IPv4 R&E Routing Table Report 17:05 GMT Thu 12 Sep, 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: 13648 Prefixes after maximum aggregation (per Origin AS): 7897 Deaggregation factor: 1.73 Unique aggregates announced (without unneeded subnets): 8649 Number of IPv4 prefixes with a valid ROA: 5014 Number of IPv4 prefixes with an invalid ROA: 1 Number of IPv4 prefixes with no ROA: 8633 Total ASes present in the Internet Routing Table: 2023 Prefixes per ASN: 6.75 Origin-only ASes present in the Internet Routing Table: 1747 Origin ASes announcing only one prefix: 837 Transit ASes present in the Internet Routing Table: 276 Transit-only ASes present in the Internet Routing Table: 46 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 4.6 Max AS path length visible: 17 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: 45346 Number of 32-bit ASNs visible in the Routing Table: 491 Prefixes from 32-bit ASNs in the Routing Table: 1310 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: 163112224 Equivalent to 9 /8s, 184 /16s and 229 /24s Percentage of available address space announced: 4.4 Percentage of allocated address space announced: 4.4 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: 1600 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3234 Total APNIC prefixes after maximum aggregation: 1731 APNIC Deaggregation factor: 1.87 Prefixes being announced from the APNIC address blocks: 3233 Unique aggregates announced from the APNIC address blocks: 1903 APNIC Region origin ASes present in the Internet Routing Table: 428 APNIC Prefixes per ASN: 7.55 APNIC Region origin ASes announcing only one prefix: 203 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: 12 Number of APNIC region 32-bit ASNs visible in the Routing Table: 174 Number of APNIC addresses announced to Internet: 37889344 Equivalent to 2 /8s, 66 /16s and 37 /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: 6032 Total ARIN prefixes after maximum aggregation: 3361 ARIN Deaggregation factor: 1.79 Prefixes being announced from the ARIN address blocks: 6047 Unique aggregates announced from the ARIN address blocks: 3743 ARIN Region origin ASes present in the Internet Routing Table: 862 ARIN Prefixes per ASN: 7.02 ARIN Region origin ASes announcing only one prefix: 318 ARIN Region transit ASes present in the Internet Routing Table: 110 Average ARIN Region AS path length visible: 5.4 Max ARIN Region AS path length visible: 17 Number of ARIN region 32-bit ASNs visible in the Routing Table: 140 Number of ARIN addresses announced to Internet: 64525152 Equivalent to 3 /8s, 216 /16s and 147 /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: 2943 Total RIPE prefixes after maximum aggregation: 2452 RIPE Deaggregation factor: 1.20 Prefixes being announced from the RIPE address blocks: 2932 Unique aggregates announced from the RIPE address blocks: 2523 RIPE Region origin ASes present in the Internet Routing Table: 570 RIPE Prefixes per ASN: 5.14 RIPE Region origin ASes announcing only one prefix: 265 RIPE Region transit ASes present in the Internet Routing Table: 86 Average RIPE Region AS path length visible: 3.7 Max RIPE Region AS path length visible: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 133 Number of RIPE addresses announced to Internet: 56993152 Equivalent to 3 /8s, 101 /16s and 165 /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: 806 Total LACNIC prefixes after maximum aggregation: 313 LACNIC Deaggregation factor: 2.58 Prefixes being announced from the LACNIC address blocks: 802 Unique aggregates announced from the LACNIC address blocks: 421 LACNIC Region origin ASes present in the Internet Routing Table: 96 LACNIC Prefixes per ASN: 8.35 LACNIC Region origin ASes announcing only one prefix: 38 LACNIC Region transit ASes present in the Internet Routing Table: 18 Average LACNIC Region AS path length visible: 4.9 Max LACNIC Region AS path length visible: 10 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 34 Number of LACNIC addresses announced to Internet: 3051264 Equivalent to 0 /8s, 46 /16s and 143 /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: 633 Total AfriNIC prefixes after maximum aggregation: 40 AfriNIC Deaggregation factor: 15.82 Prefixes being announced from the AfriNIC address blocks: 632 Unique aggregates announced from the AfriNIC address blocks: 57 AfriNIC Region origin ASes present in the Internet Routing Table: 21 AfriNIC Prefixes per ASN: 30.10 AfriNIC Region origin ASes announcing only one prefix: 13 AfriNIC Region transit ASes present in the Internet Routing Table: 6 Average AfriNIC Region AS path length visible: 4.0 Max AfriNIC Region AS path length visible: 14 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 