IPv4 R&E Routing Table Report 17:05 GMT Tue 26 Mar, 2024 IPv4 BGP Table (R&E) as seen at ASREN. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ASREN/ Analysis Summary ---------------- BGP routing table entries examined: 12265 Prefixes after maximum aggregation (per Origin AS): 7446 Deaggregation factor: 1.65 Unique aggregates announced (without unneeded subnets): 8264 Number of IPv4 prefixes with a valid ROA: 4050 Number of IPv4 prefixes with an invalid ROA: 0 Number of IPv4 prefixes with no ROA: 8215 Total ASes present in the Internet Routing Table: 1944 Prefixes per ASN: 6.31 Origin-only ASes present in the Internet Routing Table: 1671 Origin ASes announcing only one prefix: 787 Transit ASes present in the Internet Routing Table: 273 Transit-only ASes present in the Internet Routing Table: 57 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 16 Max AS path prepend of ASN ( 30116) 10 Prefixes from unregistered ASNs in the Routing Table: 9 Number of instances of unregistered ASNs: 9 Number of 32-bit ASNs allocated by the RIRs: 43905 Number of 32-bit ASNs visible in the Routing Table: 470 Prefixes from 32-bit ASNs in the Routing Table: 1381 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: 1 Number of addresses announced to Internet: 153497952 Equivalent to 9 /8s, 38 /16s and 49 /24s Percentage of available address space announced: 4.1 Percentage of allocated address space announced: 4.1 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: 1207 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3279 Total APNIC prefixes after maximum aggregation: 1724 APNIC Deaggregation factor: 1.90 Prefixes being announced from the APNIC address blocks: 3279 Unique aggregates announced from the APNIC address blocks: 1871 APNIC Region origin ASes present in the Internet Routing Table: 426 APNIC Prefixes per ASN: 7.70 APNIC Region origin ASes announcing only one prefix: 195 APNIC Region transit ASes present in the Internet Routing Table: 45 Average APNIC Region AS path length visible: 4.0 Max APNIC Region AS path length visible: 16 Number of APNIC region 32-bit ASNs visible in the Routing Table: 171 Number of APNIC addresses announced to Internet: 37998944 Equivalent to 2 /8s, 67 /16s and 209 /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, 131072-153913 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: 4981 Total ARIN prefixes after maximum aggregation: 2875 ARIN Deaggregation factor: 1.73 Prefixes being announced from the ARIN address blocks: 5001 Unique aggregates announced from the ARIN address blocks: 3271 ARIN Region origin ASes present in the Internet Routing Table: 782 ARIN Prefixes per ASN: 6.40 ARIN Region origin ASes announcing only one prefix: 280 ARIN Region transit ASes present in the Internet Routing Table: 110 Average ARIN Region AS path length visible: 5.0 Max ARIN Region AS path length visible: 14 Number of ARIN region 32-bit ASNs visible in the Routing Table: 124 Number of ARIN addresses announced to Internet: 58377920 Equivalent to 3 /8s, 122 /16s and 198 /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, 393216-401308 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, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 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: 2943 Total RIPE prefixes after maximum aggregation: 2453 RIPE Deaggregation factor: 1.20 Prefixes being announced from the RIPE address blocks: 2932 Unique aggregates announced from the RIPE address blocks: 2542 RIPE Region origin ASes present in the Internet Routing Table: 569 RIPE Prefixes per ASN: 5.15 RIPE Region origin ASes announcing only one prefix: 259 RIPE Region transit ASes present in the Internet Routing Table: 83 Average RIPE Region AS