IPv4 R&E Routing Table Report 22:20 GMT Fri 08 Nov, 2024 IPv4 BGP Table (R&E) as seen at ESnet. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ESnet/ Analysis Summary ---------------- BGP routing table entries examined: 19367 Prefixes after maximum aggregation (per Origin AS): 10706 Deaggregation factor: 1.81 Unique aggregates announced (without unneeded subnets): 11875 Number of IPv4 prefixes with a valid ROA: 7326 Number of IPv4 prefixes with an invalid ROA: 2 Number of IPv4 prefixes with no ROA: 12039 Total ASes present in the Internet Routing Table: 2805 Prefixes per ASN: 6.90 Origin-only ASes present in the Internet Routing Table: 2433 Origin ASes announcing only one prefix: 1083 Transit ASes present in the Internet Routing Table: 372 Transit-only ASes present in the Internet Routing Table: 67 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.9 Max AS path length visible: 24 Max AS path prepend of ASN (138136) 20 Prefixes from unregistered ASNs in the Routing Table: 2 Number of instances of unregistered ASNs: 2 Number of 32-bit ASNs allocated by the RIRs: 45808 Number of 32-bit ASNs visible in the Routing Table: 694 Prefixes from 32-bit ASNs in the Routing Table: 1884 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: 172950784 Equivalent to 10 /8s, 79 /16s and 5 /24s Percentage of available address space announced: 4.7 Percentage of allocated address space announced: 3.7 Percentage of available address space allocated: 127.5 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 6893 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4585 Total APNIC prefixes after maximum aggregation: 2255 APNIC Deaggregation factor: 2.03 Prefixes being announced from the APNIC address blocks: 466 Unique aggregates announced from the APNIC address blocks: 387 APNIC Region origin ASes present in the Internet Routing Table: 572 APNIC Prefixes per ASN: 0.81 APNIC Region origin ASes announcing only one prefix: 242 APNIC Region transit ASes present in the Internet Routing Table: 58 Average APNIC Region AS path length visible: 4.0 Max APNIC Region AS path length visible: 24 Number of APNIC region 32-bit ASNs visible in the Routing Table: 227 Number of APNIC addresses announced to Internet: 6669312 Equivalent to 0 /8s, 101 /16s and 196 /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: 8776 Total ARIN prefixes after maximum aggregation: 4921 ARIN Deaggregation factor: 1.78 Prefixes being announced from the ARIN address blocks: 4772 Unique aggregates announced from the ARIN address blocks: 3177 ARIN Region origin ASes present in the Internet Routing Table: 1296 ARIN Prefixes per ASN: 3.68 ARIN Region origin ASes announcing only one prefix: 458 ARIN Region transit ASes present in the Internet Routing Table: 155 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 218 Number of ARIN addresses announced to Internet: 26935040 Equivalent to 1 /8s, 154 /16s and 255 /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: 3521 Total RIPE prefixes after maximum aggregation: 2834 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 867 Unique aggregates announced from the RIPE address blocks: 825 RIPE Region origin ASes present in the Internet Routing Table: 670 RIPE Prefixes per ASN: 1.29 RIPE Region origin ASes announcing only one prefix: 301 RIPE Region transit ASes present in the Internet Routing Table: 106 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: 159 Number of RIPE addresses announced to Internet: 10424064 Equivalent to 0 /8s, 159 /16s and 15 /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: 1425 Total LACNIC prefixes after maximum aggregation: 523 LACNIC Deaggregation factor: 2.72 Prefixes being announced from the LACNIC address blocks: 244 Unique aggregates announced from the LACNIC address blocks: 191 LACNIC Region origin ASes present in the Internet Routing Table: 148 LACNIC Prefixes per ASN: 1.65 LACNIC Region origin ASes announcing only one prefix: 52 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 4.4 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 63 Number of LACNIC addresses announced to Internet: 1049856 Equivalent to 0 /8s, 16 /16s and 5 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + ERX transfers LACNIC Address Blocks 128/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 1058 Total AfriNIC prefixes after maximum aggregation: 171 AfriNIC Deaggregation factor: 6.19 Prefixes being announced from the AfriNIC address blocks: 83 Unique aggregates announced from the AfriNIC address blocks: 50 AfriNIC Region origin ASes present in the Internet Routing Table: 50 AfriNIC Prefixes per ASN: 1.66 AfriNIC Region origin ASes announcing only one prefix: 30 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 19 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 27 Number of AfriNIC addresses announced to