Global R&E Routing Table Report 22:20 GMT Sat 24 Jul, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ESnet/ Analysis Summary ---------------- BGP routing table entries examined: 19355 Prefixes after maximum aggregation (per Origin AS): 11307 Deaggregation factor: 1.71 Unique aggregates announced (without unneeded subnets): 12867 Total ASes present in the Internet Routing Table: 2877 Prefixes per ASN: 6.73 Origin-only ASes present in the Internet Routing Table: 2445 Origin ASes announcing only one prefix: 1118 Transit ASes present in the Internet Routing Table: 432 Transit-only ASes present in the Internet Routing Table: 86 Average AS path length visible in the Internet Routing Table: 3.8 Max AS path length visible: 17 Max AS path prepend of ASN (207352) 12 Prefixes from unregistered ASNs in the Routing Table: 43 Number of instances of unregistered ASNs: 43 Number of 32-bit ASNs allocated by the RIRs: 36696 Number of 32-bit ASNs visible in the Routing Table: 551 Prefixes from 32-bit ASNs in the Routing Table: 1585 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: 5 Number of addresses announced to Internet: 180007424 Equivalent to 10 /8s, 186 /16s and 178 /24s Percentage of available address space announced: 4.9 Percentage of allocated address space announced: 4.9 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: 2291 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4196 Total APNIC prefixes after maximum aggregation: 2138 APNIC Deaggregation factor: 1.96 Prefixes being announced from the APNIC address blocks: 4185 Unique aggregates announced from the APNIC address blocks: 2485 APNIC Region origin ASes present in the Internet Routing Table: 470 APNIC Prefixes per ASN: 8.90 APNIC Region origin ASes announcing only one prefix: 187 APNIC Region transit ASes present in the Internet Routing Table: 57 Average APNIC Region AS path length visible: 3.8 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 136 Number of APNIC addresses announced to Internet: 36203264 Equivalent to 2 /8s, 40 /16s and 107 /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, 131072-147769 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: 9863 Total ARIN prefixes after maximum aggregation: 5770 ARIN Deaggregation factor: 1.71 Prefixes being announced from the ARIN address blocks: 9847 Unique aggregates announced from the ARIN address blocks: 6632 ARIN Region origin ASes present in the Internet Routing Table: 1462 ARIN Prefixes per ASN: 6.74 ARIN Region origin ASes announcing only one prefix: 536 ARIN Region transit ASes present in the Internet Routing Table: 209 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 16 Number of ARIN region 32-bit ASNs visible in the Routing Table: 202 Number of ARIN addresses announced to Internet: 83302144 Equivalent to 4 /8s, 247 /16s and 23 /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: 3108 Total RIPE prefixes after maximum aggregation: 2660 RIPE Deaggregation factor: 1.17 Prefixes being announced from the RIPE address blocks: 3173 Unique aggregates announced from the RIPE address blocks: 2758 RIPE Region origin ASes present in the Internet Routing Table: 649 RIPE Prefixes per ASN: 4.89 RIPE Region origin ASes announcing only one prefix: 311 RIPE Region transit ASes present in the Internet Routing Table: 104 Average RIPE Region AS path length visible: 3.7 Max RIPE Region AS path length visible: 17 Number of RIPE region 32-bit ASNs visible in the Routing Table: 128 Number of RIPE addresses announced to Internet: 53799168 Equivalent to 3 /8s, 52 /16s and 233 /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: 1372 Total LACNIC prefixes after maximum aggregation: 558 LACNIC Deaggregation factor: 2.46 