IPv4 R&E Routing Table Report 22:15 GMT Tue 06 Jan, 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: 26592 Prefixes after maximum aggregation (per Origin AS): 13216 Deaggregation factor: 2.01 Unique aggregates announced (without unneeded subnets): 15287 Number of IPv4 prefixes with a valid ROA: 16200 Number of IPv4 prefixes with an invalid ROA: 16 Number of IPv4 prefixes with no ROA: 10376 Total ASes present in the Internet Routing Table: 2776 Prefixes per ASN: 9.58 Origin-only ASes present in the Internet Routing Table: 2407 Origin ASes announcing only one prefix: 1091 Transit ASes present in the Internet Routing Table: 369 Transit-only ASes present in the Internet Routing Table: 59 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: 16 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 12 Number of instances of unregistered ASNs: 12 Number of 32-bit ASNs allocated by the RIRs: 48321 Number of 32-bit ASNs visible in the Routing Table: 735 Prefixes from 32-bit ASNs in the Routing Table: 5469 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: 7 Number of addresses announced to Internet: 246144657 Equivalent to 14 /8s, 171 /16s and 222 /24s Percentage of available address space announced: 6.6 Percentage of allocated address space announced: 6.6 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: 3669 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4785 Total APNIC prefixes after maximum aggregation: 2330 APNIC Deaggregation factor: 2.05 Prefixes being announced from the APNIC address blocks: 4877 Unique aggregates announced from the APNIC address blocks: 2689 APNIC Region origin ASes present in the Internet Routing Table: 610 APNIC Prefixes per ASN: 8.00 APNIC Region origin ASes announcing only one prefix: 257 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: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 255 Number of APNIC addresses announced to Internet: 45526080 Equivalent to 2 /8s, 182 /16s and 172 /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: 15779 Total ARIN prefixes after maximum aggregation: 7451 ARIN Deaggregation factor: 2.12 Prefixes being announced from the ARIN address blocks: 15389 Unique aggregates announced from the ARIN address blocks: 8487 ARIN Region origin ASes present in the Internet Routing Table: 1303 ARIN Prefixes per ASN: 11.81 ARIN Region origin ASes announcing only one prefix: 470 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: 233 Number of ARIN addresses announced to Internet: 136175456 Equivalent to 8 /8s, 29 /16s and 223 /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, 393216-402332 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: 3446 Total RIPE prefixes after maximum aggregation: 2731 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3735 Unique aggregates announced from the RIPE address blocks: 3129 RIPE Region origin ASes present in the Internet Routing Table: 613 RIPE Prefixes per ASN: 6.09 RIPE Region origin ASes announcing only one prefix: 279 RIPE Region transit ASes present in the Internet Routing Table: 107 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: 57890961 Equivalent to 3 /8s, 115 /16s and 88 /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: 1352 Total LACNIC prefixes after maximum aggregation: 490 LACNIC Deaggregation factor: 2.76 Prefixes being announced from the LACNIC address blocks: 1363 Unique aggregates announced from the LACNIC address blocks: 671 LACNIC Region origin ASes present in the Internet Routing Table: 133 LACNIC Prefixes per ASN: 10.25 LACNIC Region origin ASes announcing only one prefix: 58 LACNIC Region transit ASes present in the Internet Routing Table: 25 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: 4034144 Equivalent to 0 /8s, 61 /16s and 142 /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: 1218 Total AfriNIC prefixes after maximum aggregation: 210 AfriNIC Deaggregation factor: 5.80 Prefixes being announced from the AfriNIC address blocks: 1221 Unique aggregates announced from the AfriNIC address blocks: 304 AfriNIC Region origin ASes present in the Internet Routing Table: 54 AfriNIC Prefixes per ASN: 22.61 AfriNIC Region origin ASes announcing only one prefix: 27 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 3.0 Max AfriNIC Region AS path length visible: 16 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 32 Number of AfriNIC addresses announced to Internet: 2514176 Equivalent to 0 /8s, 38 /16s and 93 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & 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 611 2169 463 SINET-AS Research Organization of Informa 7497 454 180 23 CSTNET-AS-AP Computer Network Information 1237 199 72 153 KREONET-AS-KR KISTI, KR 4538 185 4192 72 ERX-CERNET-BKB China Education and Resear 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 164 281 111 