IPv4 R&E Routing Table Report 17:15 GMT Fri 28 Feb, 2025 IPv4 BGP Table (R&E) as seen at Janet. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Janet/ Analysis Summary ---------------- BGP routing table entries examined: 18542 Prefixes after maximum aggregation (per Origin AS): 10257 Deaggregation factor: 1.81 Unique aggregates announced (without unneeded subnets): 11364 Number of IPv4 prefixes with a valid ROA: 7299 Number of IPv4 prefixes with an invalid ROA: 1 Number of IPv4 prefixes with no ROA: 11242 Total ASes present in the Internet Routing Table: 2660 Prefixes per ASN: 6.97 Origin-only ASes present in the Internet Routing Table: 2312 Origin ASes announcing only one prefix: 1032 Transit ASes present in the Internet Routing Table: 348 Transit-only ASes present in the Internet Routing Table: 55 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 4.9 Max AS path length visible: 18 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 1 Number of instances of unregistered ASNs: 1 Number of 32-bit ASNs allocated by the RIRs: 46213 Number of 32-bit ASNs visible in the Routing Table: 646 Prefixes from 32-bit ASNs in the Routing Table: 1767 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: 2 Number of addresses announced to Internet: 199154944 Equivalent to 11 /8s, 222 /16s and 221 /24s Percentage of available address space announced: 5.4 Percentage of allocated address space announced: 5.4 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: 2087 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4638 Total APNIC prefixes after maximum aggregation: 2242 APNIC Deaggregation factor: 2.07 Prefixes being announced from the APNIC address blocks: 4638 Unique aggregates announced from the APNIC address blocks: 2586 APNIC Region origin ASes present in the Internet Routing Table: 565 APNIC Prefixes per ASN: 8.21 APNIC Region origin ASes announcing only one prefix: 242 APNIC Region transit ASes present in the Internet Routing Table: 55 Average APNIC Region AS path length visible: 5.0 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 211 Number of APNIC addresses announced to Internet: 45529856 Equivalent to 2 /8s, 182 /16s and 187 /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, 131072-155961 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: 8067 Total ARIN prefixes after maximum aggregation: 4714 ARIN Deaggregation factor: 1.71 Prefixes being announced from the ARIN address blocks: 8082 Unique aggregates announced from the ARIN address blocks: 5237 ARIN Region origin ASes present in the Internet Routing Table: 1260 ARIN Prefixes per ASN: 6.41 ARIN Region origin ASes announcing only one prefix: 445 ARIN Region transit ASes present in the Internet Routing Table: 151 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 16 Number of ARIN region 32-bit ASNs visible in the Routing Table: 210 Number of ARIN addresses announced to Internet: 90641664 Equivalent to 5 /8s, 103 /16s and 21 /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, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 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: 3217 Total RIPE prefixes after maximum aggregation: 2596 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3205 Unique aggregates announced from the RIPE address blocks: 2620 RIPE Region origin ASes present in the Internet Routing Table: 576 RIPE Prefixes per ASN: 5.56 RIPE Region origin ASes announcing only one prefix: 263 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: 132 Number of RIPE addresses announced to Internet: 56435968 Equivalent to 3 /8s, 93 /16s and 37 /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, 53/8, 57/8, 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: 1469 Total LACNIC prefixes after maximum aggregation: 534 LACNIC Deaggregation factor: 2.75 Prefixes being announced from the LACNIC address blocks: 1466 Unique aggregates announced from the LACNIC address blocks: 701 LACNIC Region origin ASes present in the Internet Routing Table: 154 LACNIC Prefixes per ASN: 9.52 LACNIC Region origin ASes announcing only one prefix: 53 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 5.7 Max LACNIC Region AS path length visible: 14 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 64 Number of LACNIC addresses announced to Internet: 4133632 Equivalent to 0 /8s, 63 /16s and 19 /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: 1150 Total AfriNIC prefixes after maximum aggregation: 170 AfriNIC Deaggregation factor: 6.76 Prefixes being announced from the AfriNIC address blocks: 1149 Unique aggregates announced from the AfriNIC address blocks: 218 AfriNIC Region origin ASes present in the Internet Routing Table: 49 AfriNIC Prefixes per ASN: 23.45 AfriNIC Region origin ASes announcing only one prefix: 29 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 4.5 Max AfriNIC Region AS path length visible: 18 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 29 Number of AfriNIC addresses announced to Internet: 2411520 Equivalent to 0 /8s, 36 /16s and 204 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 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 623 2170 464 SINET-AS Research Organization of Informa 7497 451 180 24 CSTNET-AS-AP Computer Network Information 1237 191 74 145 KREONET-AS-KR KISTI, KR 58647 