IPv4 R&E Routing Table Report 22:20 GMT Wed 01 May, 2024 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: 17913 Prefixes after maximum aggregation (per Origin AS): 10471 Deaggregation factor: 1.71 Unique aggregates announced (without unneeded subnets): 11507 Number of IPv4 prefixes with a valid ROA: 5463 Number of IPv4 prefixes with an invalid ROA: 16 Number of IPv4 prefixes with no ROA: 12434 Total ASes present in the Internet Routing Table: 2706 Prefixes per ASN: 6.62 Origin-only ASes present in the Internet Routing Table: 2350 Origin ASes announcing only one prefix: 1048 Transit ASes present in the Internet Routing Table: 356 Transit-only ASes present in the Internet Routing Table: 62 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.6 Max AS path length visible: 14 Max AS path prepend of ASN ( 47805) 11 Prefixes from unregistered ASNs in the Routing Table: 16 Number of instances of unregistered ASNs: 16 Number of 32-bit ASNs allocated by the RIRs: 44332 Number of 32-bit ASNs visible in the Routing Table: 627 Prefixes from 32-bit ASNs in the Routing Table: 1714 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 0 Number of addresses announced to Internet: 175641856 Equivalent to 10 /8s, 120 /16s and 21 /24s Percentage of available address space announced: 4.7 Percentage of allocated address space announced: 4.7 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: 1766 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4225 Total APNIC prefixes after maximum aggregation: 2152 APNIC Deaggregation factor: 1.96 Prefixes being announced from the APNIC address blocks: 4226 Unique aggregates announced from the APNIC address blocks: 2411 APNIC Region origin ASes present in the Internet Routing Table: 499 APNIC Prefixes per ASN: 8.47 APNIC Region origin ASes announcing only one prefix: 219 APNIC Region transit ASes present in the Internet Routing Table: 47 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: 188 Number of APNIC addresses announced to Internet: 35525888 Equivalent to 2 /8s, 30 /16s and 21 /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, 131072-153913 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: 8438 Total ARIN prefixes after maximum aggregation: 4911 ARIN Deaggregation factor: 1.72 Prefixes being announced from the ARIN address blocks: 8463 Unique aggregates announced from the ARIN address blocks: 5471 ARIN Region origin ASes present in the Internet Routing Table: 1298 ARIN Prefixes per ASN: 6.52 ARIN Region origin ASes announcing only one prefix: 462 ARIN Region transit ASes present in the Internet Routing Table: 164 Average ARIN Region AS path length visible: 3.6 Max ARIN Region AS path length visible: 14 Number of ARIN region 32-bit ASNs visible in the Routing Table: 216 Number of ARIN addresses announced to Internet: 79881472 Equivalent to 4 /8s, 194 /16s and 229 /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, 393216-402332 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: 3474 Total RIPE prefixes after maximum aggregation: 2797 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3465 Unique aggregates announced from the RIPE address blocks: 2880 RIPE Region origin ASes present in the Internet Routing Table: 661 RIPE Prefixes per ASN: 5.24 RIPE Region origin ASes announcing only one prefix: 297 RIPE Region transit ASes present in the Internet Routing Table: 97 Average RIPE Region AS path length visible: 3.6 Max RIPE Region AS path length visible: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 149 Number of RIPE addresses announced to Internet: 53974784 Equivalent to 3 /8s, 55 /16s and 151 /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 196608-216475 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: 1162 Total LACNIC prefixes after maximum aggregation: 451 LACNIC Deaggregation factor: 2.58 Prefixes being announced from the LACNIC address blocks: 1161 Unique aggregates announced from the LACNIC address blocks: 550 LACNIC Region origin ASes present in the Internet Routing Table: 153 LACNIC Prefixes per ASN: 7.59 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: 4.3 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 64 Number of LACNIC addresses announced to Internet: 4169984 Equivalent to 0 /8s, 63 /16s and 161 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 598 Total AfriNIC prefixes after maximum aggregation: 146 AfriNIC Deaggregation factor: 4.10 Prefixes being announced from the AfriNIC address blocks: 598 Unique aggregates announced from the AfriNIC address blocks: 195 AfriNIC Region origin ASes present in the Internet Routing Table: 29 AfriNIC Prefixes per ASN: 20.62 AfriNIC Region origin ASes announcing only one prefix: 15 AfriNIC Region transit ASes present in the Internet Routing Table: 6 Average AfriNIC Region AS path length visible: 2.6 Max AfriNIC Region AS path length visible: 10 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 10 Number of AfriNIC addresses announced to Internet: 2089728 Equivalent to 0 /8s, 31 /16s and 227 /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 590 2162 464 SINET-AS Research Organization of Infor 7497 443 180 24 CSTNET-AS-AP Computer Network