IPv4 R&E Routing Table Report 18:35 GMT Sun 02 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: 18663 Prefixes after maximum aggregation (per Origin AS): 10380 Deaggregation factor: 1.80 Unique aggregates announced (without unneeded subnets): 11578 Number of IPv4 prefixes with a valid ROA: 7575 Number of IPv4 prefixes with an invalid ROA: 5 Number of IPv4 prefixes with no ROA: 11083 Total ASes present in the Internet Routing Table: 2748 Prefixes per ASN: 6.79 Origin-only ASes present in the Internet Routing Table: 2389 Origin ASes announcing only one prefix: 1054 Transit ASes present in the Internet Routing Table: 359 Transit-only ASes present in the Internet Routing Table: 65 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: 46224 Number of 32-bit ASNs visible in the Routing Table: 681 Prefixes from 32-bit ASNs in the Routing Table: 1845 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: 196691200 Equivalent to 11 /8s, 185 /16s and 69 /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: 2167 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4799 Total APNIC prefixes after maximum aggregation: 2318 APNIC Deaggregation factor: 2.07 Prefixes being announced from the APNIC address blocks: 4798 Unique aggregates announced from the APNIC address blocks: 2694 APNIC Region origin ASes present in the Internet Routing Table: 605 APNIC Prefixes per ASN: 7.93 APNIC Region origin ASes announcing only one prefix: 254 APNIC Region transit ASes present in the Internet Routing Table: 57 Average APNIC Region AS path length visible: 5.8 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: 45590784 Equivalent to 2 /8s, 183 /16s and 169 /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: 7832 Total ARIN prefixes after maximum aggregation: 4510 ARIN Deaggregation factor: 1.74 Prefixes being announced from the ARIN address blocks: 7847 Unique aggregates announced from the ARIN address blocks: 5009 ARIN Region origin ASes present in the Internet Routing Table: 1253 ARIN Prefixes per ASN: 6.26 ARIN Region origin ASes announcing only one prefix: 446 ARIN Region transit ASes present in the Internet Routing Table: 156 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: 87263744 Equivalent to 5 /8s, 51 /16s and 138 /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: 3590 Total RIPE prefixes after maximum aggregation: 2872 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3577 Unique aggregates announced from the RIPE address blocks: 2930 RIPE Region origin ASes present in the Internet Routing Table: 660 RIPE Prefixes per ASN: 5.42 RIPE Region origin ASes announcing only one prefix: 295 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: 151 Number of RIPE addresses announced to Internet: 57986816 Equivalent to 3 /8s, 116 /16s and 207 /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: 1479 Total LACNIC prefixes after maximum aggregation: 538 LACNIC Deaggregation factor: 2.75 Prefixes being announced from the LACNIC address blocks: 1477 Unique aggregates announced from the LACNIC address blocks: 708 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: 55 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: 65 Number of LACNIC addresses announced to Internet: 4200960 Equivalent to 0 /8s, 64 /16s and 26 /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: 962 Total AfriNIC prefixes after maximum aggregation: 141 AfriNIC Deaggregation factor: 6.82 Prefixes being announced from the AfriNIC address blocks: 962 Unique aggregates announced from the AfriNIC address blocks: 235 AfriNIC Region origin ASes present in the Internet Routing Table: 8 AfriNIC Prefixes per ASN: 120.25 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: 1648384 Equivalent to 0 /8s, 25 /16s and 39 /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 192 74 146 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 140 4192 71 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 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 786 194 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 80 676 76 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 4270 53 16 1 Red de Interconexion Universitaria, AR 61468 53 5 17 CEDIA, EC 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 550 80 56 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 623 2170 464 SINET-AS Research Organization of Informa 36914 550 80 56 KENET-AS, KE 7497 451 180 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 786 194 1751 186 JANET Jisc Services Limited, GB 1237 192 74 146 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 550 494 KENET-AS, KE 7497 451 427 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 /16:1935 /17:403 /18:439 /19:564 /20:820 /21:852 /22:1404 /23:1510 /24:10555 /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 527 550 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 200521 31 56 SEAP-AGE, ES 25977 30 44 HCCS, US 27609 29 45 USC-UNIVERSITY-HOSPITAL, 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 12:1 14:93 23:8 24:3 31:1 35:9 37:8 38:11 40:1 41:183 42:11 44:4 45:47 46:4 47:1 49:12 50:2 52:1 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 98:2 102:1 103:372 104:80 108:8 109:5 111:20 113:1 114:24 116:9 117:61 118:33 119:30 121:27 122:8 123:8 124:42 125:5 128:57 129:37 130:95 131:61 132:65 133:156 134:105 136:199 137:51 138:58 139:5 140:31 141:3 142:42 143:18 144:24 145:2 146:136 147:55 148:198 149:12 150:69 151:11 152:137 153:14 154:24 155:63 156:135 157:26 158:29 159:117 160:34 161:19 162:22 163:62 164:11 165:48 167:10 168:119 169:7 170:96 171:1 172:2 173:6 175:16 177:5 179:10 180:16 181:1 182:12 184:6 185:50 186:3 187:23 188:14 189:3 190:33 191:13 192:1397 193:302 194:139 195:82 196:138 197:336 198:450 199:248 200:333 201:37 202:639 203:438 204:365 205:133 206:208 207:221 208:65 209:113 210:222 211:3 212:146 213:4 216:93 217:12 218:23 219:6 220:16 222:2 223:15 End of report