IPv4 R&E Routing Table Report 22:20 GMT Mon 20 Jun, 2022 IPv4 BGP Table (R&E) as seen at ESnet. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ESnet/ Analysis Summary ---------------- BGP routing table entries examined: 20211 Prefixes after maximum aggregation (per Origin AS): 11820 Deaggregation factor: 1.71 Unique aggregates announced (without unneeded subnets): 13357 Number of IPv4 prefixes with a valid ROA: 4448 Number of IPv4 prefixes with an invalid ROA: 51 Number of IPv4 prefixes with no ROA: 15712 Total ASes present in the Internet Routing Table: 3030 Prefixes per ASN: 6.67 Origin-only ASes present in the Internet Routing Table: 2616 Origin ASes announcing only one prefix: 1183 Transit ASes present in the Internet Routing Table: 414 Transit-only ASes present in the Internet Routing Table: 70 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.9 Max AS path length visible: 17 Max AS path prepend of ASN ( 53263) 11 Prefixes from unregistered ASNs in the Routing Table: 24 Number of instances of unregistered ASNs: 24 Number of 32-bit ASNs allocated by the RIRs: 39624 Number of 32-bit ASNs visible in the Routing Table: 678 Prefixes from 32-bit ASNs in the Routing Table: 1912 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: 180772352 Equivalent to 10 /8s, 198 /16s and 94 /24s Percentage of available address space announced: 4.9 Percentage of allocated address space announced: 4.9 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 2665 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4529 Total APNIC prefixes after maximum aggregation: 2251 APNIC Deaggregation factor: 2.01 Prefixes being announced from the APNIC address blocks: 4516 Unique aggregates announced from the APNIC address blocks: 2590 APNIC Region origin ASes present in the Internet Routing Table: 560 APNIC Prefixes per ASN: 8.06 APNIC Region origin ASes announcing only one prefix: 240 APNIC Region transit ASes present in the Internet Routing Table: 66 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 16 Number of APNIC region 32-bit ASNs visible in the Routing Table: 216 Number of APNIC addresses announced to Internet: 36109312 Equivalent to 2 /8s, 38 /16s and 252 /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, 131072-151865 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: 9969 Total ARIN prefixes after maximum aggregation: 6058 ARIN Deaggregation factor: 1.65 Prefixes being announced from the ARIN address blocks: 9915 Unique aggregates announced from the ARIN address blocks: 6918 ARIN Region origin ASes present in the Internet Routing Table: 1522 ARIN Prefixes per ASN: 6.51 ARIN Region origin ASes announcing only one prefix: 550 ARIN Region transit ASes present in the Internet Routing Table: 204 Average ARIN Region AS path length visible: 3.8 Max ARIN Region AS path length visible: 17 Number of ARIN region 32-bit ASNs visible in the Routing Table: 236 Number of ARIN addresses announced to Internet: 83342080 Equivalent to 4 /8s, 247 /16s and 179 /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: 3434 Total RIPE prefixes after maximum aggregation: 2785 RIPE Deaggregation factor: 1.23 Prefixes being announced from the RIPE address blocks: 3526 Unique aggregates announced from the RIPE address blocks: 2903 RIPE Region origin ASes present in the Internet Routing Table: 663 RIPE Prefixes per ASN: 5.32 RIPE Region origin ASes announcing only one prefix: 305 RIPE Region transit ASes present in the Internet Routing Table: 94 Average RIPE Region AS path length visible: 3.6 Max RIPE Region AS path length visible: 14 Number of RIPE region 32-bit ASNs visible in the Routing Table: 135 Number of RIPE addresses announced to Internet: 54444800 Equivalent to 3 /8s, 62 /16s and 195 /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: 1418 Total LACNIC prefixes after maximum aggregation: 557 LACNIC Deaggregation factor: 2.55 Prefixes being announced from the LACNIC address blocks: 1415 Unique aggregates announced from the LACNIC address blocks: 750 LACNIC Region origin ASes present in the Internet Routing Table: 164 LACNIC Prefixes per ASN: 8.63 LACNIC Region origin ASes announcing only one prefix: 65 LACNIC Region transit ASes present in the Internet Routing Table: 24 Average LACNIC Region AS path length visible: 4.4 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 67 Number of LACNIC addresses announced to Internet: 4242688 Equivalent to 0 /8s, 64 /16s and 189 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + 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: 837 Total AfriNIC prefixes after maximum aggregation: 156 AfriNIC Deaggregation factor: 5.37 Prefixes being announced from the AfriNIC address blocks: 837 Unique aggregates announced from the AfriNIC address blocks: 194 AfriNIC Region origin ASes present in the Internet Routing Table: 45 AfriNIC Prefixes per ASN: 18.60 AfriNIC Region origin ASes announcing only one prefix: 23 AfriNIC Region transit ASes present in the Internet Routing Table: 8 Average AfriNIC Region AS path length visible: 3.1 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: 2632960 Equivalent to 0 /8s, 40 /16s and 45 /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 567 2124 451 SINET-AS Research Organization of Infor 7497 432 182 24 CSTNET-AS-AP Computer Network Informati 1237 187 74 135 KREONET-AS-KR KISTI, KR 7575 176 330 122 AARNET-AS-AP Australian Academic and Re 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 