IPv4 R&E Routing Table Report 17:05 GMT Wed 25 May, 2022 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: 13307 Prefixes after maximum aggregation (per Origin AS): 8019 Deaggregation factor: 1.66 Unique aggregates announced (without unneeded subnets): 8847 Number of IPv4 prefixes with a valid ROA: 3358 Number of IPv4 prefixes with an invalid ROA: 0 Number of IPv4 prefixes with no ROA: 9949 Total ASes present in the Internet Routing Table: 2066 Prefixes per ASN: 6.44 Origin-only ASes present in the Internet Routing Table: 1788 Origin ASes announcing only one prefix: 859 Transit ASes present in the Internet Routing Table: 278 Transit-only ASes present in the Internet Routing Table: 33 Average AS path length visible in the Internet Routing Table: 4.5 Max AS path length visible: 15 Max AS path prepend of ASN ( 1149) 11 Prefixes from unregistered ASNs in the Routing Table: 4 Number of instances of unregistered ASNs: 4 Number of 32-bit ASNs allocated by the RIRs: 39460 Number of 32-bit ASNs visible in the Routing Table: 472 Prefixes from 32-bit ASNs in the Routing Table: 1237 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: 2 Number of addresses announced to Internet: 167364832 Equivalent to 9 /8s, 249 /16s and 200 /24s Percentage of available address space announced: 4.5 Percentage of allocated address space announced: 4.5 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: 1284 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3497 Total APNIC prefixes after maximum aggregation: 1699 APNIC Deaggregation factor: 2.06 Prefixes being announced from the APNIC address blocks: 3498 Unique aggregates announced from the APNIC address blocks: 1840 APNIC Region origin ASes present in the Internet Routing Table: 411 APNIC Prefixes per ASN: 8.51 APNIC Region origin ASes announcing only one prefix: 188 APNIC Region transit ASes present in the Internet Routing Table: 49 Average APNIC Region AS path length visible: 4.2 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: 38299872 Equivalent to 2 /8s, 72 /16s and 104 /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: 5571 Total ARIN prefixes after maximum aggregation: 3348 ARIN Deaggregation factor: 1.66 Prefixes being announced from the ARIN address blocks: 5585 Unique aggregates announced from the ARIN address blocks: 3818 ARIN Region origin ASes present in the Internet Routing Table: 885 ARIN Prefixes per ASN: 6.31 ARIN Region origin ASes announcing only one prefix: 324 ARIN Region transit ASes present in the Internet Routing Table: 110 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: 122 Number of ARIN addresses announced to Internet: 69935232 Equivalent to 4 /8s, 43 /16s and 32 /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: 2863 Total RIPE prefixes after maximum aggregation: 2431 RIPE Deaggregation factor: 1.18 Prefixes being announced from the RIPE address blocks: 2852 Unique aggregates announced from the RIPE address blocks: 2487 RIPE Region origin ASes present in the Internet Routing Table: 562 RIPE Prefixes per ASN: 5.07 RIPE Region origin ASes announcing only one prefix: 263 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: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 118 Number of RIPE addresses announced to Internet: 55200640 Equivalent to 3 /8s, 74 /16s and 75 /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: 910 Total LACNIC prefixes after maximum aggregation: 441 LACNIC Deaggregation factor: 2.06 Prefixes being announced from the LACNIC address blocks: 908 Unique aggregates announced from the LACNIC address blocks: 545 LACNIC Region origin ASes present in the Internet Routing Table: 131 LACNIC Prefixes per ASN: 6.93 LACNIC Region origin ASes announcing only one prefix: 61 LACNIC Region transit ASes present in the Internet Routing Table: 20 Average LACNIC Region AS path length visible: 4.9 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 52 Number of LACNIC addresses announced to Internet: 3023616 Equivalent to 0 /8s, 46 /16s and 35 /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: 462 Total AfriNIC prefixes after maximum aggregation: 96 AfriNIC Deaggregation factor: 4.81 Prefixes being announced from the AfriNIC address blocks: 462 Unique aggregates announced from the AfriNIC address blocks: 155 AfriNIC Region origin ASes present in the Internet Routing Table: 40 AfriNIC Prefixes per ASN: 11.55 AfriNIC Region origin ASes announcing only one prefix: 23 AfriNIC Region transit ASes present in the Internet Routing Table: 8 Average AfriNIC Region AS path length visible: 4.2 Max AfriNIC Region AS path length visible: 9 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 23 Number of AfriNIC addresses announced to Internet: 904960 Equivalent to 0 /8s, 13 /16s and 207 /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 578 2140 456 SINET-AS Research Organization of Infor 7497 427 177 19 