Global R&E Routing Table Report 22:00 GMT Sat 29 May, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Internet2/ Analysis Summary ---------------- BGP routing table entries examined: 22479 Prefixes after maximum aggregation (per Origin AS): 12270 Deaggregation factor: 1.83 Unique aggregates announced (without unneeded subnets): 14482 Total ASes present in the Internet Routing Table: 2768 Prefixes per ASN: 8.12 Origin-only ASes present in the Internet Routing Table: 2367 Origin ASes announcing only one prefix: 1090 Transit ASes present in the Internet Routing Table: 401 Transit-only ASes present in the Internet Routing Table: 65 Average AS path length visible in the Internet Routing Table: 3.3 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: 36159 Number of 32-bit ASNs visible in the Routing Table: 587 Prefixes from 32-bit ASNs in the Routing Table: 1687 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: 290937240 Equivalent to 17 /8s, 87 /16s and 89 /24s Percentage of available address space announced: 7.9 Percentage of allocated address space announced: 7.9 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: 3169 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4731 Total APNIC prefixes after maximum aggregation: 2369 APNIC Deaggregation factor: 2.00 Prefixes being announced from the APNIC address blocks: 4784 Unique aggregates announced from the APNIC address blocks: 2776 APNIC Region origin ASes present in the Internet Routing Table: 578 APNIC Prefixes per ASN: 8.28 APNIC Region origin ASes announcing only one prefix: 245 APNIC Region transit ASes present in the Internet Routing Table: 65 Average APNIC Region AS path length visible: 3.7 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 217 Number of APNIC addresses announced to Internet: 47067968 Equivalent to 2 /8s, 206 /16s and 51 /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: 11635 Total ARIN prefixes after maximum aggregation: 6333 ARIN Deaggregation factor: 1.84 Prefixes being announced from the ARIN address blocks: 11518 Unique aggregates announced from the ARIN address blocks: 7723 ARIN Region origin ASes present in the Internet Routing Table: 1225 ARIN Prefixes per ASN: 9.40 ARIN Region origin ASes announcing only one prefix: 435 ARIN Region transit ASes present in the Internet Routing Table: 166 Average ARIN Region AS path length visible: 3.0 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 145 Number of ARIN addresses announced to Internet: 174653592 Equivalent to 10 /8s, 105 /16s and 0 /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: 3452 Total RIPE prefixes after maximum aggregation: 2783 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3513 Unique aggregates announced from the RIPE address blocks: 2849 RIPE Region origin ASes present in the Internet Routing Table: 678 RIPE Prefixes per ASN: 5.18 RIPE Region origin ASes announcing only one prefix: 320 RIPE Region transit ASes present in the Internet Routing Table: 110 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: 129 Number of RIPE addresses announced to Internet: 59881088 Equivalent to 3 /8s, 145 /16s and 182 /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: 1448 Total LACNIC prefixes after maximum aggregation: 581 LACNIC Deaggregation factor: 2.49 Prefixes being announced from the LACNIC address blocks: 1453 Unique aggregates announced from the LACNIC address blocks: 820 LACNIC Region origin ASes present in the Internet Routing Table: 171 LACNIC Prefixes per ASN: 8.50 LACNIC Region origin ASes announcing only one prefix: 69 LACNIC Region transit ASes present in the Internet Routing Table: 28 Average LACNIC Region AS path length visible: 4.1 Max LACNIC Region AS path length visible: 11 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 74 Number of LACNIC addresses announced to Internet: 4665152 Equivalent to 0 /8s, 71 /16s and 47 /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: 1198 Total AfriNIC prefixes after maximum aggregation: 190 AfriNIC Deaggregation factor: 6.31 Prefixes being announced from the AfriNIC address blocks: 1209 Unique aggregates announced from the AfriNIC address blocks: 312 AfriNIC Region origin ASes present in the Internet Routing Table: 48 AfriNIC Prefixes per ASN: 25.19 AfriNIC Region origin ASes announcing only one prefix: 21 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 3.3 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: 4668928 Equivalent to 0 /8s, 71 /16s and 62 /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 2155 456 SINET-AS Research