IPv4 R&E Routing Table Report 22:20 GMT Fri 12 Jul, 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: 18165 Prefixes after maximum aggregation (per Origin AS): 10410 Deaggregation factor: 1.74 Unique aggregates announced (without unneeded subnets): 11486 Number of IPv4 prefixes with a valid ROA: 5372 Number of IPv4 prefixes with an invalid ROA: 0 Number of IPv4 prefixes with no ROA: 12793 Total ASes present in the Internet Routing Table: 2629 Prefixes per ASN: 6.91 Origin-only ASes present in the Internet Routing Table: 2270 Origin ASes announcing only one prefix: 994 Transit ASes present in the Internet Routing Table: 359 Transit-only ASes present in the Internet Routing Table: 68 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.7 Max AS path length visible: 15 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 2 Number of instances of unregistered ASNs: 2 Number of 32-bit ASNs allocated by the RIRs: 44959 Number of 32-bit ASNs visible in the Routing Table: 547 Prefixes from 32-bit ASNs in the Routing Table: 1542 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: 1 Number of addresses announced to Internet: 175608832 Equivalent to 10 /8s, 119 /16s and 148 /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: 2190 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3760 Total APNIC prefixes after maximum aggregation: 1953 APNIC Deaggregation factor: 1.93 Prefixes being announced from the APNIC address blocks: 3760 Unique aggregates announced from the APNIC address blocks: 2185 APNIC Region origin ASes present in the Internet Routing Table: 404 APNIC Prefixes per ASN: 9.31 APNIC Region origin ASes announcing only one prefix: 167 APNIC Region transit ASes present in the Internet Routing Table: 44 Average APNIC Region AS path length visible: 3.6 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 106 Number of APNIC addresses announced to Internet: 35237632 Equivalent to 2 /8s, 25 /16s and 175 /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: 8543 Total ARIN prefixes after maximum aggregation: 4961 ARIN Deaggregation factor: 1.72 Prefixes being announced from the ARIN address blocks: 8554 Unique aggregates announced from the ARIN address blocks: 5503 ARIN Region origin ASes present in the Internet Routing Table: 1305 ARIN Prefixes per ASN: 6.55 ARIN Region origin ASes announcing only one prefix: 459 ARIN Region transit ASes present in the Internet Routing Table: 165 Average ARIN Region AS path length visible: 3.6 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 214 Number of ARIN addresses announced to Internet: 79794944 Equivalent to 4 /8s, 193 /16s and 147 /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: 3479 Total RIPE prefixes after maximum aggregation: 2819 RIPE Deaggregation factor: 1.23 Prefixes being announced from the RIPE address blocks: 3471 Unique aggregates announced from the RIPE address blocks: 2896 RIPE Region origin ASes present in the Internet Routing Table: 666 RIPE Prefixes per ASN: 5.21 RIPE Region origin ASes announcing only one prefix: 299 RIPE Region transit ASes present in the Internet Routing Table: 101 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: 153 Number of RIPE addresses announced to Internet: 54028800 Equivalent to 3 /8s, 56 /16s and 106 /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: 1344 Total LACNIC prefixes after maximum aggregation: 525 LACNIC Deaggregation factor: 2.56 Prefixes being announced from the LACNIC address blocks: 1343 Unique aggregates announced from the LACNIC address blocks: 708 LACNIC Region origin ASes present in the Internet Routing Table: 155 LACNIC Prefixes per ASN: 8.66 LACNIC Region origin ASes announcing only one prefix: 56 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 4.5 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 65 Number of LACNIC addresses announced to Internet: 4128256 Equivalent to 0 /8s, 62 /16s and 254 /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: 1037 Total AfriNIC prefixes after maximum aggregation: 150 AfriNIC Deaggregation factor: 6.91 Prefixes being announced from the AfriNIC address blocks: 1036 Unique aggregates announced from the AfriNIC address blocks: 193 AfriNIC Region origin ASes present in the Internet Routing Table: 29 AfriNIC Prefixes per ASN: 35.72 AfriNIC Region origin ASes announcing only one prefix: 13 AfriNIC Region transit ASes present in the Internet Routing Table: 7 Average AfriNIC Region AS path length visible: 4.0 Max AfriNIC Region AS path length visible: 9 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 9 Number of AfriNIC addresses announced to Internet: 2417152 Equivalent to 0 /8s, 36 /16s