IPv4 R&E Routing Table Report 18:30 GMT Sat 15 Feb, 2025 IPv4 BGP Table (R&E) as seen at TENET. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/TENET/ Analysis Summary ---------------- BGP routing table entries examined: 16638 Prefixes after maximum aggregation (per Origin AS): 8432 Deaggregation factor: 1.97 Unique aggregates announced (without unneeded subnets): 9563 Number of IPv4 prefixes with a valid ROA: 5876 Number of IPv4 prefixes with an invalid ROA: 2 Number of IPv4 prefixes with no ROA: 10760 Total ASes present in the Internet Routing Table: 2264 Prefixes per ASN: 7.35 Origin-only ASes present in the Internet Routing Table: 1971 Origin ASes announcing only one prefix: 839 Transit ASes present in the Internet Routing Table: 293 Transit-only ASes present in the Internet Routing Table: 61 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 4.6 Max AS path length visible: 16 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: 46137 Number of 32-bit ASNs visible in the Routing Table: 525 Prefixes from 32-bit ASNs in the Routing Table: 1487 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: 157525248 Equivalent to 9 /8s, 99 /16s and 165 /24s Percentage of available address space announced: 4.3 Percentage of allocated address space announced: 4.3 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: 1774 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4689 Total APNIC prefixes after maximum aggregation: 2266 APNIC Deaggregation factor: 2.07 Prefixes being announced from the APNIC address blocks: 4688 Unique aggregates announced from the APNIC address blocks: 2621 APNIC Region origin ASes present in the Internet Routing Table: 568 APNIC Prefixes per ASN: 8.25 APNIC Region origin ASes announcing only one prefix: 244 APNIC Region transit ASes present in the Internet Routing Table: 58 Average APNIC Region AS path length visible: 4.9 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 212 Number of APNIC addresses announced to Internet: 45549824 Equivalent to 2 /8s, 183 /16s and 9 /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: 8552 Total ARIN prefixes after maximum aggregation: 4866 ARIN Deaggregation factor: 1.76 Prefixes being announced from the ARIN address blocks: 8560 Unique aggregates announced from the ARIN address blocks: 5376 ARIN Region origin ASes present in the Internet Routing Table: 1268 ARIN Prefixes per ASN: 6.75 ARIN Region origin ASes announcing only one prefix: 448 ARIN Region transit ASes present in the Internet Routing Table: 159 Average ARIN Region AS path length visible: 4.5 Max ARIN Region AS path length visible: 16 Number of ARIN region 32-bit ASNs visible in the Routing Table: 207 Number of ARIN addresses announced to Internet: 91703808 Equivalent to 5 /8s, 119 /16s and 74 /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: 878 Total RIPE prefixes after maximum aggregation: 621 RIPE Deaggregation factor: 1.41 Prefixes being announced from the RIPE address blocks: 872 Unique aggregates announced from the RIPE address blocks: 670 RIPE Region origin ASes present in the Internet Routing Table: 188 RIPE Prefixes per ASN: 4.64 RIPE Region origin ASes announcing only one prefix: 84 RIPE Region transit ASes present in the Internet Routing Table: 27 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 11 Number of RIPE region 32-bit ASNs visible in the Routing Table: 33 Number of RIPE addresses announced to Internet: 13837056 Equivalent to 0 /8s, 211 /16s and 35 /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: 1473 Total LACNIC prefixes after maximum aggregation: 537 LACNIC Deaggregation factor: 2.74 Prefixes being announced from the LACNIC address blocks: 1471 Unique aggregates announced from the LACNIC address blocks: 705 LACNIC Region origin ASes present in the Internet Routing Table: 155 LACNIC Prefixes per ASN: 9.49 LACNIC Region origin ASes announcing only one prefix: 55 LACNIC Region transit ASes present in the Internet Routing Table: 24 Average LACNIC Region AS path length visible: 4.6 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: 4193280 Equivalent to 0 /8s, 63 /16s and 252 /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: 1045 Total AfriNIC prefixes after maximum aggregation: 141 AfriNIC Deaggregation factor: 7.41 Prefixes being announced from the AfriNIC address blocks: 1045 Unique aggregates announced from the AfriNIC address blocks: 189 AfriNIC Region origin ASes present in the Internet Routing Table: 23 AfriNIC Prefixes per ASN: 45.43 AfriNIC Region origin ASes