IPv4 R&E Routing Table Report 22:15 GMT Tue 27 Oct, 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: 27449 Prefixes after maximum aggregation (per Origin AS): 13814 Deaggregation factor: 1.99 Unique aggregates announced (without unneeded subnets): 16186 Number of IPv4 prefixes with a valid ROA: 18678 Number of IPv4 prefixes with an invalid ROA: 2 Number of IPv4 prefixes with no ROA: 8769 Total ASes present in the Internet Routing Table: 2707 Prefixes per ASN: 10.14 Origin-only ASes present in the Internet Routing Table: 2351 Origin ASes announcing only one prefix: 1078 Transit ASes present in the Internet Routing Table: 356 Transit-only ASes present in the Internet Routing Table: 59 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.5 Max AS path length visible: 46 Max AS path prepend of ASN ( 30075) 41 Prefixes from unregistered ASNs in the Routing Table: 2 Number of instances of unregistered ASNs: 2 Number of 32-bit ASNs allocated by the RIRs: 51888 Number of 32-bit ASNs visible in the Routing Table: 698 Prefixes from 32-bit ASNs in the Routing Table: 5507 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: 8 Number of addresses announced to Internet: 251222944 Equivalent to 14 /8s, 249 /16s and 91 /24s Percentage of available address space announced: 6.8 Percentage of allocated address space announced: 6.8 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: 3852 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4438 Total APNIC prefixes after maximum aggregation: 2167 APNIC Deaggregation factor: 2.05 Prefixes being announced from the APNIC address blocks: 4541 Unique aggregates announced from the APNIC address blocks: 2550 APNIC Region origin ASes present in the Internet Routing Table: 528 APNIC Prefixes per ASN: 8.60 APNIC Region origin ASes announcing only one prefix: 234 APNIC Region transit ASes present in the Internet Routing Table: 47 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 27 Number of APNIC region 32-bit ASNs visible in the Routing Table: 200 Number of APNIC addresses announced to Internet: 45343552 Equivalent to 2 /8s, 179 /16s and 227 /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: 17218 Total ARIN prefixes after maximum aggregation: 8314 ARIN Deaggregation factor: 2.07 Prefixes being announced from the ARIN address blocks: 16678 Unique aggregates announced from the ARIN address blocks: 9611 ARIN Region origin ASes present in the Internet Routing Table: 1336 ARIN Prefixes per ASN: 12.48 ARIN Region origin ASes announcing only one prefix: 488 ARIN Region transit ASes present in the Internet Routing Table: 161 Average ARIN Region AS path length visible: 3.3 Max ARIN Region AS path length visible: 46 Number of ARIN region 32-bit ASNs visible in the Routing Table: 250 Number of ARIN addresses announced to Internet: 142195200 Equivalent to 8 /8s, 121 /16s and 186 /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: 3452 Total RIPE prefixes after maximum aggregation: 2736 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3862 Unique aggregates announced from the RIPE address blocks: 3218 RIPE Region origin ASes present in the Internet Routing Table: 612 RIPE Prefixes per ASN: 6.31 RIPE Region origin ASes announcing only one prefix: 282 RIPE Region transit ASes present in the Internet Routing Table: 100 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: 168 Number of RIPE addresses announced to Internet: 57468800 Equivalent to 3 /8s, 108 /16s and 231 /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 196608-219547 