IPv4 R&E Routing Table Report 22:15 GMT Fri 10 Oct, 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: 23708 Prefixes after maximum aggregation (per Origin AS): 11461 Deaggregation factor: 2.07 Unique aggregates announced (without unneeded subnets): 13089 Number of IPv4 prefixes with a valid ROA: 13289 Number of IPv4 prefixes with an invalid ROA: 8 Number of IPv4 prefixes with no ROA: 10411 Total ASes present in the Internet Routing Table: 2785 Prefixes per ASN: 8.51 Origin-only ASes present in the Internet Routing Table: 2419 Origin ASes announcing only one prefix: 1090 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: 0 Average AS path length visible in the Internet Routing Table: 3.8 Max AS path length visible: 15 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 11 Number of instances of unregistered ASNs: 11 Number of 32-bit ASNs allocated by the RIRs: 47665 Number of 32-bit ASNs visible in the Routing Table: 723 Prefixes from 32-bit ASNs in the Routing Table: 5312 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: 5 Number of addresses announced to Internet: 219403888 Equivalent to 13 /8s, 19 /16s and 214 /24s Percentage of available address space announced: 5.9 Percentage of allocated address space announced: 5.9 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: 3132 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4837 Total APNIC prefixes after maximum aggregation: 2362 APNIC Deaggregation factor: 2.05 Prefixes being announced from the APNIC address blocks: 4913 Unique aggregates announced from the APNIC address blocks: 2760 APNIC Region origin ASes present in the Internet Routing Table: 607 APNIC Prefixes per ASN: 8.09 APNIC Region origin ASes announcing only one prefix: 252 APNIC Region transit ASes present in the Internet Routing Table: 52 Average APNIC Region AS path length visible: 4.3 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 249 Number of APNIC addresses announced to Internet: 44736576 Equivalent to 2 /8s, 170 /16s and 160 /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: 12732 Total ARIN prefixes after maximum aggregation: 5546 ARIN Deaggregation factor: 2.30 Prefixes being announced from the ARIN address blocks: 12491 Unique aggregates announced from the ARIN address blocks: 6284 ARIN Region origin ASes present in the Internet Routing Table: 1263 ARIN Prefixes per ASN: 9.89 ARIN Region origin ASes announcing only one prefix: 446 ARIN Region transit ASes present in the Internet Routing Table: 159 Average ARIN Region AS path length visible: 3.6 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 218 Number of ARIN addresses announced to Internet: 109917984 Equivalent to 6 /8s, 141 /16s and 55 /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: 3636 Total RIPE prefixes after maximum aggregation: 2885 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3797 Unique aggregates announced from the RIPE address blocks: 3143 RIPE Region origin ASes present in the Internet Routing Table: 666 RIPE Prefixes per ASN: 5.70 RIPE Region origin ASes announcing only one prefix: 303 RIPE Region transit ASes present in the Internet Routing Table: 106 Average RIPE Region AS path length visible: 3.9 Max RIPE Region AS path length visible: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 163 Number of RIPE addresses announced to Internet: 58219792 Equivalent to 3 /8s, 120 /16s and 93 /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: 1305 Total LACNIC prefixes after maximum aggregation: 486 LACNIC Deaggregation factor: 2.69 Prefixes being announced from the LACNIC address blocks: 1315 Unique aggregates announced from the LACNIC address blocks: 658 LACNIC Region origin ASes present in the Internet Routing Table: 131 LACNIC Prefixes per ASN: 10.04 LACNIC Region origin ASes announcing only one prefix: 58 LACNIC Region transit ASes present in the Internet Routing Table: 24 Average LACNIC Region AS path length visible: 3.8 Max LACNIC Region AS path length visible: 14 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 58 Number of LACNIC addresses announced to Internet: 4027392 Equivalent to 0 /8s, 61 /16s and 116 /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: 1187 Total AfriNIC prefixes after maximum aggregation: 179 AfriNIC Deaggregation factor: 6.63 Prefixes being announced from the AfriNIC address blocks: 1187 Unique aggregates announced from the AfriNIC address blocks: 239 AfriNIC Region origin ASes present in the Internet Routing Table: 56 AfriNIC Prefixes per ASN: 21.20 AfriNIC Region origin ASes announcing only one prefix: 31 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: 9 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 35 Number of AfriNIC addresses announced to Internet: 2498816 Equivalent to 0 /8s, 38 /16s and 33 /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 610 2169 462 SINET-AS Research Organization of Informa 7497 451 180 23 CSTNET-AS-AP Computer Network Information 1237 198 72 153 