IPv4 R&E Routing Table Report 22:15 GMT Wed 18 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: 26757 Prefixes after maximum aggregation (per Origin AS): 13407 Deaggregation factor: 2.00 Unique aggregates announced (without unneeded subnets): 15416 Number of IPv4 prefixes with a valid ROA: 16459 Number of IPv4 prefixes with an invalid ROA: 14 Number of IPv4 prefixes with no ROA: 10284 Total ASes present in the Internet Routing Table: 2773 Prefixes per ASN: 9.65 Origin-only ASes present in the Internet Routing Table: 2399 Origin ASes announcing only one prefix: 1077 Transit ASes present in the Internet Routing Table: 374 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: 3.7 Max AS path length visible: 20 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 4 Number of instances of unregistered ASNs: 4 Number of 32-bit ASNs allocated by the RIRs: 49005 Number of 32-bit ASNs visible in the Routing Table: 723 Prefixes from 32-bit ASNs in the Routing Table: 5439 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: 246418753 Equivalent to 14 /8s, 176 /16s and 13 /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: 3696 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4864 Total APNIC prefixes after maximum aggregation: 2372 APNIC Deaggregation factor: 2.05 Prefixes being announced from the APNIC address blocks: 4960 Unique aggregates announced from the APNIC address blocks: 2711 APNIC Region origin ASes present in the Internet Routing Table: 612 APNIC Prefixes per ASN: 8.10 APNIC Region origin ASes announcing only one prefix: 263 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: 253 Number of APNIC addresses announced to Internet: 45515072 Equivalent to 2 /8s, 182 /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: 15921 Total ARIN prefixes after maximum aggregation: 7594 ARIN Deaggregation factor: 2.10 Prefixes being announced from the ARIN address blocks: 15500 Unique aggregates announced from the ARIN address blocks: 8589 ARIN Region origin ASes present in the Internet Routing Table: 1308 ARIN Prefixes per ASN: 11.85 ARIN Region origin ASes announcing only one prefix: 464 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: 234 Number of ARIN addresses announced to Internet: 136724512 Equivalent to 8 /8s, 38 /16s and 64 /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: 3439 Total RIPE prefixes after maximum aggregation: 2741 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3741 Unique aggregates announced from the RIPE address blocks: 3144 RIPE Region origin ASes present in the Internet Routing Table: 607 RIPE Prefixes per ASN: 6.16 RIPE Region origin ASes announcing only one prefix: 271 RIPE Region transit ASes present in the Internet Routing Table: 104 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: 156 Number of RIPE addresses announced to Internet: 57802113 Equivalent to 3 /8s, 113 /16s and 253 /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: 1307 Total LACNIC prefixes after maximum aggregation: 484 LACNIC Deaggregation factor: 2.70 Prefixes being announced from the LACNIC address blocks: 1319 Unique aggregates announced from the LACNIC address blocks: 665 LACNIC Region origin ASes present in the Internet Routing Table: 131 LACNIC Prefixes per ASN: 10.07 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: 3966816 Equivalent to 0 /8s, 60 /16s and 135 /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: 1222 Total AfriNIC prefixes after maximum aggregation: 212 AfriNIC Deaggregation factor: 5.76 Prefixes being announced from the AfriNIC address blocks: 1232 Unique aggregates announced from the AfriNIC address blocks: 302 AfriNIC Region origin ASes present in the Internet Routing Table: 43 AfriNIC Prefixes per ASN: 28.65 AfriNIC Region origin ASes announcing only one