Internet: 608768 Equivalent to 0 /8s, 9 /16s and 74 /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 590 2170 464 SINET-AS Research Organization of Informa 7497 447 180 24 CSTNET-AS-AP Computer Network Information 1237 191 74 145 KREONET-AS-KR KISTI, KR 58647 180 18 2 KAGAWAU-AS Kagawa University, JP 7575 169 329 113 AARNET-AS-AP Australian Academic and Rese 55824 132 18 19 NKN-CORE-NW NKN Core Network, IN 4538 111 2384 69 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 69 37 10 UNINET-AS-AP UNINET-, TH 2697 60 4 35 ERX-ERNET-AS Education and Research Netwo Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 2152 508 507 97 CENIC-2152, US 2920 229 44 49 LACOE, US 668 204 648 173 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 18558 141 18 5 NETBLK-RCOEK, US 81 133 469 34 NCREN, US 23024 95 7 21 OCDE, US 237 89 542 54 MERIT-AS-14, US 21976 89 50 15 NJEDGE-NET, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 281 1899 248 DFN Verein zur Foerderung eines Deutschen 786 186 1767 183 JANET Jisc Services Limited, GB 8895 132 24 4 ISU Internet Services Unit ISU, SA 559 114 533 104 SWITCH Peering requests: peering@switch.c 1103 95 1247 82 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 553 78 462 78 BELWUE BelWue-Koordination, DE 3267 77 26 67 NIKS, RU Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 217 178 42 Rede Nacional de Ensino e Pesquisa, BR 28391 154 10 68 Universidad Juarez Autonoma de Tabasco, M 11340 110 25 53 Red Universitaria Nacional, CL 271640 66 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 61468 50 5 17 CEDIA, EC 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 4270 47 16 1 Red de Interconexion Universitaria, AR 2715 45 99 34 Fundacao Carlos Chagas Filho de Amparo a 28614 38 2 2 Fundacao Universidade Regional de Blumena 1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 451 82 3 KENET-AS, KE 2018 381 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37215 33 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37074 15 8 2 UG-AS, GH 327700 15 16 1 MoRENet, MZ 37661 12 8 4 NRaE1-AS, NG 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 590 2170 464 SINET-AS Research Organization of Informa 2152 508 507 97 CENIC-2152, US 36914 451 82 3 KENET-AS, KE 7497 447 180 24 CSTNET-AS-AP Computer Network Information 2018 381 319 71 TENET-1, ZA 680 281 1899 248 DFN Verein zur Foerderung eines Deutschen 2920 229 44 49 LACOE, US 1916 217 178 42 Rede Nacional de Ensino e Pesquisa, BR 668 204 648 173 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 451 448 KENET-AS, KE 7497 447 423 CSTNET-AS-AP Computer Network Information Cente 2152 508 411 CENIC-2152, US 2018 381 310 TENET-1, ZA 5786 197 196 UPRENET, PR 2920 229 180 LACOE, US 58647 180 178 KAGAWAU-AS Kagawa University, JP 1916 217 175 Rede Nacional de Ensino e Pesquisa, BR 18558 141 136 NETBLK-RCOEK, US 8895 132 128 ISU Internet Services Unit ISU, SA Complete listing at https://bgp.nsrc.org/REN/ESnet/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US 22272 UNALLOCATED 206.208.24.0/21 6325 ILLINOIS-CENTURY, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS 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/ESnet/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 /9:0 /10:0 /11:0 /12:0 /13:0 /14:33 /15:118 /16:1983 /17:427 /18:455 /19:581 /20:873 /21:889 /22:1500 /23:1626 /24:10882 /25:0 /26:0 /27:0 /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 28391 154 154 Universidad Juarez Autonoma de Tabasco, MX 58647 149 180 KAGAWAU-AS Kagawa University, JP 36914 128 451 KENET-AS, KE 55824 124 132 NKN-CORE-NW NKN Core Network, IN 2018 123 381 TENET-1, ZA 2920 123 229 LACOE, US 2152 107 508 CENIC-2152, US 1736 78 79 MU-AS, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:15 6:4 8:5 12:2 14:92 18:43 23:10 24:3 31:1 35:9 37:8 38:11 40:1 41:162 42:11 44:5 45:45 46:4 47:1 49:8 50:4 52:1 59:19 60:6 61:3 62:8 63:38 64:46 65:18 66:53 67:44 68:20 69:18 70:2 71:1 72:7 74:54 76:40 77:10 78:3 79:10 80:12 81:25 82:7 83:7 84:5 85:45 86:2 87:1 89:11 91:40 92:2 93:13 94:2 95:2 96:5 97:1 98:2 101:1 102:11 103:325 104:75 107:2 108:6 109:4 111:16 113:2 114:24 116:7 117:61 118:32 119:23 121:27 122:8 123:8 124:42 125:5 128:55 129:36 130:97 131:60 132:65 133:154 134:109 136:196 137:98 138:58 139:6 140:33 141:3 142:52 143:26 144:30 145:2 146:137 147:58 148:196 149:12 150:40 151:11 152:135 153:13 154:39 155:59 156:133 157:25 158:30 159:118 160:30 161:17 162:31 163:62 164:10 165:49 166:2 167:10 168:120 169:7 170:97 171:1 172:2 173:7 174:1 175:16 177:5 179:12 180:15 181:1 182:3 184:2 185:54 186:3 187:20 188:13 189:3 190:18 191:13 192:1410 193:263 194:118 195:66 196:147 197:323 198:546 199:284 200:329 201:36 202:631 203:435 204:410 205:177 206:210 207:307 208:67 209:160 210:217 211:3 212:164 213:6 214:8 216:89 217:9 218:21 219:5 220:17 222:2 223:4 End of report