IPv4 R&E Routing Table Report 22:15 GMT Thu 21 May, 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: 26958 Prefixes after maximum aggregation (per Origin AS): 13482 Deaggregation factor: 2.00 Unique aggregates announced (without unneeded subnets): 15601 Number of IPv4 prefixes with a valid ROA: 16922 Number of IPv4 prefixes with an invalid ROA: 10 Number of IPv4 prefixes with no ROA: 10026 Total ASes present in the Internet Routing Table: 2747 Prefixes per ASN: 9.81 Origin-only ASes present in the Internet Routing Table: 2387 Origin ASes announcing only one prefix: 1065 Transit ASes present in the Internet Routing Table: 360 Transit-only ASes present in the Internet Routing Table: 58 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: 23 Max AS path prepend of ASN ( 41264) 21 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: 49849 Number of 32-bit ASNs visible in the Routing Table: 724 Prefixes from 32-bit ASNs in the Routing Table: 5498 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: 6 Number of addresses announced to Internet: 247131521 Equivalent to 14 /8s, 186 /16s and 237 /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: 4872 Total APNIC prefixes after maximum aggregation: 2363 APNIC Deaggregation factor: 2.06 Prefixes being announced from the APNIC address blocks: 4970 Unique aggregates announced from the APNIC address blocks: 2713 APNIC Region origin ASes present in the Internet Routing Table: 607 APNIC Prefixes per ASN: 8.19 APNIC Region origin ASes announcing only one prefix: 262 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: 254 Number of APNIC addresses announced to Internet: 45641792 Equivalent to 2 /8s, 184 /16s and 112 /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: 16254 Total ARIN prefixes after maximum aggregation: 7764 ARIN Deaggregation factor: 2.09 Prefixes being announced from the ARIN address blocks: 15817 Unique aggregates announced from the ARIN address blocks: 8929 ARIN Region origin ASes present in the Internet Routing Table: 1309 ARIN Prefixes per ASN: 12.08 ARIN Region origin ASes announcing only one prefix: 465 ARIN Region transit ASes present in the Internet Routing Table: 157 Average ARIN Region AS path length visible: 3.4 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 238 Number of ARIN addresses announced to Internet: 137614592 Equivalent to 8 /8s, 51 /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: 3443 Total RIPE prefixes after maximum aggregation: 2745 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3758 Unique aggregates announced from the RIPE address blocks: 3161 RIPE Region origin ASes present in the Internet Routing Table: 603 RIPE Prefixes per ASN: 6.23 RIPE Region origin ASes announcing only one prefix: 268 RIPE Region transit ASes present in the Internet Routing Table: 103 Average RIPE Region AS path length visible: 3.8 Max RIPE Region AS path length visible: 23 Number of RIPE region 32-bit ASNs visible in the Routing Table: 155 Number of RIPE addresses announced to Internet: 57568129 Equivalent to 3 /8s, 110 /16s and 107 /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: 1161 Total LACNIC prefixes after maximum aggregation: 405 LACNIC Deaggregation factor: 2.87 Prefixes being announced from the LACNIC address blocks: 1173 Unique aggregates announced from the LACNIC address blocks: 501 LACNIC Region origin ASes present in the Internet Routing Table: 123 LACNIC Prefixes per ASN: 9.54 LACNIC Region origin ASes announcing only one prefix: 50 LACNIC Region transit ASes present in the Internet Routing Table: 21 Average LACNIC Region AS path length visible: 3.3 Max LACNIC Region AS path length visible: 8 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 56 Number of LACNIC addresses announced to Internet: 3848128 Equivalent to 0 /8s, 58 /16s and 183 /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: 1224 Total AfriNIC prefixes after maximum aggregation: 201 AfriNIC Deaggregation factor: 6.09 Prefixes being announced from the AfriNIC address blocks: 1234 Unique aggregates announced from the AfriNIC address blocks: 291 AfriNIC Region origin ASes present in the Internet Routing Table: 43 AfriNIC Prefixes per ASN: 28.70 AfriNIC Region origin ASes announcing only one prefix: 20 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 2.9 Max AfriNIC Region AS path length visible: 8 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 21 Number of AfriNIC addresses announced to Internet: 2457088 Equivalent to 0 /8s, 37 /16s and 126 /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 667 2153 465 SINET-AS Research Organization of Informa 7497 465 212 24 CSTNET-AS-AP Computer Network