path length visible: 3.7 Max RIPE Region AS path length visible: 12 Number of RIPE region 32-bit ASNs visible in the Routing Table: 129 Number of RIPE addresses announced to Internet: 54852480 Equivalent to 3 /8s, 68 /16s and 251 /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, 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: 571 Total LACNIC prefixes after maximum aggregation: 317 LACNIC Deaggregation factor: 1.80 Prefixes being announced from the LACNIC address blocks: 570 Unique aggregates announced from the LACNIC address blocks: 487 LACNIC Region origin ASes present in the Internet Routing Table: 64 LACNIC Prefixes per ASN: 8.91 LACNIC Region origin ASes announcing only one prefix: 26 LACNIC Region transit ASes present in the Internet Routing Table: 17 Average LACNIC Region AS path length visible: 6.0 Max LACNIC Region AS path length visible: 10 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 18 Number of LACNIC addresses announced to Internet: 1355712 Equivalent to 0 /8s, 20 /16s and 175 /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: 482 Total AfriNIC prefixes after maximum aggregation: 70 AfriNIC Deaggregation factor: 6.89 Prefixes being announced from the AfriNIC address blocks: 482 Unique aggregates announced from the AfriNIC address blocks: 92 AfriNIC Region origin ASes present in the Internet Routing Table: 44 AfriNIC Prefixes per ASN: 10.95 AfriNIC Region origin ASes announcing only one prefix: 27 AfriNIC Region transit ASes present in the Internet Routing Table: 7 Average AfriNIC Region AS path length visible: 4.2 Max AfriNIC Region AS path length visible: 8 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 28 Number of AfriNIC addresses announced to Internet: 912640 Equivalent to 0 /8s, 13 /16s and 237 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 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 595 2162 464 SINET-AS Research Organization of Infor 7497 441 180 23 CSTNET-AS-AP Computer Network Informati 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 4538 180 4193 75 ERX-CERNET-BKB China Education and Rese 7575 172 329 115 AARNET-AS-AP Australian Academic and Re 55824 131 19 19 NKN-CORE-NW NKN Core Network, IN 2697 57 4 34 ERX-ERNET-AS Education and Research Net 45773 48 3 5 HECPERN-AS-PK PERN AS Content Servie Pr 132524 44 9 11 TIFR-AS Tata Institute of Fundamental R 9270 35 5 6 APAN-KR-AS National Infomation Society Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 5786 195 16 1 UPRENET, PR 2152 145 507 94 CSUNET-NW, US 18558 141 18 4 NETBLK-RCOEK, US 32440 119 35 18 LONI, US 270 117 328 81 AS270, US 23024 109 7 19 OCDE, US 2920 102 34 7 LACOE, US 376 80 6 57 RISQ-AS, CA 1736 79 16 1 MU-AS, US 21976 79 51 18 NJEDGE-NET, US Complete listing at https://bgp.nsrc.org/REN/ASREN/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 Deutsch 786 186 1767 183 JANET Jisc Services Limited, GB 559 114 533 104 SWITCH Peering requests: peering@switch 1103 95 1503 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 27 73 ROEDUNET, RO 137 81 676 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnol 2200 63 598 58 FR-RENATER Reseau National de telecommu 200521 56 4 20 SEAP-AGE, ES 1653 53 151 50 SUNET SUNET Swedish University Network, Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 28391 154 10 67 Universidad Juarez Autonoma de Tabasco, 11340 108 25 51 Red Universitaria Nacional, CL 1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 263683 32 10 20 Universidad de Costa Rica, CR 20191 27 2 23 Pontificia Universidad Catolica de Chil 3597 21 16 2 Fundacion InnovaT, AR 28571 19 40 18 UNIVERSIDADE DE SAO PAULO, BR 27790 18 2 2 Universidad Nacional de Cordoba, AR 28027 14 2 5 Escuela Superior Politecnica