183 18 2 KAGAWAU-AS Kagawa University, JP 7575 174 297 117 AARNET-AS-AP Australian Academic and Rese 55824 146 19 20 NKN-CORE-NW NKN Core Network, IN 4538 139 4192 70 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 1659 61 1466 35 ERX-TANET-ASN1 Taiwan Academic Network TA 4621 61 35 9 UNINET-AS-AP UNINET-, TH Complete listing at https://bgp.nsrc.org/REN/Janet/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 668 202 646 172 DNIC-AS-00668, US 376 198 162 149 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2920 173 34 7 LACOE, US 2152 149 507 97 CENIC-2152, US 18558 139 18 4 NETBLK-RCOEK, US 81 129 519 34 NCREN, US 23024 97 7 17 OCDE, US 21976 88 34 14 NJEDGE-NET, US 237 85 542 51 MERIT-AS-14, US Complete listing at https://bgp.nsrc.org/REN/Janet/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 284 1899 249 DFN Verein zur Foerderung eines Deutschen 786 191 1748 183 JANET Jisc Services Limited, GB 559 114 533 104 SWITCH Peering requests: peering@switch.c 8895 110 24 5 ISU Internet Services Unit ISU, SA 1103 96 1487 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 94 26 73 ROEDUNET, RO 137 80 676 76 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog 553 75 366 75 BELWUE BelWue-Koordination, DE 2200 64 630 59 FR-RENATER Reseau National de telecommuni Complete listing at https://bgp.nsrc.org/REN/Janet/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 236 178 41 Rede Nacional de Ensino e Pesquisa, BR 28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M 11340 109 25 52 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 4270 53 16 1 Red de Interconexion Universitaria, AR 61468 52 5 17 CEDIA, EC 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 2715 46 99 35 Fundacao Carlos Chagas Filho de Amparo a 28614 38 2 2 Fundacao Universidade Regional de Blumena 1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S Complete listing at https://bgp.nsrc.org/REN/Janet/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 551 82 3 KENET-AS, KE 2018 380 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37215 34 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37661 12 8 4 NRaE1-AS, NG 37501 11 49 6 UOFS, ZA 327700 11 16 1 MoRENet, MZ 327947 9 4 1 KNUST-, GH 36982 8 33 8 UCT, ZA Complete listing at https://bgp.nsrc.org/REN/Janet/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 623 2170 464 SINET-AS Research Organization of Informa 36914 551 82 3 KENET-AS, KE 7497 451 180 24 CSTNET-AS-AP Computer Network Information 2018 380 319 71 TENET-1, ZA 680 284 1899 249 DFN Verein zur Foerderung eines Deutschen 1916 236 178 41 Rede Nacional de Ensino e Pesquisa, BR 668 202 646 172 DNIC-AS-00668, US 376 198 162 149 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 786 191 1748 183 JANET Jisc Services Limited, GB Complete listing at https://bgp.nsrc.org/REN/Janet/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 551 548 KENET-AS, KE 7497 451 427 CSTNET-AS-AP Computer Network Information Cente 2018 380 309 TENET-1, ZA 5786 198 197 UPRENET, PR 1916 236 195 Rede Nacional de Ensino e Pesquisa, BR 58647 183 181 KAGAWAU-AS Kagawa University, JP 2920 173 166 LACOE, US 18558 139 135 NETBLK-RCOEK, US 55824 146 126 NKN-CORE-NW NKN Core Network, IN 8895 110 105 ISU Internet Services Unit ISU, SA Complete listing at https://bgp.nsrc.org/REN/Janet/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 Complete listing at https://bgp.nsrc.org/REN/Janet/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 203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University 203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res Complete listing at https://bgp.nsrc.org/REN/Janet/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 /9:1 /10:1 /11:1 /12:10 /13:18 /14:35 /15:115 /16:1983 /17:414 /18:450 /19:567 /20:820 /21:858 /22:1360 /23:1467 /24:10442 /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 527 551 KENET-AS, KE 8895 107 110 ISU Internet Services Unit ISU, SA 23024 36 97 OCDE, US 32440 33 58 LONI, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 200521 32 57 SEAP-AGE, ES 25977 30 44 HCCS, US 27609 29 45 USC-UNIVERSITY-HOSPITAL, US 40326 29 33 ECKERD-COLLEGE, US Complete listing at https://bgp.nsrc.org/REN/Janet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:15 6:4 8:2 12:1 14:93 23:8 24:2 31:1 35:9 37:8 38:10 40:1 41:221 42:7 44:4 45:45 46:4 47:1 49:12 50:2 52:1 59:19 60:6 61:3 62:6 63:32 64:44 65:5 66:34 67:39 68:10 69:17 70:2 71:1 72:8 74:53 76:34 77:6 78:3 79:10 80:4 81:24 82:3 83:7 84:7 85:30 87:1 89:10 91:39 93:13 94:2 95:2 96:5 97:1 98:2 102:11 103:307 104:80 108:8 109:5 111:21 113:1 114:24 116:7 117:61 118:32 119:30 121:27 122:8 123:8 124:42 125:1 128:57 129:38 130:95 131:62 132:64 133:156 134:109 136:199 137:51 138:58 139:5 140:33 141:3 142:42 143:25 144:26 145:2 146:136 147:54 148:198 149:12 150:69 151:8 152:129 153:14 154:45 155:63 156:135 157:25 158:30 159:117 160:33 161:17 162:22 163:63 164:11 165:48 167:10 168:119 169:7 170:95 172:2 173:6 175:16 177:5 179:13 180:16 181:1 182:9 184:6 185:42 186:3 187:22 188:12 189:3 190:33 191:13 192:1418 193:255 194:101 195:73 196:147 197:336 198:464 199:278 200:331 201:36 202:631 203:432 204:371 205:134 206:211 207:224 208:62 209:116 210:222 211:3 212:146 213:4 214:8 216:91 217:12 218:2 219:6 220:16 222:2 223:15 End of report