Global R&E Routing Table Report 17:05 GMT Tue 21 Sep, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ASREN/ Analysis Summary ---------------- BGP routing table entries examined: 14349 Prefixes after maximum aggregation (per Origin AS): 8336 Deaggregation factor: 1.72 Unique aggregates announced (without unneeded subnets): 9208 Total ASes present in the Internet Routing Table: 2152 Prefixes per ASN: 6.67 Origin-only ASes present in the Internet Routing Table: 1856 Origin ASes announcing only one prefix: 884 Transit ASes present in the Internet Routing Table: 296 Transit-only ASes present in the Internet Routing Table: 35 Average AS path length visible in the Internet Routing Table: 4.5 Max AS path length visible: 15 Max AS path prepend of ASN (211089) 11 Prefixes from unregistered ASNs in the Routing Table: 5 Number of instances of unregistered ASNs: 5 Number of 32-bit ASNs allocated by the RIRs: 37280 Number of 32-bit ASNs visible in the Routing Table: 464 Prefixes from 32-bit ASNs in the Routing Table: 1364 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: 174040512 Equivalent to 10 /8s, 95 /16s and 165 /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: 1541 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3878 Total APNIC prefixes after maximum aggregation: 2024 APNIC Deaggregation factor: 1.92 Prefixes being announced from the APNIC address blocks: 3880 Unique aggregates announced from the APNIC address blocks: 2217 APNIC Region origin ASes present in the Internet Routing Table: 443 APNIC Prefixes per ASN: 8.76 APNIC Region origin ASes announcing only one prefix: 188 APNIC Region transit ASes present in the Internet Routing Table: 47 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: 159 Number of APNIC addresses announced to Internet: 44769632 Equivalent to 2 /8s, 171 /16s and 33 /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: 5315 Total ARIN prefixes after maximum aggregation: 3152 ARIN Deaggregation factor: 1.69 Prefixes being announced from the ARIN address blocks: 5329 Unique aggregates announced from the ARIN address blocks: 3570 ARIN Region origin ASes present in the Internet Routing Table: 850 ARIN Prefixes per ASN: 6.27 ARIN Region origin ASes announcing only one prefix: 310 ARIN Region transit ASes present in the Internet Routing Table: 106 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: 105 Number of ARIN addresses announced to Internet: 67767616 Equivalent to 4 /8s, 10 /16s and 13 /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: 3177 Total RIPE prefixes after maximum aggregation: 2543 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3168 Unique aggregates announced from the RIPE address blocks: 2608 RIPE Region origin ASes present in the Internet Routing Table: 637 RIPE Prefixes per ASN: 4.97 RIPE Region origin ASes announcing only one prefix: 310 RIPE Region transit ASes present in the Internet Routing Table: 100 Average RIPE Region AS path length visible: 3.8 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 122 Number of RIPE addresses announced to Internet: 56019584 Equivalent to 3 /8s, 86 /16s and 202 /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: 1091 Total LACNIC prefixes after maximum aggregation: 431 LACNIC Deaggregation factor: 2.53 Prefixes being announced from the LACNIC address blocks: 1089 Unique aggregates announced from the LACNIC address blocks: 523 LACNIC Region origin ASes present in the Internet Routing Table: 140 LACNIC Prefixes per ASN: 7.78 LACNIC Region origin ASes announcing only one prefix: 56 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 5.1 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 55 Number of LACNIC addresses announced to Internet: 2919072 Equivalent to 0 /8s, 44 /16s and 138 /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: 883 Total AfriNIC prefixes after maximum aggregation: 181 AfriNIC Deaggregation factor: 4.88 Prefixes being announced from the AfriNIC address blocks: 883 Unique aggregates announced from the AfriNIC address blocks: 290 AfriNIC Region origin ASes present