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 16 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: 1045155 Prefixes after maximum aggregation (per Origin AS): 401929 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 517488 Number of IPv4 prefixes with a valid ROA: 644876 Number of IPv4 prefixes with an invalid ROA: 1130 Number of IPv4 prefixes with no ROA: 399149 Total ASes present in the Internet Routing Table: 78495 Prefixes per ASN: 13.31 Origin-only ASes present in the Internet Routing Table: 67328 Origin ASes announcing only one prefix: 27421 Transit ASes present in the Internet Routing Table: 11167 Transit-only ASes present in the Internet Routing Table: 603 Paths with bogon ASNs present in the IPv4 Routing Table: 270 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: 1283 Number of instances of unregistered ASNs: 1313 Number of 32-bit ASNs allocated by the RIRs: 49776 Number of 32-bit ASNs visible in the Routing Table: 40632 Prefixes from 32-bit ASNs in the Routing Table: 231420 Number of bogon 32-bit ASNs visible in the Routing Table: 100 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 455 Number of addresses announced to Internet: 3103400192 Equivalent to 184 /8s, 250 /16s and 33 /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: 345125 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 280063 Total APNIC prefixes after maximum aggregation: 82925 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 266240 Unique aggregates announced from the APNIC address blocks: 107947 APNIC Region origin ASes present in the Internet Routing Table: 15156 APNIC Prefixes per ASN: 17.57 APNIC Region origin ASes announcing only one prefix: 4656 APNIC Region transit ASes present in the Internet Routing Table: 2023 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: 10767 Number of APNIC addresses announced to Internet: 747429632 Equivalent to 44 /8s, 140 /16s and 223 /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: 302364 Total ARIN prefixes after maximum aggregation: 136571 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 301858 Unique aggregates announced from the ARIN address blocks: 147730 ARIN Region origin ASes present in the Internet Routing Table: 19410 ARIN Prefixes per ASN: 15.55 ARIN Region origin ASes announcing only one prefix: 7121 ARIN Region transit ASes present in the Internet Routing Table: 1925 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: 5581 Number of ARIN addresses announced to Internet: 1347558400 Equivalent to 80 /8s, 82 /16s and 28 /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: 291740 Total RIPE prefixes after maximum aggregation: 143598 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 294552 Unique aggregates announced from the RIPE address blocks: 191591 RIPE Region origin ASes present in the Internet Routing Table: 29513 RIPE Prefixes per ASN: 9.98 RIPE Region origin ASes announcing only one prefix: 12226 RIPE Region transit ASes present in the Internet Routing Table: 4054 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: 13435 Number of RIPE addresses announced to Internet: 734206208 Equivalent to 43 /8s, 195 /16s and 25 /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: 129971 Total LACNIC prefixes after maximum aggregation: 30860 LACNIC Deaggregation factor: 4.21 Prefixes being announced from the LACNIC address blocks: 124369 Unique aggregates announced from the LACNIC address blocks: 50298 LACNIC Region origin ASes present in the Internet Routing Table: 11401 LACNIC Prefixes per ASN: 10.91 LACNIC Region origin ASes announcing only one prefix: 2713 LACNIC Region transit ASes present in the Internet Routing Table: 2596 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: 9452 Number of LACNIC addresses announced to Internet: 169750528 Equivalent to 10 /8s, 30 /16s and 48 /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: 39734 Total AfriNIC prefixes after maximum aggregation: 7215 AfriNIC Deaggregation factor: 5.51 Prefixes being announced from the AfriNIC address blocks: 57681 Unique aggregates announced from the AfriNIC address blocks: 19535 AfriNIC Region origin ASes present in the Internet Routing Table: 2032 AfriNIC Prefixes per ASN: 28.39 AfriNIC Region origin ASes announcing only one prefix: 705 AfriNIC Region transit ASes present in the Internet Routing Table: 381 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: 1397 Number of AfriNIC addresses announced to Internet: 104252672 Equivalent to 6 /8s, 54 /16s and 197 /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 13895 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5883 826 481 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4937 551 328 BBIL-AP BHARTI Airtel Ltd., IN 7552 4066 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3722 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3544 888 178 CMNET-JIANGSU-AP China Mobile communicati 17561 3442 216 605 LCS-AS-AP LARUS Limited, HK 45899 3363 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 2743 745 740 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 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 