IPv4 R&E Routing Table Report 20:20 GMT Sun 25 Jan, 2026 IPv4 BGP Table (R&E) as seen at Erdemnet. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Erdemnet/ Analysis Summary ---------------- BGP routing table entries examined: 22509 Prefixes after maximum aggregation (per Origin AS): 12523 Deaggregation factor: 1.80 Unique aggregates announced (without unneeded subnets): 11995 Number of IPv4 prefixes with a valid ROA: 8563 Number of IPv4 prefixes with an invalid ROA: 2785 Number of IPv4 prefixes with no ROA: 11161 Total ASes present in the Internet Routing Table: 2813 Prefixes per ASN: 8.00 Origin-only ASes present in the Internet Routing Table: 2423 Origin ASes announcing only one prefix: 1088 Transit ASes present in the Internet Routing Table: 390 Transit-only ASes present in the Internet Routing Table: 69 Paths with bogon ASNs present in the IPv4 Routing Table: 2319 Average AS path length visible in the Internet Routing Table: 5.6 Max AS path length visible: 35 Max AS path prepend of ASN (152692) 32 Prefixes from unregistered ASNs in the Routing Table: 2330 Number of instances of unregistered ASNs: 2330 Number of 32-bit ASNs allocated by the RIRs: 48503 Number of 32-bit ASNs visible in the Routing Table: 730 Prefixes from 32-bit ASNs in the Routing Table: 2022 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: 4 Number of addresses announced to Internet: 199152640 Equivalent to 11 /8s, 222 /16s and 212 /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: 4870 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 5607 Total APNIC prefixes after maximum aggregation: 2464 APNIC Deaggregation factor: 2.28 Prefixes being announced from the APNIC address blocks: 7925 Unique aggregates announced from the APNIC address blocks: 2886 APNIC Region origin ASes present in the Internet Routing Table: 651 APNIC Prefixes per ASN: 12.17 APNIC Region origin ASes announcing only one prefix: 273 APNIC Region transit ASes present in the Internet Routing Table: 61 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 35 Number of APNIC region 32-bit ASNs visible in the Routing Table: 271 Number of APNIC addresses announced to Internet: 45608704 Equivalent to 2 /8s, 183 /16s and 239 /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: 8690 Total ARIN prefixes after maximum aggregation: 4848 ARIN Deaggregation factor: 1.79 Prefixes being announced from the ARIN address blocks: 8711 Unique aggregates announced from the ARIN address blocks: 5402 ARIN Region origin ASes present in the Internet Routing Table: 1303 ARIN Prefixes per ASN: 6.69 ARIN Region origin ASes announcing only one prefix: 466 ARIN Region transit ASes present in the Internet Routing Table: 166 Average ARIN Region AS path length visible: 6.4 Max ARIN Region AS path length visible: 18 Number of ARIN region 32-bit ASNs visible in the Routing Table: 224 Number of ARIN addresses announced to Internet: 89480960 Equivalent to 5 /8s, 85 /16s and 95 /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: 3417 Total RIPE prefixes after maximum aggregation: 2709 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3404 Unique aggregates announced from the RIPE address blocks: 2765 RIPE Region origin ASes present in the Internet Routing Table: 605 RIPE Prefixes per ASN: 5.63 RIPE Region origin ASes announcing only one prefix: 273 RIPE Region transit ASes present in the Internet Routing Table: 106 Average RIPE Region AS path length visible: 5.8 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 153 Number of RIPE addresses announced to Internet: 57605888 Equivalent to 3 /8s, 110 /16s and 255 /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: 1250 Total LACNIC prefixes after maximum aggregation: 478 LACNIC Deaggregation factor: 2.62 