IPv4 R&E Routing Table Report 22:15 GMT Wed 24 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: 23096 Prefixes after maximum aggregation (per Origin AS): 11121 Deaggregation factor: 2.08 Unique aggregates announced (without unneeded subnets): 12497 Number of IPv4 prefixes with a valid ROA: 12575 Number of IPv4 prefixes with an invalid ROA: 10 Number of IPv4 prefixes with no ROA: 10511 Total ASes present in the Internet Routing Table: 2787 Prefixes per ASN: 8.29 Origin-only ASes present in the Internet Routing Table: 2422 Origin ASes announcing only one prefix: 1087 Transit ASes present in the Internet Routing Table: 365 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: 3.9 Max AS path length visible: 15 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 32 Number of instances of unregistered ASNs: 32 Number of 32-bit ASNs allocated by the RIRs: 47538 Number of 32-bit ASNs visible in the Routing Table: 728 Prefixes from 32-bit ASNs in the Routing Table: 5328 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: 218059632 Equivalent to 12 /8s, 255 /16s and 83 /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: 2982 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4875 Total APNIC prefixes after maximum aggregation: 2381 APNIC Deaggregation factor: 2.05 Prefixes being announced from the APNIC address blocks: 4934 Unique aggregates announced from the APNIC address blocks: 2777 APNIC Region origin ASes present in the Internet Routing Table: 614 APNIC Prefixes per ASN: 8.04 APNIC Region origin ASes announcing only one prefix: 256 APNIC Region transit ASes present in the Internet Routing Table: 52 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: 252 Number of APNIC addresses announced to Internet: 44742208 Equivalent to 2 /8s, 170 /16s and 182 /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: 12066 Total ARIN prefixes after maximum aggregation: 5185 ARIN Deaggregation factor: 2.33 Prefixes being announced from the ARIN address blocks: 11935 Unique aggregates announced from the ARIN address blocks: 5730 ARIN Region origin ASes present in the Internet Routing Table: 1258 ARIN Prefixes per ASN: 9.49 ARIN Region origin ASes announcing only one prefix: 442 ARIN Region transit ASes present in the Internet Routing Table: 155 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: 220 Number of ARIN addresses announced to Internet: 108612896 Equivalent to 6 /8s, 121 /16s and 77 /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: 3621 Total RIPE prefixes after maximum aggregation: 2888 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3717 Unique aggregates announced from the RIPE address blocks: 3087 RIPE Region origin ASes present in the Internet Routing Table: 667 RIPE Prefixes per ASN: 5.57 RIPE Region origin ASes announcing only one prefix: 301 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: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 161 Number of RIPE addresses announced to Internet: 58144528 Equivalent to 3 /8s, 119 /16s and 55 /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: 1314 Total LACNIC prefixes after maximum aggregation: 484 LACNIC Deaggregation factor: 2.71 Prefixes being announced from the LACNIC address blocks: 1317 Unique aggregates announced from the LACNIC address blocks: 660 LACNIC Region origin ASes present in the Internet Routing Table: 133 LACNIC Prefixes per ASN: 9.90 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: 61 Number of LACNIC addresses announced to Internet: 4058112 Equivalent to 0 /8s, 61 /16s and 236 /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: 1188 Total AfriNIC prefixes after maximum aggregation: 178 AfriNIC Deaggregation factor: 6.67 Prefixes being announced from the AfriNIC address blocks: 1188 Unique aggregates announced from the AfriNIC address blocks: 238 AfriNIC Region origin ASes present in the Internet Routing Table: 55 AfriNIC Prefixes per ASN: 21.60 AfriNIC Region origin ASes announcing only one prefix: 30 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: 2498560 Equivalent to 0 /8s, 38 /16s and 32 /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 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 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 3267 4824 459 GOOGLE-CLOUD-PLATFORM, US 15169 801 183 41 GOOGLE, US 376 200 162 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2920 177 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 786 188 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 86 SURFNET-NL SURFnet, The Netherlands, NL 2614 89 26 69 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 290 177 42 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 573 82 3 KENET-AS, KE 2018 376 318 69 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37215 39 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 327700 13 16 1 MoRENet, MZ 30983 12 4 2 MARWAN-AS, MA 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 3267 4824 459 GOOGLE-CLOUD-PLATFORM, US 15169 801 183 41 GOOGLE, US 2907 610 2169 462 SINET-AS Research Organization of Informa 36914 573 82 3 KENET-AS, KE 7497 452 180 23 CSTNET-AS-AP Computer Network Information 2018 376 318 69 TENET-1, ZA 1916 290 177 42 Rede Nacional de Ensino e Pesquisa, BR 680 283 1883 250 DFN Verein zur Foerderung eines Deutschen 376 200 162 150 RISQ-AS, CA 1237 198 72 153 KREONET-AS-KR KISTI, KR 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 801 760 GOOGLE, US 36914 573 570 KENET-AS, KE 7497 452 429 CSTNET-AS-AP Computer Network Information Cente 2018 376 307 TENET-1, ZA 1916 290 248 Rede Nacional de Ensino e Pesquisa, BR 5786 198 197 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 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 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 /13:29 /14:70 /15:128 /16:2052 /17:523 /18:499 /19:723 /20:2666 /21:938 /22:1492 /23:1619 /24:12125 /25:65 /26:80 /27:48 /28:6 /29:4 /30:5 /31:1 /32:3 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 549 573 KENET-AS, KE 396982 294 3267 GOOGLE-CLOUD-PLATFORM, US 15169 273 801 GOOGLE, US 8895 105 108 ISU Internet Services Unit ISU, SA 1916 86 290 Rede Nacional de Ensino e Pesquisa, BR 31638 44 44 ASN-LEPIDA, IT 3267 36 81 NIKS, RU 200521 34 59 SEAP-AGE, ES 37215 33 39 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 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 41:225 42:18 43:2 44:6 45:51 46:7 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 70:19 71:1 72:10 74:132 76:25 77:9 78:3 79:12 80:12 81:27 82:6 83:8 84:4 85:51 86:6 87:5 89:19 91:43 92:5 93:14 94:3 95:2 96:5 97:1 98:3 101:3 102:13 103:385 104:215 107:32 108:92 109:11 111:5 113:2 114:29 116:8 117:61 118:34 119:31 121:12 122:8 123:8 124:42 125:5 128:57 129:41 130:98 131:64 132:65 133:156 134:114 135:1 136:286 137:62 138:11 139:5 140:34 141:5 142:309 143:26 144:42 145:12 146:137 147:58 148:200 149:11 150:36 151:23 152:141 153:14 154:41 155:88 156:129 157:26 158:30 159:117 160:35 161:36 162:56 163:74 164:11 165:50 167:27 168:118 169:6 170:23 171:1 172:126 173:94 175:16 176:1 177:4 179:12 180:16 181:1 182:12 184:5 185:90 186:4 187:24 188:24 190:17 191:13 192:1512 193:288 194:128 195:76 196:149 197:360 198:431 199:279 200:298 201:23 202:637 203:445 204:371 205:129 206:204 207:217 208:93 209:146 210:224 211:3 212:148 213:4 216:129 217:24 218:23 219:7 220:16 222:4 223:17 End of report