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 12 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: 1068124 Prefixes after maximum aggregation (per Origin AS): 412744 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 532538 Number of IPv4 prefixes with a valid ROA: 743129 Number of IPv4 prefixes with an invalid ROA: 992 Number of IPv4 prefixes with no ROA: 324003 Total ASes present in the Internet Routing Table: 79221 Prefixes per ASN: 13.48 Origin-only ASes present in the Internet Routing Table: 67938 Origin ASes announcing only one prefix: 27733 Transit ASes present in the Internet Routing Table: 11283 Transit-only ASes present in the Internet Routing Table: 608 Paths with bogon ASNs present in the IPv4 Routing Table: 310 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: 1414 Number of instances of unregistered ASNs: 1428 Number of 32-bit ASNs allocated by the RIRs: 51178 Number of 32-bit ASNs visible in the Routing Table: 41618 Prefixes from 32-bit ASNs in the Routing Table: 241473 Number of bogon 32-bit ASNs visible in the Routing Table: 49 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 519 Number of addresses announced to Internet: 3125551872 Equivalent to 186 /8s, 76 /16s and 35 /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: 355351 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 283580 Total APNIC prefixes after maximum aggregation: 85655 APNIC Deaggregation factor: 3.31 Prefixes being announced from the APNIC address blocks: 270714 Unique aggregates announced from the APNIC address blocks: 110380 APNIC Region origin ASes present in the Internet Routing Table: 15306 APNIC Prefixes per ASN: 17.69 APNIC Region origin ASes announcing only one prefix: 4729 APNIC Region transit ASes present in the Internet Routing Table: 2035 Average APNIC Region AS path length visible: 5.1 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10937 Number of APNIC addresses announced to Internet: 748631040 Equivalent to 44 /8s, 159 /16s and 52 /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: 311014 Total ARIN prefixes after maximum aggregation: 138831 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 309441 Unique aggregates announced from the ARIN address blocks: 152144 ARIN Region origin ASes present in the Internet Routing Table: 19445 ARIN Prefixes per ASN: 15.91 ARIN Region origin ASes announcing only one prefix: 7149 ARIN Region transit ASes present in the Internet Routing Table: 1931 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: 5764 Number of ARIN addresses announced to Internet: 1355470080 Equivalent to 80 /8s, 202 /16s and 213 /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: 299956 Total RIPE prefixes after maximum aggregation: 148650 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 305199 Unique aggregates announced from the RIPE address blocks: 199229 RIPE Region origin ASes present in the Internet Routing Table: 29861 RIPE Prefixes per ASN: 10.22 RIPE Region origin ASes announcing only one prefix: 12351 RIPE Region transit ASes present in the Internet Routing Table: 4111 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: 13883 Number of RIPE addresses announced to Internet: 749747712 Equivalent to 44 /8s, 176 /16s and 62 /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: 131473 Total LACNIC prefixes after maximum aggregation: 31581 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 125473 Unique aggregates announced from the LACNIC address blocks: 51505 LACNIC Region origin ASes present in the Internet Routing Table: 11509 LACNIC Prefixes per ASN: 