IPv4 R&E Routing Table Report 17:05 GMT Sun 22 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: 13115 Prefixes after maximum aggregation (per Origin AS): 8034 Deaggregation factor: 1.63 Unique aggregates announced (without unneeded subnets): 8865 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: 9757 Total ASes present in the Internet Routing Table: 2072 Prefixes per ASN: 6.33 Origin-only ASes present in the Internet Routing Table: 1791 Origin ASes announcing only one prefix: 859 Transit ASes present in the Internet Routing Table: 281 Transit-only ASes present in the Internet Routing Table: 34 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: 39454 Number of 32-bit ASNs visible in the Routing Table: 475 Prefixes from 32-bit ASNs in the Routing Table: 1238 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: 167387616 Equivalent to 9 /8s, 250 /16s and 33 /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: 1312 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3274 Total APNIC prefixes after maximum aggregation: 1707 APNIC Deaggregation factor: 1.92 Prefixes being announced from the APNIC address blocks: 3275 Unique aggregates announced from the APNIC address blocks: 1853 APNIC Region origin ASes present in the Internet Routing Table: 416 APNIC Prefixes per ASN: 7.87 APNIC Region origin ASes announcing only one prefix: 191 APNIC Region transit ASes present in the Internet Routing Table: 51 Average APNIC Region AS path length visible: 4.3 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 162 Number of APNIC addresses announced to Internet: 38302176 Equivalent to 2 /8s, 72 /16s and 113 /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: 5573 Total ARIN prefixes after maximum aggregation: 3356 ARIN Deaggregation factor: 1.66 Prefixes being announced from the ARIN address blocks: 5587 Unique aggregates announced from the ARIN address blocks: 3824 ARIN Region origin ASes present in the Internet Routing Table: 887 ARIN Prefixes per ASN: 6.30 ARIN Region origin ASes announcing only one prefix: 325 ARIN Region transit ASes present in the Internet Routing Table: 110 Average ARIN Region AS path length visible: 5.1 Max ARIN Region AS path length visible: 14 Number of ARIN region 32-bit ASNs visible in the Routing Table: 121 Number of ARIN addresses announced to Internet: 69990784 Equivalent to 4 /8s, 43 /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, 393216-401308 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: 2862 Total RIPE prefixes after maximum aggregation: 2430 RIPE Deaggregation factor: 1.18 Prefixes being announced from the RIPE address blocks: 2851 Unique aggregates announced from the RIPE address blocks: 2487 RIPE Region origin ASes present in the Internet Routing Table: 561 RIPE Prefixes per ASN: 5.08 RIPE Region origin ASes announcing only one prefix: 262 RIPE Region transit ASes present in the Internet Routing Table: 87 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: 117 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: 940 Total LACNIC prefixes after maximum aggregation: 442 LACNIC Deaggregation factor: 2.13 Prefixes being announced from the LACNIC address blocks: 938 Unique aggregates announced from the LACNIC address blocks: 545 LACNIC Region origin ASes present in the Internet Routing Table: 131 LACNIC Prefixes per ASN: 7.16 LACNIC Region origin ASes announcing only one prefix: 60 LACNIC Region transit ASes present in the Internet Routing Table: 20 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: 52 Number of LACNIC addresses announced to Internet: 2984448 Equivalent to 0 /8s, 45 /16s and 138 /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: 95 AfriNIC Deaggregation factor: 4.86 Prefixes being announced from the AfriNIC address blocks: 462 Unique aggregates announced from the AfriNIC address blocks: 154 AfriNIC Region origin ASes present in the Internet Routing Table: 39 AfriNIC Prefixes per ASN: 11.85 AfriNIC Region origin ASes announcing only one prefix: 21 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: 909056 Equivalent to 0 /8s, 13 /16s and 223 /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 187 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 54 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 376 201 178 151 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 2152 155 507 90 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 67 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 28614 37 2 2 Fundacao Universidade Regional de Blume 20191 31 16 1 Pontificia Universidad Catolica de Chil 271640 27 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 28571 26 5 18 UNIVERSIDADE DE SAO PAULO, BR 3597 23 2 17 Fundacion InnovaT, 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 213 82 3 KENET-AS, KE 2561 67 4 32 EUN, EG 327687 37 28 3 RENU, UG 327700 36 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37182 11 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 680 284 1967 251 DFN Verein zur Foerderung eines Deutsch 36914 213 82 3 KENET-AS, KE 376 201 178 151 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 4538 187 4192 73 ERX-CERNET-BKB China Education and Rese 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 36914 213 210 KENET-AS, KE 5786 200 199 UPRENET, PR 58647 175 173 KAGAWAU-AS Kagawa University, JP 18558 131 127 NETBLK-RCOEK, US 4538 187 114 ERX-CERNET-BKB China Education and Research Net 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 /16:1627 /17:255 /18:287 /19:404 /20:599 /21:635 /22:1002 /23:1083 /24:6891 /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 200 213 KENET-AS, KE 23024 53 113 OCDE, US 32440 46 52 LONI, US 327700 32 36 MoRENet, MZ 28614 31 37 Fundacao Universidade Regional de Blumenau, BR 25977 29 43 HCCS, US 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 Complete listing at https://bgp.nsrc.org/REN/ASREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 5:15 8:2 12:1 14:84 23:2 24:3 31:1 35:1 37:6 38:6 40:1 41:118 42:11 44:4 45:23 46:6 49:10 58:10 59:9 60:4 61:2 62:6 63:2 64:22 66:4 67:39 68:1 69:10 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 96:5 101:4 102:11 103:213 104:68 108:3 109:3 110:2 111:16 114:1 116:7 118:18 119:22 121:28 122:8 123:8 124:39 128:67 129:31 130:82 131:75 132:50 133:145 134:66 136:193 137:64 138:9 139:4 140:32 141:1 142:21 143:20 144:23 145:2 146:114 147:19 148:7 149:12 150:9 151:2 152:16 153:6 154:6 155:34 156:65 157:19 158:38 159:115 160:25 161:17 162:10 163:56 164:14 165:18 166:1 167:11 168:56 169:9 170:44 172:2 173:6 175:19 177:7 179:8 180:16 181:1 182:6 184:1 185:26 186:3 187:19 188:12 189:5 190:32 191:2 192:1144 193:273 194:95 195:73 196:23 197:123 198:343 199:184 200:196 201:37 202:359 203:190 204:283 205:138 206:141 207:142 208:55 209:91 210:85 211:2 212:21 213:2 216:51 217:10 219:10 220:2 222:4 223:4 End of report