Global R&E Routing Table Report 16:15 GMT Wed 19 May, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ASREN/ Analysis Summary ---------------- BGP routing table entries examined: 14428 Prefixes after maximum aggregation (per Origin AS): 8412 Deaggregation factor: 1.72 Unique aggregates announced (without unneeded subnets): 9326 Total ASes present in the Internet Routing Table: 2133 Prefixes per ASN: 6.76 Origin-only ASes present in the Internet Routing Table: 1836 Origin ASes announcing only one prefix: 879 Transit ASes present in the Internet Routing Table: 297 Transit-only ASes present in the Internet Routing Table: 41 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: 36052 Number of 32-bit ASNs visible in the Routing Table: 444 Prefixes from 32-bit ASNs in the Routing Table: 1299 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: 176362176 Equivalent to 10 /8s, 131 /16s and 18 /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: 1678 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3849 Total APNIC prefixes after maximum aggregation: 2063 APNIC Deaggregation factor: 1.87 Prefixes being announced from the APNIC address blocks: 3851 Unique aggregates announced from the APNIC address blocks: 2253 APNIC Region origin ASes present in the Internet Routing Table: 458 APNIC Prefixes per ASN: 8.41 APNIC Region origin ASes announcing only one prefix: 204 APNIC Region transit ASes present in the Internet Routing Table: 49 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 15 Number of APNIC region 32-bit ASNs visible in the Routing Table: 167 Number of APNIC addresses announced to Internet: 44885728 Equivalent to 2 /8s, 172 /16s and 230 /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: 5634 Total ARIN prefixes after maximum aggregation: 3348 ARIN Deaggregation factor: 1.68 Prefixes being announced from the ARIN address blocks: 5646 Unique aggregates announced from the ARIN address blocks: 3814 ARIN Region origin ASes present in the Internet Routing Table: 871 ARIN Prefixes per ASN: 6.48 ARIN Region origin ASes announcing only one prefix: 318 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: 105 Number of ARIN addresses announced to Internet: 71479680 Equivalent to 4 /8s, 66 /16s and 177 /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: 3081 Total RIPE prefixes after maximum aggregation: 2471 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3075 Unique aggregates announced from the RIPE address blocks: 2575 RIPE Region origin ASes present in the Internet Routing Table: 612 RIPE Prefixes per ASN: 5.02 RIPE Region origin ASes announcing only one prefix: 294 RIPE Region transit ASes present in the Internet Routing Table: 99 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: 112 Number of RIPE addresses announced to Internet: 55804320 Equivalent to 3 /8s, 83 /16s and 129 /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: 740 Total LACNIC prefixes after maximum aggregation: 369 LACNIC Deaggregation factor: 2.01 Prefixes being announced from the LACNIC address blocks: 738 Unique aggregates announced from the LACNIC address blocks: 454 LACNIC Region origin ASes present in the Internet Routing Table: 105 LACNIC Prefixes per ASN: 7.03 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: 38 Number of LACNIC addresses announced to Internet: 1603776 Equivalent to 0 /8s, 24 /16s and 120 /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: 1118 Total AfriNIC prefixes after maximum aggregation: 156 AfriNIC Deaggregation factor: 7.17 Prefixes being announced from the AfriNIC address blocks: 1118 Unique aggregates announced from the AfriNIC address blocks: 230 AfriNIC Region origin ASes present in the Internet Routing Table: 44 AfriNIC Prefixes per ASN: 25.41 AfriNIC Region origin ASes announcing only one prefix: 19 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: 22 Number of AfriNIC addresses announced to Internet: 2588672 Equivalent to 0 /8s, 39 /16s and 128 /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 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 4538 163 4192 72 ERX-CERNET-BKB China Education and Rese 55824 126 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 66 647 61 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 44 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 420 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 39 16 1 MoRENet, MZ 37215 29 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 37074 8 7 6 UG-AS, GH 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 420 82 3 KENET-AS, KE 2018 319 319 72 TENET-1, ZA 680 273 1996 235 DFN Verein zur Foerderung eines Deutsch 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 7575 187 331 133 AARNET-AS-AP Australian Academic and Re 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 420 417 KENET-AS, KE 7497 427 405 CSTNET-AS-AP Computer Network Information Cente 2018 319 247 TENET-1, ZA 5786 201 200 UPRENET, PR 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 2920 112 106 LACOE, US 55824 126 105 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 /16:1678 /17:279 /18:287 /19:452 /20:622 /21:732 /22:1125 /23:1175 /24:7717 /25:77 /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 392 420 KENET-AS, KE 8895 167 172 ISU Internet Services Unit (ISU), SA 23024 53 56 OCDE, US 327700 33 39 MoRENet, MZ 25977 29 32 HCCS, US 200521 25 41 SEAP-AGE, ES 2614 24 62 ROEDUNET, RO 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 14:83 24:2 31:3 37:6 38:4 41:239 42:8 44:4 45:35 46:6 49:10 58:4 59:10 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 96:5 101:3 102:7 103:218 104:9 106:1 108:3 109:8 110:3 111:16 112:4 114:18 116:4 117:2 118:17 119:19 121:27 122:8 124:40 125:1 128:66 129:37 130:82 131:80 132:53 133:137 134:84 136:191 137:115 138:9 139:4 140:31 141:2 142:41 143:32 144:27 146:121 147:24 148:7 149:12 150:17 151:5 152:65 153:5 154:24 155:38 156:64 157:25 158:41 159:113 160:25 161:16 162:8 163:60 164:35 165:14 166:1 167:15 168:96 169:8 170:41 172:1 173:2 175:20 176:8 177:3 178:1 179:6 180:21 182:5 184:4 185:35 186:2 187:1 188:11 190:38 192:1192 193:178 194:104 195:67 196:168 197:202 198:349 199:191 200:138 201:7 202:380 203:284 204:318 205:140 206:143 207:119 208:47 209:93 210:178 211:13 212:165 213:4 216:26 217:15 218:5 219:13 220:9 222:4 223:2 End of report