prefix: 21 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 4.8 Max AfriNIC Region AS path length visible: 10 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 21 Number of AfriNIC addresses announced to Internet: 2406912 Equivalent to 0 /8s, 36 /16s and 186 /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 661 2153 462 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 165 281 112 AARNET-AS-AP Australian Academic and Rese 55824 152 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 3292 4856 485 GOOGLE-CLOUD-PLATFORM - Google LLC, US 16509 2248 2034 1262 AMAZON-02 - Amazon.com, Inc., US 14618 1251 4877 953 AMAZON-AES - Amazon.com, Inc., US 15169 884 183 41 GOOGLE - Google LLC, US 376 197 162 151 RISQ-AS - Reseau dInformations Scientifiq 5786 197 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 110 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 21612 27 16 1 FUNDACAO INSTITUTO OSWALDO CRUZ, BR 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 375 318 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 30983 12 4 2 MARWAN-AS, MA 37501 11 49 6 UOFS, ZA 327700 10 1 10 MoRENet, MZ 37182 9 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 3292 4856 485 GOOGLE-CLOUD-PLATFORM - Google LLC, US 16509 2248 2034 1262 AMAZON-02 - Amazon.com, Inc., US 14618 1251 4877 953 AMAZON-AES - Amazon.com, Inc., US 15169 884 183 41 GOOGLE - Google LLC, US 2907 661 2153 462 SINET-AS Research Organization of Informa 36914 553 82 3 KENET-AS, KE 7497 454 180 23 CSTNET-AS-AP Computer Network Information 2018 375 318 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 2248 986 AMAZON-02 - Amazon.com, Inc., US 15169 884 843 GOOGLE - Google LLC, US 36914 553 550 KENET-AS, KE 7497 454 431 CSTNET-AS-AP Computer Network Information Cente 2018 375 306 TENET-1, ZA 14618 1251 298 AMAZON-AES - Amazon.com, Inc., US 1916 290 247 Rede Nacional de Ensino e Pesquisa, BR 2907 661 199 SINET-AS Research Organization of Information a 5786 197 196 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 401367 UNALLOCATED 216.186.25.0/24 10430 WA-K20 - Washington Sta 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 /16:2085 /17:555 /18:547 /19:818 /20:2813 /21:1106 /22:1675 /23:1828 /24:14747 /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 424 2248 AMAZON-02 - Amazon.com, Inc., US 14618 381 1251 AMAZON-AES - Amazon.com, Inc., US 396982 283 3292 GOOGLE-CLOUD-PLATFORM - Google LLC, US 15169 278 884 GOOGLE - Google LLC, US 8895 100 103 ISU Internet Services Unit ISU, SA 1916 86 290 Rede Nacional de Ensino e Pesquisa, BR 2907 59 661 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 14:95 15:91 16:15 18:88 23:119 24:12 31:8 34:31 35:77 36:1 37:26 38:12 40:5 41:229 42:17 43:2 44:6 45:70 46:9 47:1 49:13 50:13 52:361 54:42 57:6 58:14 59:20 60:6 61:3 62:7 63:36 64:155 65:21 66:100 67:69 68:20 69:61 70:10 72:24 74:167 75:1 76:42 77:6 78:3 79:9 80:10 81:27 82:5 83:6 84:9 85:33 86:4 87:5 88:1 89:28 91:51 92:5 93:46 94:4 95:2 96:9 97:1 98:11 99:52 101:5 102:10 103:385 104:246 107:41 108:82 109:19 110:1 111:7 113:3 114:32 116:11 117:7 118:33 119:27 121:18 122:8 123:8 124:42 125:5 128:58 129:53 130:123 131:73 132:65 133:157 134:122 135:5 136:268 137:78 138:14 139:17 140:45 141:13 142:344 143:32 144:22 145:7 146:136 147:82 148:246 149:20 150:37 151:44 152:138 153:61 154:43 155:118 156:127 157:44 158:38 159:178 160:38 161:46 162:99 163:87 164:21 165:75 166:3 167:53 168:162 169:13 170:87 171:1 172:174 173:118 174:2 175:15 176:3 177:6 178:1 179:12 180:16 181:2 182:11 184:3 185:112 186:4 187:8 188:27 190:17 191:13 192:1647 193:332 194:110 195:101 196:149 197:345 198:521 199:342 200:301 201:8 202:610 203:443 204:417 205:154 206:229 207:262 208:132 209:178 210:232 211:15 212:149 213:16 216:221 217:26 218:21 219:7 220:16 222:4 223:17 End of report