IPv4 R&E Routing Table Report 17:05 GMT Sun 15 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: 12924 Prefixes after maximum aggregation (per Origin AS): 7953 Deaggregation factor: 1.63 Unique aggregates announced (without unneeded subnets): 8774 Number of IPv4 prefixes with a valid ROA: 3130 Number of IPv4 prefixes with an invalid ROA: 0 Number of IPv4 prefixes with no ROA: 9794 Total ASes present in the Internet Routing Table: 2033 Prefixes per ASN: 6.36 Origin-only ASes present in the Internet Routing Table: 1752 Origin ASes announcing only one prefix: 827 Transit ASes present in the Internet Routing Table: 281 Transit-only ASes present in the Internet Routing Table: 31 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: 7 Number of instances of unregistered ASNs: 7 Number of 32-bit ASNs allocated by the RIRs: 39391 Number of 32-bit ASNs visible in the Routing Table: 444 Prefixes from 32-bit ASNs in the Routing Table: 1178 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: 167153056 Equivalent to 9 /8s, 246 /16s and 141 /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: 1317 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3091 Total APNIC prefixes after maximum aggregation: 1648 APNIC Deaggregation factor: 1.88 Prefixes being announced from the APNIC address blocks: 3092 Unique aggregates announced from the APNIC address blocks: 1773 APNIC Region origin ASes present in the Internet Routing Table: 390 APNIC Prefixes per ASN: 7.93 APNIC Region origin ASes announcing only one prefix: 167 APNIC Region transit ASes present in the Internet Routing Table: 51 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 12 Number of APNIC region 32-bit ASNs visible in the Routing Table: 135 Number of APNIC addresses announced to Internet: 38318048 Equivalent to 2 /8s, 72 /16s and 175 /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: 5567 Total ARIN prefixes after maximum aggregation: 3340 ARIN Deaggregation factor: 1.67 Prefixes being announced from the ARIN address blocks: 5583 Unique aggregates announced from the ARIN address blocks: 3820 ARIN Region origin ASes present in the Internet Routing Table: 880 ARIN Prefixes per ASN: 6.34 ARIN Region origin ASes announcing only one prefix: 320 ARIN Region transit ASes present in the Internet Routing Table: 112 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: 119 Number of ARIN addresses announced to Internet: 69634880 Equivalent to 4 /8s, 38 /16s and 139 /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: 2855 Total RIPE prefixes after maximum aggregation: 2425 RIPE Deaggregation factor: 1.18 Prefixes being announced from the RIPE address blocks: 2845 Unique aggregates announced from the RIPE address blocks: 2480 RIPE Region origin ASes present in the Internet Routing Table: 557 RIPE Prefixes per ASN: 5.11 RIPE Region origin ASes announcing only one prefix: 259 RIPE Region transit ASes present in the Internet Routing Table: 85 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: 115 Number of RIPE addresses announced to Internet: 55134592 Equivalent to 3 /8s, 73 /16s and 73 /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: 433 LACNIC Deaggregation factor: 2.17 Prefixes being announced from the LACNIC address blocks: 939 Unique aggregates announced from the LACNIC address blocks: 541 LACNIC Region origin ASes present in the Internet Routing Table: 128 LACNIC Prefixes per ASN: 7.34 LACNIC Region origin ASes announcing only one prefix: 58 LACNIC Region transit ASes present in the Internet Routing Table: 19 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: 50 Number of LACNIC addresses announced to Internet: 3149824 Equivalent to 0 /8s, 48 /16s and 16 /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: 464 Total AfriNIC prefixes after maximum aggregation: 