and 226 /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 591 2162 464 SINET-AS Research Organization of Informa 7497 446 180 24 CSTNET-AS-AP Computer Network Information 1237 191 74 142 KREONET-AS-KR KISTI, KR 58647 183 18 2 KAGAWAU-AS Kagawa University, JP 7575 169 329 113 AARNET-AS-AP Australian Academic and Rese 4538 111 2384 69 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 69 37 10 UNINET-AS-AP UNINET-, TH 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR 9317 49 16 1 ITISNET-AS INHA UNIVERSITY, 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 668 203 632 172 DNIC-AS-00668, US 376 202 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2920 176 34 7 LACOE, US 270 160 345 86 AS270, US 2152 149 507 96 CENIC-2152, US 18558 140 18 4 NETBLK-RCOEK, US 81 132 469 34 NCREN, US 23024 96 7 21 OCDE, US 237 89 544 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 680 283 1899 250 DFN Verein zur Foerderung eines Deutschen 786 184 1767 181 JANET Jisc Services Limited, GB 8895 135 24 4 ISU Internet Services Unit ISU, SA 559 113 533 103 SWITCH Peering requests: peering@switch.c 1103 95 1247 82 SURFNET-NL SURFnet, The Netherlands, NL 2614 91 26 71 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog 553 78 462 78 BELWUE BelWue-Koordination, DE 3267 76 26 66 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 28391 153 10 67 Universidad Juarez Autonoma de Tabasco, M 1916 141 176 42 Rede Nacional de Ensino e Pesquisa, BR 11340 109 25 52 Red Universitaria Nacional, CL 271640 66 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 4270 46 16 1 Red de Interconexion Universitaria, AR 61468 45 5 15 CEDIA, EC 2715 43 99 32 Fundacao Carlos Chagas Filho de Amparo a 28614 38 2 2 Fundacao Universidade Regional de Blumena 3596 37 8 4 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 36914 450 82 3 KENET-AS, KE 2018 381 319 71 TENET-1, ZA 327700 48 16 1 MoRENet, MZ 8094 47 48 18 PUKNET, ZA 6879 24 2 9 ENSTINET-, EG 37661 13 8 5 NRaE1-AS, NG 37182 11 8 1 TERNET, TZ 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 37215 8 8 1 MAREN, MW 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 591 2162 464 SINET-AS Research Organization of Informa 36914 450 82 3 KENET-AS, KE 7497 446 180 24 CSTNET-AS-AP Computer Network Information 2018 381 319 71 TENET-1, ZA 680 283 1899 250 DFN Verein zur Foerderung eines Deutschen 668 203 632 172 DNIC-AS-00668, US 376 202 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 1237 191 74 142 KREONET-AS-KR KISTI, KR 786 184 1767 181 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 36914 450 447 KENET-AS, KE 7497 446 422 CSTNET-AS-AP Computer Network Information Cente 2018 381 310 TENET-1, ZA 5786 198 197 UPRENET, PR 58647 183 181 KAGAWAU-AS Kagawa University, JP 2920 176 169 LACOE, US 18558 140 136 NETBLK-RCOEK, US 8895 135 131 ISU Internet Services Unit ISU, SA 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 26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US 22272 UNALLOCATED 206.208.24.0/21 6325 ILLINOIS-CENTURY, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 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 /14:35 /15:118 /16:2019 /17:425 /18:444 /19:561 /20:872 /21:874 /22:1395 /23:1486 /24:9936 /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 440 450 KENET-AS, KE 8895 130 135 ISU Internet Services Unit ISU, SA 327700 42 48 MoRENet, MZ 23024 38 96 OCDE, US 32440 36 62 LONI, US 3267 35 76 RUNNET, RU 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 200521 32 54 SEAP-AGE, ES 18632 31 64 VOLCANO-VISION, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1 5:15 6:4 8:5 12:2 18:43 23:8 24:3 31:1 35:9 38:11 40:1 41:180 42:10 44:5 45:36 46:5 47:1 49:4 50:5 52:1 58:1 59:3 60:6 61:3 62:6 63:37 64:44 65:19 66:47 67:44 68:19 69:19 70:2 71:1 72:7 74:52 76:40 77:10 78:3 79:10 80:14 81:25 82:6 83:7 84:5 85:42 86:2 87:1 89:11 91:42 92:2 93:5 94:2 95:2 96:5 97:3 98:2 101:1 102:5 103:99 104:77 107:14 108:6 109:4 114:24 116:6 117:61 118:1 119:22 121:10 123:8 124:42 125:5 128:84 129:40 130:95 131:62 132:67 133:158 134:108 136:197 137:51 138:57 139:5 140:33 141:3 142:25 143:25 144:6 145:2 146:135 147:58 148:194 149:11 150:35 151:11 152:133 153:14 154:37 155:59 156:139 157:19 158:5 159:121 160:30 161:15 162:31 163:59 164:13 165:48 166:2 167:13 168:121 169:6 170:105 171:1 172:3 173:6 174:1 175:4 177:6 179:13 180:1 181:1 182:1 184:6 185:49 186:3 187:17 188:13 189:3 190:18 191:13 192:1498 193:255 194:123 195:65 196:147 197:313 198:514 199:289 200:250 201:36 202:535 203:405 204:376 205:137 206:200 207:206 208:72 209:123 210:183 211:13 212:163 213:6 214:8 216:89 217:9 218:22 219:5 220:13 222:2 223:4 End of report