Prefixes being announced from the LACNIC address blocks: 1371 Unique aggregates announced from the LACNIC address blocks: 761 LACNIC Region origin ASes present in the Internet Routing Table: 158 LACNIC Prefixes per ASN: 8.68 LACNIC Region origin ASes announcing only one prefix: 62 LACNIC Region transit ASes present in the Internet Routing Table: 24 Average LACNIC Region AS path length visible: 4.4 Max LACNIC Region AS path length visible: 11 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 62 Number of LACNIC addresses announced to Internet: 4129024 Equivalent to 0 /8s, 63 /16s and 1 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-272796 + 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: 773 Total AfriNIC prefixes after maximum aggregation: 156 AfriNIC Deaggregation factor: 4.96 Prefixes being announced from the AfriNIC address blocks: 774 Unique aggregates announced from the AfriNIC address blocks: 226 AfriNIC Region origin ASes present in the Internet Routing Table: 45 AfriNIC Prefixes per ASN: 17.20 AfriNIC Region origin ASes announcing only one prefix: 22 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 3.6 Max AfriNIC Region AS path length visible: 13 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 23 Number of AfriNIC addresses announced to Internet: 2568704 Equivalent to 0 /8s, 39 /16s and 50 /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 606 2139 454 SINET-AS Research Organization of Infor 7497 435 214 25 CSTNET-AS-AP Computer Network Informati 1237 189 75 137 KREONET-AS-KR KISTI, KR 7575 175 330 121 AARNET-AS-AP Australian Academic and Re 58647 164 18 2 KAGAWAU-AS Kagawa University, JP 4538 107 2368 69 ERX-CERNET-BKB China Education and Rese 4621 81 37 10 UNINET-AS-AP UNINET-, TH 4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR 24151 54 4 20 CNNIC-CRITICAL-AP China Internet Networ Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 7896 246 51 7 NU-AS, US 376 228 180 157 RISQ-AS, CA 668 206 717 172 DNIC-AS-00668, US 5786 177 16 1 UPRENET, PR 2152 157 507 90 CSUNET-NW, US 18558 137 18 4 NETBLK-RCOEK, US 23024 113 7 20 OCDE, US 270 112 297 87 AS270, US 2920 109 34 6 LACOE, US 11404 86 174 70 AS-WAVE-1, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 272 1964 238 DFN Verein zur Foerderung eines Deutsch 786 187 1779 185 JANET Jisc Services Limited, GB 559 116 550 107 SWITCH Peering requests: peering@switch 1103 96 1263 83 SURFNET-NL SURFnet, The Netherlands, NL 137 82 677 77 ASGARR Consortium GARR, IT 553 72 449 72 BELWUE BelWue-Koordination, DE 2200 66 647 61 FR-RENATER Reseau National de telecommu 2614 62 32 59 ROEDUNET, RO 1930 56 80 51 RCCN Fundacao para a Ciencia e a Tecnol 1653 52 151 49 SUNET SUNET Swedish University Network, Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 175 207 41 Associacao Rede Nacional de Ensino e Pe 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 92 24 54 Red Universitaria Nacional, CL 1251 65 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 60 102 40 Fundacao Carlos Chagas Filho de Amparo 4270 44 16 1 Red de Interconexion Universitaria, AR 19611 44 17 2 Associacao Antonio Vieira - Unisinos, B 61468 41 3 15 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 28571 37 26 15 UNIVERSIDADE DE SAO PAULO, BR Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 328 319 73 TENET-1, ZA 327687 134 28 3 RENU, UG 36914 97 82 3 KENET-AS, KE 8094 55 48 4 PUKNET, ZA 327700 38 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37074 11 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 2561 6 0 5 EUN, EG Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 606 2139 454 SINET-AS Research Organization of Infor 7497 435 214 25 CSTNET-AS-AP Computer Network