IPv4 R&E Routing Table Report 17:05 GMT Tue 21 May, 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: 12076 Prefixes after maximum aggregation (per Origin AS): 7395 Deaggregation factor: 1.63 Unique aggregates announced (without unneeded subnets): 8149 Number of IPv4 prefixes with a valid ROA: 3971 Number of IPv4 prefixes with an invalid ROA: 0 Number of IPv4 prefixes with no ROA: 8105 Total ASes present in the Internet Routing Table: 1869 Prefixes per ASN: 6.46 Origin-only ASes present in the Internet Routing Table: 1603 Origin ASes announcing only one prefix: 759 Transit ASes present in the Internet Routing Table: 266 Transit-only ASes present in the Internet Routing Table: 56 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: 1 Number of instances of unregistered ASNs: 1 Number of 32-bit ASNs allocated by the RIRs: 44495 Number of 32-bit ASNs visible in the Routing Table: 439 Prefixes from 32-bit ASNs in the Routing Table: 1101 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: 153755136 Equivalent to 9 /8s, 42 /16s and 30 /24s Percentage of available address space announced: 4.2 Percentage of allocated address space announced: 4.2 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: 1256 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3138 Total APNIC prefixes after maximum aggregation: 1669 APNIC Deaggregation factor: 1.88 Prefixes being announced from the APNIC address blocks: 3138 Unique aggregates announced from the APNIC address blocks: 1783 APNIC Region origin ASes present in the Internet Routing Table: 400 APNIC Prefixes per ASN: 7.84 APNIC Region origin ASes announcing only one prefix: 184 APNIC Region transit ASes present in the Internet Routing Table: 43 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: 161 Number of APNIC addresses announced to Internet: 37735488 Equivalent to 2 /8s, 63 /16s and 204 /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: 5129 Total ARIN prefixes after maximum aggregation: 2987 ARIN Deaggregation factor: 1.72 Prefixes being announced from the ARIN address blocks: 5138 Unique aggregates announced from the ARIN address blocks: 3402 ARIN Region origin ASes present in the Internet Routing Table: 761 ARIN Prefixes per ASN: 6.75 ARIN Region origin ASes announcing only one prefix: 276 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: 123 Number of ARIN addresses announced to Internet: 59111904 Equivalent to 3 /8s, 133 /16s and 249 /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: 2913 Total RIPE prefixes after maximum aggregation: 2430 RIPE Deaggregation factor: 1.20 Prefixes being announced from the RIPE address blocks: 2905 Unique aggregates announced from the RIPE address blocks: 2520 RIPE Region origin ASes present in the Internet Routing Table: 564 RIPE Prefixes per ASN: 5.15 RIPE Region origin ASes announcing only one prefix: 258 RIPE Region transit ASes present in the Internet Routing Table: 82 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: 54875520 Equivalent to 3 /8s, 69 /16s and 85 /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: 483 Total LACNIC prefixes after maximum aggregation: 266 LACNIC Deaggregation factor: 1.82 Prefixes being announced from the LACNIC address blocks: 482 Unique aggregates announced from the LACNIC address blocks: 380 LACNIC Region origin ASes present in the Internet Routing Table: 63 LACNIC Prefixes per ASN: 7.65 LACNIC Region origin ASes announcing only one prefix: 26 LACNIC Region transit ASes present in the Internet Routing Table: 18 Average LACNIC Region AS path length visible: 4.8 Max LACNIC Region AS path length visible: 10 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 16 Number of LACNIC addresses announced to Internet: 1371232 Equivalent to 0 /8s, 20 /16s and 236 /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: 412 Total AfriNIC prefixes after maximum aggregation: 42 AfriNIC Deaggregation factor: 9.81 Prefixes being announced from the AfriNIC address blocks: 412 Unique aggregates announced from the AfriNIC address blocks: 63 AfriNIC Region origin ASes present in the Internet Routing Table: 24 AfriNIC Prefixes per ASN: 17.17 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: 10 Number of AfriNIC addresses announced to Internet: 660736 Equivalent to 0 /8s, 10 /16s and 