14961 41325 5694 AMAZON-02 - Amazon.com, Inc., US 22773 4787 3100 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4592 305 1088 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3715 1305 75 SHAW - Shaw Communications, CA 396982 3342 4865 506 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3139 54728 2390 DNIC-AS-00749 - United States Department 36352 2912 222 913 AS-COLOCROSSING - HostPapa, US 7029 2637 2558 894 WINDSTREAM - Windstream Communications LL 30036 2607 359 469 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 7127 1711 149 UNI2-AS, ES 39891 4975 307 72 ALJAWWALSTC-AS, SA 9009 3952 363 2331 M247, RO 20940 3914 3389 110 AKAMAI-ASN1, NL 12389 3138 2321 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2792 205 2063 CDNEXT, GB 34984 2492 367 583 TELLCOM-AS, TR 8452 1689 1852 14 TE-AS TE-AS, EG 203020 1662 252 831 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 12745 3254 632 UNINET, MX 10620 3434 450 1103 Telmex Colombia S.A., CO 13999 2363 498 346 Mega Cable, S.A. de C.V., MX 11830 1937 369 65 Instituto Costarricense de Electricidad y 11664 1450 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1367 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1228 371 22 INTEGRATEL PERU S.A.A., PE 22884 1077 71 364 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 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 36992 1860 1532 340 ETISALAT-MISR, EG 24835 1807 649 36 RAYA-AS, EG 20011 1341 206 353 NTT-DATA-Inc, ZA 24863 1271 389 16 LINKdotNET-AS, EG 36935 1262 523 45 Vodafone-, EG 36903 1231 555 97 MT-MPLS, MA 37069 1117 1100 11 MOBINIL, EG 29571 1077 70 18 ORANGE-COTE-IVOIRE, CI 328608 615 56 163 Africa-on-Cloud-AS, ZA 15399 555 57 59 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 14961 41325 5694 AMAZON-02 - Amazon.com, Inc., US 9808 13895 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12745 3254 632 UNINET, MX 12479 7127 1711 149 UNI2-AS, ES 7545 5883 826 481 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 307 72 ALJAWWALSTC-AS, SA 9498 4937 551 328 BBIL-AP BHARTI Airtel Ltd., IN 22773 4787 3100 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4592 305 1088 CABLEONE - CABLE ONE, INC., US 7552 4066 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 13895 13774 CHINAMOBILE-CN China Mobile Communications Grou 8151 12745 12113 UNINET, MX 12479 7127 6978 UNI2-AS, ES 7545 5883 5402 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 4903 ALJAWWALSTC-AS, SA 9498 4937 4609 BBIL-AP BHARTI Airtel Ltd., IN 22773 4787 4423 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4066 4038 VIETEL-AS-AP Viettel Group, VN 20940 3914 3804 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 /12:298 /13:583 /14:1190 /15:2104 /16:13608 /17:8297 /18:13357 /19:25438 /20:45533 /21:52380 /22:113413 /23:108092 /24:660698 /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 6964 12745 UNINET, MX 12479 6064 7127 UNI2-AS, ES 39891 3660 4975 ALJAWWALSTC-AS, SA 6327 3497 3715 SHAW - Shaw Communications, CA 11492 3468 4592 CABLEONE - CABLE ONE, INC., US 22773 3064 4787 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2709 14961 AMAZON-02 - Amazon.com, Inc., US 30036 2260 2607 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2238 3434 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) ---------------------------------------------- 1:2031 2:2086 3:1000 4:5 5:5115 6:201 7:6 8:1489 9:59 11:172 12:1147 13:706 14:2702 15:466 16:209 17:443 18:916 20:599 21:4 22:188 23:8395 24:2773 25:2 27:2749 28:1 29:19 31:3574 32:37 34:91 35:284 36:4783 37:4446 38:9669 39:1298 40:442 41:4765 42:1295 43:3141 44:454 45:19935 46:4887 47:413 48:129 49:2243 50:2008 51:723 52:1329 54:286 55:1104 56:11 57:330 58:2325 59:1372 60:1175 61:3156 62:3151 63:1688 64:6395 65:2152 66:6141 67:3270 68:1510 69:4228 70:1062 71:607 72:3195 74:3053 75:1501 76:599 77:2952 78:2042 79:1795 80:2352 81:2274 82:4148 83:1459 84:2157 85:3843 86:1096 87:2658 88:1342 89:4780 90:796 91:8466 92:2789 93:3039 94:4411 95:4743 96:1447 97:309 98:949 99:834 100:70 101:1361 102:5038 103:32358 104:5395 105:1219 106:900 107:2947 108:1270 109:4299 110:2283 111:4123 112:3184 113:1890 114:2384 115:2236 116:2087 117:3489 118:2698 119:2029 120:2728 121:1524 122:3000 123:2278 124:1654 125:3003 126:158 128:1567 129:1001 130:1662 131:2480 132:879 133:486 134:1724 135:620 136:1479 137:1363 138:3393 139:1621 140:1771 141:1753 142:2570 143:2044 144:1777 145:638 146:2182 147:2243 148:2798 149:3159 150:1335 151:2908 152:2339 153:1605 154:9782 155:2299 156:5161 157:2334 158:1581 159:2872 160:3864 161:1973 162:4076 163:2576 164:2438 165:2671 166:1285 167:2321 168:4108 169:886 170:5617 171:1136 172:4807 173:3467 174:883 175:1349 176:3958 177:5058 178:4405 179:2392 180:3046 181:4569 182:4024 183:2804 184:2022 185:21983 186:6179 187:5068 188:4517 189:4537 190:9931 191:2000 192:11523 193:9647 194:7909 195:5838 196:3693 197:3996 198:6127 199:6055 200:8133 201:6405 202:10464 203:10489 204:4770 205:3691 206:4402 207:3840 208:4362 209:5423 210:4623 211:2684 212:5101 213:4121 214:1040 215:47 216:7297 217:3623 218:1705 219:412 220:2181 221:1317 222:936 223:3442 End of report