Global R&E Routing Table Report 16:15 GMT Tue 18 May, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ASREN/ Analysis Summary ---------------- BGP routing table entries examined: 14511 Prefixes after maximum aggregation (per Origin AS): 8427 Deaggregation factor: 1.72 Unique aggregates announced (without unneeded subnets): 9324 Total ASes present in the Internet Routing Table: 2124 Prefixes per ASN: 6.83 Origin-only ASes present in the Internet Routing Table: 1827 Origin ASes announcing only one prefix: 873 Transit ASes present in the Internet Routing Table: 297 Transit-only ASes present in the Internet Routing Table: 39 Average AS path length visible in the Internet Routing Table: 4.5 Max AS path length visible: 17 Max AS path prepend of ASN ( 5474) 11 Prefixes from unregistered ASNs in the Routing Table: 6 Number of instances of unregistered ASNs: 6 Number of 32-bit ASNs allocated by the RIRs: 36028 Number of 32-bit ASNs visible in the Routing Table: 442 Prefixes from 32-bit ASNs in the Routing Table: 1297 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: 176408896 Equivalent to 10 /8s, 131 /16s and 201 /24s Percentage of available address space announced: 4.8 Percentage of allocated address space announced: 4.8 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: 1682 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3898 Total APNIC prefixes after maximum aggregation: 2061 APNIC Deaggregation factor: 1.89 Prefixes being announced from the APNIC address blocks: 3900 Unique aggregates announced from the APNIC address blocks: 2219 APNIC Region origin ASes present in the Internet Routing Table: 452 APNIC Prefixes per ASN: 8.63 APNIC Region origin ASes announcing only one prefix: 200 APNIC Region transit ASes present in the Internet Routing Table: 49 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 163 Number of APNIC addresses announced to Internet: 44880608 Equivalent to 2 /8s, 172 /16s and 210 /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: 5649 Total ARIN prefixes after maximum aggregation: 3351 ARIN Deaggregation factor: 1.69 Prefixes being announced from the ARIN address blocks: 5661 Unique aggregates announced from the ARIN address blocks: 3828 ARIN Region origin ASes present in the Internet Routing Table: 871 ARIN Prefixes per ASN: 6.50 ARIN Region origin ASes announcing only one prefix: 317 ARIN Region transit ASes present in the Internet Routing Table: 113 Average ARIN Region AS path length visible: 5.0 Max ARIN Region AS path length visible: 17 Number of ARIN region 32-bit ASNs visible in the Routing Table: 106 Number of ARIN addresses announced to Internet: 71513600 Equivalent to 4 /8s, 67 /16s and 54 /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: 3082 Total RIPE prefixes after maximum aggregation: 2476 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3076 Unique aggregates announced from the RIPE address blocks: 2574 RIPE Region origin ASes present in the Internet Routing Table: 612 RIPE Prefixes per ASN: 5.03 RIPE Region origin ASes announcing only one prefix: 294 RIPE Region transit ASes present in the Internet Routing Table: 98 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: 113 Number of RIPE addresses announced to Internet: 55865504 Equivalent to 3 /8s, 84 /16s and 112 /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: 742 Total LACNIC prefixes after maximum aggregation: 368 LACNIC Deaggregation factor: 2.02 Prefixes being announced from the LACNIC address blocks: 740 Unique aggregates announced from the LACNIC address blocks: 458 LACNIC Region origin ASes present in the Internet Routing Table: 106 LACNIC Prefixes per ASN: 6.98 LACNIC Region origin ASes announcing only one prefix: 44 LACNIC Region transit ASes present in the Internet Routing Table: 20 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: 39 Number of LACNIC addresses announced to Internet: 1605312 Equivalent to 0 /8s, 24 /16s and 126 /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: 1134 Total AfriNIC prefixes after maximum aggregation: 166 AfriNIC Deaggregation factor: 6.83 Prefixes being announced from the AfriNIC address blocks: 1134 Unique aggregates announced from the AfriNIC address blocks: 245 AfriNIC Region origin ASes present in the Internet Routing Table: 42 AfriNIC Prefixes per ASN: 27.00 AfriNIC Region origin ASes announcing only one prefix: 18 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 7 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 21 Number of AfriNIC addresses announced to Internet: 2543872 Equivalent to 0 /8s, 38 /16s and 209 /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 618 2155 455 SINET-AS Research Organization of Infor 7497 427 210 22 CSTNET-AS-AP Computer Network Informati 4538 263 4192 72 ERX-CERNET-BKB China Education and Rese 1237 190 75 140 KREONET-AS-KR KISTI, KR 7575 