21 /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 596 2162 465 SINET-AS Research Organization of Infor 7497 443 180 24 CSTNET-AS-AP Computer Network Informati 4538 187 4193 75 ERX-CERNET-BKB China Education and Rese 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 172 329 115 AARNET-AS-AP Australian Academic and Re 55824 129 19 18 NKN-CORE-NW NKN Core Network, IN 2697 58 4 34 ERX-ERNET-AS Education and Research Net 132524 44 9 11 TIFR-AS Tata Institute of Fundamental R 24361 33 56 17 CNGI-NJ-IX-AS-AP CERNET2 IX at Southeas 23767 29 2 9 A-STAR-AS-AP A-STAR, SG 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 376 202 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2920 177 34 7 LACOE, US 2152 150 507 94 CSUNET-NW, US 18558 140 18 4 NETBLK-RCOEK, US 270 134 334 95 AS270, US 23024 108 7 22 OCDE, US 237 87 543 51 MERIT-AS-14, US 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 680 282 1899 249 DFN Verein zur Foerderung eines Deutsch 786 186 1767 184 JANET Jisc Services Limited, GB 559 113 533 103 SWITCH Peering requests: peering@switch 1103 95 1503 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 27 73 ROEDUNET, RO 137 82 677 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 11340 108 25 52 Red Universitaria Nacional, CL 1916 85 31 45 Rede Nacional de Ensino e Pesquisa, BR 1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 61468 29 2 5 CEDIA, EC 20191 27 2 23 Pontificia Universidad Catolica de Chil 3597 20 16 2 Fundacion InnovaT, AR 28571 19 40 18 UNIVERSIDADE DE SAO PAULO, BR 27790 18 2 2 Universidad Nacional de Cordoba, AR 52888 15 7 8 UNIVERSIDADE FEDERAL DE SAO CARLOS, BR 278 9 16 4 Universidad Nacional Autonoma de Mexico 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 253 82 3 KENET-AS, KE 327700 47 16 1 MoRENet, MZ 37215 36 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37654 14 1 8 RwEdNet-AS, RW 37182 12 8 1 TERNET, TZ 31960 5 1 1 EMUNET, MZ 328903 4 0 1 RITER, CI 37532 2 20 2 ZAMREN, ZM 3208 1 2 1 ARN, DZ 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 596 2162 465 SINET-AS Research Organization of Infor 7497 443 180 24 CSTNET-AS-AP Computer Network Informati 680 282 1899 249 DFN Verein zur Foerderung eines Deutsch 36914 253 82 3 KENET-AS, KE 376 202 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 4538 187 4193 75 ERX-CERNET-BKB China Education and Rese 786 186 1767 184 JANET Jisc Services Limited, GB 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 2920 177 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 443 419 CSTNET-AS-AP Computer Network Information Cente 36914 253 250 KENET-AS, KE 5786 198 197 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 2920 177 170 LACOE, US 18558 140 136 NETBLK-RCOEK, US 4538 187 112 ERX-CERNET-BKB China Education and Research Net 55824 129 111 NKN-CORE-NW NKN Core Network, IN 23024 108 86 OCDE, US 1736 79 78 MU-AS, 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 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 /16:1493 /17:257 /18:257 /19:354 /20:521 /21:546 /22:916 /23:1033 /24:6393 /25:36 /26:46 /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 240 253 KENET-AS, KE 23024 51 108 OCDE, US 32440 50 64 LONI, US 327700 41 47 MoRENet, MZ 200521 33 56 SEAP-AGE, ES 37215 30 36 MAREN, MW 25977 27 30 HCCS, US 31638 21 21 ASN-LEPIDA, IT 61468 20 29 CEDIA, EC 3233 19 29 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 14:90 24:3 31:1 35:3 38:2 41:203 42:12 44:4 45:18 46:5 49:9 50:1 58:16 59:2 60:6 62:6 63:2 64:13 65:1 66:9 67:32 68:1 69:9 70:2 72:7 74:12 76:4 77:4 78:3 79:10 80:8 81:24 82:2 83:6 84:6 85:24 87:1 89:11 91:36 93:5 94:2 95:2 96:5 101:5 102:5 103:201 104:63 108:2 109:5 114:1 118:2 119:20 121:12 123:8 124:41 128:60 129:22 130:72 131:42 132:17 133:157 134:74 136:196 137:25 138:57 139:4 140:8 141:3 142:20 143:12 144:23 145:2 146:119 147:20 148:7 149:11 150:6 151:3 152:67 153:6 154:8 155:25 156:136 157:9 158:30 159:114 160:28 161:12 162:8 163:53 164:10 165:8 167:7 168:28 169:6 170:10 172:2 173:5 175:18 176:8 177:2 179:6 180:14 182:1 184:5 185:41 186:1 187:1 188:11 190:16 191:1 192:1084 193:227 194:86 195:60 196:14 197:116 198:303 199:180 200:113 201:5 202:349 203:191 204:297 205:98 206:122 207:173 208:16 209:82 210:88 211:2 212:42 213:3 216:48 217:10 219:4 220:1 222:2 223:14 End of report