Organization of Infor 7497 435 213 26 CSTNET-AS-AP Computer Network Informati 1237 191 75 137 KREONET-AS-KR KISTI, KR 7575 181 331 128 AARNET-AS-AP Australian Academic and Re 58647 176 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 11 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/Internet2/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 2450 4305 942 AMAZON-02, US 14618 514 3965 357 AMAZON-AES, US 7896 245 51 7 NU-AS, US 376 235 180 158 RISQ-AS, CA 668 210 702 181 DNIC-AS-00668, US 8075 203 11189 182 MICROSOFT-CORP-MSN-AS-BLOCK, US 5786 201 16 1 UPRENET, PR 2152 160 507 92 CSUNET-NW, US 18558 138 18 4 NETBLK-RCOEK, US 1 117 1 41 LVLT-1, US Complete listing at https://bgp.nsrc.org/REN/Internet2/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 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 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 Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 202 207 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 2715 60 102 40 Fundacao Carlos Chagas Filho de Amparo 1251 59 36 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 61468 45 3 15 CEDIA, EC 4270 44 16 1 Red de Interconexion Universitaria, AR 19611 44 17 2 Associacao Antonio Vieira - Unisinos, B 28614 38 2 2 Fundacao Universidade Regional de Blume 28571 34 9 19 UNIVERSIDADE DE SAO PAULO, BR Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 413 82 3 KENET-AS, KE 2018 324 319 74 TENET-1, ZA 327687 137 28 3 RENU, UG 2561 74 5 34 EUN, EG 8094 55 48 4 PUKNET, ZA 327700 39 16 1 MoRENet, MZ 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/Internet2/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 2450 4305 942 AMAZON-02, US 2907 619 2155 456 SINET-AS Research Organization of Infor 14618 514 3965 357 AMAZON-AES, US 7497 435 213 26 CSTNET-AS-AP Computer Network Informati 36914 413 82 3 KENET-AS, KE 2018 324 319 74 TENET-1, ZA 680 273 1996 235 DFN Verein zur Foerderung eines Deutsch 7896 245 51 7 NU-AS, US 376 235 180 158 RISQ-AS, CA 668 210 702 181 DNIC-AS-00668, US Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 413 410 KENET-AS, KE 7497 435 409 CSTNET-AS-AP Computer Network Information Cente 2018 324 250 TENET-1, ZA 7896 245 238 NU-AS, US 5786 201 200 UPRENET, PR 58647 176 174 KAGAWAU-AS Kagawa University, JP 8895 172 168 ISU Internet Services Unit (ISU), SA 2907 619 163 SINET-AS Research Organization of Information a 1916 202 161 Associacao Rede Nacional de Ensino e Pesquisa, 14618 514 157 AMAZON-AES, US Complete listing at https://bgp.nsrc.org/REN/Internet2/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/Internet2/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/Internet2/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/Internet2/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 /12:30 /13:34 /14:81 /15:196 /16:2152 /17:455 /18:463 /19:619 /20:972 /21:1027 /22:1583 /23:1697 /24:12816 /25:87 /26:66 /27:120 /28:1 /29:46 /30:0 /31:22 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 16509 662 2450 AMAZON-02, US 36914 387 413 KENET-AS, KE 8895 167 172 ISU Internet Services Unit (ISU), SA 14618 160 514 AMAZON-AES, US 23024 53 56 OCDE, US 327700 33 39 MoRENet, MZ 1 32 117 LVLT-1, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 25977 31 45 HCCS, US 27609 29 45 USC-UNIVERSITY-HOSPITAL, US Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:4 3:74 4:2 5:15 6:4 8:2 12:1 13:217 14:84 15:11 18:55 23:23 24:6 31:6 34:15 35:6 37:6 38:9 40:3 41:236 42:25 44:5 45:69 46:10 47:1 49:10 50:5 52:635 54:123 58:2 59:20 60:4 61:4 62:7 63:34 64:124 65:6 66:52 67:57 68:18 69:42 70:9 71:17 72:16 74:39 75:128 76:166 77:7 78:3 79:10 80:14 81:32 82:5 83:8 84:9 85:36 86:7 87:1 88:2 89:11 91:55 92:1 93:12 94:4 95:4 96:6 97:1 98:8 99:178 100:2 101:6 102:9 103:317 104:39 106:1 107:8 108:19 109:8 110:3 111:21 112:4 114:23 115:1 116:5 117:63 118:35 119:19 121:29 122:11 123:8 124:40 125:13 128:79 129:187 130:120 131:104 132:60 133:137 134:92 135:1 136:203 137:160 138:10 139:16 140:50 141:3 142:61 143:37 144:69 146:126 147:68 148:167 149:16 150:44 151:6 152:77 153:11 154:25 155:57 156:64 157:30 158:48 159:118 160:33 161:19 162:45 163:72 164:48 165:20 166:1 167:17 168:161 169:9 170:93 171:1 172:9 173:19 174:1 175:32 176:12 177:5 178:3 179:13 180:21 181:11 182:6 184:5 185:52 186:2 187:18 188:14 189:6 190:44 191:35 192:1482 193:257 194:146 195:104 196:169 197:201 198:503 199:306 200:251 201:39 202:596 203:432 204:385 205:200 206:197 207:192 208:86 209:131 210:188 211:14 212:166 213:13 214:7 216:93 217:16 218:26 219:8 220:24 222:4 223:2 End of report