IPv4 R&E Routing Table Report 17:05 GMT Fri 26 Jul, 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: 12977 Prefixes after maximum aggregation (per Origin AS): 7794 Deaggregation factor: 1.66 Unique aggregates announced (without unneeded subnets): 8621 Number of IPv4 prefixes with a valid ROA: 4347 Number of IPv4 prefixes with an invalid ROA: 0 Number of IPv4 prefixes with no ROA: 8630 Total ASes present in the Internet Routing Table: 1994 Prefixes per ASN: 6.51 Origin-only ASes present in the Internet Routing Table: 1723 Origin ASes announcing only one prefix: 811 Transit ASes present in the Internet Routing Table: 271 Transit-only ASes present in the Internet Routing Table: 43 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: 14 Max AS path prepend of ASN ( 30116) 10 Prefixes from unregistered ASNs in the Routing Table: 0 Number of instances of unregistered ASNs: 0 Number of 32-bit ASNs allocated by the RIRs: 45036 Number of 32-bit ASNs visible in the Routing Table: 473 Prefixes from 32-bit ASNs in the Routing Table: 1196 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: 2 Number of addresses announced to Internet: 159236288 Equivalent to 9 /8s, 125 /16s and 192 /24s Percentage of available address space announced: 4.3 Percentage of allocated address space announced: 4.3 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: 1396 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3360 Total APNIC prefixes after maximum aggregation: 1709 APNIC Deaggregation factor: 1.97 Prefixes being announced from the APNIC address blocks: 3360 Unique aggregates announced from the APNIC address blocks: 1880 APNIC Region origin ASes present in the Internet Routing Table: 417 APNIC Prefixes per ASN: 8.06 APNIC Region origin ASes announcing only one prefix: 193 APNIC Region transit ASes present in the Internet Routing Table: 41 Average APNIC Region AS path length visible: 4.0 Max APNIC Region AS path length visible: 12 Number of APNIC region 32-bit ASNs visible in the Routing Table: 163 Number of APNIC addresses announced to Internet: 37663552 Equivalent to 2 /8s, 62 /16s and 179 /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: 5590 Total ARIN prefixes after maximum aggregation: 3255 ARIN Deaggregation factor: 1.72 Prefixes being announced from the ARIN address blocks: 5598 Unique aggregates announced from the ARIN address blocks: 3706 ARIN Region origin ASes present in the Internet Routing Table: 841 ARIN Prefixes per ASN: 6.66 ARIN Region origin ASes announcing only one prefix: 301 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: 133 Number of ARIN addresses announced to Internet: 63308800 Equivalent to 3 /8s, 198 /16s and 4 /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, 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: 2950 Total RIPE prefixes after maximum aggregation: 2466 RIPE Deaggregation factor: 1.20 Prefixes being announced from the RIPE address blocks: 2942 Unique aggregates announced from the RIPE address blocks: 2544 RIPE Region origin ASes present in the Internet Routing Table: 573 RIPE Prefixes per ASN: 5.13 RIPE Region origin ASes announcing only one prefix: 264 RIPE Region transit ASes present in the Internet Routing Table: 84 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: 132 Number of RIPE addresses announced to Internet: 54997376 Equivalent to 3 /8s, 71 /16s and 49 /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: 659 Total LACNIC prefixes after maximum aggregation: 319 LACNIC Deaggregation factor: 2.07 Prefixes being announced from the LACNIC address blocks: 658 Unique aggregates announced from the LACNIC address blocks: 428 LACNIC Region origin ASes present in the Internet Routing Table: 95 LACNIC Prefixes per ASN: 6.93 LACNIC Region origin ASes announcing only one prefix: 38 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 4.9 Max LACNIC Region AS path length visible: 9 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 34 Number of LACNIC addresses announced to Internet: 2591232 Equivalent to 0 /8s, 39 /16s and 138 /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: 418 Total AfriNIC prefixes after maximum aggregation: 45 AfriNIC Deaggregation factor: 9.29 Prefixes being announced from the AfriNIC address blocks: 417 Unique aggregates announced from the AfriNIC address blocks: 61 AfriNIC Region origin ASes present in the Internet Routing Table: 25 AfriNIC Prefixes per ASN: 16.68 AfriNIC Region origin ASes announcing only one prefix: 15 AfriNIC Region transit ASes present in the Internet Routing Table: 5 Average AfriNIC Region AS path length visible: 4.0 Max AfriNIC Region AS path length visible: 8 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 11 Number of AfriNIC addresses