IPv4 R&E Routing Table Report 22:15 GMT Mon 11 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: 27110 Prefixes after maximum aggregation (per Origin AS): 13479 Deaggregation factor: 2.01 Unique aggregates announced (without unneeded subnets): 15617 Number of IPv4 prefixes with a valid ROA: 16712 Number of IPv4 prefixes with an invalid ROA: 11 Number of IPv4 prefixes with no ROA: 10387 Total ASes present in the Internet Routing Table: 2741 Prefixes per ASN: 9.89 Origin-only ASes present in the Internet Routing Table: 2384 Origin ASes announcing only one prefix: 1058 Transit ASes present in the Internet Routing Table: 357 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: 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: 49723 Number of 32-bit ASNs visible in the Routing Table: 722 Prefixes from 32-bit ASNs in the Routing Table: 5480 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: 246641569 Equivalent to 14 /8s, 179 /16s and 115 /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: 3686 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 5039 Total APNIC prefixes after maximum aggregation: 2375 APNIC Deaggregation factor: 2.12 Prefixes being announced from the APNIC address blocks: 5137 Unique aggregates announced from the APNIC address blocks: 2725 APNIC Region origin ASes present in the Internet Routing Table: 611 APNIC Prefixes per ASN: 8.41 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: 4.5 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: 45711936 Equivalent to 2 /8s, 185 /16s and 130 /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: 16197 Total ARIN prefixes after maximum aggregation: 7726 ARIN Deaggregation factor: 2.10 Prefixes being announced from the ARIN address blocks: 15760 Unique aggregates announced from the ARIN address blocks: 8876 ARIN Region origin ASes present in the Internet Routing Table: 1304 ARIN Prefixes per ASN: 12.09 ARIN Region origin ASes announcing only one prefix: 460 ARIN Region transit ASes present in the Internet Routing Table: 156 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: 239 Number of ARIN addresses announced to Internet: 136912928 Equivalent to 8 /8s, 41 /16s and 32 /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: 3425 Total RIPE prefixes after maximum aggregation: 2740 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3745 Unique aggregates announced from the RIPE address blocks: 3151 RIPE Region origin ASes present in the Internet Routing Table: 600 RIPE Prefixes per ASN: 6.24 RIPE Region origin ASes announcing only one prefix: 268 RIPE Region transit ASes present in the Internet Routing Table: 102 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: 57627009 Equivalent to 3 /8s, 111 /16s and 81 /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: 1324 Total LACNIC prefixes after maximum aggregation: 479 LACNIC Deaggregation factor: 2.76 Prefixes being announced from the LACNIC address blocks: 1336 Unique aggregates announced from the LACNIC address blocks: 663 LACNIC Region origin ASes present in the Internet Routing Table: 125 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 50 LACNIC Region transit ASes present in the Internet Routing Table: 23 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: 55 Number of LACNIC addresses announced to Internet: 3955136 Equivalent to 0 /8s, 60 /16s and 89 /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: 1121 Total AfriNIC prefixes after maximum aggregation: 155 AfriNIC Deaggregation factor: 7.23 Prefixes being announced from the AfriNIC address blocks: 1126 Unique aggregates announced from the AfriNIC address blocks: 196 AfriNIC Region origin ASes present in the Internet Routing Table: 39 AfriNIC Prefixes per ASN: 28.87 AfriNIC Region origin ASes announcing only one prefix: 18 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 2.8 Max AfriNIC Region AS path