100 AfriNIC Deaggregation factor: 4.64 Prefixes being announced from the AfriNIC address blocks: 463 Unique aggregates announced from the AfriNIC address blocks: 158 AfriNIC Region origin ASes present in the Internet Routing Table: 42 AfriNIC Prefixes per ASN: 11.02 AfriNIC Region origin ASes announcing only one prefix: 23 AfriNIC Region transit ASes present in the Internet Routing Table: 9 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: 25 Number of AfriNIC addresses announced to Internet: 915200 Equivalent to 0 /8s, 13 /16s and 247 /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 188 4192 73 ERX-CERNET-BKB China Education and Rese 58647 179 18 2 KAGAWAU-AS Kagawa University, JP 7575 177 330 123 AARNET-AS-AP Australian Academic and Re 45773 47 3 5 HECPERN-AS-PK PERN AS Content Servie Pr 9270 34 5 6 APAN-KR-AS National Infomation Society 24361 33 56 17 CNGI-NJ-IX-AS-AP CERNET2 IX at Southeas 23767 31 3 10 A-STAR-AS-AP A-STAR, SG 24363 31 21 20 CNGI-JNN-IX-AS-AP CERNET2 IX at Shandon 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 130 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 154 180 87 Rede Nacional de Ensino e Pesquisa, BR 11340 93 24 53 Red Universitaria Nacional, CL 1251 60 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 4270 42 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 211 82 3 KENET-AS, KE 2561 67 4 32 EUN, EG 327687 37 28 3 RENU, UG 327700 35 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 211 82 3 KENET-AS, KE 376 202 178 151 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 4538 188 4192 73 ERX-CERNET-BKB China Education and Rese 786 186 1774 183 JANET Jisc Services Limited, GB 58647 179 18 2 KAGAWAU-AS Kagawa University, JP 7575 177 330 123 AARNET-AS-AP Australian Academic and Re 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 211 208 KENET-AS, KE 5786 200 199 UPRENET, PR 58647 179 177 KAGAWAU-AS Kagawa University, JP 18558 130 126 NETBLK-RCOEK, US 4538 188 115 ERX-CERNET-BKB China Education and Research Net 2920 110 104 LACOE, US 23024 113 94 OCDE, US 1736 80 79 MU-AS, US 1916 154 67 Rede Nacional de Ensino e Pesquisa, BR 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 14212 UNALLOCATED 198.189.240.0/24 2152 CSUNET-NW, US 14212 UNALLOCATED 205.155.0.0/19 2152 CSUNET-NW, US 14212 UNALLOCATED 205.155.240.0/20 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 /16:1624 /17:256 /18:288 /19:399 /20:598 /21:626 /22:1001 /23:1069 /24:6720 /25:51 /26:55 /27:73 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 198 211 KENET-AS, KE 23024 53 113 OCDE, US 32440 45 51 LONI, US 28614 31 37 Fundacao Universidade Regional de Blumenau, BR 327700 31 35 MoRENet, MZ 25977 29 43 HCCS, US 31638 21 21 ASN-LEPIDA, IT 3233 19 29 ICI-ROTLD Romanian National R&D Network, RO 1916 18 154 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 14:15 23:2 24:3 31:1 35:1 37:6 38:6 40:1 41:115 42:11 44:4 45:20 46:6 49:10 58:11 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 76:1 77:7 78:3 79:10 80:7 81:27 82:1 83:6 84:6 85:19 86:4 87:1 88:1 89:10 91:32 93:10 94:2 95:4 96:5 101:4 102:12 103:176 104:67 108:3 109:3 110:2 111:16 114:1 116:7 118:18 119:22 121:28 122:8 123:8 124:39 125:1 128:68 129:33 130:82 131:75 132:50 133:140 134:66 136:193 137:63 138:9 139:4 140:32 141:1 142:21 143:20 144:2 145:2 146:113 147:19 148:7 149:12 150:9 151:2 152:16 153:6 154:6 155:34 156:66 157:19 158:19 159:115 160:25 161:17 162:10 163:56 164:14 165:18 166:1 167:11 168:63 169:9 170:42 172:2 173:6 175:19 177:7 179:8 180:5 181:1 182:6 184:6 185:25 186:3 187:19 188:12 189:5 190:32 191:1 192:1145 193:272 194:95 195:73 196:23 197:122 198:343 199:192 200:200 201:37 202:339 203:194 204:279 205:138 206:140 207:141 208:55 209:91 210:85 211:2 212:21 213:2 216:51 217:10 219:11 220:2 222:4 223:4 End of report