IPv4 R&E Routing Table Report 17:05 GMT Thu 07 Nov, 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: 12724 Prefixes after maximum aggregation (per Origin AS): 7789 Deaggregation factor: 1.63 Unique aggregates announced (without unneeded subnets): 8620 Number of IPv4 prefixes with a valid ROA: 4971 Number of IPv4 prefixes with an invalid ROA: 1 Number of IPv4 prefixes with no ROA: 7752 Total ASes present in the Internet Routing Table: 1992 Prefixes per ASN: 6.39 Origin-only ASes present in the Internet Routing Table: 1723 Origin ASes announcing only one prefix: 810 Transit ASes present in the Internet Routing Table: 269 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: 4.5 Max AS path length visible: 19 Max AS path prepend of ASN (327947) 11 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: 45796 Number of 32-bit ASNs visible in the Routing Table: 475 Prefixes from 32-bit ASNs in the Routing Table: 1241 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: 158461248 Equivalent to 9 /8s, 113 /16s and 237 /24s Percentage of available address space announced: 4.3 Percentage of allocated address space announced: 3.3 Percentage of available address space allocated: 128.6 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 4601 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3145 Total APNIC prefixes after maximum aggregation: 1666 APNIC Deaggregation factor: 1.89 Prefixes being announced from the APNIC address blocks: 402 Unique aggregates announced from the APNIC address blocks: 341 APNIC Region origin ASes present in the Internet Routing Table: 418 APNIC Prefixes per ASN: 0.96 APNIC Region origin ASes announcing only one prefix: 193 APNIC Region transit ASes present in the Internet Routing Table: 40 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: 176 Number of APNIC addresses announced to Internet: 5475392 Equivalent to 0 /8s, 83 /16s and 140 /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 43/8, 45/8, 146/8, 150/8, 160/8, 163/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 5685 Total ARIN prefixes after maximum aggregation: 3309 ARIN Deaggregation factor: 1.72 Prefixes being announced from the ARIN address blocks: 3100 Unique aggregates announced from the ARIN address blocks: 2205 ARIN Region origin ASes present in the Internet Routing Table: 876 ARIN Prefixes per ASN: 3.54 ARIN Region origin ASes announcing only one prefix: 313 ARIN Region transit ASes present in the Internet Routing Table: 111 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: 138 Number of ARIN addresses announced to Internet: 18384192 Equivalent to 1 /8s, 24 /16s and 133 /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 66/8, 139/8, 144/8, 149/8, 162/8, 164/8, 192/8, 198/8, 199/8, 204/8, 205/8, 207/8, 208/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 2953 Total RIPE prefixes after maximum aggregation: 2463 RIPE Deaggregation factor: 1.20 Prefixes being announced from the RIPE address blocks: 817 Unique aggregates announced from the RIPE address blocks: 778 RIPE Region origin ASes present in the Internet Routing Table: 571 RIPE Prefixes per ASN: 1.43 RIPE Region origin ASes announcing only one prefix: 267 RIPE Region transit ASes present in the Internet Routing Table: 85 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: 136 Number of RIPE addresses announced to Internet: 10187520 Equivalent to 0 /8s, 155 /16s and 115 /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 152/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 582 Total LACNIC prefixes after maximum aggregation: 301 LACNIC Deaggregation factor: 1.93 Prefixes being announced from the LACNIC address blocks: 149 Unique aggregates announced from the LACNIC address blocks: 120 LACNIC Region origin ASes present in the Internet Routing Table: 52 LACNIC Prefixes per ASN: 2.87 LACNIC Region origin ASes announcing only one prefix: 19 LACNIC Region transit ASes present in the Internet Routing Table: 16 Average LACNIC Region AS path length visible: 4.7 Max LACNIC Region AS path length visible: 8 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 11 Number of LACNIC addresses announced to Internet: 423680 Equivalent to 0 /8s, 6 /16s and 119 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + ERX transfers LACNIC Address Blocks 72/8, 128/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 359 Total AfriNIC prefixes after maximum aggregation: 50 AfriNIC Deaggregation factor: 7.18 Prefixes being announced from the AfriNIC address blocks: 0 Unique aggregates announced from the AfriNIC address blocks: 0 AfriNIC Region origin ASes present in the Internet Routing Table: 29 AfriNIC Prefixes per ASN: 0.00 AfriNIC Region origin ASes announcing only one prefix: 18 AfriNIC Region transit ASes present in