in the Internet Routing Table: 45 AfriNIC Prefixes per ASN: 19.62 AfriNIC Region origin ASes announcing only one prefix: 20 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 4.6 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: 2564608 Equivalent to 0 /8s, 39 /16s and 34 /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 433 214 25 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 54 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 376 226 179 151 RISQ-AS, CA 5786 201 16 1 UPRENET, PR 2152 156 507 85 CSUNET-NW, US 18558 137 18 4 NETBLK-RCOEK, US 2920 111 34 6 LACOE, US 21976 86 51 18 NJEDGE-NET, US 1736 80 16 1 MU-AS, US 3477 66 71 38 NOAA-NWAVE, US 22742 66 52 33 CT-EDU-NET, US 15296 64 5 54 CYBERA, CA 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 680 275 1998 237 DFN Verein zur Foerderung eines Deutsch 786 186 1763 184 JANET Jisc Services Limited, GB 8895 174 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 66 647 61 FR-RENATER Reseau National de telecommu 2614 61 32 58 ROEDUNET, RO 1930 57 81 52 RCCN Fundacao para a Ciencia e a Tecnol 1653 53 167 50 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 190 154 35 Associacao Rede Nacional de Ensino e Pe 11340 92 24 53 Red Universitaria Nacional, CL 1251 65 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 49 53 31 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 32 26 15 UNIVERSIDADE DE SAO PAULO, BR 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 337 319 71 TENET-1, ZA 327687 137 28 3 RENU, UG 36914 97 82 3 KENET-AS, KE 2561 72 5 31 EUN, EG 8094 55 48 4 PUKNET, ZA 37215 32 8 1 MAREN, MW 327700 30 16 1 MoRENet, MZ 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 433 214 25 CSTNET-AS-AP Computer Network Informati 2018 337 319 71 TENET-1, ZA 680 275 1998 237 DFN Verein zur Foerderung eines Deutsch 376 226 179 151 RISQ-AS, CA 5786 201 16 1 UPRENET, PR 1916 190 154 35 Associacao Rede Nacional de Ensino e Pe 1237 188 74 135 KREONET-AS-KR KISTI, KR 786 186 1763 184 JANET Jisc Services Limited, GB 58647 176 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 433 408 CSTNET-AS-AP Computer Network Information Cente 2018 337 266 TENET-1, ZA 5786 201 200 UPRENET, PR 58647 176 174 KAGAWAU-AS Kagawa University, JP 8895 174 170 ISU Internet Services Unit ISU, SA 1916 190 155 Associacao Rede Nacional de Ensino e Pesquisa, 327687 137 134 RENU, UG 18558 137 133 NETBLK-RCOEK, US 55824 128 106 NKN-CORE-NW NKN Core Network, IN 2920 111 105 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 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 /15:103 /16:1643 /17:273 /18:305 /19:445 /20:672 /21:737 /22:1142 /23:1202 /24:7576 /25:72 /26:58 /27:55 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8895 169 174 ISU Internet Services Unit ISU, SA 36914 84 97 KENET-AS, KE 23024 53 56 OCDE, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 25977 29 32 HCCS, US 200521 29 47 SEAP-AGE, ES 1916 27 190 Associacao Rede Nacional de Ensino e Pesquisa, 37215 26 32 MAREN, MW 327700 26 30 MoRENet, MZ 30220 25 25 SWTELCOOP, US 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 24:2 31:1 37:6 38:3 41:137 42:9 44:4 45:29 46:6 49:10 58:4 59:10 60:4 61:3 62:6 63:5 64:11 66:23 67:34 68:1 69:17 72:12 74:14 76:17 77:6 78:3 79:10 80:17 81:28 82:3 83:7 84:3 85:31 86:9 87:1 88:1 89:10 91:45 92:1 93:18 94:2 95:4 96:5 101:3 102:11 103:210 104:5 106:1 108:4 109:8 110:3 111:16 112:4 114:18 116:5 117:2 118:17 119:18 121:27 122:8 124:39 128:65 129:30 130:84 131:79 132:52 133:138 134:87 136:192 137:108 138:8 139:4 140:34 141:2 142:21 143:32 144:27 146:119 147:26 148:7 149:12 150:19 151:6 152:62 153:6 154:24 155:36 156:65 157:25 158:42 159:116 160:25 161:15 162:11 163:61 164:35 165:53 166:1 167:16 168:100 169:9 170:40 172:1 173:1 175:27 176:8 177:8 178:1 179:9 180:21 182:6 184:3 185:36 186:2 187:18 188:13 189:3 190:41 191:6 192:1080 193:225 194:109 195:84 196:179 197:5 198:315 199:187 200:221 201:38 202:365 203:281 204:305 205:147 206:139 207:136 208:44 209:92 210:177 211:2 212:171 213:4 216:45 217:15 218:5 219:13 220:9 222:5 223:2 End of report