del Litora 61468 12 1 8 CEDIA, EC Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 327687 164 28 3 RENU, UG 36914 152 82 3 KENET-AS, KE 327700 45 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37074 13 8 2 UG-AS, GH 37654 11 1 6 RwEdNet-AS, RW 37215 9 8 1 MAREN, MW 37661 7 16 6 NRaE1-AS, NG 37182 6 8 1 TERNET, TZ 328358 5 1 1 Makerere-AS, UG Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 595 2162 464 SINET-AS Research Organization of Infor 7497 441 180 23 CSTNET-AS-AP Computer Network Informati 680 284 1899 250 DFN Verein zur Foerderung eines Deutsch 5786 195 16 1 UPRENET, PR 786 186 1767 183 JANET Jisc Services Limited, GB 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 4538 180 4193 75 ERX-CERNET-BKB China Education and Rese 7575 172 329 115 AARNET-AS-AP Australian Academic and Re 327687 164 28 3 RENU, UG 28391 154 10 67 Universidad Juarez Autonoma de Tabasco, Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 441 418 CSTNET-AS-AP Computer Network Information Cente 5786 195 194 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 327687 164 161 RENU, UG 36914 152 149 KENET-AS, KE 18558 141 137 NETBLK-RCOEK, US 55824 131 112 NKN-CORE-NW NKN Core Network, IN 4538 180 105 ERX-CERNET-BKB China Education and Research Net 32440 119 101 LONI, US 2920 102 95 LACOE, US Complete listing at https://bgp.nsrc.org/REN/ASREN/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 11570 UNALLOCATED 192.94.216.0/24 40498 ABQG, US 11570 UNALLOCATED 192.207.226.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.106.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.107.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.108.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.188.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.189.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.190.0/24 40498 ABQG, US 394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US Complete listing at https://bgp.nsrc.org/REN/ASREN/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 192.31.196.0/24 Origin: 112 RESERVED, ZZ 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL Complete listing at https://bgp.nsrc.org/REN/ASREN/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 /11:0 /12:9 /13:17 /14:33 /15:100 /16:1475 /17:259 /18:273 /19:354 /20:511 /21:552 /22:934 /23:1054 /24:6561 /25:31 /26:37 /27:63 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 143 152 KENET-AS, KE 32440 87 119 LONI, US 23024 51 109 OCDE, US 327700 39 45 MoRENet, MZ 200521 33 56 SEAP-AGE, ES 327687 28 164 RENU, UG 25977 27 30 HCCS, US 31638 21 21 ASN-LEPIDA, IT 3233 19 29 ICI-ROTLD Romanian National R&D Network, RO 22742 19 65 CT-EDU-NET, US Complete listing at https://bgp.nsrc.org/REN/ASREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1 5:15 8:2 12:1 14:91 23:2 24:3 31:1 35:4 38:3 41:74 42:12 44:4 45:25 46:5 49:9 58:10 59:9 60:6 61:2 62:6 63:2 64:14 66:11 67:32 68:2 69:7 70:2 72:7 74:12 76:39 77:4 78:3 79:10 80:8 81:25 82:2 83:6 84:6 85:24 86:1 87:1 89:10 91:38 93:4 94:2 95:1 96:5 101:5 102:36 103:228 104:69 108:3 109:5 111:16 114:1 116:8 118:19 119:20 121:28 122:8 123:8 124:42 125:1 128:61 129:21 130:81 131:40 132:9 133:157 134:75 136:193 137:117 138:57 139:4 140:12 141:3 142:26 143:11 144:23 145:2 146:119 147:21 148:161 149:11 150:9 151:3 152:65 153:6 154:6 155:40 156:67 157:10 158:30 159:114 160:28 161:9 162:7 163:67 164:11 165:7 167:3 168:29 169:6 170:10 172:1 173:5 175:17 176:8 177:2 179:10 180:14 182:1 184:1 185:42 186:1 187:1 188:11 190:8 191:1 192:1115 193:232 194:90 195:60 196:61 197:121 198:307 199:179 200:63 201:1 202:367 203:178 204:259 205:67 206:105 207:112 208:27 209:88 210:91 211:2 212:42 213:2 216:48 217:9 219:4 220:1 222:2 223:14 End of report