Global R&E Routing Table Report 22:20 GMT Thu 04 Nov, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ESnet/ Analysis Summary ---------------- BGP routing table entries examined: 19819 Prefixes after maximum aggregation (per Origin AS): 11384 Deaggregation factor: 1.74 Unique aggregates announced (without unneeded subnets): 12971 Total ASes present in the Internet Routing Table: 2954 Prefixes per ASN: 6.71 Origin-only ASes present in the Internet Routing Table: 2540 Origin ASes announcing only one prefix: 1171 Transit ASes present in the Internet Routing Table: 414 Transit-only ASes present in the Internet Routing Table: 67 Average AS path length visible in the Internet Routing Table: 3.9 Max AS path length visible: 16 Max AS path prepend of ASN ( 53263) 11 Prefixes from unregistered ASNs in the Routing Table: 38 Number of instances of unregistered ASNs: 38 Number of 32-bit ASNs allocated by the RIRs: 37731 Number of 32-bit ASNs visible in the Routing Table: 640 Prefixes from 32-bit ASNs in the Routing Table: 1864 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: 4 Number of addresses announced to Internet: 180080128 Equivalent to 10 /8s, 187 /16s and 206 /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: 2322 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4591 Total APNIC prefixes after maximum aggregation: 2288 APNIC Deaggregation factor: 2.01 Prefixes being announced from the APNIC address blocks: 4577 Unique aggregates announced from the APNIC address blocks: 2630 APNIC Region origin ASes present in the Internet Routing Table: 570 APNIC Prefixes per ASN: 8.03 APNIC Region origin ASes announcing only one prefix: 244 APNIC Region transit ASes present in the Internet Routing Table: 62 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: 218 Number of APNIC addresses announced to Internet: 36116224 Equivalent to 2 /8s, 39 /16s and 23 /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: 9808 Total ARIN prefixes after maximum aggregation: 5697 ARIN Deaggregation factor: 1.72 Prefixes being announced from the ARIN address blocks: 9799 Unique aggregates announced from the ARIN address blocks: 6555 ARIN Region origin ASes present in the Internet Routing Table: 1467 ARIN Prefixes per ASN: 6.68 ARIN Region origin ASes announcing only one prefix: 542 ARIN Region transit ASes present in the Internet Routing Table: 204 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: 213 Number of ARIN addresses announced to Internet: 83114240 Equivalent to 4 /8s, 244 /16s and 57 /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: 3120 Total RIPE prefixes after maximum aggregation: 2668 RIPE Deaggregation factor: 1.17 Prefixes being announced from the RIPE address blocks: 3179 Unique aggregates announced from the RIPE address blocks: 2770 RIPE Region origin ASes present in the Internet Routing Table: 643 RIPE Prefixes per ASN: 4.94 RIPE Region origin ASes announcing only one prefix: 309 RIPE Region transit ASes present in the Internet Routing Table: 97 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: 127 Number of RIPE addresses announced to Internet: 54289920 Equivalent to 3 /8s, 60 /16s and 102 /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: 1456 Total LACNIC prefixes after maximum aggregation: 585 LACNIC Deaggregation factor: 2.49 Prefixes being announced from the LACNIC address blocks: 1454 Unique aggregates announced from the LACNIC address blocks: 815 LACNIC Region origin ASes present in the Internet Routing Table: 174 LACNIC Prefixes per ASN: 8.36 LACNIC Region origin ASes announcing only one prefix: 68 LACNIC Region transit ASes present in the Internet Routing Table: 24 Average LACNIC Region AS path length visible: 4.5 Max LACNIC Region AS path length visible: 11 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 74 Number of LACNIC addresses announced to Internet: 4055296 Equivalent to 0 /8s, 61 /16s and 225 /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: 806 Total AfriNIC prefixes after maximum aggregation: 133 AfriNIC Deaggregation factor: 6.06 Prefixes being announced from the AfriNIC address blocks: 806 Unique aggregates announced from the AfriNIC address blocks: 197 AfriNIC Region origin ASes present in the Internet Routing Table: 27 AfriNIC Prefixes per ASN: 29.85 AfriNIC Region origin ASes announcing only one prefix: 8 AfriNIC Region transit ASes present in the Internet Routing Table: 7 Average AfriNIC Region AS path length visible: 3.4 Max AfriNIC Region AS path length visible: 10 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 8 Number of AfriNIC addresses announced to Internet: 