187 331 133 AARNET-AS-AP Australian Academic and Re 58647 176 18 2 KAGAWAU-AS Kagawa University, JP 55824 127 18 21 NKN-CORE-NW NKN Core Network, IN 1659 55 1450 34 ERX-TANET-ASN1 Taiwan Academic Network 2697 55 3 31 ERX-ERNET-AS Education and Research Net 132524 48 9 11 TIFR-AS Tata Institute of Fundamental R 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 376 226 180 149 RISQ-AS, CA 5786 201 16 1 UPRENET, PR 2152 160 507 92 CSUNET-NW, US 18558 136 18 4 NETBLK-RCOEK, US 270 117 297 87 AS270, US 2920 112 34 6 LACOE, US 21976 86 51 18 NJEDGE-NET, US 22742 84 61 45 CT-EDU-NET, US 1736 80 16 1 MU-AS, US 15296 65 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 680 273 1996 235 DFN Verein zur Foerderung eines Deutsch 786 187 1787 185 JANET Jisc Services Limited, GB 8895 172 24 4 ISU Internet Services Unit (ISU), SA 559 116 550 107 SWITCH Peering requests: (peering@switc 1103 95 1520 84 SURFNET-NL SURFnet, The Netherlands, NL 137 82 677 77 ASGARR Consortium GARR, IT 2200 67 647 62 FR-RENATER Reseau National de telecommu 2614 62 32 59 ROEDUNET, RO 1930 56 82 51 RCCN Fundacao para a Ciencia e a Tecnol 1653 51 151 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 11340 94 24 54 Red Universitaria Nacional, CL 1251 66 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 1916 56 24 39 Associacao Rede Nacional de Ensino e Pe 2715 49 53 32 Fundacao Carlos Chagas Filho de Amparo 4270 43 16 1 Red de Interconexion Universitaria, AR 61468 41 3 15 CEDIA, EC 20191 31 16 1 Pontificia Universidad Catolica de Chil 28571 26 10 19 UNIVERSIDADE DE SAO PAULO, BR 3597 23 2 17 Fundacion InnovaT, AR 28068 21 2 2 Universidad Nacional de San Luis, 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 423 82 3 KENET-AS, KE 2018 319 319 72 TENET-1, ZA 327687 136 28 3 RENU, UG 8094 55 48 4 PUKNET, ZA 327700 38 16 1 MoRENet, MZ 37215 29 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 2561 23 1 17 EUN, EG 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, 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 618 2155 455 SINET-AS Research Organization of Infor 7497 427 210 22 CSTNET-AS-AP Computer Network Informati 36914 423 82 3 KENET-AS, KE 2018 319 319 72 TENET-1, ZA 680 273 1996 235 DFN Verein zur Foerderung eines Deutsch 4538 263 4192 72 ERX-CERNET-BKB China Education and Rese 376 226 180 149 RISQ-AS, CA 5786 201 16 1 UPRENET, PR 1237 190 75 140 KREONET-AS-KR KISTI, KR 786 187 1787 185 JANET Jisc Services Limited, GB Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 423 420 KENET-AS, KE 7497 427 405 CSTNET-AS-AP Computer Network Information Cente 2018 319 247 TENET-1, ZA 5786 201 200 UPRENET, PR 4538 263 191 ERX-CERNET-BKB China Education and Research Net 58647 176 174 KAGAWAU-AS Kagawa University, JP 8895 172 168 ISU Internet Services Unit (ISU), SA 327687 136 133 RENU, UG 18558 136 132 NETBLK-RCOEK, US 55824 127 106 NKN-CORE-NW NKN Core Network, IN 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 36843 UNALLOCATED 64.56.80.0/23 11096 FLORIDANET, US 36843 UNALLOCATED 108.59.20.0/24 11096 FLORIDANET, US 36843 UNALLOCATED 131.91.183.0/24 11096 FLORIDANET, US 36843 UNALLOCATED 146.201.218.0/24 11096 FLORIDANET, US 36843 UNALLOCATED 146.201.219.0/24 11096 FLORIDANET, 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 /14:35 /15:102 /16:1679 /17:279 /18:285 /19:456 /20:658 /21:747 /22:1130 /23:1175 /24:7742 /25:76 /26:60 /27:54 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 395 423 KENET-AS, KE 8895 167 172 ISU Internet Services Unit (ISU), SA 23024 53 56 OCDE, US 327700 32 38 MoRENet, MZ 25977 29 32 HCCS, US 2614 24 62 ROEDUNET, RO 200521 24 40 SEAP-AGE, ES 1916 23 56 Associacao Rede Nacional de Ensino e Pesquisa, 37215 23 29 MAREN, MW 3233 21 30 ICI-ROTLD Romanian Natioanal R&D Network, RO Complete listing at https://bgp.nsrc.org/REN/ASREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1 5:15 8:2 12:1 14:84 24:2 31:3 37:6 38:4 41:239 42:8 44:4 45:39 46:6 49:10 58:4 59:18 60:4 61:3 62:6 63:4 64:12 65:1 66:7 67:36 68:1 69:14 71:1 72:11 74:8 76:6 77:5 78:3 79:10 80:11 81:29 82:2 83:8 84:3 85:25 86:6 87:1 88:1 89:10 91:44 93:11 94:2 95:3 96:5 101:3 102:7 103:211 104:9 106:1 108:3 109:8 110:3 111:11 112:4 114:18 116:4 117:2 118:17 119:19 121:17 122:1 124:40 125:1 128:66 129:36 130:82 131:80 132:53 133:137 134:84 136:191 137:115 138:9 139:4 140:31 141:2 142:41 143:32 144:27 146:121 147:24 148:7 149:12 150:14 151:5 152:65 153:5 154:24 155:38 156:64 157:25 158:41 159:113 160:25 161:16 162:8 163:60 164:35 165:14 166:1 167:15 168:96 169:8 170:40 172:1 173:2 175:20 176:8 177:3 178:1 179:6 180:21 182:5 184:5 185:35 186:2 187:1 188:12 190:38 192:1193 193:184 194:104 195:78 196:168 197:204 198:350 199:191 200:137 201:7 202:390 203:277 204:319 205:140 206:143 207:120 208:47 209:93 210:191 211:13 212:164 213:4 216:26 217:15 218:10 219:15 220:9 222:4 223:2 End of report