IPv4 R&E Routing Table Report 22:20 GMT Fri 19 Aug, 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: 19907 Prefixes after maximum aggregation (per Origin AS): 11756 Deaggregation factor: 1.69 Unique aggregates announced (without unneeded subnets): 13227 Number of IPv4 prefixes with a valid ROA: 4382 Number of IPv4 prefixes with an invalid ROA: 68 Number of IPv4 prefixes with no ROA: 15457 Total ASes present in the Internet Routing Table: 2995 Prefixes per ASN: 6.65 Origin-only ASes present in the Internet Routing Table: 2577 Origin ASes announcing only one prefix: 1170 Transit ASes present in the Internet Routing Table: 418 Transit-only ASes present in the Internet Routing Table: 75 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.8 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: 40016 Number of 32-bit ASNs visible in the Routing Table: 665 Prefixes from 32-bit ASNs in the Routing Table: 1832 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: 180843008 Equivalent to 10 /8s, 199 /16s and 114 /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: 2654 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4506 Total APNIC prefixes after maximum aggregation: 2253 APNIC Deaggregation factor: 2.00 Prefixes being announced from the APNIC address blocks: 4493 Unique aggregates announced from the APNIC address blocks: 2581 APNIC Region origin ASes present in the Internet Routing Table: 557 APNIC Prefixes per ASN: 8.07 APNIC Region origin ASes announcing only one prefix: 238 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: 214 Number of APNIC addresses announced to Internet: 36081152 Equivalent to 2 /8s, 38 /16s and 142 /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: 9857 Total ARIN prefixes after maximum aggregation: 6037 ARIN Deaggregation factor: 1.63 Prefixes being announced from the ARIN address blocks: 9797 Unique aggregates announced from the ARIN address blocks: 6809 ARIN Region origin ASes present in the Internet Routing Table: 1518 ARIN Prefixes per ASN: 6.45 ARIN Region origin ASes announcing only one prefix: 554 ARIN Region transit ASes present in the Internet Routing Table: 205 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: 237 Number of ARIN addresses announced to Internet: 83860992 Equivalent to 4 /8s, 255 /16s and 158 /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: 3442 Total RIPE prefixes after maximum aggregation: 2793 RIPE Deaggregation factor: 1.23 Prefixes being announced from the RIPE address blocks: 3537 Unique aggregates announced from the RIPE address blocks: 2916 RIPE Region origin ASes present in the Internet Routing Table: 663 RIPE Prefixes per ASN: 5.33 RIPE Region origin ASes announcing only one prefix: 301 RIPE Region transit ASes present in the Internet Routing Table: 95 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: 134 Number of RIPE addresses announced to Internet: 54387712 Equivalent to 3 /8s, 61 /16s and 228 /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: 1195 Total LACNIC prefixes after maximum aggregation: 479 LACNIC Deaggregation factor: 2.49 Prefixes being announced from the LACNIC address blocks: 1195 Unique aggregates announced from the LACNIC address blocks: 676 LACNIC Region origin ASes present in the Internet Routing Table: 130 LACNIC Prefixes per ASN: 9.19 LACNIC Region origin ASes announcing only one prefix: 55 LACNIC Region transit ASes present in the Internet Routing Table: 22 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: 57 Number of LACNIC addresses announced to Internet: 3899904 Equivalent to 0 /8s, 59 /16s and 130 /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: 883 Total AfriNIC prefixes after maximum aggregation: 181 AfriNIC Deaggregation factor: 4.88 Prefixes being announced from the AfriNIC address blocks: 883 Unique aggregates announced from the AfriNIC address blocks: 243 AfriNIC Region origin ASes present in the Internet Routing Table: 46 AfriNIC Prefixes per ASN: 19.20 AfriNIC Region origin ASes announcing only one prefix: 22 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 3.4 Max AfriNIC Region AS path length visible: 13 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 23 Number of AfriNIC addresses announced