2503424 Equivalent to 0 /8s, 38 /16s and 51 /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 610 2157 457 SINET-AS Research Organization of Infor 7497 430 182 24 CSTNET-AS-AP Computer Network Informati 1237 185 74 135 KREONET-AS-KR KISTI, KR 7575 174 329 121 AARNET-AS-AP Australian Academic and Re 58647 164 18 2 KAGAWAU-AS Kagawa University, JP 55824 113 18 10 NKN-CORE-NW NKN Core Network, IN 4538 110 2368 69 ERX-CERNET-BKB China Education and Rese 4621 80 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 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 250 51 7 NU-AS, US 376 233 180 157 RISQ-AS, CA 668 207 717 173 DNIC-AS-00668, US 5786 201 16 1 UPRENET, PR 2152 159 507 88 CSUNET-NW, US 18558 137 18 4 NETBLK-RCOEK, US 270 119 329 88 AS270, US 23024 114 7 17 OCDE, US 2920 109 34 6 LACOE, US 11404 87 174 72 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 680 275 1966 241 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 97 1264 84 SURFNET-NL SURFnet, The Netherlands, NL 137 82 677 77 ASGARR Consortium GARR, IT 553 72 449 72 BELWUE BelWue-Koordination, DE 2200 67 647 61 FR-RENATER Reseau National de telecommu 2614 59 33 57 ROEDUNET, RO 1930 57 81 52 RCCN Fundacao para a Ciencia e a Tecnol 1653 52 167 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 174 207 41 Associacao Rede Nacional de Ensino e Pe 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 94 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 19611 44 17 2 Associacao Antonio Vieira - Unisinos, B 4270 43 16 1 Red de Interconexion Universitaria, AR 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 343 319 72 TENET-1, ZA 327687 138 28 3 RENU, UG 36914 100 82 3 KENET-AS, KE 8094 50 48 4 PUKNET, ZA 327700 41 16 1 MoRENet, MZ 37215 33 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37182 14 8 1 TERNET, TZ 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 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 610 2157 457 SINET-AS Research Organization of Infor 7497 430 182 24 CSTNET-AS-AP Computer Network Informati 2018 343 319 72 TENET-1, ZA 680 275 1966 241 DFN Verein zur Foerderung eines Deutsch 7896 250 51 7 NU-AS, US 376 233 180 157 RISQ-AS, CA 668 207 717 173 DNIC-AS-00668, US 5786 201 16 1 UPRENET, PR 786 186 1774 183 JANET Jisc Services Limited, GB 1237 185 74 135 KREONET-AS-KR KISTI, KR 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 430 406 CSTNET-AS-AP Computer Network Information Cente 2018 343 271 TENET-1, ZA 7896 250 243 NU-AS, US 5786 201 200 UPRENET, PR 58647 164 162 KAGAWAU-AS Kagawa University, JP 327687 138 135 RENU, UG 1916 174 133 Associacao Rede Nacional de Ensino e Pesquisa, 18558 137 133 NETBLK-RCOEK, US 55824 113 103 NKN-CORE-NW NKN Core Network, IN 2920 109 103 LACOE, US 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 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: 293 ESNET, US 192.107.242.0/24 Origin: 394784 UNASSIGNED 192.107.242.0/24 Transit: 40831 PHS, US 205.166.145.0/24 Origin: 394784 UNASSIGNED 205.166.145.0/24 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 /15:123 /16:2054 /17:397 /18:442 /19:604 /20:954 /21:998 /22:1609 /23:1721 /24:10880 /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 86 100 KENET-AS, KE 30041 64 64 RACE, US 23024 53 114 OCDE, US 327700 35 41 MoRENet, MZ 18530 34 84 ISOMEDIA-1, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 25977 31 45 HCCS, US 16713 30 50 NOANET-WA, US 263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN 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 14:84 18:42 23:20 24:8 31:6 35:1 37:6 38:20 40:1 41:150 42:8 44:5 45:64 46:6 47:1 49:10 50:9 52:7 59:20 60:4 61:3 62:6 63:87 64:123 65:23 66:76 67:57 68:12 69:55 70:1 71:1 72:49 74:32 75:1 76:40 77:6 78:3 79:10 80:17 81:27 82:5 83:7 84:5 85:33 86:3 87:2 88:1 89:10 91:34 92:1 93:19 94:5 95:4 96:5 97:1 98:3 101:6 102:8 103:301 104:89 106:1 107:24 108:10 109:4 110:3 111:20 112:4 114:23 116:5 117:61 118:32 119:20 121:26 122:8 123:8 124:39 125:6 128:83 129:172 130:95 131:89 132:63 133:138 134:99 136:213 137:144 138:8 139:5 140:46 141:3 142:43 143:35 144:54 146:217 147:63 148:161 149:13 150:41 151:9 152:82 153:11 154:24 155:53 156:67 157:25 158:42 159:117 160:25 161:55 162:40 163:61 164:25 165:54 166:2 167:16 168:130 169:10 170:68 171:1 172:2 173:15 174:8 175:31 177:10 178:1 179:8 180:21 181:11 182:6 184:3 185:36 186:3 187:18 188:13 189:3 190:48 191:36 192:1494 193:201 194:123 195:56 196:182 197:5 198:563 199:326 200:251 201:39 202:625 203:412 204:402 205:188 206:219 207:183 208:115 209:139 210:179 211:14 212:39 213:4 214:7 216:102 217:14 218:25 219:8 220:16 222:5 223:2 End of report