IPv4 R&E Routing Table Report 17:05 GMT Thu 20 Jan, 2022 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: 14094 Prefixes after maximum aggregation (per Origin AS): 8353 Deaggregation factor: 1.69 Unique aggregates announced (without unneeded subnets): 9137 Number of IPv4 prefixes with a valid ROA: 3156 Number of IPv4 prefixes with an invalid ROA: 0 Number of IPv4 prefixes with no ROA: 10938 Total ASes present in the Internet Routing Table: 2139 Prefixes per ASN: 6.59 Origin-only ASes present in the Internet Routing Table: 1846 Origin ASes announcing only one prefix: 889 Transit ASes present in the Internet Routing Table: 293 Transit-only ASes present in the Internet Routing Table: 36 Average AS path length visible in the Internet Routing Table: 4.5 Max AS path length visible: 14 Max AS path prepend of ASN ( 5474) 11 Prefixes from unregistered ASNs in the Routing Table: 32 Number of instances of unregistered ASNs: 32 Number of 32-bit ASNs allocated by the RIRs: 38333 Number of 32-bit ASNs visible in the Routing Table: 475 Prefixes from 32-bit ASNs in the Routing Table: 1298 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 1 Number of addresses announced to Internet: 170007232 Equivalent to 10 /8s, 34 /16s and 26 /24s Percentage of available address space announced: 4.6 Percentage of allocated address space announced: 4.6 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.5 Total number of prefixes smaller than registry allocations: 1560 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3604 Total APNIC prefixes after maximum aggregation: 1952 APNIC Deaggregation factor: 1.85 Prefixes being announced from the APNIC address blocks: 3605 Unique aggregates announced from the APNIC address blocks: 2113 APNIC Region origin ASes present in the Internet Routing Table: 433 APNIC Prefixes per ASN: 8.33 APNIC Region origin ASes announcing only one prefix: 200 APNIC Region transit ASes present in the Internet Routing Table: 47 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 157 Number of APNIC addresses announced to Internet: 38882368 Equivalent to 2 /8s, 81 /16s and 76 /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, 131072-151865 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: 5486 Total ARIN prefixes after maximum aggregation: 3275 ARIN Deaggregation factor: 1.68 Prefixes being announced from the ARIN address blocks: 5496 Unique aggregates announced from the ARIN address blocks: 3684 ARIN Region origin ASes present in the Internet Routing Table: 848 ARIN Prefixes per ASN: 6.48 ARIN Region origin ASes announcing only one prefix: 307 ARIN Region transit ASes present in the Internet Routing Table: 114 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: 112 Number of ARIN addresses announced to Internet: 69276864 Equivalent to 4 /8s, 33 /16s and 20 /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, 393216-401308 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: 3147 Total RIPE prefixes after maximum aggregation: 2526 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3139 Unique aggregates announced from the RIPE address blocks: 2618 RIPE Region origin ASes present in the Internet Routing Table: 621 RIPE Prefixes per ASN: 5.05 RIPE Region origin ASes announcing only one prefix: 299 RIPE Region transit ASes present in the Internet Routing Table: 94 Average RIPE Region AS path length visible: 3.7 Max RIPE Region AS path length visible: 14 Number of RIPE region 32-bit ASNs visible in the Routing Table: 122 Number of RIPE addresses