10 Number of AfriNIC addresses announced to Internet: 651008 Equivalent to 0 /8s, 9 /16s and 239 /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 593 2169 465 SINET-AS Research Organization of Informa 7497 450 212 25 CSTNET-AS-AP Computer Network Information 58647 180 18 2 KAGAWAU-AS Kagawa University, JP 7575 172 329 115 AARNET-AS-AP Australian Academic and Rese 55824 133 19 20 NKN-CORE-NW NKN Core Network, IN 4538 125 4192 72 ERX-CERNET-BKB China Education and Resear 2697 58 4 34 ERX-ERNET-AS Education and Research Netwo 45773 47 3 5 HECPERN-AS-PK PERN AS Content Servie Prov 132524 44 9 11 TIFR-AS Tata Institute of Fundamental Res 24361 33 56 17 CNGI-NJ-IX-AS-AP CERNET2 IX at Southeast 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 2152 490 507 97 CENIC-2152, US 2920 229 44 49 LACOE, US 5786 198 16 1 UPRENET, PR 376 172 159 127 RISQ-AS, CA 18558 140 18 4 NETBLK-RCOEK, US 270 129 332 91 AS270, US 23024 95 7 21 OCDE, US 21976 87 50 17 NJEDGE-NET, US 237 85 541 50 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 249 DFN Verein zur Foerderung eines Deutschen 786 185 1767 182 JANET Jisc Services Limited, GB 559 113 533 103 SWITCH Peering requests: peering@switch.c 1103 97 2015 84 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 200521 54 4 22 SEAP-AGE, ES 1653 53 150 50 SUNET SUNET Swedish University Network, E 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 194 163 39 Rede Nacional de Ensino e Pesquisa, BR 11340 109 25 52 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 42 67 31 Fundacao Carlos Chagas Filho de Amparo a 1251 32 31 24 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 20191 28 16 1 Pontificia Universidad Catolica de Chile, 21612 24 16 1 FUNDACAO INSTITUTO OSWALDO CRUZ, BR 3597 19 16 2 Fundacion InnovaT, AR 27790 18 2 2 Universidad Nacional de Cordoba, AR 28609 17 1 2 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 515 82 3 KENET-AS, KE 327700 46 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37661 12 8 4 NRaE1-AS, NG 37215 11 8 1 MAREN, MW 37654 6 1 6 RwEdNet-AS, RW 328903 4 0 1 RITER, CI 37532 2 20 2 ZAMREN, ZM 3208 1 2 1 ARN, DZ 36944 1 1 1 UBUNTU-UNICAST-AS, MW 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 593 2169 465 SINET-AS Research Organization of Informa 36914 515 82 3 KENET-AS, KE 2152 490 507 97 CENIC-2152, US 7497 450 212 25 CSTNET-AS-AP Computer Network Information 680 282 1899 249 DFN Verein zur Foerderung eines Deutschen 2920 229 44 49 LACOE, US 5786 198 16 1 UPRENET, PR 1916 194 163 39 Rede Nacional de Ensino e Pesquisa, BR 786 185 1767 182 JANET Jisc Services Limited, GB 58647 180 18 2 KAGAWAU-AS Kagawa University, JP Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 515 512 KENET-AS, KE 7497 450 425 CSTNET-AS-AP Computer Network Information Cente 2152 490 393 CENIC-2152, US 5786 198 197 UPRENET, PR 2920 229 180 LACOE, US 58647 180 178 KAGAWAU-AS Kagawa University, JP 1916 194 155 Rede Nacional de Ensino e Pesquisa, BR 18558 140 136 NETBLK-RCOEK, US 55824 133 113 NKN-CORE-NW NKN Core Network, IN 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 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/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 /11:1 /12:9 /13:16 /14:33 /15:97 /16:1577 /17:290 /18:299 /19:408 /20:579 /21:606 /22:1003 /23:1135 /24:7485 /25:28 /26:49 /27:31 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 494 515 KENET-AS, KE 2152 60 490 CENIC-2152, US 1916 41 194 Rede Nacional de Ensino e Pesquisa, BR 327700 40 46 MoRENet, MZ 23024 37 95 OCDE, US 200521 31 54 SEAP-AGE, ES 25977 27 39 HCCS, US 26898 24 32 LNOCA-ORG, US 31638 20 20 ASN-LEPIDA, IT 3233 19 23 ICI-ROTLD Romanian National R&D Network, RO 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 14:92 23:2 24:3 31:1 35:3 37:8 38:3 41:218 42:6 44:4 45:26 46:4 49:9 50:1 58:1 59:8 60:6 61:2 62:5 63:3 64:21 65:1 66:17 67:33 68:2 69:9 70:2 72:7 74:19 76:4 77:3 78:3 79:10 80:7 81:24 82:2 83:6 84:6 85:25 86:1 87:1 89:11 91:37 93:13 94:2 95:2 96:5 98:2 101:1 102:5 103:222 104:66 108:2 109:1 111:16 114:1 116:7 118:18 119:24 121:27 122:8 123:8 124:42 128:60 129:23 130:82 131:49 132:20 133:154 134:75 136:196 137:84 138:57 139:5 140:17 141:3 142:17 143:16 144:23 145:2 146:120 147:19 148:8 149:13 150:9 151:3 152:106 153:7 154:13 155:26 156:134 157:23 158:30 159:116 160:29 161:10 162:17 163:56 164:14 165:8 167:5 168:28 169:6 170:10 172:1 173:6 175:6 177:2 179:8 180:15 182:1 184:6 185:40 186:3 187:4 188:11 189:3 190:1 191:2 192:1157 193:225 194:84 195:58 196:8 197:313 198:409 199:184 200:227 201:18 202:372 203:202 204:339 205:124 206:145 207:270 208:45 209:129 210:99 211:1 212:41 213:4 216:48 217:9 219:5 220:4 222:1 223:15 End of report