IPv4 R&E Routing Table Report 22:15 GMT Tue 23 Dec, 2025 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: 26558 Prefixes after maximum aggregation (per Origin AS): 13208 Deaggregation factor: 2.01 Unique aggregates announced (without unneeded subnets): 15256 Number of IPv4 prefixes with a valid ROA: 16135 Number of IPv4 prefixes with an invalid ROA: 14 Number of IPv4 prefixes with no ROA: 10409 Total ASes present in the Internet Routing Table: 2774 Prefixes per ASN: 9.57 Origin-only ASes present in the Internet Routing Table: 2408 Origin ASes announcing only one prefix: 1091 Transit ASes present in the Internet Routing Table: 366 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: 15 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: 48278 Number of 32-bit ASNs visible in the Routing Table: 738 Prefixes from 32-bit ASNs in the Routing Table: 5472 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: 10 Number of addresses announced to Internet: 246096785 Equivalent to 14 /8s, 171 /16s and 35 /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: 3649 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4779 Total APNIC prefixes after maximum aggregation: 2333 APNIC Deaggregation factor: 2.05 Prefixes being announced from the APNIC address blocks: 4869 Unique aggregates announced from the APNIC address blocks: 2687 APNIC Region origin ASes present in the Internet Routing Table: 610 APNIC Prefixes per ASN: 7.98 APNIC Region origin ASes announcing only one prefix: 256 APNIC Region transit ASes present in the Internet Routing Table: 53 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: 45426752 Equivalent to 2 /8s, 181 /16s and 40 /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: 15752 Total ARIN prefixes after maximum aggregation: 7445 ARIN Deaggregation factor: 2.12 Prefixes being announced from the ARIN address blocks: 15369 Unique aggregates announced from the ARIN address blocks: 8469 ARIN Region origin ASes present in the Internet Routing Table: 1302 ARIN Prefixes per ASN: 11.80 ARIN Region origin ASes announcing only one prefix: 470 ARIN Region transit ASes present in the Internet Routing Table: 158 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: 234 Number of ARIN addresses announced to Internet: 136229216 Equivalent to 8 /8s, 30 /16s and 177 /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: 3432 Total RIPE prefixes after maximum aggregation: 2722 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3714 Unique aggregates announced from the RIPE address blocks: 3112 RIPE Region origin ASes present in the Internet Routing Table: 609 RIPE Prefixes per ASN: 6.10 RIPE Region origin ASes announcing only one prefix: 278 RIPE Region transit ASes present in the Internet Routing Table: 105 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: 57885585 Equivalent to 3 /8s, 115 /16s and 67 /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: 1356 Total LACNIC prefixes after maximum aggregation: 491 LACNIC Deaggregation factor: 2.76 Prefixes being announced from the LACNIC address blocks: 1367 Unique aggregates announced from the LACNIC address blocks: 672 LACNIC Region origin ASes present in the Internet Routing Table: 134 LACNIC Prefixes per ASN: 10.20 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: 61 Number of LACNIC addresses announced to Internet: 4035168 Equivalent to 0 /8s, 61 /16s and 146 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 1227 Total AfriNIC prefixes after maximum aggregation: 213 AfriNIC Deaggregation factor: 5.76 Prefixes being announced from the AfriNIC address blocks: 1229 Unique aggregates announced from the AfriNIC address blocks: 306 AfriNIC Region origin ASes present in the Internet Routing Table: 56 AfriNIC Prefixes per ASN: 21.95 AfriNIC Region origin ASes announcing only one prefix: 29 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 2.9 Max AfriNIC Region AS path length visible: 9 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 34 Number of AfriNIC addresses announced to Internet: 2515456 Equivalent to 0 /8s, 38 /16s and 98 /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 453 180 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 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 16509 2287 1987 1235 AMAZON-02, US 14618 1181 4746 910 AMAZON-AES, US 15169 821 183 41 GOOGLE, US 376 200 162 150 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 2920 176 34 7 LACOE, US 2152 148 491 97 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 102 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 77 88 72 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 291 177 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 563 82 3 KENET-AS, KE 2018 356 318 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 37501 11 49 6 UOFS, ZA 327700 11 16 1 MoRENet, MZ 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 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 16509 2287 1987 1235 AMAZON-02, US 14618 1181 4746 910 AMAZON-AES, US 15169 821 183 41 GOOGLE, US 2907 611 2169 463 SINET-AS Research Organization of Informa 36914 563 82 3 KENET-AS, KE 7497 453 180 23 CSTNET-AS-AP Computer Network Information 2018 356 318 69 TENET-1, ZA 1916 291 177 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 2287 1052 AMAZON-02, US 15169 821 780 GOOGLE, US 36914 563 560 KENET-AS, KE 7497 453 430 CSTNET-AS-AP Computer Network Information Cente 2018 356 287 TENET-1, ZA 14618 1181 271 AMAZON-AES, US 1916 291 247 Rede Nacional de Ensino e Pesquisa, BR 5786 197 196 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 192.225.212.0/24 Origin: 14618 AMAZON-AES, US 192.225.212.0/24 Transit: 16509 AMAZON-02, US 192.225.223.0/24 Origin: 14618 AMAZON-AES, US 192.225.223.0/24 Transit: 16509 AMAZON-02, 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 /13:38 /14:85 /15:165 /16:2091 /17:548 /18:543 /19:801 /20:2816 /21:1111 /22:1640 /23:1804 /24:14681 /25:60 /26:82 /27:45 /28:6 /29:4 /30:5 /31:1 /32:4 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 539 563 KENET-AS, KE 16509 408 2287 AMAZON-02, US 14618 358 1181 AMAZON-AES, US 396982 306 3318 GOOGLE-CLOUD-PLATFORM, US 15169 267 821 GOOGLE, US 8895 99 102 ISU Internet Services Unit ISU, SA 1916 86 291 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) ---------------------------------------------- 1:7 2:1 3:135 5:27 8:28 12:2 13:57 14:95 15:81 16:111 18:88 23:119 24:5 31:6 34:25 35:77 36:1 37:26 38:12 40:5 41:229 42:17 43:2 44:6 45:68 46:9 47:1 49:13 50:13 52:349 54:42 57:6 58:14 59:20 60:6 61:3 62:7 63:36 64:151 65:23 66:100 67:67 68:20 69:56 70:23 71:2 72:22 74:164 75:1 76:32 77:9 78:3 79:13 80:10 81:27 82:3 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 99:53 101:3 102:13 103:392 104:253 107:40 108:108 109:16 110:1 111:7 113:3 114:29 116:11 117:7 118:33 119:30 121:18 122:8 123:8 124:42 125:5 128:57 129:48 130:127 131:71 132:64 133:158 134:121 135:4 136:305 137:77 138:14 139:17 140:44 141:12 142:344 143:32 144:21 145:14 146:138 147:82 148:244 149:18 150:37 151:43 152:139 153:56 154:40 155:114 156:131 157:41 158:37 159:182 160:36 161:47 162:96 163:86 164:21 165:68 166:3 167:42 168:142 169:12 170:88 171:1 172:150 173:110 174:2 175:15 176:3 177:5 178:1 179:12 180:16 181:2 182:11 184:3 185:105 186:4 187:24 188:25 190:17 191:13 192:1604 193:325 194:108 195:98 196:149 197:348 198:507 199:336 200:307 201:23 202:602 203:447 204:418 205:152 206:229 207:265 208:120 209:186 210:225 211:3 212:148 213:16 216:220 217:25 218:20 219:6 220:16 222:4 223:17 End of report