IPv4 R&E Routing Table Report 22:15 GMT Mon 06 Apr, 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: 26377 Prefixes after maximum aggregation (per Origin AS): 13364 Deaggregation factor: 1.97 Unique aggregates announced (without unneeded subnets): 15442 Number of IPv4 prefixes with a valid ROA: 16263 Number of IPv4 prefixes with an invalid ROA: 13 Number of IPv4 prefixes with no ROA: 10101 Total ASes present in the Internet Routing Table: 2708 Prefixes per ASN: 9.74 Origin-only ASes present in the Internet Routing Table: 2345 Origin ASes announcing only one prefix: 1052 Transit ASes present in the Internet Routing Table: 363 Transit-only ASes present in the Internet Routing Table: 61 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: 15 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: 49225 Number of 32-bit ASNs visible in the Routing Table: 703 Prefixes from 32-bit ASNs in the Routing Table: 5349 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: 246395681 Equivalent to 14 /8s, 175 /16s and 179 /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: 3698 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4439 Total APNIC prefixes after maximum aggregation: 2269 APNIC Deaggregation factor: 1.96 Prefixes being announced from the APNIC address blocks: 4536 Unique aggregates announced from the APNIC address blocks: 2617 APNIC Region origin ASes present in the Internet Routing Table: 562 APNIC Prefixes per ASN: 8.07 APNIC Region origin ASes announcing only one prefix: 246 APNIC Region transit ASes present in the Internet Routing Table: 50 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 11 Number of APNIC region 32-bit ASNs visible in the Routing Table: 237 Number of APNIC addresses announced to Internet: 45149760 Equivalent to 2 /8s, 176 /16s and 238 /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: 15981 Total ARIN prefixes after maximum aggregation: 7666 ARIN Deaggregation factor: 2.08 Prefixes being announced from the ARIN address blocks: 15553 Unique aggregates announced from the ARIN address blocks: 8705 ARIN Region origin ASes present in the Internet Routing Table: 1305 ARIN Prefixes per ASN: 11.92 ARIN Region origin ASes announcing only one prefix: 460 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: 236 Number of ARIN addresses announced to Internet: 137028384 Equivalent to 8 /8s, 42 /16s and 227 /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: 3441 Total RIPE prefixes after maximum aggregation: 2745 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3747 Unique aggregates announced from the RIPE address blocks: 3154 RIPE Region origin ASes present in the Internet Routing Table: 606 RIPE Prefixes per ASN: 6.18 RIPE Region origin ASes announcing only one prefix: 270 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: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 154 Number of RIPE addresses announced to Internet: 57800193 Equivalent to 3 /8s, 113 /16s and 246 /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: 1299 Total LACNIC prefixes after maximum aggregation: 481 LACNIC Deaggregation factor: 2.70 Prefixes being announced from the LACNIC address blocks: 1312 Unique aggregates announced from the LACNIC address blocks: 667 LACNIC Region origin ASes present in the Internet Routing Table: 130 LACNIC Prefixes per ASN: 10.09 LACNIC Region origin ASes announcing only one prefix: 58 LACNIC Region transit ASes present in the Internet Routing Table: 28 Average LACNIC Region AS path length visible: 3.9 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: 3961280 Equivalent to 0 /8s, 60 /16s and 113 /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: 1213 Total AfriNIC prefixes after maximum aggregation: 199 AfriNIC Deaggregation factor: 6.10 Prefixes being announced from the AfriNIC address blocks: 1223 Unique aggregates announced from the AfriNIC address blocks: 293 AfriNIC Region origin ASes present in the Internet Routing Table: 40 AfriNIC Prefixes per ASN: 30.57 AfriNIC Region origin ASes announcing only one prefix: 18 