IPv4 R&E Routing Table Report 18:35 GMT Sat 08 Mar, 2025 IPv4 BGP Table (R&E) as seen at KENET. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/KENET/ Analysis Summary ---------------- BGP routing table entries examined: 18664 Prefixes after maximum aggregation (per Origin AS): 10383 Deaggregation factor: 1.80 Unique aggregates announced (without unneeded subnets): 11550 Number of IPv4 prefixes with a valid ROA: 7556 Number of IPv4 prefixes with an invalid ROA: 5 Number of IPv4 prefixes with no ROA: 11103 Total ASes present in the Internet Routing Table: 2744 Prefixes per ASN: 6.80 Origin-only ASes present in the Internet Routing Table: 2384 Origin ASes announcing only one prefix: 1046 Transit ASes present in the Internet Routing Table: 360 Transit-only ASes present in the Internet Routing Table: 66 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 5.3 Max AS path length visible: 17 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: 46184 Number of 32-bit ASNs visible in the Routing Table: 679 Prefixes from 32-bit ASNs in the Routing Table: 1846 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: 196769792 Equivalent to 11 /8s, 186 /16s and 120 /24s Percentage of available address space announced: 5.3 Percentage of allocated address space announced: 5.3 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: 2155 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4800 Total APNIC prefixes after maximum aggregation: 2314 APNIC Deaggregation factor: 2.07 Prefixes being announced from the APNIC address blocks: 4799 Unique aggregates announced from the APNIC address blocks: 2690 APNIC Region origin ASes present in the Internet Routing Table: 603 APNIC Prefixes per ASN: 7.96 APNIC Region origin ASes announcing only one prefix: 251 APNIC Region transit ASes present in the Internet Routing Table: 57 Average APNIC Region AS path length visible: 5.6 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 247 Number of APNIC addresses announced to Internet: 45588480 Equivalent to 2 /8s, 183 /16s and 160 /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: 7833 Total ARIN prefixes after maximum aggregation: 4504 ARIN Deaggregation factor: 1.74 Prefixes being announced from the ARIN address blocks: 7850 Unique aggregates announced from the ARIN address blocks: 4999 ARIN Region origin ASes present in the Internet Routing Table: 1250 ARIN Prefixes per ASN: 6.28 ARIN Region origin ASes announcing only one prefix: 444 ARIN Region transit ASes present in the Internet Routing Table: 157 Average ARIN Region AS path length visible: 5.4 Max ARIN Region AS path length visible: 17 Number of ARIN region 32-bit ASNs visible in the Routing Table: 215 Number of ARIN addresses announced to Internet: 87286016 Equivalent to 5 /8s, 51 /16s and 225 /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: 3596 Total RIPE prefixes after maximum aggregation: 2881 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3583 Unique aggregates announced from the RIPE address blocks: 2923 RIPE Region origin ASes present in the Internet Routing Table: 660 RIPE Prefixes per ASN: 5.43 RIPE Region origin ASes announcing only one prefix: 293 RIPE Region transit ASes present in the Internet Routing Table: 104 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 150 Number of RIPE addresses announced to Internet: 58046976 Equivalent to 3 /8s, 117 /16s and 186 /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: 1482 Total LACNIC prefixes after maximum aggregation: 539 LACNIC Deaggregation factor: 2.75 Prefixes being announced from the LACNIC address blocks: 1478 Unique aggregates announced from the LACNIC address blocks: 706 LACNIC Region origin ASes present in the Internet Routing Table: 156 LACNIC Prefixes per ASN: 9.47 LACNIC Region origin ASes announcing only one prefix: 54 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 6.1 Max LACNIC Region AS path length visible: 15 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 64 Number of LACNIC addresses announced to Internet: 4200704 Equivalent to 0 /8s, 64 /16s and 25 /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: 952 Total AfriNIC prefixes after maximum aggregation: 144 AfriNIC Deaggregation factor: 6.61 Prefixes being announced from the AfriNIC address blocks: 952 Unique aggregates announced from the AfriNIC address blocks: 230 AfriNIC Region origin ASes present in the Internet Routing Table: 8 AfriNIC Prefixes per ASN: 119.00 AfriNIC Region origin ASes announcing only one prefix: 4 AfriNIC Region transit ASes present in the Internet