Informati 2018 328 319 73 TENET-1, ZA 680 272 1964 238 DFN Verein zur Foerderung eines Deutsch 7896 246 51 7 NU-AS, US 376 228 180 157 RISQ-AS, CA 668 206 717 172 DNIC-AS-00668, US 1237 189 75 137 KREONET-AS-KR KISTI, KR 786 187 1779 185 JANET Jisc Services Limited, GB 5786 177 16 1 UPRENET, PR Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 435 410 CSTNET-AS-AP Computer Network Information Cente 2018 328 255 TENET-1, ZA 7896 246 239 NU-AS, US 5786 177 176 UPRENET, PR 58647 164 162 KAGAWAU-AS Kagawa University, JP 1916 175 134 Associacao Rede Nacional de Ensino e Pesquisa, 18558 137 133 NETBLK-RCOEK, US 327687 134 131 RENU, UG 2920 109 103 LACOE, US 36914 97 94 KENET-AS, KE Complete listing at https://bgp.nsrc.org/REN/ESnet/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 19176 UNALLOCATED 63.81.146.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.108.136.0/23 32278 GETWIRELESS, US 19176 UNALLOCATED 63.108.136.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.108.137.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.108.138.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.127.160.0/22 32278 GETWIRELESS, US 19176 UNALLOCATED 63.127.161.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.127.162.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.127.163.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.127.168.0/21 32278 GETWIRELESS, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS Prefixes from private and non-routed address space (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/ESnet/data-dsua Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 164.160.240.0/20 Origin: 328439 UNASSIGNED Transit: 327992 GHANAIAN-ACADEMIC-AND-RESEARCH-NETWORK, 192.31.196.0/24 Origin: 112 UNASSIGNED Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL Transit: 293 ESNET, US 192.107.242.0/24 Origin: 394784 UNASSIGNED Transit: 40831 PHS, US 205.166.145.0/24 Origin: 394784 UNASSIGNED Transit: 40831 PHS, US Complete listing at https://bgp.nsrc.org/REN/ESnet/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 /9:0 /10:0 /11:0 /12:0 /13:0 /14:37 /15:118 /16:2063 /17:390 /18:435 /19:622 /20:953 /21:1007 /22:1584 /23:1630 /24:10516 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 84 97 KENET-AS, KE 30041 64 64 RACE, US 23024 53 113 OCDE, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 327700 32 38 MoRENet, MZ 25977 31 45 HCCS, US 18530 30 78 ISOMEDIA-1, US 263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN 16713 29 36 NOANET-WA, US 18632 29 55 VOLCANO-VISION, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:5 5:15 6:4 8:5 12:1 18:41 23:17 24:5 31:6 35:1 37:6 38:19 40:1 41:113 42:26 44:5 45:36 46:8 47:1 49:6 50:12 52:29 58:1 59:20 60:4 61:4 62:6 63:86 64:131 65:15 66:80 67:60 68:19 69:59 70:1 71:1 72:50 74:33 75:1 76:40 77:6 78:3 79:10 80:14 81:32 82:4 83:7 84:4 85:33 86:3 87:2 88:1 89:10 91:34 92:1 93:12 94:5 95:5 96:5 97:1 98:4 101:2 102:6 103:189 104:85 106:1 107:30 108:10 109:3 110:3 111:20 112:4 114:23 115:1 116:4 117:61 118:35 119:19 121:29 122:8 123:8 124:43 125:13 128:81 129:177 130:97 131:100 132:60 133:137 134:93 136:190 137:149 138:10 139:5 140:46 141:3 142:42 143:35 144:32 146:197 147:71 148:161 149:14 150:41 151:7 152:80 153:11 154:22 155:51 156:64 157:28 158:10 159:117 160:31 161:56 162:44 163:63 164:23 165:16 166:2 167:16 168:139 169:9 170:68 171:1 172:2 173:23 174:7 175:32 177:7 178:1 179:12 180:6 181:11 182:5 184:7 185:39 186:3 187:17 188:13 189:6 190:40 191:30 192:1489 193:199 194:129 195:57 196:163 197:4 198:548 199:328 200:252 201:39 202:593 203:414 204:405 205:191 206:217 207:186 208:119 209:138 210:184 211:14 212:38 213:4 214:7 216:95 217:16 218:26 219:8 220:21 222:4 223:2 End of report