IPv4 R&E Routing Table Report 22:15 GMT Tue 16 Sep, 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: 23072 Prefixes after maximum aggregation (per Origin AS): 11115 Deaggregation factor: 2.08 Unique aggregates announced (without unneeded subnets): 12455 Number of IPv4 prefixes with a valid ROA: 12512 Number of IPv4 prefixes with an invalid ROA: 9 Number of IPv4 prefixes with no ROA: 10551 Total ASes present in the Internet Routing Table: 2779 Prefixes per ASN: 8.30 Origin-only ASes present in the Internet Routing Table: 2413 Origin ASes announcing only one prefix: 1080 Transit ASes present in the Internet Routing Table: 366 Transit-only ASes present in the Internet Routing Table: 58 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 4.0 Max AS path length visible: 16 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 33 Number of instances of unregistered ASNs: 33 Number of 32-bit ASNs allocated by the RIRs: 47428 Number of 32-bit ASNs visible in the Routing Table: 723 Prefixes from 32-bit ASNs in the Routing Table: 5291 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: 214643376 Equivalent to 12 /8s, 203 /16s and 50 /24s Percentage of available address space announced: 5.8 Percentage of allocated address space announced: 5.8 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: 2985 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4862 Total APNIC prefixes after maximum aggregation: 2375 APNIC Deaggregation factor: 2.05 Prefixes being announced from the APNIC address blocks: 4920 Unique aggregates announced from the APNIC address blocks: 2748 APNIC Region origin ASes present in the Internet Routing Table: 610 APNIC Prefixes per ASN: 8.07 APNIC Region origin ASes announcing only one prefix: 254 APNIC Region transit ASes present in the Internet Routing Table: 53 Average APNIC Region AS path length visible: 4.9 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 250 Number of APNIC addresses announced to Internet: 44674624 Equivalent to 2 /8s, 169 /16s and 174 /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: 12034 Total ARIN prefixes after maximum aggregation: 5176 ARIN Deaggregation factor: 2.32 Prefixes being announced from the ARIN address blocks: 11903 Unique aggregates announced from the ARIN address blocks: 5722 ARIN Region origin ASes present in the Internet Routing Table: 1260 ARIN Prefixes per ASN: 9.45 ARIN Region origin ASes announcing only one prefix: 445 ARIN Region transit ASes present in the Internet Routing Table: 156 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 219 Number of ARIN addresses announced to Internet: 105240096 Equivalent to 6 /8s, 69 /16s and 214 /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: 3640 Total RIPE prefixes after maximum aggregation: 2892 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3736 Unique aggregates announced from the RIPE address blocks: 3077 RIPE Region origin ASes present in the Internet Routing Table: 659 RIPE Prefixes per ASN: 5.67 RIPE Region origin ASes announcing only one prefix: 293 RIPE Region transit ASes present in the Internet Routing Table: 107 Average RIPE Region AS path length visible: 3.9 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 159 Number of RIPE addresses announced to Internet: 58161680 Equivalent to 3 /8s, 119 /16s and 122 /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: 1320 Total LACNIC prefixes after maximum aggregation: 489 LACNIC Deaggregation factor: 2.70 Prefixes being announced from the LACNIC address blocks: 1323 Unique aggregates announced from the LACNIC address blocks: 665 LACNIC Region origin ASes present in the Internet Routing Table: 135 LACNIC Prefixes per ASN: 9.80 LACNIC Region origin ASes announcing only one prefix: 59 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: 16 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 61 Number of LACNIC addresses announced to Internet: 4063040 Equivalent to 0 /8s, 61 /16s and 255 /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: 1183 Total AfriNIC prefixes after maximum aggregation: 178 AfriNIC Deaggregation factor: 6.65 Prefixes being announced from the AfriNIC address blocks: 1183 Unique aggregates announced from the AfriNIC address blocks: 237 AfriNIC Region origin ASes present in the Internet Routing Table: 55 AfriNIC Prefixes per ASN: 21.51 AfriNIC Region origin ASes announcing only one prefix: 29 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 4.7 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: 2496512 Equivalent to 0 /8s, 38 /16s and 24 /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 452 180 23 CSTNET-AS-AP Computer Network Information 1237 196 73 150 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 170 281 114 AARNET-AS-AP Australian Academic and Rese 55824 