Global R&E Routing Table Report 22:15 GMT Mon 26 Apr, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/CENIC/ Analysis Summary ---------------- BGP routing table entries examined: 22122 Prefixes after maximum aggregation (per Origin AS): 12082 Deaggregation factor: 1.83 Unique aggregates announced (without unneeded subnets): 14278 Total ASes present in the Internet Routing Table: 2785 Prefixes per ASN: 7.94 Origin-only ASes present in the Internet Routing Table: 2394 Origin ASes announcing only one prefix: 1109 Transit ASes present in the Internet Routing Table: 391 Transit-only ASes present in the Internet Routing Table: 56 Average AS path length visible in the Internet Routing Table: 4.0 Max AS path length visible: 15 Max AS path prepend of ASN ( 10497) 11 Prefixes from unregistered ASNs in the Routing Table: 15 Number of instances of unregistered ASNs: 15 Number of 32-bit ASNs allocated by the RIRs: 35837 Number of 32-bit ASNs visible in the Routing Table: 596 Prefixes from 32-bit ASNs in the Routing Table: 1698 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 2 Number of addresses announced to Internet: 280943872 Equivalent to 16 /8s, 190 /16s and 221 /24s Percentage of available address space announced: 7.6 Percentage of allocated address space announced: 7.6 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: 3036 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4635 Total APNIC prefixes after maximum aggregation: 2353 APNIC Deaggregation factor: 1.97 Prefixes being announced from the APNIC address blocks: 4683 Unique aggregates announced from the APNIC address blocks: 2732 APNIC Region origin ASes present in the Internet Routing Table: 573 APNIC Prefixes per ASN: 8.17 APNIC Region origin ASes announcing only one prefix: 246 APNIC Region transit ASes present in the Internet Routing Table: 63 Average APNIC Region AS path length visible: 4.0 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 216 Number of APNIC addresses announced to Internet: 47145728 Equivalent to 2 /8s, 207 /16s and 99 /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: 11399 Total ARIN prefixes after maximum aggregation: 6167 ARIN Deaggregation factor: 1.85 Prefixes being announced from the ARIN address blocks: 11298 Unique aggregates announced from the ARIN address blocks: 7573 ARIN Region origin ASes present in the Internet Routing Table: 1251 ARIN Prefixes per ASN: 9.03 ARIN Region origin ASes announcing only one prefix: 447 ARIN Region transit ASes present in the Internet Routing Table: 165 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 149 Number of ARIN addresses announced to Internet: 166353152 Equivalent to 9 /8s, 234 /16s and 89 /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: 3388 Total RIPE prefixes after maximum aggregation: 2767 RIPE Deaggregation factor: 1.22 Prefixes being announced from the RIPE address blocks: 3452 Unique aggregates announced from the RIPE address blocks: 2840 RIPE Region origin ASes present in the Internet Routing Table: 673 RIPE Prefixes per ASN: 5.13 RIPE Region origin ASes announcing only one prefix: 320 RIPE Region transit ASes present in the Internet Routing Table: 107 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 130 Number of RIPE addresses announced to Internet: 59864320 Equivalent to 3 /8s, 145 /16s and 117 /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: 1423 Total LACNIC prefixes after maximum aggregation: 590 LACNIC Deaggregation factor: 2.41 Prefixes being announced from the LACNIC address blocks: 1422 Unique aggregates announced from the LACNIC address blocks: 825 LACNIC Region origin ASes present in the Internet Routing Table: 179 LACNIC Prefixes per ASN: 7.94 LACNIC Region origin ASes announcing only one prefix: 73 LACNIC Region transit ASes present in the Internet Routing Table: 28 Average LACNIC Region AS path length visible: 5.0 Max LACNIC Region AS path length visible: 12 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 77 Number of LACNIC addresses announced to Internet: 4720384 Equivalent to 0 /8s, 72 /16s and 7 /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: 1262 Total AfriNIC prefixes after maximum aggregation: 191 AfriNIC Deaggregation factor: 6.61 Prefixes being announced from the AfriNIC address blocks: 1265 Unique aggregates announced from the AfriNIC address blocks: 306 AfriNIC Region origin ASes present in the Internet Routing Table: 50 AfriNIC Prefixes per ASN: 25.30 AfriNIC Region origin ASes announcing only one prefix: 23 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 4.3 Max AfriNIC Region AS path length visible: 13 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 24 Number of AfriNIC addresses announced to Internet: 2859776 Equivalent to 0 /8s, 43 /16s and 163 /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 608 2156 456 SINET-AS Research Organization of Infor 7497 441 233 33 CSTNET-AS-AP Computer Network Informati 7575 186 347 132 AARNET-AS-AP Australian Academic and Re 1237 183 75 132 KREONET-AS-KR KISTI, KR 58647 164 18 2 KAGAWAU-AS Kagawa University, JP 55824 128 19 22 NKN-CORE-NW NKN Core Network, IN 4538 123 4192 72 ERX-CERNET-BKB China Education and Rese 4621 82 37 10 UNINET-AS-AP UNINET-, TH 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR 