IPv4 R&E Routing Table Report 22:15 GMT Fri 13 Mar, 2026 IPv4 BGP Table (R&E) as seen at RedCLARA. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/RedCLARA/ Analysis Summary ---------------- BGP routing table entries examined: 26736 Prefixes after maximum aggregation (per Origin AS): 13380 Deaggregation factor: 2.00 Unique aggregates announced (without unneeded subnets): 15384 Number of IPv4 prefixes with a valid ROA: 16431 Number of IPv4 prefixes with an invalid ROA: 14 Number of IPv4 prefixes with no ROA: 10291 Total ASes present in the Internet Routing Table: 2769 Prefixes per ASN: 9.66 Origin-only ASes present in the Internet Routing Table: 2394 Origin ASes announcing only one prefix: 1075 Transit ASes present in the Internet Routing Table: 375 Transit-only ASes present in the Internet Routing Table: 68 Paths with bogon ASNs present in the IPv4 Routing Table: 1 Average AS path length visible in the Internet Routing Table: 3.6 Max AS path length visible: 20 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 13 Number of instances of unregistered ASNs: 13 Number of 32-bit ASNs allocated by the RIRs: 48926 Number of 32-bit ASNs visible in the Routing Table: 717 Prefixes from 32-bit ASNs in the Routing Table: 5442 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 5 Number of addresses announced to Internet: 246327105 Equivalent to 14 /8s, 174 /16s and 167 /24s Percentage of available address space announced: 6.7 Percentage of allocated address space announced: 6.7 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: 3703 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4857 Total APNIC prefixes after maximum aggregation: 2372 APNIC Deaggregation factor: 2.05 Prefixes being announced from the APNIC address blocks: 4955 Unique aggregates announced from the APNIC address blocks: 2709 APNIC Region origin ASes present in the Internet Routing Table: 614 APNIC Prefixes per ASN: 8.07 APNIC Region origin ASes announcing only one prefix: 264 APNIC Region transit ASes present in the Internet Routing Table: 54 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 12 Number of APNIC region 32-bit ASNs visible in the Routing Table: 255 Number of APNIC addresses announced to Internet: 45384000 Equivalent to 2 /8s, 180 /16s and 129 /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: 15906 Total ARIN prefixes after maximum aggregation: 7590 ARIN Deaggregation factor: 2.10 Prefixes being announced from the ARIN address blocks: 15494 Unique aggregates announced from the ARIN address blocks: 8580 ARIN Region origin ASes present in the Internet Routing Table: 1309 ARIN Prefixes per ASN: 11.84 ARIN Region origin ASes announcing only one prefix: 466 ARIN Region transit ASes present in the Internet Routing Table: 162 Average ARIN Region AS path length visible: 3.4 Max ARIN Region AS path length visible: 20 Number of ARIN region 32-bit ASNs visible in the Routing Table: 235 Number of ARIN addresses announced to Internet: 136720672 Equivalent to 8 /8s, 38 /16s and 49 /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, 393216-402332 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: 3436 Total RIPE prefixes after maximum aggregation: 2734 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3736 Unique aggregates announced from the RIPE address blocks: 3140 RIPE Region origin ASes present in the Internet Routing Table: 606 RIPE Prefixes per ASN: 6.17 RIPE Region origin ASes announcing only one prefix: 271 RIPE Region transit ASes present in the Internet Routing Table: 105 Average RIPE Region AS path length visible: 3.8 Max RIPE Region AS path length visible: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 155 Number of RIPE addresses announced to Internet: 57801089 Equivalent to 3 /8s, 113 /16s and 249 /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: 1298 Total LACNIC prefixes after maximum aggregation: 484 LACNIC Deaggregation factor: 2.68 Prefixes being announced from the LACNIC address blocks: 1310 Unique aggregates announced