Global R&E Routing Table Report 17:05 GMT Sun 24 Oct, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ASREN/ Analysis Summary ---------------- BGP routing table entries examined: 14190 Prefixes after maximum aggregation (per Origin AS): 8258 Deaggregation factor: 1.72 Unique aggregates announced (without unneeded subnets): 9171 Total ASes present in the Internet Routing Table: 2151 Prefixes per ASN: 6.60 Origin-only ASes present in the Internet Routing Table: 1851 Origin ASes announcing only one prefix: 893 Transit ASes present in the Internet Routing Table: 300 Transit-only ASes present in the Internet Routing Table: 37 Average AS path length visible in the Internet Routing Table: 4.5 Max AS path length visible: 14 Max AS path prepend of ASN ( 5474) 11 Prefixes from unregistered ASNs in the Routing Table: 14 Number of instances of unregistered ASNs: 14 Number of 32-bit ASNs allocated by the RIRs: 37643 Number of 32-bit ASNs visible in the Routing Table: 486 Prefixes from 32-bit ASNs in the Routing Table: 1444 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 0 Number of addresses announced to Internet: 174262336 Equivalent to 10 /8s, 99 /16s and 8 /24s Percentage of available address space announced: 4.7 Percentage of allocated address space announced: 4.7 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: 1542 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3904 Total APNIC prefixes after maximum aggregation: 2050 APNIC Deaggregation factor: 1.90 Prefixes being announced from the APNIC address blocks: 3906 Unique aggregates announced from the APNIC address blocks: 2261 APNIC Region origin ASes present in the Internet Routing Table: 462 APNIC Prefixes per ASN: 8.45 APNIC Region origin ASes announcing only one prefix: 202 APNIC Region transit ASes present in the Internet Routing Table: 51 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 12 Number of APNIC region 32-bit ASNs visible in the Routing Table: 174 Number of APNIC addresses announced to Internet: 44689248 Equivalent to 2 /8s, 169 /16s and 231 /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: 5114 Total ARIN prefixes after maximum aggregation: 3072 ARIN Deaggregation factor: 1.66 Prefixes being announced from the ARIN address blocks: 5137 Unique aggregates announced from the ARIN address blocks: 3503 ARIN Region origin ASes present in the Internet Routing Table: 833 ARIN Prefixes per ASN: 6.17 ARIN Region origin ASes announcing only one prefix: 312 ARIN Region transit ASes present in the Internet Routing Table: 109 Average ARIN Region AS path length visible: 5.0 Max ARIN Region AS path length visible: 13 Number of ARIN region 32-bit ASNs visible in the Routing Table: 108 Number of ARIN addresses announced to Internet: 67899008 Equivalent to 4 /8s, 12 /16s and 14 /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: 3173 Total RIPE prefixes after maximum aggregation: 2528 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3164 Unique aggregates announced from the RIPE address blocks: 2598 RIPE Region origin ASes present in the Internet Routing Table: 627 RIPE Prefixes per ASN: 5.05 RIPE Region origin ASes announcing only one prefix: 305 RIPE Region transit ASes present in the Internet Routing Table: 96 Average RIPE Region AS path length visible: 3.8 Max RIPE Region AS path length visible: 14 Number of RIPE region 32-bit ASNs visible in the Routing Table: 122 Number of RIPE addresses announced to Internet: 56020160 Equivalent to 3 /8s, 86 /16s and 204 /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: 1087 Total LACNIC prefixes after maximum aggregation: 418 LACNIC Deaggregation factor: 2.60 Prefixes being announced from the LACNIC address blocks: 1085 Unique aggregates announced from the LACNIC address blocks: 518 LACNIC Region origin ASes present in the Internet Routing Table: 142 LACNIC Prefixes per ASN: 7.64 LACNIC Region origin ASes announcing only one prefix: 54 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 5.2 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 57 Number of LACNIC addresses announced to Internet: 3023008 Equivalent to 0 /8s, 46 /16s and 32 /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: 898 Total AfriNIC prefixes after maximum aggregation: 184 AfriNIC Deaggregation factor: 4.88 Prefixes being announced from the AfriNIC address blocks: 898 Unique aggregates announced from the AfriNIC address blocks: 291 AfriNIC Region origin ASes present in the Internet Routing Table: 47 AfriNIC Prefixes per ASN: 19.11 AfriNIC Region origin ASes announcing only one prefix: 20 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 4.5 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: 2630912 Equivalent to 0 /8s, 40 /16s and 37 /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 620 2156 457 SINET-AS Research Organization of Infor 7497 427 182 24 CSTNET-AS-AP Computer Network Informati 1237 188 74 135 KREONET-AS-KR KISTI, KR 58647 176 18 2 KAGAWAU-AS Kagawa University, JP 7575 175 329 121 AARNET-AS-AP Australian Academic and Re 4538 