the Internet Routing Table: 8 Average AfriNIC Region AS path length visible: 5.6 Max AfriNIC Region AS path length visible: 19 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 14 Number of AfriNIC addresses announced to Internet: 0 Equivalent to 0 /8s, 0 /16s and 0 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 161/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 595 2170 465 SINET-AS Research Organization of Informa 7497 447 180 24 CSTNET-AS-AP Computer Network Information 58647 180 18 2 KAGAWAU-AS Kagawa University, JP 7575 171 329 114 AARNET-AS-AP Australian Academic and Rese 55824 132 18 19 NKN-CORE-NW NKN Core Network, IN 4538 125 4192 72 ERX-CERNET-BKB China Education and Resear 2697 60 4 35 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 376 200 162 149 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 2920 175 34 7 LACOE, US 2152 150 507 97 CENIC-2152, US 18558 140 18 4 NETBLK-RCOEK, US 23024 95 7 21 OCDE, US 21976 91 50 17 NJEDGE-NET, US 237 85 541 50 MERIT-AS-14, US 1736 79 16 1 MU-AS, US 81 77 218 37 NCREN, 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 680 283 1899 249 DFN Verein zur Foerderung eines Deutschen 786 186 1767 183 JANET Jisc Services Limited, GB 559 114 533 104 SWITCH Peering requests: peering@switch.c 1103 97 1759 84 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 26 73 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 53 150 50 SUNET SUNET Swedish University Network, E 200521 53 4 24 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 196 39 113 Rede Nacional de Ensino e Pesquisa, BR 11340 110 25 53 Red Universitaria Nacional, CL 271640 65 4 28 UNIVERSIDADE FEDERAL DE VICOSA, BR 20191 28 16 1 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 61468 14 1 8 CEDIA, EC 278 10 16 4 Universidad Nacional Autonoma de Mexico, 21612 8 1 7 FUNDACAO INSTITUTO OSWALDO CRUZ, 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 238 82 3 KENET-AS, KE 37215 33 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 327700 15 16 1 MoRENet, MZ 37661 12 8 4 NRaE1-AS, NG 37654 6 0 5 RwEdNet-AS, RW 327947 4 4 1 KNUST-, GH 37074 3 0 3 UG-AS, GH 37182 2 0 2 TERNET, TZ 37532 2 20 2 ZAMREN, ZM 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 2170 465 SINET-AS Research Organization of Informa 7497 447 180 24 CSTNET-AS-AP Computer Network Information 680 283 1899 249 DFN Verein zur Foerderung eines Deutschen 36914 238 82 3 KENET-AS, KE 376 200 162 149 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 1916 196 39 113 Rede Nacional de Ensino e Pesquisa, BR 786 186 1767 183 JANET Jisc Services Limited, GB 58647 180 18 2 KAGAWAU-AS Kagawa University, JP 2920 175 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 447 423 CSTNET-AS-AP Computer Network Information Cente 36914 238 235 KENET-AS, KE 5786 197 196 UPRENET, PR 58647 180 178 KAGAWAU-AS Kagawa University, JP 2920 175 168 LACOE, US 18558 140 136 NETBLK-RCOEK, US 55824 132 113 NKN-CORE-NW NKN Core Network, IN 1916 196 83 Rede Nacional de Ensino e Pesquisa, BR 1736 79 78 MU-AS, US 23024 95 74 OCDE, 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 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 /12:10 /13:16 /14:33 /15:96 /16:1537 /17:282 /18:275 /19:391 /20:521 /21:582 /22:952 /23:1073 /24:6813 /25:41 /26:67 /27:33 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 7497 263 447 CSTNET-AS-AP Computer Network Information Center of Chinese Academy of Sciences CNIC-CAS, CN 5786 196 197 UPRENET, PR 58647 149 180 KAGAWAU-AS Kagawa University, JP 36914 128 238 KENET-AS, KE 55824 124 132 NKN-CORE-NW NKN Core Network, IN 2920 123 175 LACOE, US 1736 78 79 MU-AS, US 1916 71 196 Rede Nacional de Ensino e Pesquisa, BR 21976 71 91 NJEDGE-NET, US 4538 65 125 ERX-CERNET-BKB China Education and Research Network Center, CN 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 23:1 24:3 31:1 35:3 37:8 38:2 41:162 42:6 44:4 45:22 46:4 47:1 49:8 50:1 59:8 60:6 61:2 62:5 63:2 64:18 65:4 66:21 67:32 68:2 69:10 70:2 71:1 72:7 74:17 76:39 77:3 78:3 79:10 80:6 81:24 82:2 83:6 84:6 85:25 86:1 87:1 89:11 91:38 93:13 94:2 95:2 96:5 98:2 101:1 102:4 103:238 104:73 108:2 109:1 111:16 114:1 116:7 118:18 119:23 121:27 122:8 123:8 124:42 125:1 128:30 129:26 130:92 131:51 132:18 133:154 134:74 136:195 137:40 138:58 139:5 140:25 141:3 142:17 143:15 144:24 145:2 146:120 147:21 148:9 149:12 150:9 151:3 152:79 153:6 154:14 155:40 156:134 157:13 158:25 159:116 160:29 161:10 162:18 163:58 164:11 165:8 167:7 168:52 169:6 170:10 172:1 173:7 177:1 179:10 180:15 182:3 184:5 185:39 187:1 188:11 191:1 192:1086 193:232 194:82 195:61 196:8 197:108 198:330 199:189 200:218 201:1 202:353 203:181 204:287 205:99 206:156 207:200 208:47 209:83 210:102 211:1 212:39 213:4 216:50 217:9 219:5 220:1 222:1 223:4 End of report