length visible: 8 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 20 Number of AfriNIC addresses announced to Internet: 2432768 Equivalent to 0 /8s, 37 /16s and 31 /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 464 212 24 CSTNET-AS-AP Computer Network Information 1659 229 1466 35 ERX-TANET-ASN1 Taiwan Academic Network TA 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 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 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 3335 4865 504 GOOGLE-CLOUD-PLATFORM - Google LLC, US 16509 2409 2062 1305 AMAZON-02 - Amazon.com, Inc., US 14618 1305 4906 989 AMAZON-AES - Amazon.com, Inc., US 15169 923 623 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 146 491 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 1699 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 305 161 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 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 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 551 82 3 KENET-AS, KE 2018 373 318 69 TENET-1, ZA 8094 46 48 21 PUKNET, ZA 37215 45 8 1 MAREN, MW 30983 12 4 2 MARWAN-AS, MA 327700 12 16 1 MoRENet, MZ 37501 11 49 6 UOFS, ZA 37182 10 8 1 TERNET, TZ 36982 8 33 8 UCT, ZA 37654 8 1 6 RwEdNet-AS, RW 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 3335 4865 504 GOOGLE-CLOUD-PLATFORM - Google LLC, US 16509 2409 2062 1305 AMAZON-02 - Amazon.com, Inc., US 14618 1305 4906 989 AMAZON-AES - Amazon.com, Inc., US 15169 923 623 58 GOOGLE - Google LLC, US 2907 667 2153 465 SINET-AS Research Organization of Informa 36914 551 82 3 KENET-AS, KE 7497 464 212 24 CSTNET-AS-AP Computer Network Information 2018 373 318 69 TENET-1, ZA 1916 305 161 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 2409 1104 AMAZON-02 - Amazon.com, Inc., US 15169 923 865 GOOGLE - Google LLC, US 36914 551 548 KENET-AS, KE 7497 464 440 CSTNET-AS-AP Computer Network Information Cente 14618 1305 316 AMAZON-AES - Amazon.com, Inc., US 2018 373 304 TENET-1, ZA 1916 305 262 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 1659 229 194 ERX-TANET-ASN1 Taiwan Academic Network TANet In 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 /14:87 /15:166 /16:2081 /17:564 /18:569 /19:825 /20:2838 /21:1137 /22:1702 /23:1874 /24:14945 /25:61 /26:80 /27:45 /28:6 /29:4 /30:5 /31:0 /32:54 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 527 551 KENET-AS, KE 16509 429 2409 AMAZON-02 - Amazon.com, Inc., US 14618 378 1305 AMAZON-AES - Amazon.com, Inc., US 15169 282 923 GOOGLE - Google LLC, US 396982 278 3335 GOOGLE-CLOUD-PLATFORM - Google LLC, US 8895 95 98 ISU Internet Services Unit ISU, SA 1916 87 305 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) ---------------------------------------------- 1:17 2:1 3:148 5:30 8:28 12:2 13:64 14:96 15:92 16:25 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 45:68 46:9 47:1 49:13 50:13 52:363 54:42 57:8 58:14 59:20 60:6 61:3 62:7 63:36 64:155 65:22 66:100 67:68 68:21 69:62 70:10 72:24 74:169 75:1 76:33 77:6 78:3 79:10 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 99:52 101:5 102:9 103:386 104:246 107:42 108:85 109:20 110:1 111:7 113:3 114:32 116:12 117:7 118:33 119:27 121:19 122:8 123:8 124:42 125:3 128:58 129:51 130:123 131:77 132:63 133:157 134:128 135:5 136:269 137:78 138:15 139:17 140:99 141:17 142:346 143:32 144:26 145:16 146:136 147:85 148:246 149:22 150:37 151:46 152:140 153:62 154:37 155:119 156:127 157:45 158:38 159:180 160:38 161:49 162:100 163:94 164:21 165:73 166:2 167:63 168:162 169:13 170:86 171:1 172:174 173:115 174:2 175:15 176:3 177:6 178:1 179:12 180:16 181:2 182:11 184:3 185:113 186:4 187:8 188:27 190:17 191:13 192:1655 193:279 194:115 195:55 196:148 197:338 198:536 199:353 200:316 201:7 202:615 203:441 204:426 205:161 206:233 207:265 208:136 209:177 210:242 211:15 212:144 213:16 216:226 217:26 218:21 219:7 220:16 222:4 223:17 End of report