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: 1099 Total LACNIC prefixes after maximum aggregation: 402 LACNIC Deaggregation factor: 2.73 Prefixes being announced from the LACNIC address blocks: 1111 Unique aggregates announced from the LACNIC address blocks: 501 LACNIC Region origin ASes present in the Internet Routing Table: 124 LACNIC Prefixes per ASN: 8.96 LACNIC Region origin ASes announcing only one prefix: 51 LACNIC Region transit ASes present in the Internet Routing Table: 20 Average LACNIC Region AS path length visible: 2.9 Max LACNIC Region AS path length visible: 8 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 59 Number of LACNIC addresses announced to Internet: 3729632 Equivalent to 0 /8s, 56 /16s and 232 /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: 1240 Total AfriNIC prefixes after maximum aggregation: 193 AfriNIC Deaggregation factor: 6.42 Prefixes being announced from the AfriNIC address blocks: 1249 Unique aggregates announced from the AfriNIC address blocks: 298 AfriNIC Region origin ASes present in the Internet Routing Table: 46 AfriNIC Prefixes per ASN: 27.15 AfriNIC Region origin ASes announcing only one prefix: 23 AfriNIC Region transit ASes present in the Internet Routing Table: 13 Average AfriNIC Region AS path length visible: 2.9 Max AfriNIC Region AS path length visible: 7 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 21 Number of AfriNIC addresses announced to Internet: 2481408 Equivalent to 0 /8s, 37 /16s and 221 /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 665 2152 465 SINET-AS Research Organization of Informa 7497 468 212 24 CSTNET-AS-AP Computer Network Information 1237 200 72 155 KREONET-AS-KR KISTI, KR 58647 185 18 2 KAGAWAU-AS Kagawa University, JP 7575 168 281 115 AARNET-AS-AP Australian Academic and Rese 55824 151 19 20 NKN-CORE-NW NKN Core Network, IN 4538 133 4191 71 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 1659 71 1466 35 ERX-TANET-ASN1 Taiwan Academic Network TA 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 3555 5382 604 GOOGLE-CLOUD-PLATFORM - Google LLC, US 16509 2933 2344 1628 AMAZON-02 - Amazon.com, Inc., US 14618 1519 5311 1085 AMAZON-AES - Amazon.com, Inc., US 15169 958 639 60 GOOGLE - Google LLC, US 376 196 146 148 RISQ-AS - Reseau dInformations Scientifiq 5786 196 16 1 UPRENET - University of Puerto Rico, PR 2920 172 34 7 LACOE - Los Angeles County Office of Educ 2152 148 491 97 CENIC-2152 - CENIC, US 18558 138 18 4 NETBLK-RCOEK - Riverside County Office of 81 122 439 41 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 680 299 1885 258 DFN Verein zur Foerderung eines Deutschen 786 208 1681 188 JANET Jisc Services Limited, GB 559 117 533 106 SWITCH Switch, Swiss Academic and Researc 1103 99 1758 84 SURFNET-NL SURFnet, The Netherlands, NL 8895 98 24 5 ISU Internet Services Unit ISU, SA 2614 87 26 67 ROEDUNET, RO 137 83 677 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 63 622 58 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 309 161 44 Rede Nacional de Ensino e Pesquisa, BR 11340 110 25 49 Red Universitaria Nacional, CL 271640 62 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 60 84 40 Fundacao Carlos Chagas Filho de Amparo a 19611 53 17 2 Associacao Antonio Vieira - Unisinos, BR 61468 53 3 22 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, 52888 18 7 8 UNIVERSIDADE FEDERAL DE SAO CARLOS, 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 556 82 3 KENET-AS, KE 2018 375 318 69 TENET-1, ZA 2561 68 4 34 EUN, EG 8094 51 48 11 PUKNET, ZA 37215 47 