150 19 22 NKN-CORE-NW NKN Core Network, IN 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 65 37 9 UNINET-AS-AP UNINET-, TH 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 3241 4002 448 GOOGLE-CLOUD-PLATFORM, US 15169 800 183 41 GOOGLE, US 376 200 162 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2920 175 34 7 LACOE, US 2152 148 491 97 CENIC-2152, US 18558 138 18 4 NETBLK-RCOEK, US 81 127 471 35 NCREN, US 36492 122 8 32 GOOGLEWIFI, US 21976 90 34 16 NJEDGE-NET, 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 786 190 1742 185 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 99 1759 85 SURFNET-NL SURFnet, The Netherlands, NL 2614 92 26 69 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 3267 81 29 70 NIKS, RU 1930 78 88 73 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 291 177 43 Rede Nacional de Ensino e Pesquisa, BR 28391 159 10 71 Universidad Juarez Autonoma de Tabasco, M 11340 111 25 50 Red Universitaria Nacional, CL 271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 53 100 36 Fundacao Carlos Chagas Filho de Amparo a 61468 52 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 569 82 3 KENET-AS, KE 2018 374 318 69 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37215 39 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 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 3241 4002 448 GOOGLE-CLOUD-PLATFORM, US 15169 800 183 41 GOOGLE, US 2907 610 2169 462 SINET-AS Research Organization of Informa 36914 569 82 3 KENET-AS, KE 7497 452 180 23 CSTNET-AS-AP Computer Network Information 2018 374 318 69 TENET-1, ZA 1916 291 177 43 Rede Nacional de Ensino e Pesquisa, BR 680 283 1883 250 DFN Verein zur Foerderung eines Deutschen 376 200 162 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 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 800 759 GOOGLE, US 36914 569 566 KENET-AS, KE 7497 452 429 CSTNET-AS-AP Computer Network Information Cente 2018 374 305 TENET-1, ZA 1916 291 248 Rede Nacional de Ensino e Pesquisa, BR 5786 198 197 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 2920 175 168 LACOE, US 2907 610 148 SINET-AS Research Organization of Information a 18558 138 134 NETBLK-RCOEK, 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 26898 UNALLOCATED 131.187.248.0/22 3112 OARNET-AS-1, US 26898 UNALLOCATED 131.187.248.0/24 3112 OARNET-AS-1, US 26898 UNALLOCATED 131.187.249.0/24 3112 OARNET-AS-1, US 26898 UNALLOCATED 131.187.250.0/24 3112 OARNET-AS-1, US 26898 UNALLOCATED 131.187.251.0/24 3112 OARNET-AS-1, US 26898 UNALLOCATED 198.30.187.0/24 3112 OARNET-AS-1, US 26898 UNALLOCATED 208.108.80.0/20 3112 OARNET-AS-1, US 26898 UNALLOCATED 208.108.80.0/24 3112 OARNET-AS-1, US 26898 UNALLOCATED 208.108.81.0/24 3112 OARNET-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 185.131.202.0/24 Origin: 396982 GOOGLE-CLOUD-PLATFORM, US 185.131.202.0/24 Transit: 15169 GOOGLE, 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 202.46.240.0/20 Origin: 147171 IDNIC-BRIN-AS-ID Badan Riset dan Inovasi 202.46.240.0/20 Transit: 64302 IDNIC-IDREN-AS-ID IDREN - Indonesia Rese 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 /11:3 /12:14 /13:28 /14:68 /15:124 /16:2046 /17:516 /18:496 /19:725 /20:2667 /21:937 /22:1499 /23:1619 /24:12112 /25:66 /26:82 /27:49 /28:6 /29:4 /30:5 /31:1 /32:3 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 545 569 KENET-AS, KE 396982 294 3241 GOOGLE-CLOUD-PLATFORM, US 15169 273 800 GOOGLE, US 8895 105 108 ISU Internet Services Unit ISU, SA 1916 87 291 Rede Nacional de Ensino e Pesquisa, BR 31638 44 44 ASN-LEPIDA, IT 3267 36 81 NIKS, RU 37215 33 39 MAREN, MW 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 2:1 5:22 8:28 12:2 14:93 23:83 24:3 31:3 34:25 35:45 36:1 37:26 38:11 40:1 41:230 42:18 43:2 44:6 45:51 46:8 47:1 49:12 50:7 52:2 57:5 58:14 59:20 60:6 61:3 62:9 63:34 64:78 65:5 66:51 67:46 68:12 69:24 70:18 71:1 72:10 74:132 76:25 77:9 78:3 79:8 80:15 81:27 82:5 83:8 84:4 85:51 86:6 87:5 89:19 91:45 92:5 93:14 94:3 95:1 96:5 97:1 98:3 101:3 102:13 103:376 104:215 107:32 108:92 109:10 111:5 113:2 114:29 116:8 117:61 118:34 119:31 121:12 122:8 123:8 124:42 125:5 128:59 129:41 130:98 131:64 132:65 133:156 134:115 135:1 136:286 137:60 138:12 139:5 140:34 141:5 142:309 143:26 144:42 145:12 146:137 147:58 148:200 149:11 150:36 151:25 152:141 153:14 154:41 155:88 156:127 157:26 158:30 159:117 160:35 161:36 162:57 163:74 164:11 165:50 167:27 168:118 169:6 170:23 171:1 172:125 173:94 175:16 176:1 177:4 179:13 180:16 181:1 182:12 184:5 185:91 186:4 187:24 188:24 190:17 191:13 192:1512 193:289 194:134 195:75 196:148 197:353 198:430 199:277 200:301 201:23 202:637 203:443 204:372 205:129 206:203 207:218 208:93 209:146 210:221 211:3 212:146 213:4 216:129 217:22 218:23 219:7 220:16 222:4 223:16 End of report