0/24 Origin: 401541 UNASSIGNED 23.131.212.0/24 Transit: 38733 CMCTELECOM-VN - CMC Telecom Infrastructu 23.133.212.0/24 Origin: 18604 UNASSIGNED 23.133.212.0/24 Transit: 394625 WHITELABELIT - WhiteLabel IT Solutions C 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 /11:97 /12:300 /13:591 /14:1194 /15:2141 /16:13759 /17:8298 /18:13325 /19:25503 /20:45384 /21:53206 /22:113442 /23:110300 /24:682774 /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 7372 13205 AS8151 - UNINET, MX 12479 5936 7023 UNI2-AS - Orange Espagne SA, ES 39891 3657 4908 ALJAWWALSTC-AS - Saudi Telecom Company JSC, SA 16509 3624 18426 AMAZON-02 - Amazon.com, Inc., US 6327 3596 3829 SHAW - Shaw Communications, CA 11492 3520 4612 CABLEONE - CABLE ONE, INC., US 7155 3269 4338 VIASAT-SP-BACKBONE - ViaSat,Inc., US 22773 3111 4862 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 10620 2241 3406 AS10620 - Telmex Colombia S.A., CO 30036 2191 2538 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) ---------------------------------------------- 1:2019 2:2938 3:1783 4:6 5:5575 6:213 7:6 8:1344 9:113 11:172 12:1092 13:1422 14:2695 15:491 16:280 17:466 18:1840 20:609 21:4 22:188 23:8638 24:2801 25:2 27:2871 28:7 29:19 31:3942 32:36 34:94 35:293 36:4916 37:4444 38:10376 39:1434 40:454 41:4803 42:1055 43:3437 44:515 45:19891 46:5064 47:457 48:171 49:2330 50:2022 51:957 52:1429 54:445 55:1162 56:11 57:339 58:2675 59:1494 60:1197 61:3311 62:3187 63:1705 64:6635 65:2248 66:6312 67:3341 68:1304 69:4121 70:1098 71:610 72:3272 74:3161 75:1742 76:595 77:2927 78:2150 79:1901 80:2385 81:2327 82:4468 83:1509 84:2210 85:3894 86:1140 87:3101 88:1360 89:4945 90:777 91:8539 92:2775 93:3092 94:4719 95:4808 96:1460 97:305 98:946 99:1111 100:64 101:1363 102:5336 103:32350 104:5749 105:1362 106:931 107:2989 108:1876 109:3989 110:2233 111:4230 112:3200 113:1658 114:2606 115:2254 116:2097 117:3887 118:2508 119:2078 120:2863 121:1818 122:3056 123:2223 124:1935 125:2985 126:156 128:1598 129:1019 130:1753 131:2585 132:921 133:484 134:1815 135:666 136:1578 137:1406 138:3420 139:1817 140:1874 141:1879 142:2717 143:2349 144:1911 145:704 146:2233 147:2390 148:2874 149:3736 150:1448 151:3155 152:2465 153:2158 154:8868 155:2398 156:3910 157:2480 158:1659 159:2977 160:4152 161:2138 162:4242 163:2744 164:2455 165:2810 166:1257 167:2421 168:4274 169:975 170:5622 171:1135 172:4979 173:3481 174:895 175:1409 176:4066 177:5701 178:4704 179:2782 180:3358 181:4695 182:4077 183:2631 184:2222 185:22156 186:6518 187:5816 188:4824 189:4853 190:9943 191:1942 192:11879 193:9608 194:7977 195:5984 196:3735 197:3728 198:6277 199:6144 200:8288 201:6930 202:10485 203:10547 204:4757 205:3714 206:4483 207:3921 208:4341 209:5471 210:4632 211:2719 212:5253 213:4173 214:1030 215:50 216:7361 217:3825 218:1922 219:411 220:2236 221:1442 222:975 223:3628 End of report