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 168 281 113 AARNET-AS-AP Australian Academic and Rese 55824 152 19 22 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 4621 62 36 8 UNINET-AS-AP UNINET-, TH 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 3273 4824 465 GOOGLE-CLOUD-PLATFORM, US 15169 813 183 41 GOOGLE, US 16509 692 382 389 AMAZON-02, US 376 200 162 150 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 2920 177 34 7 LACOE, US 2152 149 492 98 CENIC-2152, US 18558 138 18 4 NETBLK-RCOEK, US 81 127 471 35 NCREN, US 36492 122 8 32 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 680 283 1883 250 DFN Verein zur Foerderung eines Deutschen 786 214 1742 184 JANET Jisc Services Limited, GB 559 114 533 104 SWITCH Switch, Swiss Academic and Researc 8895 108 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 3267 81 29 70 NIKS, RU 1930 77 88 72 RCCN Fundacao para a Ciencia e a Tecnolog 553 75 366 75 BELWUE BelWue-Koordination, DE 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 292 178 43 Rede Nacional de Ensino e Pesquisa, BR 28391 159 10 71 Universidad Juarez Autonoma de Tabasco, M 11340 104 24 49 Red Universitaria Nacional, CL 271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 56 84 39 Fundacao Carlos Chagas Filho de Amparo a 61468 51 3 21 CEDIA, EC 19611 49 17 2 Associacao Antonio Vieira - Unisinos, BR 3596 40 8 4 Universidad Autonoma Metropolitana, MX 28614 38 2 2 Fundacao Universidade Regional de Blumena 1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 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 572 82 3 KENET-AS, KE 2018 375 318 69 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37215 41 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 36982 8 33 8 UCT, ZA 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 3273 4824 465 GOOGLE-CLOUD-PLATFORM, US 15169 813 183 41 GOOGLE, US 16509 692 382 389 AMAZON-02, US 2907 610 2169 462 SINET-AS Research Organization of Informa 36914 572 82 3 KENET-AS, KE 7497 451 180 23 CSTNET-AS-AP Computer Network Information 2018 375 318 69 TENET-1, ZA 1916 292 178 43 Rede Nacional de Ensino e Pesquisa, BR 680 283 1883 250 DFN Verein zur Foerderung eines Deutschen 786 214 1742 184 JANET Jisc Services Limited, GB Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 15169 813 772 GOOGLE, US 36914 572 569 KENET-AS, KE 7497 451 428 CSTNET-AS-AP Computer Network Information Cente 2018 375 306 TENET-1, ZA 16509 692 303 AMAZON-02, US 1916 292 249 Rede Nacional de Ensino e Pesquisa, BR 5786 197 196 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 2920 177 170 LACOE, US 2907 610 148 SINET-AS Research Organization of Information a 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 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 396334 UNALLOCATED 205.143.142.0/24 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 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 202.46.245.0/24 Origin: 147171 IDNIC-BRIN-AS-ID Badan Riset dan Inovasi 202.46.245.0/24 Transit: 64302 IDNIC-IDREN-AS-ID IDREN - Indonesia Rese 203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University 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 /11:4 /12:14 /13:30 /14:70 /15:129 /16:2057 /17:530 /18:510 /19:728 /20:2751 /21:986 /22:1513 /23:1632 /24:12542 /25:64 /26:80 /27:47 /28:6 /29:4 /30:5 /31:1 /32:3 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 548 572 KENET-AS, KE 396982 294 3273 GOOGLE-CLOUD-PLATFORM, US 15169 273 813 GOOGLE, US 16509 178 692 AMAZON-02, US 8895 105 108 ISU Internet Services Unit ISU, SA 1916 86 292 Rede Nacional de Ensino e Pesquisa, BR 31638 48 48 ASN-LEPIDA, IT 3267 36 81 NIKS, RU 37215 35 41 MAREN, MW 28614 32 38 Fundacao Universidade Regional de Blumenau, BR Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 2:1 3:52 5:23 8:28 12:2 13:43 14:95 15:26 16:3 18:20 23:91 24:5 31:5 34:25 35:53 36:1 37:26 38:11 40:1 41:231 42:18 43:2 44:6 45:55 46:9 47:1 49:12 50:8 52:11 54:10 57:5 58:14 59:18 60:6 61:3 62:9 63:34 64:91 65:7 66:59 67:48 68:12 69:27 70:19 71:1 72:12 74:132 75:1 76:29 77:11 78:3 79:12 80:13 81:27 82:6 83:6 84:5 85:51 86:7 87:5 88:1 89:21 91:47 92:5 93:46 94:3 95:2 96:7 97:1 98:3 99:33 101:3 102:14 103:381 104:218 107:32 108:103 109:11 110:1 111:7 113:1 114:22 116:10 117:61 118:34 119:30 121:13 122:8 123:8 124:42 125:5 128:57 129:41 130:101 131:61 132:65 133:158 134:120 135:1 136:290 137:62 138:12 139:6 140:35 141:7 142:326 143:26 144:43 145:13 146:130 147:33 148:201 149:11 150:37 151:25 152:141 153:15 154:41 155:90 156:129 157:32 158:31 159:132 160:35 161:39 162:60 163:74 164:13 165:52 167:29 168:127 169:10 170:39 171:1 172:129 173:95 175:15 176:1 177:5 178:1 179:9 180:16 181:1 182:11 184:5 185:89 186:4 187:24 188:28 190:17 191:13 192:1514 193:294 194:128 195:75 196:149 197:354 198:439 199:283 200:303 201:23 202:638 203:438 204:377 205:130 206:210 207:224 208:69 209:146 210:225 211:3 212:151 213:8 216:141 217:24 218:20 219:7 220:12 222:4 223:17 End of report