1659 57 1450 34 ERX-TANET-ASN1 Taiwan Academic Network Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 2168 4080 722 AMAZON-02, US 14618 471 3980 347 AMAZON-AES, US 7896 260 51 7 NU-AS, US 376 236 180 158 RISQ-AS, CA 668 210 718 176 DNIC-AS-00668, US 5786 201 16 1 UPRENET, PR 8075 194 9141 180 MICROSOFT-CORP-MSN-AS-BLOCK, US 2152 162 507 95 CSUNET-NW, US 18558 136 18 4 NETBLK-RCOEK, US 270 117 297 87 AS270, US Complete listing at https://bgp.nsrc.org/REN/CENIC/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 140 24 4 ISU Internet Services Unit (ISU), SA 559 116 550 107 SWITCH Peering requests: (peering@switc 1103 98 1520 85 SURFNET-NL SURFnet, The Netherlands, NL 137 82 677 77 ASGARR Consortium GARR, IT 553 72 449 72 BELWUE BelWue-Koordination, DE 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 Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 178 215 41 Associacao Rede Nacional de Ensino e Pe 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 94 24 54 Red Universitaria Nacional, CL 1251 67 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 60 102 40 Fundacao Carlos Chagas Filho de Amparo 4270 44 16 1 Red de Interconexion Universitaria, AR 19611 44 17 2 Associacao Antonio Vieira - Unisinos, B 61468 41 3 15 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 28571 37 26 15 UNIVERSIDADE DE SAO PAULO, BR Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 419 82 3 KENET-AS, KE 2018 325 319 74 TENET-1, ZA 327687 135 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 37182 20 8 1 TERNET, TZ 37074 11 8 2 UG-AS, GH Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 2168 4080 722 AMAZON-02, US 2907 608 2156 456 SINET-AS Research Organization of Infor 14618 471 3980 347 AMAZON-AES, US 7497 441 233 33 CSTNET-AS-AP Computer Network Informati 36914 419 82 3 KENET-AS, KE 2018 325 319 74 TENET-1, ZA 680 273 1996 235 DFN Verein zur Foerderung eines Deutsch 7896 260 51 7 NU-AS, US 376 236 180 158 RISQ-AS, CA 668 210 718 176 DNIC-AS-00668, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 419 416 KENET-AS, KE 7497 441 408 CSTNET-AS-AP Computer Network Information Cente 7896 260 253 NU-AS, US 2018 325 251 TENET-1, ZA 5786 201 200 UPRENET, PR 58647 164 162 KAGAWAU-AS Kagawa University, JP 2907 608 152 SINET-AS Research Organization of Information a 1916 178 137 Associacao Rede Nacional de Ensino e Pesquisa, 8895 140 136 ISU Internet Services Unit (ISU), SA 18558 136 132 NETBLK-RCOEK, US Complete listing at https://bgp.nsrc.org/REN/CENIC/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 19658 UNALLOCATED 65.205.131.0/24 11096 FLORIDANET, US 36843 UNALLOCATED 108.59.20.0/24 11096 FLORIDANET, US 36843 UNALLOCATED 108.59.23.0/24 11096 FLORIDANET, US 36843 UNALLOCATED 131.91.183.0/24 11096 FLORIDANET, US 36843 UNALLOCATED 131.91.252.0/22 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 36843 UNALLOCATED 162.223.23.0/24 11096 FLORIDANET, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-badAS Prefixes from private and non-routed address space (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 1103 SURFNET-NL SURFnet, The Netherlands, NL Complete listing at https://bgp.nsrc.org/REN/CENIC/data-dsua Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 192.31.196.0/24 Origin: 112 UNASSIGNED Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL Transit: 11537 INTERNET2-RESEARCH-EDU, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-add-IANA 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 /10:4 /11:7 /12:21 /13:33 /14:81 /15:194 /16:2160 /17:450 /18:454 /19:628 /20:971 /21:1016 /22:1568 /23:1655 /24:12879 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 16509 600 2168 AMAZON-02, US 36914 391 419 KENET-AS, KE 14618 151 471 AMAZON-AES, US 8895 135 140 ISU Internet Services Unit (ISU), SA 327700 78 84 MoRENet, MZ 23024 53 114 OCDE, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 25977 31 45 HCCS, US 263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN 18632 29 55 VOLCANO-VISION, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:4 3:55 4:2 5:15 6:4 8:2 12:1 13:211 14:84 15:10 18:41 23:21 24:6 31:6 34:1 35:1 37:6 38:9 40:3 41:292 42:24 44:5 45:67 46:9 47:1 49:10 50:7 52:598 54:110 58:2 59:20 60:4 61:4 62:7 63:38 64:114 65:13 66:56 67:58 68:18 69:41 70:5 71:9 72:20 74:37 75:128 76:166 77:6 78:3 79:10 80:14 81:32 82:4 83:8 84:5 85:37 86:9 87:1 88:2 89:11 91:56 92:1 93:13 94:4 95:4 96:5 97:1 98:8 99:172 101:6 102:8 103:314 104:104 106:1 107:24 108:21 109:8 110:3 111:21 112:4 114:23 115:1 116:5 117:63 118:35 119:18 121:29 122:11 123:8 124:40 125:9 128:78 129:226 130:106 131:113 132:58 133:137 134:91 135:1 136:204 137:160 138:14 139:16 140:50 141:3 142:61 143:38 144:77 146:126 147:68 148:167 149:16 150:45 151:7 152:77 153:11 154:25 155:58 156:64 157:29 158:47 159:117 160:33 161:20 162:49 163:69 164:48 165:19 166:1 167:17 168:155 169:9 170:109 171:1 172:7 173:24 174:1 175:32 176:11 177:7 178:2 179:13 180:21 181:11 182:6 184:7 185:49 186:3 187:18 188:14 189:6 190:44 191:36 192:1495 193:255 194:143 195:103 196:169 197:205 198:529 199:306 200:253 201:39 202:591 203:407 204:387 205:206 206:198 207:191 208:87 209:136 210:174 211:14 212:165 213:13 214:7 216:88 217:16 218:26 219:8 220:24 222:4 223:1 End of report