IPv4 R&E Routing Table Report 22:15 GMT Mon 05 May, 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: 27362 Prefixes after maximum aggregation (per Origin AS): 13745 Deaggregation factor: 1.99 Unique aggregates announced (without unneeded subnets): 15598 Number of IPv4 prefixes with a valid ROA: 16276 Number of IPv4 prefixes with an invalid ROA: 7 Number of IPv4 prefixes with no ROA: 11079 Total ASes present in the Internet Routing Table: 2804 Prefixes per ASN: 9.76 Origin-only ASes present in the Internet Routing Table: 2442 Origin ASes announcing only one prefix: 1074 Transit ASes present in the Internet Routing Table: 362 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: 3.7 Max AS path length visible: 20 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 34 Number of instances of unregistered ASNs: 34 Number of 32-bit ASNs allocated by the RIRs: 46335 Number of 32-bit ASNs visible in the Routing Table: 721 Prefixes from 32-bit ASNs in the Routing Table: 5023 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: 8 Number of addresses announced to Internet: 310202960 Equivalent to 18 /8s, 125 /16s and 82 /24s Percentage of available address space announced: 8.4 Percentage of allocated address space announced: 8.4 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: 3838 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4958 Total APNIC prefixes after maximum aggregation: 2340 APNIC Deaggregation factor: 2.12 Prefixes being announced from the APNIC address blocks: 5098 Unique aggregates announced from the APNIC address blocks: 2832 APNIC Region origin ASes present in the Internet Routing Table: 604 APNIC Prefixes per ASN: 8.44 APNIC Region origin ASes announcing only one prefix: 247 APNIC Region transit ASes present in the Internet Routing Table: 52 Average APNIC Region AS path length visible: 5.0 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 246 Number of APNIC addresses announced to Internet: 47281216 Equivalent to 2 /8s, 209 /16s and 116 /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: 16342 Total ARIN prefixes after maximum aggregation: 7873 ARIN Deaggregation factor: 2.08 Prefixes being announced from the ARIN address blocks: 15644 Unique aggregates announced from the ARIN address blocks: 8393 ARIN Region origin ASes present in the Internet Routing Table: 1292 ARIN Prefixes per ASN: 12.11 ARIN Region origin ASes announcing only one prefix: 456 ARIN Region transit ASes present in the Internet Routing Table: 159 Average ARIN Region AS path length visible: 3.3 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 230 Number of ARIN addresses announced to Internet: 175346880 Equivalent to 10 /8s, 115 /16s and 148 /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: 3667 Total RIPE prefixes after maximum aggregation: 2927 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 4231 Unique aggregates announced from the RIPE address blocks: 3592 RIPE Region origin ASes present in the Internet Routing Table: 661 RIPE Prefixes per ASN: 6.40 RIPE Region origin ASes announcing only one prefix: 286 RIPE Region transit ASes present in the Internet Routing Table: 105 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: 153 Number of RIPE addresses announced to Internet: 80364816 Equivalent to 4 /8s, 202 /16s and 69 /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: 1216 Total LACNIC prefixes after maximum aggregation: 423 LACNIC Deaggregation factor: 2.87 Prefixes being announced from the LACNIC address blocks: 1229 Unique aggregates announced from the LACNIC address blocks: 530 LACNIC Region origin ASes present in the Internet Routing Table: 133 LACNIC Prefixes per ASN: 9.24 LACNIC Region origin ASes announcing only one prefix: 58 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 3.2 Max LACNIC Region AS path length visible: 10 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 61 Number of LACNIC addresses announced to Internet: 4536384 Equivalent to 0 /8s, 69 /16s and 56 /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: 1145 Total AfriNIC prefixes after maximum aggregation: 176 AfriNIC Deaggregation factor: 6.51 Prefixes being announced from the AfriNIC address blocks: 1152 Unique aggregates announced from the AfriNIC address blocks: 243 AfriNIC Region origin ASes present in the Internet Routing Table: 53 AfriNIC Prefixes per ASN: 21.74 AfriNIC Region origin ASes announcing only one prefix: 27 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 4.5 Max AfriNIC Region AS path length visible: 20 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 31 Number of AfriNIC addresses announced to Internet: 2669568 Equivalent to 0 /8s, 40 /16s and 188 /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 639 2170 465 SINET-AS Research Organization of Informa 7497 454 180 24 CSTNET-AS-AP Computer Network Information 1237 196 74 146 KREONET-AS-KR