to Internet: 2612736 Equivalent to 0 /8s, 39 /16s and 222 /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 561 2139 451 SINET-AS Research Organization of Infor 7497 434 182 24 CSTNET-AS-AP Computer Network Informati 1237 185 74 134 KREONET-AS-KR KISTI, KR 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 7575 174 329 120 AARNET-AS-AP Australian Academic and Re 55824 115 18 11 NKN-CORE-NW NKN Core Network, IN 4538 110 2367 69 ERX-CERNET-BKB China Education and Rese 4621 77 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 668 213 718 176 DNIC-AS-00668, US 376 203 178 152 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 18530 182 29 139 ISOMEDIA-1, US 2152 151 507 91 CSUNET-NW, US 18558 136 18 4 NETBLK-RCOEK, US 11404 126 177 105 AS-WAVE-1, US 270 118 329 87 AS270, US 23024 114 7 17 OCDE, US 2920 108 34 7 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 680 282 1951 250 DFN Verein zur Foerderung eines Deutsch 786 185 1774 182 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 97 1264 85 SURFNET-NL SURFnet, The Netherlands, NL 2614 95 27 75 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 64 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 59 102 39 Fundacao Carlos Chagas Filho de Amparo 61468 42 3 15 CEDIA, EC 28571 41 40 18 UNIVERSIDADE DE SAO PAULO, BR 19611 37 17 2 Associacao Antonio Vieira - Unisinos, B 28614 37 2 2 Fundacao Universidade Regional de Blume 263282 37 5 12 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA 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 374 319 72 TENET-1, ZA 36914 233 82 3 KENET-AS, KE 8094 48 48 15 PUKNET, ZA 327687 38 28 3 RENU, UG 327700 34 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37182 19 1 13 TERNET, TZ 37074 13 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA 37654 10 1 6 RwEdNet-AS, RW 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 561 2139 451 SINET-AS Research Organization of Infor 7497 434 182 24 CSTNET-AS-AP Computer Network Informati 2018 374 319 72 TENET-1, ZA 680 282 1951 250 DFN Verein zur Foerderung eines Deutsch 36914 233 82 3 KENET-AS, KE 668 213 718 176 DNIC-AS-00668, US 376 203 178 152 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 786 185 1774 182 JANET Jisc Services Limited, GB 1237 185 74 134 KREONET-AS-KR KISTI, KR 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 434 410 CSTNET-AS-AP Computer Network Information Cente 2018 374 302 TENET-1, ZA 36914 233 230 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 136 132 NETBLK-RCOEK, US 1916 152 113 Rede Nacional de Ensino e Pesquisa, BR 55824 115 104 NKN-CORE-NW NKN Core Network, IN 2920 108 101 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 /16:2047 /17:423 /18:454 /19:621 /20:947 /21:977 /22:1616 /23:1748 /24:10916 /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 220 233 KENET-AS, KE 8895 131 136 ISU Internet Services Unit ISU, SA 30041 64 72 RACE, US 18530 56 182 ISOMEDIA-1, US 23024 53 114 OCDE, US 19194 43 45 JOVITA, US 25977 31 45 HCCS, US 28614 31 37 Fundacao Universidade Regional de Blumenau, BR 32440 31 46 LONI, US 46115 31 33 LUTHER, US 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 14:85 18:43 23:42 24:7 31:7 35:6 37:9 38:30 40:1 41:131 42:10 44:6 45:49 46:6 47:1 49:10 50:12 52:13 58:1 59:20 60:4 61:3 62:7 63:102 64:123 65:24 66:53 67:63 68:18 69:52 70:3 71:2 72:40 74:64 76:44 77:7 78:3 79:10 80:18 81:27 82:6 83:6 84:5 85:40 86:2 87:6 88:1 89:10 91:41 93:12 94:6 95:4 96:5 97:1 98:4 101:6 102:12 103:293 104:116 107:31 108:9 109:6 110:4 111:9 114:23 116:6 117:61 118:32 119:24 121:26 122:8 123:8 124:39 125:4 128:86 129:43 130:92 131:68 132:54 133:145 134:101 136:197 137:76 138:11 139:5 140:50 141:2 142:51 143:30 144:25 145:2 146:222 147:60 148:193 149:12 150:42 151:9 152:83 153:13 154:28 155:52 156:66 157:23 158:38 159:116 160:30 161:61 162:47 163:62 164:10 165:55 166:3 167:16 168:105 169:10 170:31 172:6 173:12 174:8 175:30 177:11 179:6 180:18 182:4 184:4 185:42 186:3 187:19 188:14 189:3 190:17 191:36 192:1530 193:259 194:127 195:61 196:160 197:137 198:566 199:339 200:182 201:38 202:612 203:433 204:403 205:140 206:222 207:181 208:132 209:140 210:178 211:13 212:172 213:5 214:7 216:105 217:11 218:22 219:6 220:17 222:5 223:4 End of report