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 3322 4867 494 GOOGLE-CLOUD-PLATFORM, US 16509 2313 1987 1258 AMAZON-02, US 14618 1204 4748 921 AMAZON-AES, US 15169 822 183 41 GOOGLE, US 376 200 162 150 RISQ-AS, CA 5786 196 16 1 UPRENET, PR 2920 176 34 7 LACOE, US 2152 147 491 96 CENIC-2152, US 18558 140 18 4 NETBLK-RCOEK, US 36492 120 8 37 GOOGLEWIFI, 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 680 285 1883 251 DFN Verein zur Foerderung eines Deutschen 786 209 1738 187 JANET Jisc Services Limited, GB 559 115 533 105 SWITCH Switch, Swiss Academic and Researc 8895 105 24 5 ISU Internet Services Unit ISU, SA 1103 100 1759 85 SURFNET-NL SURFnet, The Netherlands, NL 2614 88 26 68 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 65 630 60 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 292 177 44 Rede Nacional de Ensino e Pesquisa, BR 28391 160 10 72 Universidad Juarez Autonoma de Tabasco, M 11340 111 25 50 Red Universitaria Nacional, CL 3596 69 8 4 Universidad Autonoma Metropolitana, MX 271640 68 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 42 35 27 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 28614 38 2 2 Fundacao Universidade Regional de Blumena 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 357 318 69 TENET-1, ZA 2561 68 4 34 EUN, EG 8094 47 48 18 PUKNET, ZA 37215 44 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 30983 12 4 2 MARWAN-AS, MA 327700 12 16 1 MoRENet, MZ 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 3322 4867 494 GOOGLE-CLOUD-PLATFORM, US 16509 2313 1987 1258 AMAZON-02, US 14618 1204 4748 921 AMAZON-AES, US 15169 822 183 41 GOOGLE, US 2907 611 2169 463 SINET-AS Research Organization of Informa 36914 553 82 3 KENET-AS, KE 7497 454 180 23 CSTNET-AS-AP Computer Network Information 2018 357 318 69 TENET-1, ZA 1916 292 177 44 Rede Nacional de Ensino e Pesquisa, BR 680 285 1883 251 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 2313 1055 AMAZON-02, US 15169 822 781 GOOGLE, US 36914 553 550 KENET-AS, KE 7497 454 431 CSTNET-AS-AP Computer Network Information Cente 2018 357 288 TENET-1, ZA 14618 1204 283 AMAZON-AES, US 1916 292 248 Rede Nacional de Ensino e Pesquisa, BR 5786 196 195 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 2920 176 169 LACOE, US 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, US 64011 UNALLOCATED 130.215.0.0/16 10326 WPI, US 64510 DOCUMENT 185.48.234.168/32 200999 PL-CLOUDFERRO, PL 396334 UNALLOCATED 205.143.136.0/21 5078 ONENET-AS-1, US 396334 UNALLOCATED 205.143.136.0/24 5078 ONENET-AS-1, US 396334 UNALLOCATED 205.143.137.0/24 5078 ONENET-AS-1, US 396334 UNALLOCATED 205.143.138.0/24 5078 ONENET-AS-1, US 396334 UNALLOCATED 205.143.139.0/24 5078 ONENET-AS-1, US 396334 UNALLOCATED 205.143.140.0/24 5078 ONENET-AS-1, US 396334 UNALLOCATED 205.143.141.0/24 5078 ONENET-AS-1, US 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, US 103.177.50.0/23 Transit: 15169 GOOGLE, US 113.212.76.0/24 Origin: 396982 GOOGLE-CLOUD-PLATFORM, US 113.212.76.0/24 Transit: 15169 GOOGLE, 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 /13:38 /14:85 /15:165 /16:2090 /17:550 /18:544 /19:805 /20:2816 /21:1108 /22:1634 /23:1797 /24:14724 /25:60 /26:81 /27:47 /28:6 /29:4 /30:5 /31:1 /32:4 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 529 553 KENET-AS, KE 16509 411 2313 AMAZON-02, US 14618 362 1204 AMAZON-AES, US 396982 307 3322 GOOGLE-CLOUD-PLATFORM, US 15169 268 822 GOOGLE, US 8895 102 105 ISU Internet Services Unit ISU, SA 1916 87 292 Rede Nacional de Ensino e Pesquisa, BR 31638 48 48 ASN-LEPIDA, IT 37215 38 44 MAREN, MW 200521 33 58 SEAP-AGE, ES Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:8 2:1 3:135 5:28 8:28 12:2 13:71 14:95 15:81 16:111 18:88 23:119 24:4 31:6 34:25 35:77 36:1 37:26 38:12 40:5 41:225 42:18 43:2 44:6 45:75 46:9 47:1 49:13 50:12 52:349 54:42 57:6 58:14 59:20 60:6 61:3 62:7 63:36 64:150 65:23 66:101 67:68 68:20 69:59 70:24 71:2 72:22 74:164 75:1 76:32 77:9 78:3 79:13 80:10 81:27 82:5 83:6 84:5 85:33 86:4 87:5 88:1 89:27 91:51 92:5 93:46 94:4 95:2 96:9 97:1 98:11 99:53 101:3 102:12 103:390 104:255 107:40 108:107 109:17 110:1 111:7 113:3 114:32 116:11 117:7 118:33 119:31 121:18 122:8 123:8 124:42 125:5 128:57 129:48 130:129 131:67 132:63 133:157 134:124 135:4 136:304 137:77 138:14 139:17 140:44 141:12 142:344 143:31 144:22 145:14 146:138 147:57 148:244 149:18 150:37 151:43 152:139 153:60 154:40 155:115 156:130 157:41 158:37 159:183 160:36 161:47 162:96 163:86 164:21 165:68 166:3 167:43 168:142 169:12 170:88 171:1 172:150 173:111 174:2 175:15 176:3 177:5 178:1 179:12 180:16 181:2 182:11 184:17 185:106 186:4 187:24 188:25 190:17 191:13 192:1617 193:327 194:108 195:100 196:150 197:343 198:508 199:339 200:307 201:23 202:603 203:448 204:416 205:153 206:229 207:265 208:122 209:186 210:223 211:3 212:151 213:16 216:219 217:25 218:20 219:6 220:16 222:4 223:17 End of report