172 4192 72 ERX-CERNET-BKB China Education and Rese 55824 128 19 22 NKN-CORE-NW NKN Core Network, IN 2697 55 3 31 ERX-ERNET-AS Education and Research Net 1659 51 1434 33 ERX-TANET-ASN1 Taiwan Academic Network 9317 49 16 1 ITISNET-AS INHA UNIVERSITY, KR 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 376 231 180 156 RISQ-AS, CA 5786 196 16 1 UPRENET, PR 2152 155 507 84 CSUNET-NW, US 18558 137 18 4 NETBLK-RCOEK, US 2920 112 34 6 LACOE, US 21976 86 51 18 NJEDGE-NET, US 3477 72 71 42 NOAA-NWAVE, US 22742 70 53 34 CT-EDU-NET, US 15296 64 5 54 CYBERA, CA 23024 56 4 3 OCDE, 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 680 276 1998 238 DFN Verein zur Foerderung eines Deutsch 786 186 1774 183 JANET Jisc Services Limited, GB 8895 177 24 4 ISU Internet Services Unit ISU, SA 559 115 550 106 SWITCH Peering requests: peering@switch 1103 95 1520 84 SURFNET-NL SURFnet, The Netherlands, NL 137 82 677 77 ASGARR Consortium GARR, IT 2200 67 647 61 FR-RENATER Reseau National de telecommu 2614 60 33 58 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/ASREN/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 182 161 31 Associacao Rede Nacional de Ensino e Pe 11340 94 24 54 Red Universitaria Nacional, CL 1251 65 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 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 263282 37 5 12 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA 4270 34 16 1 Red de Interconexion Universitaria, AR 20191 31 16 1 Pontificia Universidad Catolica de Chil 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 2018 339 319 71 TENET-1, ZA 327687 132 28 3 RENU, UG 36914 99 82 3 KENET-AS, KE 2561 73 5 32 EUN, EG 8094 50 48 4 PUKNET, ZA 327700 42 16 1 MoRENet, MZ 37215 32 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37182 13 8 1 TERNET, TZ 37501 11 49 6 UOFS, ZA 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 620 2156 457 SINET-AS Research Organization of Infor 7497 427 182 24 CSTNET-AS-AP Computer Network Informati 2018 339 319 71 TENET-1, ZA 680 276 1998 238 DFN Verein zur Foerderung eines Deutsch 376 231 180 156 RISQ-AS, CA 5786 196 16 1 UPRENET, PR 1237 188 74 135 KREONET-AS-KR KISTI, KR 786 186 1774 183 JANET Jisc Services Limited, GB 1916 182 161 31 Associacao Rede Nacional de Ensino e Pe 8895 177 24 4 ISU Internet Services Unit ISU, SA 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 427 403 CSTNET-AS-AP Computer Network Information Cente 2018 339 268 TENET-1, ZA 5786 196 195 UPRENET, PR 58647 176 174 KAGAWAU-AS Kagawa University, JP 8895 177 173 ISU Internet Services Unit ISU, SA 1916 182 151 Associacao Rede Nacional de Ensino e Pesquisa, 18558 137 133 NETBLK-RCOEK, US 327687 132 129 RENU, UG 55824 128 106 NKN-CORE-NW NKN Core Network, IN 2920 112 106 LACOE, 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 14822 UNALLOCATED 140.163.6.0/24 10466 MAGPI, US 14822 UNALLOCATED 140.163.64.0/24 10466 MAGPI, US 14822 UNALLOCATED 140.163.70.0/24 10466 MAGPI, US 14822 UNALLOCATED 140.163.128.0/17 10466 MAGPI, US 22063 UNALLOCATED 153.10.0.0/16 2152 CSUNET-NW, US 396334 UNALLOCATED 205.143.136.0/21 5078 ONENET-AS-1, US 396334 UNALLOCATED 205.143.136.0/24 5078 ONENET-AS-1, US 396334 UNALLOCATED 205.143.137.0/24 5078 ONENET-AS-1, US 396334 UNALLOCATED 205.143.138.0/24 5078 ONENET-AS-1, US 396334 UNALLOCATED 205.143.139.0/24 5078 ONENET-AS-1, US Complete listing at https://bgp.nsrc.org/REN/ASREN/data-badAS 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 /11:1 /12:10 /13:19 /14:33 /15:108 /16:1646 /17:274 /18:300 /19:438 /20:668 /21:735 /22:1127 /23:1181 /24:7464 /25:70 /26:60 /27:53 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8895 172 177 ISU Internet Services Unit ISU, SA 36914 85 99 KENET-AS, KE 23024 53 56 OCDE, US 327700 36 42 MoRENet, MZ 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN 25977 29 36 HCCS, US 200521 29 48 SEAP-AGE, ES 1916 27 182 Associacao Rede Nacional de Ensino e Pesquisa, 37215 26 32 MAREN, MW Complete listing at https://bgp.nsrc.org/REN/ASREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:15 8:2 12:1 14:84 23:3 24:5 31:1 37:6 38:4 41:148 42:9 44:4 45:40 46:6 49:10 58:4 59:10 60:4 61:3 62:6 63:5 64:13 66:23 67:34 68:1 69:17 72:12 74:14 77:6 78:3 79:10 80:17 81:26 82:2 83:7 84:3 85:28 86:9 87:1 88:1 89:10 91:46 93:18 94:2 95:4 96:5 101:4 102:16 103:225 104:4 106:1 108:4 109:9 110:3 111:16 112:4 114:18 116:5 117:2 118:17 119:19 121:27 122:8 123:8 124:39 125:1 128:66 129:33 130:82 131:78 132:54 133:138 134:33 136:187 137:99 138:8 139:4 140:33 141:2 142:21 143:28 144:27 146:120 147:23 148:7 149:12 150:19 151:6 152:23 153:6 154:23 155:36 156:67 157:25 158:39 159:116 160:25 161:16 162:11 163:60 164:36 165:53 166:1 167:11 168:100 169:8 170:36 172:1 175:21 176:8 177:7 178:1 179:10 180:21 182:6 184:1 185:33 186:2 187:17 188:13 189:3 190:47 191:30 192:1083 193:223 194:108 195:84 196:179 197:5 198:304 199:183 200:218 201:38 202:370 203:280 204:310 205:143 206:140 207:132 208:41 209:88 210:176 211:2 212:171 213:4 216:27 217:14 218:5 219:13 220:9 222:5 223:2 End of report