10.90 LACNIC Region origin ASes announcing only one prefix: 2777 LACNIC Region transit ASes present in the Internet Routing Table: 2637 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 35 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9583 Number of LACNIC addresses announced to Internet: 167509504 Equivalent to 9 /8s, 251 /16s and 254 /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: 40687 Total AfriNIC prefixes after maximum aggregation: 7203 AfriNIC Deaggregation factor: 5.65 Prefixes being announced from the AfriNIC address blocks: 56778 Unique aggregates announced from the AfriNIC address blocks: 18851 AfriNIC Region origin ASes present in the Internet Routing Table: 2089 AfriNIC Prefixes per ASN: 27.18 AfriNIC Region origin ASes announcing only one prefix: 727 AfriNIC Region transit ASes present in the Internet Routing Table: 375 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: 1451 Number of AfriNIC addresses announced to Internet: 103931648 Equivalent to 6 /8s, 49 /16s and 223 /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 14037 8735 127 CHINAMOBILE-CN - China Mobile Communicati 9498 5107 561 344 BBIL-AP - BHARTI Airtel Ltd., IN 7545 4633 825 315 TPG-INTERNET-AP - TPG Telecom Limited, AU 7552 4073 1331 24 VIETEL-AS-AP - Viettel Group, VN 56046 3631 888 178 CMNET-Jiangsu-AP - China Mobile communica 7713 3544 1043 69 telkomnet-as-ap - PT Telekomunikasi Indon 45899 3372 1868 98 VNPT-AS-VN - VNPT Corp, VN 140292 3084 315 1804 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK - 24560 2493 596 704 AIRTELBROADBAND-AS-AP - Bharti Airtel Ltd 4755 2273 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 17495 42649 5617 AMAZON-02 - Amazon.com, Inc., US 22773 4856 3168 417 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 3816 1305 74 SHAW - Shaw Communications, CA 396982 3503 5379 590 GOOGLE-CLOUD-PLATFORM - Google LLC, US 36352 3219 240 1145 AS-COLOCROSSING - HostPapa, US 749 3133 54663 2384 DNIC-AS-00749 - United States Department 7029 2795 2548 890 WINDSTREAM - Windstream Communications LL 31898 2759 1370 1150 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 6972 1709 149 UNI2-AS - Orange Espagne SA, ES 39891 4907 302 76 ALJAWWALSTC-AS - Saudi Telecom Company JS 9009 4219 378 2569 M247 - M247 Europe SRL, RO 20940 3930 3388 107 AKAMAI-ASN1 - Akamai International B.V., 212238 3589 260 2712 CDNEXT - Datacamp Limited, GB 12389 3123 2329 866 ROSTELECOM-AS - PJSC Rostelecom, RU 34984 2528 371 597 TELLCOM-AS - Superonline Iletisim Hizmetl 29355 2524 155 28 KCELL-AS - Kcell JSC, KZ 44559 1780 111 915 ITHOSTLINE - IT HOSTLINE LTD, CY 3257 1753 2087 991 GTT-BACKBONE - GTT Communications Inc., U 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 13177 3305 611 AS8151 - UNINET, MX 10620 3409 443 1116 AS10620 - Telmex Colombia S.A., CO 13999 2235 495 327 AS13999 - Mega Cable, S.A. de C.V., MX 11830 1875 369 65 AS11830 - Instituto Costarricense de Elec 11664 1507 277 34 AS11664 - Techtel LMDS Comunicaciones Int 28573 1377 2431 269 AS28573 - Claro NXT Telecomunicacoes Ltda 3816 1266 762 224 AS3816 - COLOMBIA TELECOMUNICACIONES S.A. 6147 1197 371 21 AS6147 - INTEGRATEL PERU S.A.A., PE 22884 1099 70 384 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 1979 509 28 Vodafone Data - Vodafone Data, EG 36992 1939 1543 328 ETISALAT MISR - ETISALAT MISR, EG 24863 1462 389 16 Link Egypt (Link.NET) - Link Egypt (Link. 36903 1353 589 106 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 1084 191 276 Dimension Data - Dimension Data, ZA 36873 636 141 45 Airtel Networks Limited - Airtel Networks 15399 