KISTI, KR 4538 193 4192 72 ERX-CERNET-BKB China Education and Resear 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 174 282 117 AARNET-AS-AP Australian Academic and Rese 55824 146 19 21 NKN-CORE-NW NKN Core Network, IN 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 67 37 9 UNINET-AS-AP UNINET-, TH 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 2956 3657 470 GOOGLE-CLOUD-PLATFORM, US 16509 2428 1854 1113 AMAZON-02, US 14618 1050 4451 806 AMAZON-AES, US 15169 966 2008 71 GOOGLE, US 8075 757 16020 637 MICROSOFT-CORP-MSN-AS-BLOCK, US 376 202 162 151 RISQ-AS, CA 5786 199 16 1 UPRENET, PR 2920 169 34 7 LACOE, US 2152 147 507 97 CENIC-2152, US 18558 139 18 4 NETBLK-RCOEK, 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 680 284 1899 250 DFN Verein zur Foerderung eines Deutschen 786 195 1750 187 JANET Jisc Services Limited, GB 559 114 533 104 SWITCH Peering requests: peering@switch.c 8895 109 24 5 ISU Internet Services Unit ISU, SA 1103 98 1743 84 SURFNET-NL SURFnet, The Netherlands, NL 2614 89 26 69 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 3267 80 29 70 NIKS, RU 1930 79 88 74 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 326 178 43 Rede Nacional de Ensino e Pesquisa, BR 11340 110 25 52 Red Universitaria Nacional, CL 271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 52 100 36 Fundacao Carlos Chagas Filho de Amparo a 61468 52 3 21 CEDIA, EC 19611 48 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 20191 28 16 1 Pontificia Universidad Catolica de Chile, 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 535 82 3 KENET-AS, KE 2018 373 318 69 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37215 34 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 37661 9 6 3 NRaE1-AS, NG 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 2956 3657 470 GOOGLE-CLOUD-PLATFORM, US 16509 2428 1854 1113 AMAZON-02, US 14618 1050 4451 806 AMAZON-AES, US 15169 966 2008 71 GOOGLE, US 8075 757 16020 637 MICROSOFT-CORP-MSN-AS-BLOCK, US 2907 639 2170 465 SINET-AS Research Organization of Informa 36914 535 82 3 KENET-AS, KE 7497 454 180 24 CSTNET-AS-AP Computer Network Information 2018 373 318 69 TENET-1, ZA 1916 326 178 43 Rede Nacional de Ensino e Pesquisa, BR 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 2428 1315 AMAZON-02, US 15169 966 895 GOOGLE, US 36914 535 532 KENET-AS, KE 7497 454 430 CSTNET-AS-AP Computer Network Information Cente 2018 373 304 TENET-1, ZA 1916 326 283 Rede Nacional de Ensino e Pesquisa, BR 14618 1050 244 AMAZON-AES, US 5786 199 198 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 2907 639 174 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 36288 UNALLOCATED 64.79.154.0/24 293 ESNET, US 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 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 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 198.135.168.0/24 Origin: 14618 AMAZON-AES, US 198.135.168.0/24 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 /10:3 /11:10 /12:34 /13:51 /14:111 /15:199 /16:2289 /17:551 /18:552 /19:791 /20:2821 /21:1103 /22:1676 /23:1837 /24:15131 /25:60 /26:83 /27:36 /28:3 /29:14 /30:3 /31:0 /32:3 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 511 535 KENET-AS, KE 16509 394 2428 AMAZON-02, US 14618 335 1050 AMAZON-AES, US 396982 280 2956 GOOGLE-CLOUD-PLATFORM, US 15169 275 966 GOOGLE, US 8075 141 757 MICROSOFT-CORP-MSN-AS-BLOCK, US 8895 106 109 ISU Internet Services Unit ISU, SA 1916 85 326 Rede Nacional de Ensino e Pesquisa, BR 23024 38 99 OCDE, US 3267 36 80 NIKS, RU Complete listing at https://bgp.nsrc.org/REN/RedCLARA/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 2:2 3:109 5:26 8:28 12:2 13:78 14:92 15:76 16:119 18:85 23:120 24:3 31:6 34:24 35:65 36:1 37:11 38:11 40:5 41:215 42:18 43:2 44:4 45:82 46:10 47:1 49:8 50:7 52:552 54:163 57:7 58:15 59:20 60:6 61:3 62:16 63:37 64:160 65:24 66:97 67:70 68:16 69:56 70:30 71:3 72:16 74:159 75:1 76:41 77:11 78:3 79:11 80:14 81:25 82:8 83:9 84:6 85:58 86:6 87:6 88:1 89:21 91:60 92:9 93:46 94:8 95:2 96:8 97:2 98:11 99:48 101:4 102:15 103:401 104:256 107:38 108:114 109:10 111:22 113:5 114:32 116:11 117:64 118:34 119:31 121:29 122:8 123:8 124:42 125:5 128:60 129:48 130:142 131:74 132:67 133:156 134:113 135:9 136:307 137:72 138:19 139:22 140:43 141:13 142:332 143:33 144:49 145:8 146:140 147:46 148:50 149:16 150:76 151:41 152:148 153:15 154:45 155:119 156:137 157:36 158:38 159:161 160:36 161:41 162:95 163:71 164:29 165:68 166:4 167:27 168:155 169:13 170:105 171:1 172:118 173:115 174:2 175:16 176:4 177:5 178:3 179:13 180:16 181:1 182:12 184:7 185:139 186:3 187:25 188:20 189:3 190:17 191:13 192:1602 193:331 194:142 195:89 196:149 197:326 198:505 199:359 200:305 201:38 202:647 203:452 204:410 205:163 206:243 207:254 208:164 209:211 210:227 211:4 212:155 213:21 216:222 217:28 218:23 219:7 220:16 222:4 223:16 End of report