Global R&E Routing Table Report 17:15 GMT Thu 29 Apr, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ASREN/ Analysis Summary ---------------- BGP routing table entries examined: 14242 Prefixes after maximum aggregation (per Origin AS): 8174 Deaggregation factor: 1.74 Unique aggregates announced (without unneeded subnets): 9173 Total ASes present in the Internet Routing Table: 2097 Prefixes per ASN: 6.79 Origin-only ASes present in the Internet Routing Table: 1806 Origin ASes announcing only one prefix: 866 Transit ASes present in the Internet Routing Table: 291 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: 1 Number of instances of unregistered ASNs: 1 Number of 32-bit ASNs allocated by the RIRs: 35867 Number of 32-bit ASNs visible in the Routing Table: 442 Prefixes from 32-bit ASNs in the Routing Table: 1326 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: 172388160 Equivalent to 10 /8s, 70 /16s and 111 /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: 1655 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3988 Total APNIC prefixes after maximum aggregation: 2116 APNIC Deaggregation factor: 1.88 Prefixes being announced from the APNIC address blocks: 3990 Unique aggregates announced from the APNIC address blocks: 2379 APNIC Region origin ASes present in the Internet Routing Table: 462 APNIC Prefixes per ASN: 8.64 APNIC Region origin ASes announcing only one prefix: 203 APNIC Region transit ASes present in the Internet Routing Table: 47 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 15 Number of APNIC region 32-bit ASNs visible in the Routing Table: 165 Number of APNIC addresses announced to Internet: 45250624 Equivalent to 2 /8s, 178 /16s and 120 /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, 131072-143673 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: 5335 Total ARIN prefixes after maximum aggregation: 3109 ARIN Deaggregation factor: 1.72 Prefixes being announced from the ARIN address blocks: 5343 Unique aggregates announced from the ARIN address blocks: 3577 ARIN Region origin ASes present in the Internet Routing Table: 845 ARIN Prefixes per ASN: 6.32 ARIN Region origin ASes announcing only one prefix: 310 ARIN Region transit ASes present in the Internet Routing Table: 112 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: 67237600 Equivalent to 4 /8s, 1 /16s and 246 /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: 3057 Total RIPE prefixes after maximum aggregation: 2457 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3050 Unique aggregates announced from the RIPE address blocks: 2554 RIPE Region origin ASes present in the Internet Routing Table: 608 RIPE Prefixes per ASN: 5.02 RIPE Region origin ASes announcing only one prefix: 292 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: 55772576 Equivalent to 3 /8s, 83 /16s and 5 /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: 633 Total LACNIC prefixes after maximum aggregation: 304 LACNIC Deaggregation factor: 2.08 Prefixes being announced from the LACNIC address blocks: 631 Unique aggregates announced from the LACNIC address blocks: 363 LACNIC Region origin ASes present in the Internet Routing Table: 98 LACNIC Prefixes per ASN: 6.44 LACNIC Region origin ASes announcing only one prefix: 42 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: 36 Number of LACNIC addresses announced to Internet: 1547904 Equivalent to 0 /8s, 23 /16s and 158 /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: 1228 Total AfriNIC prefixes after maximum aggregation: 187 AfriNIC Deaggregation factor: 6.57 Prefixes being announced from the AfriNIC address blocks: 1228 Unique aggregates announced from the AfriNIC address blocks: 300 AfriNIC Region origin ASes present in the Internet Routing Table: 44 AfriNIC Prefixes per ASN: 27.91 AfriNIC Region origin ASes announcing only one prefix: 19 