593 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 17495 42649 5617 AMAZON-02 - Amazon.com, Inc., US 9808 14037 8735 127 CHINAMOBILE-CN - China Mobile Communicati 8151 13177 3305 611 AS8151 - UNINET, MX 12479 6972 1709 149 UNI2-AS - Orange Espagne SA, ES 9498 5107 561 344 BBIL-AP - BHARTI Airtel Ltd., IN 39891 4907 302 76 ALJAWWALSTC-AS - Saudi Telecom Company JS 22773 4856 3168 417 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 7545 4633 825 315 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 14037 13910 CHINAMOBILE-CN - China Mobile Communications Gr 8151 13177 12566 AS8151 - UNINET, MX 12479 6972 6823 UNI2-AS - Orange Espagne SA, ES 39891 4907 4831 ALJAWWALSTC-AS - Saudi Telecom Company JSC, SA 9498 5107 4763 BBIL-AP - BHARTI Airtel Ltd., IN 22773 4856 4439 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7545 4633 4318 TPG-INTERNET-AP - TPG Telecom Limited, AU 7155 4338 4251 VIASAT-SP-BACKBONE - ViaSat,Inc., US 7552 4073 4049 VIETEL-AS-AP - Viettel Group, VN 20940 3930 3823 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 /15:2142 /16:13763 /17:8301 /18:13351 /19:25512 /20:45342 /21:53498 /22:113528 /23:110330 /24:680106 /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 7343 13177 AS8151 - UNINET, MX 12479 5891 6972 UNI2-AS - Orange Espagne SA, ES 39891 3656 4907 ALJAWWALSTC-AS - Saudi Telecom Company JSC, SA 6327 3583 3816 SHAW - Shaw Communications, CA 11492 3520 4612 CABLEONE - CABLE ONE, INC., US 16509 3340 17495 AMAZON-02 - Amazon.com, Inc., US 7155 3269 4338 VIASAT-SP-BACKBONE - ViaSat,Inc., US 22773 3110 4856 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 10620 2244 3409 AS10620 - Telmex Colombia S.A., CO 30036 2192 2540 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) ---------------------------------------------- 1:2014 2:2930 3:1555 4:5 5:5372 6:215 7:6 8:1346 9:110 11:172 12:1093 13:1270 14:2688 15:491 16:278 17:464 18:1414 20:610 21:4 22:188 23:8634 24:2791 25:2 27:2870 28:7 29:19 31:3932 32:36 34:94 35:294 36:4922 37:4459 38:10338 39:1431 40:462 41:4799 42:1055 43:3416 44:514 45:19916 46:5052 47:459 48:171 49:2306 50:2011 51:959 52:1403 54:408 55:1160 56:11 57:339 58:2427 59:1494 60:1196 61:3328 62:3189 63:1702 64:6646 65:2241 66:6301 67:3336 68:1301 69:4088 70:1088 71:606 72:3294 74:3137 75:1733 76:592 77:2934 78:2149 79:1924 80:2390 81:2324 82:4399 83:1494 84:2168 85:3889 86:1137 87:3091 88:1343 89:4924 90:769 91:8523 92:2752 93:3070 94:4681 95:4791 96:1456 97:304 98:944 99:1091 100:65 101:1364 102:5378 103:32360 104:5721 105:1372 106:929 107:3003 108:1547 109:3996 110:2237 111:4218 112:3157 113:1651 114:2603 115:2253 116:2100 117:3879 118:2510 119:2081 120:2860 121:1815 122:3059 123:2218 124:1806 125:2982 126:156 128:1588 129:1014 130:1751 131:2555 132:888 133:484 134:1806 135:677 136:1596 137:1405 138:3464 139:1817 140:1879 141:1885 142:2697 143:2340 144:1905 145:710 146:2239 147:2391 148:2862 149:3735 150:1421 151:3064 152:2459 153:2101 154:9159 155:2386 156:3948 157:2466 158:1662 159:2953 160:4118 161:2103 162:4239 163:2730 164:2443 165:2768 166:1255 167:2405 168:4269 169:974 170:5615 171:1132 172:4968 173:3469 174:895 175:1414 176:4073 177:5682 178:4704 179:2763 180:3350 181:4692 182:4076 183:2632 184:2214 185:22108 186:6573 187:5820 188:4801 189:4837 190:9954 191:1936 192:11835 193:9613 194:7977 195:5981 196:3735 197:3715 198:6191 199:6133 200:8321 201:6914 202:10489 203:10552 204:4744 205:3704 206:4460 207:3926 208:4322 209:5468 210:4629 211:2721 212:5255 213:4180 214:1026 215:50 216:7356 217:3822 218:1923 219:412 220:2235 221:1440 222:979 223:3618 End of report