Routing Table: 4 Average AfriNIC Region AS path length visible: 1.9 Max AfriNIC Region AS path length visible: 5 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 3 Number of AfriNIC addresses announced to Internet: 1647104 Equivalent to 0 /8s, 25 /16s and 34 /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 624 2170 464 SINET-AS Research Organization of Informa 7497 452 180 24 CSTNET-AS-AP Computer Network Information 1237 193 74 147 KREONET-AS-KR KISTI, KR 58647 183 18 2 KAGAWAU-AS Kagawa University, JP 7575 173 297 116 AARNET-AS-AP Australian Academic and Rese 55824 146 19 20 NKN-CORE-NW NKN Core Network, IN 4538 141 4192 71 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 68 37 9 UNINET-AS-AP UNINET-, TH 1659 61 1466 35 ERX-TANET-ASN1 Taiwan Academic Network TA Complete listing at https://bgp.nsrc.org/REN/KENET/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 376 201 162 151 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 90 34 16 NJEDGE-NET, US 237 85 542 51 MERIT-AS-14, US 1736 79 16 1 MU-AS, US Complete listing at https://bgp.nsrc.org/REN/KENET/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 786 197 1751 186 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 98 1743 84 SURFNET-NL SURFnet, The Netherlands, NL 2614 94 26 73 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog 3267 78 29 68 NIKS, RU 553 75 366 75 BELWUE BelWue-Koordination, DE Complete listing at https://bgp.nsrc.org/REN/KENET/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 61468 53 5 17 CEDIA, EC 4270 52 16 1 Red de Interconexion Universitaria, AR 2715 50 100 36 Fundacao Carlos Chagas Filho de Amparo a 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 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/KENET/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 540 80 59 KENET-AS, KE 2018 381 319 71 TENET-1, ZA 6879 24 2 9 ENSTINET-, EG 328225 3 0 1 Strathmore-University, KE 3208 1 2 1 ARN, DZ 6149 1 0 1 TENET-2, ZA 327945 1 0 1 ILRI, KE 329418 1 0 1 International-Centre-Research-Agroforestr Complete listing at https://bgp.nsrc.org/REN/KENET/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 624 2170 464 SINET-AS Research Organization of Informa 36914 540 80 59 KENET-AS, KE 7497 452 180 24 CSTNET-AS-AP Computer Network Information 2018 381 319 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 376 201 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 786 197 1751 186 JANET Jisc Services Limited, GB 1237 193 74 147 KREONET-AS-KR KISTI, KR Complete listing at https://bgp.nsrc.org/REN/KENET/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 540 481 KENET-AS, KE 7497 452 428 CSTNET-AS-AP Computer Network Information Cente 2018 381 310 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/KENET/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/KENET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U 202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH 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/KENET/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 /12:11 /13:18 /14:35 /15:114 /16:1938 /17:403 /18:439 /19:563 /20:822 /21:849 /22:1405 /23:1515 /24:10549 /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 517 540 KENET-AS, KE 8895 107 110 ISU Internet Services Unit ISU, SA 23024 36 97 OCDE, US 3267 34 78 NIKS, RU 32440 33 58 LONI, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 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/KENET/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:15 8:2 12:2 14:93 23:8 24:3 31:1 35:9 37:8 38:11 40:1 41:177 42:11 44:4 45:44 46:4 47:1 49:12 50:2 59:19 60:6 61:3 62:8 63:32 64:44 65:5 66:42 67:39 68:10 69:17 70:2 71:1 72:8 74:54 76:34 77:10 78:3 79:10 80:13 81:24 82:6 83:8 84:4 85:51 86:5 87:1 89:10 91:42 92:2 93:14 94:2 95:2 96:5 97:1 98:2 102:1 103:370 104:80 108:8 109:5 111:20 113:1 114:24 116:9 117:61 118:33 119:30 121:27 122:8 123:8 124:42 125:5 128:57 129:37 130:95 131:63 132:66 133:157 134:106 136:199 137:51 138:58 139:11 140:31 141:3 142:42 143:18 144:24 145:2 146:136 147:55 148:198 149:12 150:69 151:11 152:137 153:14 154:24 155:63 156:135 157:26 158:29 159:117 160:34 161:19 162:22 163:62 164:11 165:48 167:10 168:119 169:7 170:93 171:1 172:2 173:6 175:16 177:6 179:13 180:16 181:1 182:12 184:6 185:48 186:3 187:24 188:14 189:3 190:33 191:13 192:1396 193:302 194:140 195:82 196:138 197:332 198:450 199:247 200:333 201:37 202:639 203:438 204:366 205:133 206:208 207:221 208:65 209:112 210:223 211:3 212:144 213:4 216:93 217:12 218:23 219:6 220:16 222:2 223:15 End of report