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 327700 17 16 1 MoRENet, MZ 30983 12 4 2 MARWAN-AS, MA 37501 11 49 6 UOFS, ZA 37654 10 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 3555 5382 604 GOOGLE-CLOUD-PLATFORM - Google LLC, US 16509 2933 2344 1628 AMAZON-02 - Amazon.com, Inc., US 14618 1519 5311 1085 AMAZON-AES - Amazon.com, Inc., US 15169 958 639 60 GOOGLE - Google LLC, US 2907 665 2152 465 SINET-AS Research Organization of Informa 36914 556 82 3 KENET-AS, KE 7497 468 212 24 CSTNET-AS-AP Computer Network Information 2018 375 318 69 TENET-1, ZA 1916 309 161 44 Rede Nacional de Ensino e Pesquisa, BR 680 299 1885 258 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 2933 1305 AMAZON-02 - Amazon.com, Inc., US 15169 958 898 GOOGLE - Google LLC, US 36914 556 553 KENET-AS, KE 7497 468 444 CSTNET-AS-AP Computer Network Information Cente 14618 1519 434 AMAZON-AES - Amazon.com, Inc., US 2018 375 306 TENET-1, ZA 1916 309 265 Rede Nacional de Ensino e Pesquisa, BR 2907 665 200 SINET-AS Research Organization of Information a 5786 196 195 UPRENET - University of Puerto Rico, PR 58647 185 183 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 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 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 199.175.42.0/24 Origin: 14618 AMAZON-AES - Amazon.com, Inc., US 199.175.42.0/24 Transit: 16509 AMAZON-02 - Amazon.com, Inc., US 199.233.182.0/24 Origin: 3734 SCCO - Santa Clara County Office of Educ 199.233.182.0/24 Transit: 2152 CENIC-2152 - CENIC, 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 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 /12:22 /13:42 /14:94 /15:183 /16:2101 /17:591 /18:580 /19:801 /20:2826 /21:1127 /22:1736 /23:1883 /24:15198 /25:61 /26:83 /27:46 /28:4 /29:4 /30:5 /31:1 /32:54 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 534 556 KENET-AS, KE 16509 527 2933 AMAZON-02 - Amazon.com, Inc., US 14618 400 1519 AMAZON-AES - Amazon.com, Inc., US 396982 306 3555 GOOGLE-CLOUD-PLATFORM - Google LLC, US 15169 284 958 GOOGLE - Google LLC, US 8895 95 98 ISU Internet Services Unit ISU, SA 1916 90 309 Rede Nacional de Ensino e Pesquisa, BR 2907 59 665 SINET-AS Research Organization of Information and Systems, National Institute of Informatics, JP 31638 50 50 ASN-LEPIDA, IT 37215 41 47 MAREN, MW Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:19 2:1 3:202 5:34 8:34 12:1 13:99 14:93 15:160 16:116 18:153 23:211 24:13 31:12 34:33 35:90 36:1 37:26 38:13 40:7 41:235 42:8 43:2 44:8 45:85 46:10 47:1 49:12 50:13 52:393 54:67 57:9 59:18 60:6 61:3 62:8 63:54 64:164 65:23 66:109 67:68 68:22 69:64 70:5 71:2 72:25 74:156 75:8 76:31 77:6 78:4 79:12 80:12 81:26 82:4 83:7 84:9 85:33 86:4 87:7 88:1 89:27 91:43 92:5 93:49 94:9 95:4 96:9 97:1 98:13 99:65 101:2 102:10 103:279 104:192 107:46 108:121 109:21 110:1 111:3 113:2 114:29 116:12 117:7 118:35 119:37 121:4 122:8 123:6 124:41 125:1 126:1 128:57 129:61 130:142 131:79 132:59 133:160 134:135 135:5 136:258 137:77 138:17 139:17 140:46 141:19 142:349 143:37 144:24 145:16 146:136 147:87 148:24 149:21 150:44 151:49 152:148 153:88 154:46 155:150 156:130 157:43 158:43 159:204 160:39 161:48 162:110 163:114 164:33 165:79 166:2 167:72 168:162 169:14 170:89 171:1 172:169 173:123 174:3 175:5 176:3 177:9 178:5 179:12 180:12 181:2 182:2 184:4 185:125 186:5 187:9 188:25 190:25 191:14 192:1700 193:331 194:111 195:103 196:148 197:347 198:527 199:363 200:311 201:7 202:566 203:396 204:399 205:162 206:239 207:270 208:138 209:168 210:217 211:15 212:145 213:18 216:211 217:26 218:21 219:6 220:14 222:2 223:16 End of report