announced to Internet: 673024 Equivalent to 0 /8s, 10 /16s and 69 /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 Informa 7497 448 180 24 CSTNET-AS-AP Computer Network Information 4538 188 4193 75 ERX-CERNET-BKB China Education and Resear 58647 183 18 2 KAGAWAU-AS Kagawa University, JP 7575 172 329 115 AARNET-AS-AP Australian Academic and Rese 55824 131 18 19 NKN-CORE-NW NKN Core Network, IN 2697 58 4 34 ERX-ERNET-AS Education and Research Netwo 38280 50 3 2 MONASHUNI-MY-AS-AP Monash University Sunw 45773 48 3 5 HECPERN-AS-PK PERN AS Content Servie Prov 132524 44 9 11 TIFR-AS Tata Institute of Fundamental Res 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 376 201 162 150 RISQ-AS, CA 5786 199 16 1 UPRENET, PR 2920 176 34 7 LACOE, US 2152 151 507 97 CENIC-2152, US 18558 140 18 4 NETBLK-RCOEK, US 270 129 332 91 AS270, US 23024 96 7 21 OCDE, US 21976 87 50 17 NJEDGE-NET, US 237 84 543 51 MERIT-AS-14, US 1736 79 16 1 MU-AS, 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 680 282 1899 250 DFN Verein zur Foerderung eines Deutschen 786 182 1767 181 JANET Jisc Services Limited, GB 559 113 533 103 SWITCH Peering requests: peering@switch.c 1103 96 1503 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 90 26 70 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog 2200 63 598 58 FR-RENATER Reseau National de telecommuni 1653 54 151 51 SUNET SUNET Swedish University Network, E 200521 48 3 27 SEAP-AGE, ES 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 1916 131 100 46 Rede Nacional de Ensino e Pesquisa, BR 11340 109 25 52 Red Universitaria Nacional, CL 1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 61468 31 2 10 CEDIA, EC 20191 27 2 23 Pontificia Universidad Catolica de Chile, 3597 21 16 2 Fundacion InnovaT, AR 27790 18 2 2 Universidad Nacional de Cordoba, AR 28571 18 40 18 UNIVERSIDADE DE SAO PAULO, BR 52888 17 7 8 UNIVERSIDADE FEDERAL DE SAO CARLOS, BR 28609 16 1 1 Instituto Nupef, BR 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 36914 289 82 3 KENET-AS, KE 327700 45 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37661 13 8 5 NRaE1-AS, NG 37182 11 8 1 TERNET, TZ 37215 7 8 1 MAREN, MW 37654 6 1 6 RwEdNet-AS, RW 328903 4 0 1 RITER, CI 37532 2 20 2 ZAMREN, ZM 328225 2 0 1 Strathmore-University, KE 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 Informa 7497 448 180 24 CSTNET-AS-AP Computer Network Information 36914 289 82 3 KENET-AS, KE 680 282 1899 250 DFN Verein zur Foerderung eines Deutschen 376 201 162 150 RISQ-AS, CA 5786 199 16 1 UPRENET, PR 4538 188 4193 75 ERX-CERNET-BKB China Education and Resear 58647 183 18 2 KAGAWAU-AS Kagawa University, JP 786 182 1767 181 JANET Jisc Services Limited, GB 2920 176 34 7 LACOE, US 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 448 424 CSTNET-AS-AP Computer Network Information Cente 36914 289 286 KENET-AS, KE 5786 199 198 UPRENET, PR 58647 183 181 KAGAWAU-AS Kagawa University, JP 2920 176 169 LACOE, US 18558 140 136 NETBLK-RCOEK, US 4538 188 113 ERX-CERNET-BKB China Education and Research Net 55824 131 112 NKN-CORE-NW NKN Core Network, IN 1916 131 85 Rede Nacional de Ensino e Pesquisa, BR 1736 79 78 MU-AS, US Complete listing at https://bgp.nsrc.org/REN/ASREN/data-CIDRnet Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 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 /15:97 /16:1558 /17:285 /18:290 /19:391 /20:575 /21:583 /22:979 /23:1083 /24:6931 /25:34 /26:44 /27:66 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 279 289 KENET-AS, KE 32440 59 75 LONI, US 327700 39 45 MoRENet, MZ 23024 38 96 OCDE, US 25977 27 39 HCCS, US 200521 27 48 SEAP-AGE, ES 26898 24 32 LNOCA-ORG, US 31638 21 21 ASN-LEPIDA, IT 3233 19 29 ICI-ROTLD Romanian National R&D Network, RO 22742 19 67 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 23:1 24:3 31:1 35:3 37:8 38:2 41:174 42:13 44:4 45:34 46:5 49:10 50:1 58:17 59:18 60:6 61:2 62:5 63:3 64:16 65:1 66:14 67:33 68:2 69:10 70:2 71:1 72:7 74:16 76:18 77:3 78:3 79:10 80:7 81:24 82:2 83:6 84:6 85:24 87:1 89:11 91:39 93:13 94:2 95:1 96:5 101:4 102:5 103:215 104:66 108:3 109:5 111:16 114:1 116:8 118:34 119:23 121:28 122:8 123:8 124:43 128:60 129:22 130:81 131:49 132:18 133:158 134:74 136:197 137:28 138:57 139:4 140:22 141:3 142:22 143:16 144:23 145:2 146:120 147:20 148:7 149:11 150:12 151:3 152:78 153:7 154:13 155:26 156:135 157:12 158:30 159:116 160:29 161:14 162:9 163:55 164:14 165:8 167:11 168:29 169:6 170:13 172:2 173:5 175:18 176:8 177:2 179:9 180:16 182:1 184:5 185:40 186:1 187:1 188:11 189:3 190:15 191:2 192:1137 193:225 194:86 195:61 196:4 197:154 198:340 199:183 200:141 201:23 202:378 203:201 204:309 205:103 206:132 207:178 208:50 209:84 210:99 211:2 212:38 213:3 216:49 217:9 219:5 220:4 222:2 223:14 End of report