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: 17 Number of AfriNIC addresses announced to Internet: 2452480 Equivalent to 0 /8s, 37 /16s and 108 /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 454 180 23 CSTNET-AS-AP Computer Network Information 1237 199 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 154 19 21 NKN-CORE-NW NKN Core Network, IN 6262 63 134 56 CSIRO Commonwealth Scientific and Industr 1659 61 1466 35 ERX-TANET-ASN1 Taiwan Academic Network TA 9317 50 16 1 ITISNET-AS INHA UNIVERSITY, KR 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 3300 4857 491 GOOGLE-CLOUD-PLATFORM - Google LLC, US 16509 2276 2051 1281 AMAZON-02 - Amazon.com, Inc., US 14618 1279 4902 976 AMAZON-AES - Amazon.com, Inc., US 15169 912 623 58 GOOGLE - Google LLC, US 376 197 162 151 RISQ-AS - Reseau dInformations Scientifiq 5786 197 16 1 UPRENET - University of Puerto Rico, PR 2920 172 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 786 210 1731 188 JANET Jisc Services Limited, GB 559 115 533 105 SWITCH Switch, Swiss Academic and Researc 8895 102 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 291 161 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 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 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 545 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 30983 12 4 2 MARWAN-AS, MA 37501 11 49 6 UOFS, ZA 327700 11 16 1 MoRENet, MZ 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 3300 4857 491 GOOGLE-CLOUD-PLATFORM - Google LLC, US 16509 2276 2051 1281 AMAZON-02 - Amazon.com, Inc., US 14618 1279 4902 976 AMAZON-AES - Amazon.com, Inc., US 15169 912 623 58 GOOGLE - Google LLC, US 2907 667 2153 465 SINET-AS Research Organization of Informa 36914 545 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 291 161 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 2276 995 AMAZON-02 - Amazon.com, Inc., US 15169 912 854 GOOGLE - Google LLC, US 36914 545 542 KENET-AS, KE 7497 454 431 CSTNET-AS-AP Computer Network Information Cente 2018 374 305 TENET-1, ZA 14618 1279 303 AMAZON-AES - Amazon.com, Inc., US 1916 291 248 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 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 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 /14:87 /15:164 /16:2082 /17:559 /18:551 /19:814 /20:2792 /21:1105 /22:1652 /23:1822 /24:14418 /25:65 /26:82 /27:48 /28:6 /29:4 /30:5 /31:0 /32:54 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 521 545 KENET-AS, KE 16509 426 2276 AMAZON-02 - Amazon.com, Inc., US 14618 385 1279 AMAZON-AES - Amazon.com, Inc., US 396982 284 3300 GOOGLE-CLOUD-PLATFORM - Google LLC, US 15169 279 912 GOOGLE - Google LLC, US 8895 99 102 ISU Internet Services Unit ISU, SA 1916 87 291 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 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 3:135 5:30 8:28 12:2 13:66 14:96 15:91 16:15 18:88 23:121 24:13 31:8 34:31 35:76 36:1 37:26 38:12 40:5 41:237 42:16 43:2 44:6 45:64 46:9 47:1 49:13 50:14 52:362 54:42 57:6 58:14 59:20 60:6 61:3 62:7 63:36 64:155 65:21 66:100 67:69 68:21 69:61 70:10 72:24 74:168 75:1 76:33 77:6 78:3 79:9 80:10 81:27 82:5 83:7 84:9 85:32 86:4 87:5 88:1 89:28 91:52 92:5 93:46 94:4 95:2 96:9 97:1 98:11 99:52 101:5 102:8 103:366 104:245 107:43 108:83 109:18 110:1 111:7 113:3 114:32 116:11 117:7 118:33 119:23 121:18 122:8 123:8 124:42 125:3 128:58 129:53 130:124 131:74 132:64 133:157 134:128 135:5 136:270 137:78 138:14 139:17 140:47 141:13 142:345 143:32 144:25 145:7 146:136 147:82 148:245 149:21 150:37 151:44 152:139 153:61 154:42 155:118 156:126 157:45 158:38 159:178 160:38 161:44 162:99 163:89 164:22 165:73 166:3 167:55 168:162 169:14 170:87 171:1 172:174 173:118 174:2 175:15 176:3 177:7 178:1 179:12 180:16 181:2 182:9 184:3 185:115 186:4 187:8 188:27 190:17 191:13 192:1632 193:332 194:114 195:101 196:149 197:334 198:523 199:349 200:300 201:8 202:421 203:319 204:421 205:157 206:230 207:264 208:135 209:178 210:232 211:15 212:147 213:16 216:225 217:26 218:21 219:7 220:16 222:4 223:17 End of report