announced to Internet: 55607264 Equivalent to 3 /8s, 80 /16s and 127 /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 196608-213403 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: 1022 Total LACNIC prefixes after maximum aggregation: 422 LACNIC Deaggregation factor: 2.42 Prefixes being announced from the LACNIC address blocks: 1020 Unique aggregates announced from the LACNIC address blocks: 487 LACNIC Region origin ASes present in the Internet Routing Table: 143 LACNIC Prefixes per ASN: 7.13 LACNIC Region origin ASes announcing only one prefix: 62 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 5.0 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 59 Number of LACNIC addresses announced to Internet: 3506144 Equivalent to 0 /8s, 53 /16s and 127 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + 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: 803 Total AfriNIC prefixes after maximum aggregation: 157 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 833 Unique aggregates announced from the AfriNIC address blocks: 234 AfriNIC Region origin ASes present in the Internet Routing Table: 49 AfriNIC Prefixes per ASN: 17.00 AfriNIC Region origin ASes announcing only one prefix: 21 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 3.7 Max AfriNIC Region AS path length visible: 7 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 25 Number of AfriNIC addresses announced to Internet: 2734336 Equivalent to 0 /8s, 41 /16s and 185 /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 576 2156 457 SINET-AS Research Organization of Infor 7497 426 177 19 CSTNET-AS-AP Computer Network Informati 1237 188 74 135 KREONET-AS-KR KISTI, KR 58647 178 18 2 KAGAWAU-AS Kagawa University, JP 7575 176 330 123 AARNET-AS-AP Australian Academic and Re 4538 175 4192 72 ERX-CERNET-BKB China Education and Rese 55824 114 18 10 NKN-CORE-NW NKN Core Network, IN 2697 54 3 32 ERX-ERNET-AS Education and Research Net 132524 49 9 11 TIFR-AS Tata Institute of Fundamental R 45773 47 3 5 HECPERN-AS-PK PERN AS Content Servie Pr 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 200 16 1 UPRENET, PR 2152 144 507 86 CSUNET-NW, US 18558 136 18 4 NETBLK-RCOEK, US 270 119 329 88 AS270, US 2920 111 34 6 LACOE, US 21976 85 51 18 NJEDGE-NET, US 1736 80 16 1 MU-AS, US 3477 72 71 42 NOAA-NWAVE, US 22742 69 53 34 CT-EDU-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 680 279 1950 245 DFN Verein zur Foerderung eines Deutsch 786 185 1774 182 JANET Jisc Services Limited, GB 8895 182 24 4 ISU Internet Services Unit ISU, SA 559 115 550 106 SWITCH Peering requests: peering@switch 1103 98 1520 85 SURFNET-NL SURFnet, The Netherlands, NL 137 82 677 77 ASGARR Consortium GARR, IT 2200 67 647 61 FR-RENATER Reseau National de telecommu 2614 58 32 55 ROEDUNET, RO 1930 57 81 52 RCCN Fundacao para a Ciencia e a Tecnol 1653 53 167 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 1916 200 203 43 Rede Nacional de Ensino e Pesquisa, BR 11340 95 24 55 Red Universitaria Nacional, CL 1251 65 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 4270 44 16 1 Red de Interconexion Universitaria, AR 61468 41 3 15 CEDIA, EC 28571 37 26 15 UNIVERSIDADE DE SAO PAULO, BR 20191 31 16 1 Pontificia Universidad Catolica de Chil 271640 27 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 3597 23 2 17 Fundacion InnovaT, AR 28068 21 2 2 Universidad Nacional de San Luis, AR 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 2018 320 251 66 TENET-1, ZA 36914 201 82 3 KENET-AS, KE 8094 50 48 4 