IPv4 R&E Routing Table Report 22:20 GMT Fri 22 Jul, 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: 20062 Prefixes after maximum aggregation (per Origin AS): 11785 Deaggregation factor: 1.70 Unique aggregates announced (without unneeded subnets): 13245 Number of IPv4 prefixes with a valid ROA: 4518 Number of IPv4 prefixes with an invalid ROA: 51 Number of IPv4 prefixes with no ROA: 15493 Total ASes present in the Internet Routing Table: 3028 Prefixes per ASN: 6.63 Origin-only ASes present in the Internet Routing Table: 2609 Origin ASes announcing only one prefix: 1187 Transit ASes present in the Internet Routing Table: 419 Transit-only ASes present in the Internet Routing Table: 73 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: 39842 Number of 32-bit ASNs visible in the Routing Table: 678 Prefixes from 32-bit ASNs in the Routing Table: 1870 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: 180719104 Equivalent to 10 /8s, 197 /16s and 142 /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: 2618 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4559 Total APNIC prefixes after maximum aggregation: 2259 APNIC Deaggregation factor: 2.02 Prefixes being announced from the APNIC address blocks: 4546 Unique aggregates announced from the APNIC address blocks: 2599 APNIC Region origin ASes present in the Internet Routing Table: 563 APNIC Prefixes per ASN: 8.07 APNIC Region origin ASes announcing only one prefix: 240 APNIC Region transit ASes present in the Internet Routing Table: 67 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 16 Number of APNIC region 32-bit ASNs visible in the Routing Table: 217 Number of APNIC addresses announced to Internet: 36117248 Equivalent to 2 /8s, 39 /16s and 27 /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: 9786 Total ARIN prefixes after maximum aggregation: 5994 ARIN Deaggregation factor: 1.63 Prefixes being announced from the ARIN address blocks: 9731 Unique aggregates announced from the ARIN address blocks: 6758 ARIN Region origin ASes present in the Internet Routing Table: 1516 ARIN Prefixes per ASN: 6.42 ARIN Region origin ASes announcing only one prefix: 556 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: 236 Number of ARIN addresses announced to Internet: 83362816 Equivalent to 4 /8s, 248 /16s and 4 /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: 3426 Total RIPE prefixes after maximum aggregation: 2794 RIPE Deaggregation factor: 1.23 Prefixes being announced from the RIPE address blocks: 3519 Unique aggregates announced from the RIPE address blocks: 2915 RIPE Region origin ASes present in the Internet Routing Table: 663 RIPE Prefixes per ASN: 5.31 RIPE Region origin ASes announcing only one prefix: 305 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: 54377984 Equivalent to 3 /8s, 61 /16s and 190 /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: 1396 Total LACNIC prefixes after maximum aggregation: 556 LACNIC Deaggregation factor: 2.51 Prefixes being announced from the LACNIC address blocks: 1393 Unique aggregates announced from the LACNIC address blocks: 747 LACNIC Region origin ASes present in the Internet Routing Table: 161 LACNIC Prefixes per ASN: 8.65 LACNIC Region origin ASes announcing only one prefix: 64 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: 4220160 Equivalent to 0 /8s, 64 /16s and 101 /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: 871 Total AfriNIC prefixes after maximum aggregation: 169 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 871 Unique aggregates announced from the AfriNIC address blocks: 224 AfriNIC Region origin ASes present in the Internet Routing Table: 46 AfriNIC Prefixes per ASN: 18.93 AfriNIC Region origin ASes announcing only one prefix: 22 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 3.2 Max AfriNIC Region AS path length visible: 10 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 24 Number of AfriNIC addresses announced to Internet: 2640384 Equivalent to 0 /8s, 40 /16s and 74 /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 568 2124 451 SINET-AS Research Organization of Infor 7497 432 182 24 CSTNET-AS-AP Computer Network Informati 1237 185 74 134 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 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 88 CSUNET-NW, US 18558 134 18 4 NETBLK-RCOEK, US 11404 124 177 105 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 680 283 1951 250 DFN Verein zur Foerderung eines Deutsch 786 185 1774 182 JANET Jisc Services Limited, GB 8895 137 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 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 64 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 59 102 39 Fundacao Carlos Chagas Filho de Amparo 4270 43 16 1 Red de Interconexion Universitaria, AR 28571 41 40 18 UNIVERSIDADE DE SAO PAULO, BR 61468 41 3 15 CEDIA, EC 19611 37 17 2 Associacao Antonio Vieira - Unisinos, B 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 376 319 72 TENET-1, ZA 36914 227 82 3 KENET-AS, KE 8094 48 48 15 PUKNET, ZA 327687 38 28 3 RENU, UG 327700 33 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37074 13 8 2 UG-AS, GH 37182 11 8 1 TERNET, TZ 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 568 2124 451 SINET-AS Research Organization of Infor 7497 432 182 24 CSTNET-AS-AP Computer Network Informati 2018 376 319 72 TENET-1, ZA 680 283 1951 250 DFN Verein zur Foerderung eines Deutsch 36914 227 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 432 408 CSTNET-AS-AP Computer Network Information Cente 2018 376 304 TENET-1, ZA 36914 227 224 KENET-AS, KE 5786 200 199 UPRENET, PR 58647 175 173 KAGAWAU-AS Kagawa University, JP 8895 137 134 ISU Internet Services Unit ISU, SA 18558 134 130 NETBLK-RCOEK, US 1916 152 113 Rede Nacional de Ensino e Pesquisa, BR 55824 116 105 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 /18:455 /19:613 /20:954 /21:990 /22:1634 /23:1753 /24:11035 /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 214 227 KENET-AS, KE 8895 132 137 ISU Internet Services Unit ISU, SA 30041 65 68 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 46115 31 33 LUTHER, US 200521 31 52 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 37:3 38:30 40:1 41:120 42:10 44:6 45:48 46:6 47:1 49:10 50:12 52:6 58:1 59:20 60:4 61:3 62:5 63:102 64:123 65:12 66:54 67:65 68:18 69:52 70:1 71:1 72:43 74:64 76:43 77:7 78:3 79:10 80:18 81:28 82:6 83:6 84:5 85:40 86:2 87:6 88:1 89:10 91:41 93:6 94:6 95:4 96:5 97:1 98:4 101:6 102:12 103:302 104:114 107:31 108:9 109:5 110:4 111:16 114:23 116:6 117:61 118:32 119:24 121:27 122:8 123:8 124:39 125:5 128:86 129:43 130:92 131:67 132:58 133:145 134:101 136:199 137:76 138:9 139:5 140:50 141:2 142:53 143:31 144:25 145:2 146:222 147:61 148:193 149:12 150:42 151:9 152:84 153:13 154:29 155:55 156:67 157:28 158:41 159:116 160:31 161:61 162:47 163:61 164:15 165:55 166:3 167:16 168:124 169:10 170:72 172:6 173:12 174:8 175:31 177:11 179:9 180:19 182:4 184:3 185:42 186:3 187:19 188:14 189:3 190:33 191:36 192:1535 193:261 194:127 195:61 196:162 197:131 198:561 199:338 200:226 201:38 202:617 203:435 204:403 205:141 206:219 207:182 208:126 209:138 210:178 211:13 212:173 213:5 214:7 216:102 217:11 218:22 219:6 220:17 222:5 223:3 End of report