Prefixes being announced from the LACNIC address blocks: 1250 Unique aggregates announced from the LACNIC address blocks: 658 LACNIC Region origin ASes present in the Internet Routing Table: 130 LACNIC Prefixes per ASN: 9.62 LACNIC Region origin ASes announcing only one prefix: 57 LACNIC Region transit ASes present in the Internet Routing Table: 26 Average LACNIC Region AS path length visible: 7.1 Max LACNIC Region AS path length visible: 16 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 59 Number of LACNIC addresses announced to Internet: 3979008 Equivalent to 0 /8s, 60 /16s and 183 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + 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: 1215 Total AfriNIC prefixes after maximum aggregation: 199 AfriNIC Deaggregation factor: 6.11 Prefixes being announced from the AfriNIC address blocks: 1214 Unique aggregates announced from the AfriNIC address blocks: 280 AfriNIC Region origin ASes present in the Internet Routing Table: 44 AfriNIC Prefixes per ASN: 27.59 AfriNIC Region origin ASes announcing only one prefix: 19 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 11 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 23 Number of AfriNIC addresses announced to Internet: 2475264 Equivalent to 0 /8s, 37 /16s and 197 /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 600 2169 462 SINET-AS Research Organization of Informa 7497 454 180 23 CSTNET-AS-AP Computer Network Information 9484 454 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 1237 199 72 153 KREONET-AS-KR KISTI, KR 4538 184 4192 72 ERX-CERNET-BKB China Education and Resear 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 164 281 111 AARNET-AS-AP Australian Academic and Rese 55824 153 19 22 NKN-CORE-NW NKN Core Network, IN 17882 129 8 37 UNIVISION-AS-AP UNIVISION LLC, MN 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 2152 677 492 98 CENIC-2152 - CENIC, US 2920 229 44 49 LACOE - Los Angeles County Office of Educ 376 198 162 152 RISQ-AS - Reseau dInformations Scientifiq 5786 197 16 1 UPRENET - University of Puerto Rico, PR 668 178 581 152 DNIC-AS-00668 - United States Department 18558 141 18 5 NETBLK-RCOEK - Riverside County Office of 81 117 455 35 NCREN - MCNC, US 21976 94 34 16 NJEDGE-NET - NJEDge.Net, Inc., US 237 83 542 49 MERIT-AS-14 - Merit Network Inc., US 1736 79 16 1 MU-AS - Marquette University, US Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 284 1883 251 DFN Verein zur Foerderung eines Deutschen 786 214 1738 187 JANET Jisc Services Limited, GB 559 115 533 105 SWITCH Switch, Swiss Academic and Researc 8895 103 24 5 ISU Internet Services Unit ISU, SA 1103 100 1759 85 SURFNET-NL SURFnet, The Netherlands, NL 2614 88 26 68 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 78 88 73 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/Erdemnet/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 205 177 41 Rede Nacional de Ensino e Pesquisa, BR 28391 161 10 72 Universidad Juarez Autonoma de Tabasco, M 11340 111 25 50 Red Universitaria Nacional, CL 271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 3596 66 8 4 Universidad Autonoma Metropolitana, MX 2715 57 84 39 Fundacao Carlos Chagas Filho de Amparo a 19611 53 17 2 Associacao Antonio Vieira - Unisinos, BR 61468 52 3 21 CEDIA, EC 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/Erdemnet/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 558 82 3 KENET-AS, KE 2018 375 318 69 TENET-1, ZA 2561 68 4 34 EUN, EG 8094 47 48 18 PUKNET, ZA 37215 44 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 327700 14 16 1 MoRENet, MZ 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 37654 7 0 5 RwEdNet-AS, RW Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 65530 2248 2 884 >>UNKNOWN<< 65510 1850 1 720 >>UNKNOWN<< 2152 677 492 98 CENIC-2152 - CENIC, US 2907 600 2169 462 SINET-AS Research Organization of Informa 36914 558 82 3 KENET-AS, KE 7497 454 180 23 CSTNET-AS-AP Computer Network Information 9484 454 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 2018 375 318 69 TENET-1, ZA 680 284 1883 251 DFN Verein zur Foerderung eines Deutschen 2920 229 44 49 LACOE - Los Angeles County Office of Educ Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 65510 1850 1130 -Private Use AS-, ZZ 2152 677 579 CENIC-2152 - CENIC, US 36914 558 555 KENET-AS, KE 9484 454 448 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet 7497 454 431 CSTNET-AS-AP Computer Network Information Cente 2018 375 306 TENET-1, ZA 5786 197 196 UPRENET - University of Puerto Rico, PR 2920 229 180 LACOE - Los Angeles County Office of Education, 58647 182 180 KAGAWAU-AS Kagawa University, JP 1916 205 164 Rede Nacional de Ensino e Pesquisa, BR Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 65510 PRIVATE 45.117.32.24/29 9484 MOBINET-AS-MN Mobinet L 65530 PRIVATE 45.117.32.40/29 65510 -Private Use AS-, ZZ 65001 PRIVATE 45.117.32.48/29 65510 -Private Use AS-, ZZ 65530 PRIVATE 45.117.32.56/29 65510 -Private Use AS-, ZZ 65530 PRIVATE 45.117.32.64/29 65510 -Private Use AS-, ZZ 65530 PRIVATE 45.117.32.72/29 65510 -Private Use AS-, ZZ 65530 PRIVATE 45.117.32.80/29 65510 -Private Use AS-, ZZ 65510 PRIVATE 45.117.32.88/29 9484 MOBINET-AS-MN Mobinet L 65530 PRIVATE 45.117.32.96/29 65510 -Private Use AS-, ZZ 65510 PRIVATE 45.117.32.104/29 9484 MOBINET-AS-MN Mobinet L Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 162.212.34.0/24 Origin: 54048 CVIN - Vast Networks, US 162.212.34.0/24 Transit: 2152 CENIC-2152 - CENIC, US 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 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 Adelaide Unive 203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- !!Default route being announced!! /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 /14:33 /15:115 /16:1965 /17:417 /18:457 /19:603 /20:831 /21:894 /22:1455 /23:1617 /24:11326 /25:8 /26:4 /27:27 /28:89 /29:960 /30:1497 /31:3 /32:175 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 65530 1065 2248 -Private Use AS-, ZZ 65510 898 1850 -Private Use AS-, ZZ 36914 535 558 KENET-AS, KE 9484 354 454 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet Service Provider, MN 65516 107 214 -Private Use AS-, ZZ 8895 100 103 ISU Internet Services Unit ISU, SA 65001 95 200 -Private Use AS-, ZZ 2152 77 677 CENIC-2152 - CENIC, US 4850 72 73 DIGICOM-AS-AP Digicom LLC, MN 31638 48 48 ASN-LEPIDA, IT Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:18 6:1 8:13 12:2 14:95 23:11 24:2 27:4 31:1 35:3 36:2 37:26 38:12 40:1 41:233 42:17 43:8 44:6 45:42 46:4 47:1 49:13 50:4 58:14 59:24 60:6 61:3 62:6 63:32 64:48 65:6 66:93 67:41 68:13 69:17 70:3 72:6 74:56 76:27 77:7 78:3 79:9 80:7 81:27 82:3 83:6 84:8 85:26 86:4 87:1 89:16 91:37 93:14 94:2 95:2 96:5 97:1 98:2 101:4 102:8 103:436 104:77 108:8 109:10 111:3 112:16 113:2 114:24 116:9 117:5 118:33 119:38 121:17 122:24 123:8 124:43 125:5 128:55 129:43 130:103 131:59 132:64 133:157 134:120 136:198 137:115 138:11 139:5 140:33 141:3 142:31 143:26 144:8 145:13 146:137 147:42 148:234 149:11 150:34 151:8 152:128 153:15 154:37 155:87 156:126 157:28 158:28 159:117 160:35 161:33 162:25 163:77 164:10 165:45 166:1 167:29 168:103 169:7 170:19 171:1 172:1 173:5 175:15 177:7 179:12 180:16 181:1 182:3 183:2 184:2 185:43 186:4 187:24 188:20 190:17 191:13 192:1468 193:310 194:120 195:98 196:149 197:343 198:586 199:281 200:297 201:22 202:766 203:458 204:419 205:186 206:204 207:348 208:40 209:159 210:226 211:5 212:139 213:4 214:9 216:90 217:22 218:21 219:7 220:16 222:4 223:17 End of report