Global R&E Routing Table Report 17:15 GMT Wed 12 May, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ASREN/ Analysis Summary ---------------- BGP routing table entries examined: 14447 Prefixes after maximum aggregation (per Origin AS): 8390 Deaggregation factor: 1.72 Unique aggregates announced (without unneeded subnets): 9319 Total ASes present in the Internet Routing Table: 2123 Prefixes per ASN: 6.80 Origin-only ASes present in the Internet Routing Table: 1828 Origin ASes announcing only one prefix: 876 Transit ASes present in the Internet Routing Table: 295 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: 35976 Number of 32-bit ASNs visible in the Routing Table: 441 Prefixes from 32-bit ASNs in the Routing Table: 1307 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: 176616320 Equivalent to 10 /8s, 134 /16s and 243 /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: 1689 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3871 Total APNIC prefixes after maximum aggregation: 2052 APNIC Deaggregation factor: 1.89 Prefixes being announced from the APNIC address blocks: 3873 Unique aggregates announced from the APNIC address blocks: 2228 APNIC Region origin ASes present in the Internet Routing Table: 456 APNIC Prefixes per ASN: 8.49 APNIC Region origin ASes announcing only one prefix: 203 APNIC Region transit ASes present in the Internet Routing Table: 48 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: 165 Number of APNIC addresses announced to Internet: 44890848 Equivalent to 2 /8s, 172 /16s and 250 /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: 5629 Total ARIN prefixes after maximum aggregation: 3335 ARIN Deaggregation factor: 1.69 Prefixes being announced from the ARIN address blocks: 5641 Unique aggregates announced from the ARIN address blocks: 3815 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: 320 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: 71615680 Equivalent to 4 /8s, 68 /16s and 196 /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: 3072 Total RIPE prefixes after maximum aggregation: 2467 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3066 Unique aggregates announced from the RIPE address blocks: 2569 RIPE Region origin ASes present in the Internet Routing Table: 608 RIPE Prefixes per ASN: 5.04 RIPE Region origin ASes announcing only one prefix: 291 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: 111 Number of RIPE addresses announced to Internet: 55857824 Equivalent to 3 /8s, 84 /16s and 82 /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: 761 Total LACNIC prefixes after maximum aggregation: 372 LACNIC Deaggregation factor: 2.05 Prefixes being announced from the LACNIC address blocks: 759 Unique aggregates announced from the LACNIC address blocks: 474 LACNIC Region origin ASes present in the Internet Routing Table: 101 LACNIC Prefixes per ASN: 7.51 LACNIC Region origin ASes announcing only one prefix: 41 LACNIC Region transit ASes present in the Internet Routing Table: 19 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: 37 Number of LACNIC addresses announced to Internet: 1653568 Equivalent to 0 /8s, 25 /16s and 59 /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: 1108 Total AfriNIC prefixes after maximum aggregation: 159 AfriNIC Deaggregation factor: 6.97 Prefixes being announced from the AfriNIC address blocks: 1108 Unique aggregates announced from the AfriNIC address blocks: 233 AfriNIC Region origin ASes present in the Internet Routing Table: 46 AfriNIC Prefixes per ASN: 24.09 AfriNIC Region origin ASes announcing only one prefix: 21 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: 23 Number of AfriNIC addresses announced to Internet: 2598400 Equivalent to 0 /8s, 39 /16s and 166 /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 189 75 139 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 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 38280 50 3 2 MONASHUNI-MY-AS-AP Monash University Su 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 376 224 180 147 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 50 151 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 1916 57 24 40 Associacao Rede Nacional de Ensino e Pe 2715 48 53 31 Fundacao Carlos Chagas Filho de Amparo 4270 44 16 1 Red de Interconexion Universitaria, AR 61468 41 3 15 CEDIA, EC 263282 37 5 12 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA 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 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 408 82 3 KENET-AS, KE 2018 322 319 72 TENET-1, ZA 327687 133 28 3 RENU, UG 8094 55 48 4 PUKNET, ZA 327700 40 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 408 82 3 KENET-AS, KE 2018 322 319 72 TENET-1, ZA 680 273 1996 235 DFN Verein zur Foerderung eines Deutsch 376 224 180 147 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 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 7497 427 405 CSTNET-AS-AP Computer Network Information Cente 36914 408 405 KENET-AS, KE 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 133 130 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 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 /16:1684 /17:278 /18:281 /19:454 /20:630 /21:732 /22:1134 /23:1171 /24:7722 /25:76 /26:59 /27:56 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 380 408 KENET-AS, KE 8895 167 172 ISU Internet Services Unit (ISU), SA 23024 53 56 OCDE, US 327700 34 40 MoRENet, MZ 263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN 25977 29 32 HCCS, US 1916 25 57 Associacao Rede Nacional de Ensino e Pesquisa, 200521 25 41 SEAP-AGE, ES 2614 24 62 ROEDUNET, RO 37215 23 29 MAREN, MW 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 41:232 42:8 44:4 45:33 46:6 49:10 58:4 59:19 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 76:5 77:5 78:3 79:10 80:11 81:29 82:2 83:8 84:3 85:23 86:6 87:1 88:1 89:10 91:44 93:11 94:2 95:3 96:5 101:3 102:9 103:215 104:5 106:1 108:3 109:8 110:3 111:16 112:4 114:18 116:4 117:2 118:32 119:19 121:27 122:8 124:40 125:1 128:66 129:37 130:82 131:85 132:53 133:137 134:84 136:191 137:114 138:9 139:4 140:31 141:2 142:26 143:32 144:27 146:121 147:24 148:7 149:12 150:17 151:5 152:64 153:5 154:24 155:39 156:64 157:25 158:41 159:112 160:25 161:16 162:8 163:60 164:35 165:14 166:1 167:15 168:86 169:8 170:41 172:1 173:2 175:20 176:8 177:2 178:1 179:6 180:21 182:5 184:4 185:35 186:2 188:12 190:40 191:25 192:1187 193:178 194:103 195:64 196:168 197:198 198:351 199:199 200:134 201:7 202:379 203:283 204:316 205:140 206:144 207:122 208:46 209:93 210:178 211:13 212:165 213:4 216:27 217:15 218:5 219:13 220:9 222:4 223:2 End of report