CSTNET-AS-AP Computer Network Informati 4538 416 4192 73 ERX-CERNET-BKB China Education and Rese 7575 177 330 123 AARNET-AS-AP Australian Academic and Re 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 55824 114 18 10 NKN-CORE-NW NKN Core Network, IN 2697 53 3 32 ERX-ERNET-AS Education and Research Net 45773 48 3 5 HECPERN-AS-PK PERN AS Content Servie Pr 132524 48 9 11 TIFR-AS Tata Institute of Fundamental R 9270 34 5 6 APAN-KR-AS National Infomation Society 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 376 202 178 151 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 2152 154 507 89 CSUNET-NW, US 18558 131 18 4 NETBLK-RCOEK, US 270 120 329 88 AS270, US 23024 113 7 19 OCDE, US 2920 110 34 6 LACOE, US 21976 85 51 18 NJEDGE-NET, US 1736 80 16 1 MU-AS, US 22742 68 53 33 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 680 284 1967 251 DFN Verein zur Foerderung eines Deutsch 786 186 1774 183 JANET Jisc Services Limited, GB 559 115 550 106 SWITCH Peering requests: peering@switch 1103 99 1520 86 SURFNET-NL SURFnet, The Netherlands, NL 2614 96 27 76 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 2200 63 583 58 FR-RENATER Reseau National de telecommu 1930 58 81 53 RCCN Fundacao para a Ciencia e a Tecnol 1653 51 167 48 SUNET SUNET Swedish University Network, 1741 39 149 18 FUNETAS, FI 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 153 180 87 Rede Nacional de Ensino e Pesquisa, BR 11340 94 24 54 Red Universitaria Nacional, CL 1251 60 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 4270 44 16 1 Red de Interconexion Universitaria, AR 61468 41 3 15 CEDIA, EC 20191 31 16 1 Pontificia Universidad Catolica de Chil 28571 27 5 19 UNIVERSIDADE DE SAO PAULO, BR 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 36914 215 82 3 KENET-AS, KE 2561 67 4 32 EUN, EG 327687 38 28 3 RENU, UG 327700 33 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37182 12 8 1 TERNET, TZ 37074 10 7 7 UG-AS, GH 37654 10 1 6 RwEdNet-AS, RW 31960 5 1 1 EMUNET, MZ 30983 4 4 1 MARWAN-AS, MA 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 578 2140 456 SINET-AS Research Organization of Infor 7497 427 177 19 CSTNET-AS-AP Computer Network Informati 4538 416 4192 73 ERX-CERNET-BKB China Education and Rese 680 284 1967 251 DFN Verein zur Foerderung eines Deutsch 36914 215 82 3 KENET-AS, KE 376 202 178 151 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 786 186 1774 183 JANET Jisc Services Limited, GB 7575 177 330 123 AARNET-AS-AP Australian Academic and Re 58647 175 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 7497 427 408 CSTNET-AS-AP Computer Network Information Cente 4538 416 343 ERX-CERNET-BKB China Education and Research Net 36914 215 212 KENET-AS, KE 5786 200 199 UPRENET, PR 58647 175 173 KAGAWAU-AS Kagawa University, JP 18558 131 127 NETBLK-RCOEK, US 55824 114 104 NKN-CORE-NW NKN Core Network, IN 2920 110 104 LACOE, US 23024 113 94 OCDE, US 1736 80 79 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 22063 UNALLOCATED 153.10.0.0/16 2152 CSUNET-NW, US 22226 UNALLOCATED 156.1.0.0/16 2152 CSUNET-NW, US 395514 UNALLOCATED 205.213.88.0/24 2381 WISCNET1-AS, US 394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US 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 192.31.196.0/24 Origin: 112 UNASSIGNED 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 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 /13:17 /14:34 /15:101 /16:1625 /17:258 /18:286 /19:409 /20:614 /21:666 /22:1076 /23:1130 /24:6911 /25:50 /26:46 /27:72 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 202 215 KENET-AS, KE 23024 53 113 OCDE, US 32440 46 52 LONI, US 25977 29 43 HCCS, US 327700 29 33 MoRENet, MZ 31638 21 21 ASN-LEPIDA, IT 3233 19 29 ICI-ROTLD Romanian National R&D Network, RO 1916 18 153 Rede Nacional de Ensino e Pesquisa, BR 2614 18 96 ROEDUNET, RO 22742 18 68 CT-EDU-NET, US 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 14:85 23:2 24:3 31:1 35:1 37:6 38:6 40:1 41:118 42:11 44:4 45:22 46:6 49:10 58:13 59:20 60:4 61:2 62:6 63:2 64:22 66:4 67:40 68:1 69:11 70:2 72:9 74:11 76:2 77:7 78:3 79:10 80:7 81:27 82:1 83:6 84:6 85:23 86:4 87:1 88:1 89:10 91:32 93:10 94:2 95:4 96:5 101:6 102:11 103:208 104:68 108:3 109:3 110:2 111:16 114:1 116:7 118:21 119:22 121:31 122:9 123:8 124:39 125:2 128:67 129:31 130:82 131:75 132:50 133:145 134:66 136:193 137:63 138:9 139:4 140:32 141:1 142:21 143:20 144:23 145:2 146:114 147:19 148:7 149:12 150:9 151:2 152:16 153:6 154:6 155:34 156:65 157:19 158:41 159:115 160:25 161:17 162:10 163:56 164:15 165:18 166:1 167:11 168:56 169:9 170:44 172:2 173:6 175:19 177:7 179:8 180:17 181:1 182:4 184:2 185:26 186:3 187:3 188:12 189:5 190:32 191:2 192:1144 193:274 194:95 195:73 196:22 197:122 198:343 199:185 200:197 201:23 202:358 203:190 204:283 205:137 206:142 207:138 208:55 209:91 210:93 211:13 212:21 213:2 216:50 217:10 218:1 219:12 220:2 222:11 223:4 End of report