announcing only one prefix: 8 AfriNIC Region transit ASes present in the Internet Routing Table: 7 Average AfriNIC Region AS path length visible: 4.4 Max AfriNIC Region AS path length visible: 9 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 8 Number of AfriNIC addresses announced to Internet: 2240768 Equivalent to 0 /8s, 34 /16s and 49 /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 622 2168 463 SINET-AS Research Organization of Informa 7497 450 180 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 173 297 116 AARNET-AS-AP Australian Academic and Rese 55824 147 19 21 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 2697 59 4 34 ERX-ERNET-AS Education and Research Netwo Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 2152 416 507 98 CENIC-2152, US 2920 221 44 45 LACOE, US 668 210 647 178 DNIC-AS-00668, US 376 202 162 151 RISQ-AS, CA 5786 186 16 1 UPRENET, PR 18558 140 18 5 NETBLK-RCOEK, US 81 129 519 34 NCREN, US 270 117 328 81 AS270, US 23024 97 7 17 OCDE, US 21976 90 34 16 NJEDGE-NET, US Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8895 110 24 5 ISU Internet Services Unit ISU, SA 1103 98 1743 84 SURFNET-NL SURFnet, The Netherlands, NL 3267 78 29 68 NIKS, RU 1653 50 150 48 SUNET SUNET Swedish University Network, E 1741 39 149 18 FUNETAS, FI 3218 39 3 24 COSMOS-3218-AS AS-COSMOS root, RU 8674 16 2 11 NETNOD-IX Netnod AB, SE 1880 14 1 7 STUPI, SE 224 13 256 13 UNINETT UNINETT, The Norwegian University 1101 12 465 12 IP-EEND-AS IP-EEND BV, NL Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 236 178 42 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 2715 49 99 35 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/TENET/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 471 82 3 KENET-AS, KE 2018 374 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37182 36 8 1 TERNET, TZ 37215 34 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37501 11 49 6 UOFS, ZA 327700 10 16 1 MoRENet, MZ 36982 8 33 8 UCT, ZA 37654 8 1 5 RwEdNet-AS, RW Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 622 2168 463 SINET-AS Research Organization of Informa 36914 471 82 3 KENET-AS, KE 7497 450 180 24 CSTNET-AS-AP Computer Network Information 2152 416 507 98 CENIC-2152, US 2018 374 319 71 TENET-1, ZA 1916 236 178 42 Rede Nacional de Ensino e Pesquisa, BR 2920 221 44 45 LACOE, US 668 210 647 178 DNIC-AS-00668, US 376 202 162 151 RISQ-AS, CA 1237 192 74 146 KREONET-AS-KR KISTI, KR Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 471 468 KENET-AS, KE 7497 450 426 CSTNET-AS-AP Computer Network Information Cente 2152 416 318 CENIC-2152, US 2018 374 303 TENET-1, ZA 1916 236 194 Rede Nacional de Ensino e Pesquisa, BR 5786 186 185 UPRENET, PR 58647 183 181 KAGAWAU-AS Kagawa University, JP 2920 221 176 LACOE, US 18558 140 135 NETBLK-RCOEK, US 55824 147 126 NKN-CORE-NW NKN Core Network, IN Complete listing at https://bgp.nsrc.org/REN/TENET/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/TENET/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/TENET/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 /13:17 /14:30 /15:87 /16:1462 /17:364 /18:407 /19:490 /20:746 /21:700 /22:1163 /23:1315 /24:9844 /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 458 471 KENET-AS, KE 8895 107 110 ISU Internet Services Unit ISU, SA 2152 45 416 CENIC-2152, US 23024 36 97 OCDE, US 37182 35 36 TERNET, TZ 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 Complete listing at https://bgp.nsrc.org/REN/TENET/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 4:2 6:4 8:2 12:1 14:93 23:9 24:3 35:14 38:11 40:1 41:192 42:11 44:3 45:41 47:1 49:11 50:2 52:1 59:19 60:6 61:3 62:3 63:32 64:44 65:5 66:41 67:39 68:10 69:17 70:2 71:1 72:8 74:50 76:34 77:7 80:5 81:1 82:4 83:1 84:1 85:20 86:5 87:1 89:1 91:6 92:2 93:1 96:5 97:1 98:2 102:3 103:300 104:80 108:10 109:4 111:21 113:1 114:24 116:9 117:61 118:33 119:30 121:27 122:8 123:8 124:42 125:5 128:56 129:30 130:96 131:60 132:64 133:156 134:103 136:186 137:86 138:57 139:5 140:33 141:3 142:41 143:23 144:24 146:135 147:56 148:191 149:13 150:69 151:9 152:136 153:3 154:36 155:63 156:129 157:25 158:30 159:116 160:31 161:17 162:24 163:62 164:11 165:49 167:26 168:119 169:7 170:96 171:1 172:2 173:6 175:16 177:6 179:9 180:16 181:1 182:11 184:6 185:14 186:3 187:22 188:3 189:5 190:34 191:13 192:1096 193:66 194:55 195:30 196:145 197:335 198:553 199:278 200:332 201:37 202:642 203:436 204:385 205:166 206:211 207:271 208:65 209:153 210:222 211:3 212:106 213:2 214:9 216:93 218:23 219:6 220:16 222:2 223:15 End of report