Informati 1237 184 74 139 KREONET-AS-KR KISTI, KR 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 169 329 113 AARNET-AS-AP Australian Academic and Re 55824 130 19 19 NKN-CORE-NW NKN Core Network, IN 4538 111 2384 69 ERX-CERNET-BKB China Education and Rese 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, T 4621 70 37 10 UNINET-AS-AP UNINET-, TH 9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T 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 668 203 648 172 DNIC-AS-00668, US 376 201 162 151 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 2920 174 34 7 LACOE, US 270 159 345 85 AS270, US 2152 151 507 96 CSUNET-NW, US 18558 140 18 4 NETBLK-RCOEK, US 81 132 469 34 NCREN, US 23024 108 7 22 OCDE, US 237 90 544 55 MERIT-AS-14, 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 680 284 1899 250 DFN Verein zur Foerderung eines Deutsch 786 186 1767 183 JANET Jisc Services Limited, GB 8895 133 24 4 ISU Internet Services Unit ISU, SA 559 113 533 103 SWITCH Peering requests: peering@switch 1103 94 1247 82 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 27 73 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnol 553 78 462 78 BELWUE BelWue-Koordination, DE 3267 77 27 65 RUNNET, RU 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 141 176 42 Rede Nacional de Ensino e Pesquisa, BR 11340 108 25 51 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 4270 48 16 1 Red de Interconexion Universitaria, AR 2715 43 99 32 Fundacao Carlos Chagas Filho de Amparo 61468 43 3 14 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 19611 37 17 2 Associacao Antonio Vieira - Unisinos, B 1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 3596 34 2 2 Universidad Autonoma Metropolitana, MX 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 380 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 327700 44 16 1 MoRENet, MZ 37215 36 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37654 13 1 7 RwEdNet-AS, RW 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 31960 5 1 1 EMUNET, MZ 37182 4 8 1 TERNET, TZ 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 590 2162 464 SINET-AS Research Organization of Infor 7497 443 180 24 CSTNET-AS-AP Computer Network Informati 2018 380 319 71 TENET-1, ZA 680 284 1899 250 DFN Verein zur Foerderung eines Deutsch 668 203 648 172 DNIC-AS-00668, US 376 201 162 151 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 786 186 1767 183 JANET Jisc Services Limited, GB 1237 184 74 139 KREONET-AS-KR KISTI, KR 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 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 443 419 CSTNET-AS-AP Computer Network Information Cente 2018 380 309 TENET-1, ZA 5786 197 196 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 2920 174 167 LACOE, US 18558 140 136 NETBLK-RCOEK, US 8895 133 129 ISU Internet Services Unit ISU, SA 55824 130 111 NKN-CORE-NW NKN Core Network, IN 1916 141 99 Rede Nacional de Ensino e Pesquisa, BR 81 132 98 NCREN, 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 11570 UNALLOCATED 63.225.1.0/24 40498 ABQG, US 394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US 18838 UNALLOCATED 168.8.240.0/20 3480 PEACHNET-AS3480, US 18838 UNALLOCATED 168.9.0.0/20 3480 PEACHNET-AS3480, US 11570 UNALLOCATED 192.94.216.0/24 40498 ABQG, US 11570 UNALLOCATED 192.207.226.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.106.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.107.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.108.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.188.0/24 40498 ABQG, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS 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 /14:34 /15:121 /16:2019 /17:426 /18:446 /19:565 /20:860 /21:882 /22:1475 /23:1519 /24:9566 /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 8895 128 133 ISU Internet Services Unit ISU, SA 23024 51 108 OCDE, US 32440 38 63 LONI, US 327700 38 44 MoRENet, MZ 3267 36 77 RUNNET, RU 18632 33 66 VOLCANO-VISION, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 200521 32 54 SEAP-AGE, ES 25977 30 44 HCCS, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:15 6:4 8:5 12:2 14:90 18:43 23:8 24:3 31:1 35:8 38:11 40:1 41:71 42:10 44:4 45:32 46:5 47:1 49:7 50:6 52:1 59:3 60:6 61:3 62:7 63:37 64:43 65:5 66:57 67:44 68:21 69:18 70:2 71:1 72:7 74:53 76:42 77:11 78:3 79:10 80:12 81:26 82:7 83:7 84:4 85:40 86:2 87:1 89:10 91:43 92:2 93:4 94:2 95:2 97:3 98:2 101:2 102:5 103:214 104:78 107:16 108:8 109:4 114:24 116:6 117:61 118:1 119:20 121:11 123:8 124:42 125:5 128:89 129:38 130:86 131:62 132:65 133:156 134:110 136:196 137:50 138:57 139:5 140:38 141:3 142:20 143:24 144:28 145:2 146:135 147:59 148:41 149:10 150:39 151:12 152:133 153:13 154:32 155:60 156:137 157:18 158:34 159:115 160:34 161:15 162:30 163:64 164:13 165:49 166:2 167:9 168:121 169:6 170:107 171:1 172:3 173:7 174:1 175:16 177:6 179:12 180:15 181:1 182:1 184:2 185:49 186:3 187:18 188:13 189:3 190:17 191:13 192:1498 193:257 194:125 195:65 196:153 198:481 199:284 200:242 201:36 202:565 203:405 204:377 205:135 206:192 207:161 208:76 209:118 210:176 211:13 212:169 213:6 214:8 216:92 217:9 218:22 219:5 220:17 222:2 223:4 End of report