from the LACNIC address blocks: 664 LACNIC Region origin ASes present in the Internet Routing Table: 131 LACNIC Prefixes per ASN: 10.00 LACNIC Region origin ASes announcing only one prefix: 58 LACNIC Region transit ASes present in the Internet Routing Table: 26 Average LACNIC Region AS path length visible: 3.8 Max LACNIC Region AS path length visible: 14 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 59 Number of LACNIC addresses announced to Internet: 3966560 Equivalent to 0 /8s, 60 /16s and 134 /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: 1226 Total AfriNIC prefixes after maximum aggregation: 195 AfriNIC Deaggregation factor: 6.29 Prefixes being announced from the AfriNIC address blocks: 1236 Unique aggregates announced from the AfriNIC address blocks: 286 AfriNIC Region origin ASes present in the Internet Routing Table: 36 AfriNIC Prefixes per ASN: 34.33 AfriNIC Region origin ASes announcing only one prefix: 16 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 2.8 Max AfriNIC Region AS path length visible: 6 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 13 Number of AfriNIC addresses announced to Internet: 2451456 Equivalent to 0 /8s, 37 /16s and 104 /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 2907 659 2121 461 SINET-AS Research Organization of Informa 7497 454 180 23 CSTNET-AS-AP Computer Network Information 1237 200 72 154 KREONET-AS-KR KISTI, KR 4538 184 4192 72 ERX-CERNET-BKB China Education and Resear 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 164 281 111 AARNET-AS-AP Australian Academic and Rese 55824 153 19 21 NKN-CORE-NW NKN Core Network, IN 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 6262 63 134 56 CSIRO Commonwealth Scientific and Industr 1659 61 1466 35 ERX-TANET-ASN1 Taiwan Academic Network TA Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 396982 3291 4856 486 GOOGLE-CLOUD-PLATFORM - Google LLC, US 16509 2252 2035 1265 AMAZON-02 - Amazon.com, Inc., US 14618 1248 4878 950 AMAZON-AES - Amazon.com, Inc., US 15169 885 183 41 GOOGLE - Google LLC, US 376 197 162 151 RISQ-AS - Reseau dInformations Scientifiq 5786 196 16 1 UPRENET - University of Puerto Rico, PR 2920 173 34 7 LACOE - Los Angeles County Office of Educ 2152 147 491 96 CENIC-2152 - CENIC, US 18558 140 18 4 NETBLK-RCOEK - Riverside County Office of 81 115 455 35 NCREN - MCNC, US Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 291 1883 253 DFN Verein zur Foerderung eines Deutschen 786 209 1731 188 JANET Jisc Services Limited, GB 559 115 533 105 SWITCH Switch, Swiss Academic and Researc 8895 103 24 5 ISU Internet Services Unit ISU, SA 1103 100 1759 85 SURFNET-NL SURFnet, The Netherlands, NL 2614 87 26 67 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 78 88 73 RCCN Fundacao para a Ciencia e a Tecnolog 553 75 366 75 BELWUE BelWue-Koordination, DE 2200 64 630 59 FR-RENATER Reseau National de telecommuni Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 290 161 43 Rede Nacional de Ensino e Pesquisa, BR 28391 161 10 72 Universidad Juarez Autonoma de Tabasco, M 11340 109 25 49 Red Universitaria Nacional, CL 3596 69 8 4 Universidad Autonoma Metropolitana, MX 271640 66 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 57 84 39 Fundacao Carlos Chagas Filho de Amparo a 19611 53 17 2 Associacao Antonio Vieira - Unisinos, BR 61468 52 3 21 CEDIA, EC 1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 20191 26 16 1 Pontificia Universidad Catolica de Chile, Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 553 82 3 KENET-AS, KE 2018 374 318 69 TENET-1, ZA 2561 68 4 34 EUN, EG 8094 46 48 21 PUKNET, ZA 37215 44 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 327700 23 16 1 MoRENet, MZ 30983 12 4 2 MARWAN-AS, MA 37501 11 49 6 UOFS, ZA 37182 10 8 1 TERNET, TZ Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 396982 3291 4856 486 GOOGLE-CLOUD-PLATFORM - Google LLC, US 16509 2252 2035 1265 AMAZON-02 - Amazon.com, Inc., US 14618 1248 4878 950 AMAZON-AES - Amazon.com, Inc., US 15169 885 183 41 GOOGLE - Google LLC, US 2907 659 2121 461 SINET-AS Research Organization of Informa 36914 553 82 3 KENET-AS, KE 7497 454 180 23 CSTNET-AS-AP Computer Network Information 2018 374 318 69 TENET-1, ZA 680 291 1883 253 DFN Verein zur Foerderung eines Deutschen 1916 290 161 43 Rede Nacional de Ensino e Pesquisa, BR Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 16509 2252 987 AMAZON-02 - Amazon.com, Inc., US 15169 885 844 GOOGLE - Google LLC, US 36914 553 550 KENET-AS, KE 7497 454 431 CSTNET-AS-AP Computer Network Information Cente 2018 374 305 TENET-1, ZA 14618 1248 298 AMAZON-AES - Amazon.com, Inc., US 1916 290 247 Rede Nacional de Ensino e Pesquisa, BR 2907 659 198 SINET-AS Research Organization of Information a 5786 196 195 UPRENET - University of Puerto Rico, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276 - University 64011 UNALLOCATED 130.215.0.0/16 10326 WPI - Worcester Polytec 64510 DOCUMENT 185.48.234.168/32 200999 PL-CLOUDFERRO, PL 396334 UNALLOCATED 205.143.136.0/21 5078 ONENET-AS-1 - Oklahoma 396334 UNALLOCATED 205.143.136.0/24 5078 ONENET-AS-1 - Oklahoma 396334 UNALLOCATED 205.143.137.0/24 5078 ONENET-AS-1 - Oklahoma 396334 UNALLOCATED 205.143.138.0/24 5078 ONENET-AS-1 - Oklahoma 396334 UNALLOCATED 205.143.139.0/24 5078 ONENET-AS-1 - Oklahoma 396334 UNALLOCATED 205.143.140.0/24 5078 ONENET-AS-1 - Oklahoma 396334 UNALLOCATED 205.143.141.0/24 5078 ONENET-AS-1 - Oklahoma Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 103.177.50.0/23 Origin: 396982 GOOGLE-CLOUD-PLATFORM - Google LLC, US 103.177.50.0/23 Transit: 15169 GOOGLE - Google LLC, US 113.212.76.0/24 Origin: 396982 GOOGLE-CLOUD-PLATFORM - Google LLC, US 113.212.76.0/24 Transit: 15169 GOOGLE - Google LLC, US 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U 202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH 203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP Adelaide Unive 203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res Complete listing at https://bgp.nsrc.org/REN/RedCLARA/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 /8:0 /9:1 /10:1 /11:5 /12:21 /13:39 /14:87 /15:165 /16:2084 /17:555 /18:546 /19:816 /20:2813 /21:1107 /22:1671 /23:1821 /24:14740 /25:65 /26:81 /27:49 /28:6 /29:4 /30:5 /31:0 /32:54 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 529 553 KENET-AS, KE 16509 421 2252 AMAZON-02 - Amazon.com, Inc., US 14618 379 1248 AMAZON-AES - Amazon.com, Inc., US 396982 284 3291 GOOGLE-CLOUD-PLATFORM - Google LLC, US 15169 279 885 GOOGLE - Google LLC, US 8895 100 103 ISU Internet Services Unit ISU, SA 1916 86 290 Rede Nacional de Ensino e Pesquisa, BR 2907 59 659 SINET-AS Research Organization of Information and Systems, National Institute of Informatics, JP 31638 48 48 ASN-LEPIDA, IT 37215 38 44 MAREN, MW Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:11 2:1 3:134 5:30 8:39 12:2 13:66 14:96 15:91 16:15 18:88 23:120 24:12 31:8 34:31 35:77 36:1 37:26 38:12 40:5 41:246 42:17 43:2 44:6 45:70 46:8 47:1 49:13 50:13 52:361 54:42 57:6 58:14 59:20 60:6 61:3 62:7 63:36 64:154 65:21 66:101 67:69 68:20 69:61 70:11 72:24 74:167 75:1 76:42 77:10 78:3 79:9 80:10 81:27 82:5 83:6 84:5 85:33 86:4 87:5 88:1 89:27 91:51 92:5 93:46 94:4 95:2 96:9 97:1 98:11 99:52 101:5 102:8 103:390 104:247 107:41 108:82 109:19 110:1 111:3 113:3 114:32 116:11 117:7 118:33 119:27 121:18 122:8 123:8 124:42 125:5 128:58 129:53 130:123 131:73 132:65 133:157 134:125 135:5 136:267 137:78 138:14 139:17 140:45 141:13 142:343 143:32 144:22 145:6 146:135 147:82 148:246 149:20 150:37 151:44 152:138 153:61 154:43 155:118 156:127 157:37 158:37 159:178 160:38 161:46 162:99 163:87 164:21 165:69 166:3 167:53 168:162 169:13 170:87 171:1 172:174 173:118 174:2 175:15 176:3 177:6 178:1 179:12 180:16 181:2 182:11 184:3 185:112 186:4 187:8 188:27 190:17 191:13 192:1647 193:332 194:110 195:99 196:147 197:341 198:520 199:341 200:301 201:8 202:611 203:443 204:418 205:154 206:228 207:262 208:132 209:178 210:232 211:15 212:149 213:16 216:220 217:26 218:21 219:7 220:16 222:4 223:17 End of report