55824 116 18 11 NKN-CORE-NW NKN Core Network, IN 4538 110 2367 69 ERX-CERNET-BKB China Education and Rese 4621 78 37 10 UNINET-AS-AP UNINET-, TH 4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 668 212 718 176 DNIC-AS-00668, US 376 204 178 153 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 18530 182 29 139 ISOMEDIA-1, US 2152 151 507 90 CSUNET-NW, US 18558 131 18 4 NETBLK-RCOEK, US 11404 124 177 106 AS-WAVE-1, US 270 119 329 88 AS270, US 23024 114 7 17 OCDE, US 2920 107 34 6 LACOE, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 285 1967 251 DFN Verein zur Foerderung eines Deutsch 786 186 1774 183 JANET Jisc Services Limited, GB 8895 136 24 3 ISU Internet Services Unit ISU, SA 559 115 550 106 SWITCH Peering requests: peering@switch 1103 98 1264 85 SURFNET-NL SURFnet, The Netherlands, NL 2614 96 27 76 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 553 73 449 73 BELWUE BelWue-Koordination, DE 2200 64 599 59 FR-RENATER Reseau National de telecommu 1930 58 81 53 RCCN Fundacao para a Ciencia e a Tecnol Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 152 207 39 Rede Nacional de Ensino e Pesquisa, BR 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 95 24 54 Red Universitaria Nacional, CL 1251 65 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 19611 48 17 2 Associacao Antonio Vieira - Unisinos, B 4270 41 16 1 Red de Interconexion Universitaria, AR 61468 41 3 15 CEDIA, EC 28571 39 42 16 UNIVERSIDADE DE SAO PAULO, BR 28614 37 2 2 Fundacao Universidade Regional de Blume Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 375 319 72 TENET-1, ZA 36914 219 82 3 KENET-AS, KE 8094 48 48 15 PUKNET, ZA 327687 39 28 3 RENU, UG 327700 32 16 1 MoRENet, MZ 37182 18 8 1 TERNET, TZ 37074 13 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA 37654 10 1 6 RwEdNet-AS, RW 36982 8 33 8 UCT, ZA Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 567 2124 451 SINET-AS Research Organization of Infor 7497 432 182 24 CSTNET-AS-AP Computer Network Informati 2018 375 319 72 TENET-1, ZA 680 285 1967 251 DFN Verein zur Foerderung eines Deutsch 36914 219 82 3 KENET-AS, KE 668 212 718 176 DNIC-AS-00668, US 376 204 178 153 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 1237 187 74 135 KREONET-AS-KR KISTI, KR 786 186 1774 183 JANET Jisc Services Limited, GB Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 432 408 CSTNET-AS-AP Computer Network Information Cente 2018 375 303 TENET-1, ZA 36914 219 216 KENET-AS, KE 5786 200 199 UPRENET, PR 58647 175 173 KAGAWAU-AS Kagawa University, JP 8895 136 133 ISU Internet Services Unit ISU, SA 18558 131 127 NETBLK-RCOEK, US 1916 152 113 Rede Nacional de Ensino e Pesquisa, BR 55824 116 105 NKN-CORE-NW NKN Core Network, IN 2920 107 101 LACOE, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 19176 UNALLOCATED 63.81.146.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.108.136.0/23 32278 GETWIRELESS, US 19176 UNALLOCATED 63.108.137.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.108.138.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.127.160.0/22 32278 GETWIRELESS, US 19176 UNALLOCATED 63.127.161.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.127.162.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.127.163.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 63.127.168.0/21 32278 GETWIRELESS, US 19176 UNALLOCATED 63.127.169.0/24 32278 GETWIRELESS, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS Prefixes from the Special Purpose Address Registry (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/ESnet/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 192.31.196.0/24 Origin: 112 UNASSIGNED 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Transit: 293 ESNET, US Complete listing at https://bgp.nsrc.org/REN/ESnet/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 /9:0 /10:0 /11:0 /12:0 /13:0 /14:36 /15:122 /16:2051 /17:421 /18:453 /19:617 /20:962 /21:992 /22:1657 /23:1775 /24:11125 /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 36914 206 219 KENET-AS, KE 8895 131 136 ISU Internet Services Unit ISU, SA 30041 80 80 RACE, US 18530 56 182 ISOMEDIA-1, US 23024 53 114 OCDE, US 19194 43 45 JOVITA, US 16713 31 57 NOANET-WA, US 25977 31 45 HCCS, US 28614 31 37 Fundacao Universidade Regional de Blumenau, BR 200521 30 51 SEAP-AGE, ES Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 5:15 6:4 8:6 12:1 14:86 18:46 23:44 24:6 31:7 35:5 37:9 38:29 40:1 41:124 42:10 44:7 45:46 46:6 47:1 49:10 50:16 52:6 59:20 60:4 61:3 62:5 63:102 64:141 65:24 66:70 67:65 68:18 69:56 70:1 71:1 72:51 74:33 76:42 77:8 78:3 79:10 80:18 81:28 82:4 83:6 84:5 85:40 87:6 88:1 89:10 91:40 93:12 94:6 95:4 96:5 97:1 98:4 101:6 102:12 103:289 104:116 107:31 108:9 109:5 110:4 111:16 114:23 116:6 117:61 118:32 119:23 121:27 122:8 123:8 124:39 125:5 128:90 129:43 130:95 131:70 132:58 133:145 134:100 136:218 137:78 138:9 139:5 140:49 141:2 142:53 143:31 144:25 145:2 146:222 147:61 148:193 149:13 150:42 151:9 152:82 153:13 154:29 155:54 156:66 157:31 158:41 159:116 160:30 161:60 162:52 163:58 164:19 165:57 166:3 167:16 168:123 169:10 170:71 171:1 172:6 173:14 174:8 175:31 177:11 179:9 180:21 182:4 184:3 185:42 186:3 187:19 188:14 189:5 190:34 191:36 192:1548 193:253 194:127 195:38 196:162 197:124 198:559 199:340 200:239 201:38 202:621 203:429 204:389 205:184 206:225 207:185 208:126 209:138 210:178 211:13 212:171 213:5 214:7 216:102 217:11 218:22 219:6 220:17 222:5 223:3 End of report