PUKNET, ZA 327700 45 16 1 MoRENet, MZ 327687 39 28 3 RENU, UG 6879 24 2 9 ENSTINET-, EG 37501 11 49 6 UOFS, ZA 37074 10 7 7 UG-AS, GH 37182 10 8 1 TERNET, TZ 36982 8 33 8 UCT, ZA 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 576 2156 457 SINET-AS Research Organization of Infor 7497 426 177 19 CSTNET-AS-AP Computer Network Informati 2018 320 251 66 TENET-1, ZA 680 279 1950 245 DFN Verein zur Foerderung eines Deutsch 376 201 162 150 RISQ-AS, CA 36914 201 82 3 KENET-AS, KE 1916 200 203 43 Rede Nacional de Ensino e Pesquisa, BR 5786 200 16 1 UPRENET, PR 1237 188 74 135 KREONET-AS-KR KISTI, KR 786 185 1774 182 JANET Jisc Services Limited, GB 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 426 407 CSTNET-AS-AP Computer Network Information Cente 2018 320 254 TENET-1, ZA 5786 200 199 UPRENET, PR 36914 201 198 KENET-AS, KE 8895 182 178 ISU Internet Services Unit ISU, SA 58647 178 176 KAGAWAU-AS Kagawa University, JP 1916 200 157 Rede Nacional de Ensino e Pesquisa, BR 18558 136 132 NETBLK-RCOEK, US 2920 111 105 LACOE, US 55824 114 104 NKN-CORE-NW NKN Core Network, IN 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 65254 PRIVATE 137.215.0.0/16 2018 TENET-1, ZA 65254 PRIVATE 137.215.0.0/17 2018 TENET-1, ZA 65254 PRIVATE 137.215.128.0/17 2018 TENET-1, ZA 65530 PRIVATE 146.141.0.0/16 2018 TENET-1, ZA 64786 PRIVATE 146.232.0.0/17 2018 TENET-1, ZA 64786 PRIVATE 146.232.128.0/17 2018 TENET-1, ZA 22063 UNALLOCATED 153.10.0.0/16 2152 CSUNET-NW, US 65102 PRIVATE 154.114.10.0/23 2018 TENET-1, ZA 65102 PRIVATE 154.114.37.0/24 2018 TENET-1, ZA 65100 PRIVATE 154.115.0.0/21 2018 TENET-1, ZA Complete listing at https://bgp.nsrc.org/REN/ASREN/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 1103 SURFNET-NL SURFnet, The Netherlands, NL Complete listing at https://bgp.nsrc.org/REN/ASREN/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Transit: 20965 GEANT The GEANT IP Service, 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 /10:2 /11:0 /12:9 /13:16 /14:33 /15:102 /16:1638 /17:294 /18:315 /19:451 /20:653 /21:725 /22:1116 /23:1191 /24:7368 /25:70 /26:55 /27:55 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 188 201 KENET-AS, KE 8895 177 182 ISU Internet Services Unit ISU, SA 23024 53 56 OCDE, US 327700 39 45 MoRENet, MZ 25977 29 32 HCCS, US 200521 29 49 SEAP-AGE, ES 1916 26 200 Rede Nacional de Ensino e Pesquisa, BR 30220 25 25 SWTELCOOP, US 31638 21 21 ASN-LEPIDA, IT 2614 20 58 ROEDUNET, RO Complete listing at https://bgp.nsrc.org/REN/ASREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:15 8:2 12:1 14:85 23:2 24:3 31:1 37:6 38:3 40:1 41:123 42:9 44:4 45:26 46:6 49:8 58:7 59:3 60:4 61:2 62:6 63:4 64:12 66:23 67:34 68:1 69:16 72:10 74:8 76:6 77:7 78:3 79:10 80:9 81:27 82:2 83:7 84:3 85:25 86:7 87:1 88:1 89:10 91:44 93:18 94:2 95:4 96:5 101:4 102:12 103:198 104:5 106:1 108:3 109:10 110:3 111:16 112:4 114:17 116:5 117:2 119:21 121:27 124:39 125:1 128:68 129:33 130:84 131:73 132:50 133:140 134:90 136:191 137:49 138:8 139:4 140:33 141:2 142:24 143:28 144:26 145:2 146:123 147:25 148:7 149:13 150:15 151:6 152:18 153:6 154:25 155:46 156:67 157:26 158:38 159:115 160:25 161:16 162:10 163:60 164:19 165:17 166:1 167:11 168:79 169:8 170:46 172:1 173:1 175:19 176:8 177:7 178:1 179:8 180:20 182:6 184:1 185:35 186:3 187:1 188:13 189:2 190:42 191:1 192:1164 193:179 194:107 195:58 196:148 197:114 198:359 199:191 200:220 201:23 202:349 203:283 204:283 205:134 206:145 207:136 208:47 209:95 210:177 211:1 212:172 213:3 216:51 217:14 218:5 219:11 220:9 222:5 223:3 End of report