Information 1237 199 72 154 KREONET-AS-KR KISTI, KR 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 4538 181 4191 71 ERX-CERNET-BKB China Education and Resear 7575 166 281 113 AARNET-AS-AP Australian Academic and Rese 55824 152 19 20 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 3354 4865 507 GOOGLE-CLOUD-PLATFORM - Google LLC, US 16509 2437 2161 1320 AMAZON-02 - Amazon.com, Inc., US 14618 1321 4906 998 AMAZON-AES - Amazon.com, Inc., US 15169 928 623 58 GOOGLE - Google LLC, US 5786 197 16 1 UPRENET - University of Puerto Rico, PR 376 196 146 150 RISQ-AS - Reseau dInformations Scientifiq 2920 173 34 7 LACOE - Los Angeles County Office of Educ 2152 145 491 95 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 786 210 1684 192 JANET Jisc Services Limited, GB 559 115 533 105 SWITCH Switch, Swiss Academic and Researc 1103 100 1759 85 SURFNET-NL SURFnet, The Netherlands, NL 8895 98 24 5 ISU Internet Services Unit ISU, SA 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 307 161 43 Rede Nacional de Ensino e Pesquisa, BR 11340 110 25 49 Red Universitaria Nacional, CL 3596 69 8 4 Universidad Autonoma Metropolitana, MX 271640 65 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 51 3 20 CEDIA, EC 1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 21612 27 16 1 FUNDACAO INSTITUTO OSWALDO CRUZ, BR 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 558 82 3 KENET-AS, KE 2018 373 318 69 TENET-1, ZA 2561 68 4 34 EUN, EG 8094 46 48 21 PUKNET, ZA 37215 45 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 327700 13 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 3354 4865 507 GOOGLE-CLOUD-PLATFORM - Google LLC, US 16509 2437 2161 1320 AMAZON-02 - Amazon.com, Inc., US 14618 1321 4906 998 AMAZON-AES - Amazon.com, Inc., US 15169 928 623 58 GOOGLE - Google LLC, US 2907 667 2153 465 SINET-AS Research Organization of Informa 36914 558 82 3 KENET-AS, KE 7497 465 212 24 CSTNET-AS-AP Computer Network Information 2018 373 318 69 TENET-1, ZA 1916 307 161 43 Rede Nacional de Ensino e Pesquisa, BR 680 291 1883 253 DFN Verein zur Foerderung eines Deutschen 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 2437 1117 AMAZON-02 - Amazon.com, Inc., US 15169 928 870 GOOGLE - Google LLC, US 36914 558 555 KENET-AS, KE 7497 465 441 CSTNET-AS-AP Computer Network Information Cente 14618 1321 323 AMAZON-AES - Amazon.com, Inc., US 2018 373 304 TENET-1, ZA 1916 307 264 Rede Nacional de Ensino e Pesquisa, BR 2907 667 202 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 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 208.64.40.0/24 Origin: 14618 AMAZON-AES - Amazon.com, Inc., US 208.64.40.0/24 Transit: 16509 AMAZON-02 - Amazon.com, Inc., US 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 /14:88 /15:171 /16:2076 /17:568 /18:565 /19:821 /20:2820 /21:1134 /22:1687 /23:1856 /24:14845 /25:64 /26:83 /27:44 /28:6 /29:4 /30:5 /31:0 /32:54 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 534 558 KENET-AS, KE 16509 433 2437 AMAZON-02 - Amazon.com, Inc., US 14618 380 1321 AMAZON-AES - Amazon.com, Inc., US 15169 282 928 GOOGLE - Google LLC, US 396982 278 3354 GOOGLE-CLOUD-PLATFORM - Google LLC, US 8895 95 98 ISU Internet Services Unit ISU, SA 1916 88 307 Rede Nacional de Ensino e Pesquisa, BR 2907 59 667 SINET-AS Research Organization of Information and Systems, National Institute of Informatics, JP 31638 48 48 ASN-LEPIDA, IT 37215 39 45 MAREN, MW Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:18 2:1 3:147 5:31 8:32 12:2 13:67 14:96 15:93 16:32 18:88 23:201 24:13 31:8 34:31 35:78 36:1 37:26 38:11 40:6 41:236 42:16 43:2 44:6 45:70 46:9 47:1 49:13 50:13 52:363 54:42 57:8 58:13 59:20 60:6 61:3 62:7 63:36 64:149 65:22 66:100 67:68 68:22 69:63 70:10 72:24 74:170 75:1 76:33 77:6 78:3 79:11 80:10 81:27 82:4 83:7 84:9 85:32 86:4 87:5 88:1 89:28 91:49 92:5 93:46 94:4 95:2 96:9 97:1 98:11 99:54 101:5 102:10 103:378 104:243 107:41 108:85 109:21 110:1 111:7 113:3 114:32 116:12 117:7 118:33 119:36 121:19 122:8 123:8 124:42 125:3 128:58 129:52 130:123 131:77 132:62 133:157 134:128 135:5 136:267 137:78 138:15 139:17 140:47 141:17 142:346 143:30 144:28 145:16 146:136 147:85 148:85 149:22 150:37 151:45 152:143 153:63 154:38 155:120 156:127 157:44 158:38 159:181 160:38 161:49 162:100 163:90 164:21 165:73 166:2 167:70 168:162 169:13 170:86 171:1 172:174 173:114 174:2 175:15 176:3 177:6 178:1 179:12 180:16 181:2 182:11 184:3 185:115 186:4 187:8 188:27 190:17 191:13 192:1655 193:329 194:117 195:101 196:149 197:346 198:536 199:353 200:316 201:6 202:624 203:437 204:426 205:159 206:229 207:262 208:136 209:174 210:232 211:15 212:145 213:16 216:226 217:26 218:21 219:7 220:16 222:4 223:17 End of report