AfriNIC Region transit ASes present in the Internet Routing Table: 9 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: 23 Number of AfriNIC addresses announced to Internet: 2579456 Equivalent to 0 /8s, 39 /16s and 92 /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 619 2156 456 SINET-AS Research Organization of Infor 7497 426 210 22 CSTNET-AS-AP Computer Network Informati 1237 189 75 139 KREONET-AS-KR KISTI, KR 7575 184 330 130 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 127 18 21 NKN-CORE-NW NKN Core Network, IN 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR 1659 55 1450 34 ERX-TANET-ASN1 Taiwan Academic Network 2697 54 3 32 ERX-ERNET-AS Education and Research Net 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 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 3477 59 54 35 NOAA-NWAVE, 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 680 273 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 49 151 48 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 67 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 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 31 10 19 UNIVERSIDADE DE SAO PAULO, BR 1916 30 18 22 Associacao Rede Nacional de Ensino e Pe 3597 23 2 17 Fundacion InnovaT, AR 28068 21 2 2 Universidad Nacional de San Luis, AR 27790 18 2 2 Universidad Nacional de Cordoba, 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 412 82 3 KENET-AS, KE 2018 322 319 72 TENET-1, ZA 327687 134 28 3 RENU, UG 327700 84 16 1 MoRENet, MZ 2561 74 5 34 EUN, EG 8094 55 48 4 PUKNET, ZA 37215 29 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37074 11 8 2 UG-AS, GH 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 619 2156 456 SINET-AS Research Organization of Infor 7497 426 210 22 CSTNET-AS-AP Computer Network Informati 36914 412 82 3 KENET-AS, KE 2018 322 319 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 189 75 139 KREONET-AS-KR KISTI, KR 786 187 1787 185 JANET Jisc Services Limited, GB 7575 184 330 130 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 412 409 KENET-AS, KE 7497 426 404 CSTNET-AS-AP Computer Network Information Cente 2018 322 250 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 18558 136 132 NETBLK-RCOEK, US 327687 134 131 RENU, UG 55824 127 106 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 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 /15:102 /16:1640 /17:265 /18:275 /19:452 /20:609 /21:710 /22:1113 /23:1145 /24:7673 /25:76 /26:59 /27:57 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 384 412 KENET-AS, KE 8895 167 172 ISU Internet Services Unit (ISU), SA 327700 78 84 MoRENet, MZ 23024 53 56 OCDE, US 1916 25 30 Associacao Rede Nacional de Ensino e Pesquisa, 2614 24 62 ROEDUNET, RO 37215 23 29 MAREN, MW 200521 22 38 SEAP-AGE, ES 3233 21 30 ICI-ROTLD Romanian Natioanal R&D Network, RO 31638 21 21 ASN-LEPIDA, IT 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 41:278 42:8 44:4 45:34 46:6 49:10 58:4 59:10 60:4 61:4 62:6 63:5 64:12 65:1 66:7 67:7 68:1 69:9 71:1 72:11 74:8 76:4 77:4 78:3 79:10 80:11 81:29 82:2 83:8 84:3 85:23 86:6 87:1 88:1 89:10 91:46 93:11 94:2 95:3 96:5 101:3 102:8 103:215 104:9 106:1 108:2 109:8 110:3 111:16 112:4 114:21 115:1 116:4 117:61 118:20 119:18 121:30 122:8 123:8 124:40 125:1 128:66 129:37 130:82 131:88 132:53 133:137 134:85 136:191 137:103 138:8 139:4 140:31 141:2 142:28 143:32 144:27 146:118 147:27 148:7 149:12 150:34 151:5 152:21 153:5 154:24 155:39 156:63 157:23 158:40 159:112 160:25 161:16 162:8 163:60 164:34 165:13 166:1 167:15 168:92 169:8 170:41 172:1 173:2 175:20 176:8 177:2 178:1 179:6 180:21 182:5 184:6 185:34 186:2 188:11 190:41 192:1093 193:218 194:101 195:89 196:167 197:202 198:356 199:187 200:111 201:6 202:377 203:286 204:315 205:142 206:141 207:117 208:47 209:92 210:183 211:13 212:163 213:4 216:24 217:15 218:5 219:13 220:12 222:4 223:2 End of report