IPv4 R&E Routing Table Report 20:20 GMT Sun 28 Dec, 2025 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: 22545 Prefixes after maximum aggregation (per Origin AS): 12496 Deaggregation factor: 1.80 Unique aggregates announced (without unneeded subnets): 12121 Number of IPv4 prefixes with a valid ROA: 8488 Number of IPv4 prefixes with an invalid ROA: 2793 Number of IPv4 prefixes with no ROA: 11264 Total ASes present in the Internet Routing Table: 2825 Prefixes per ASN: 7.98 Origin-only ASes present in the Internet Routing Table: 2438 Origin ASes announcing only one prefix: 1094 Transit ASes present in the Internet Routing Table: 387 Transit-only ASes present in the Internet Routing Table: 67 Paths with bogon ASNs present in the IPv4 Routing Table: 2326 Average AS path length visible in the Internet Routing Table: 5.9 Max AS path length visible: 35 Max AS path prepend of ASN (152692) 32 Prefixes from unregistered ASNs in the Routing Table: 2337 Number of instances of unregistered ASNs: 2337 Number of 32-bit ASNs allocated by the RIRs: 48318 Number of 32-bit ASNs visible in the Routing Table: 738 Prefixes from 32-bit ASNs in the Routing Table: 2024 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: 199455744 Equivalent to 11 /8s, 227 /16s and 116 /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: 4868 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 5654 Total APNIC prefixes after maximum aggregation: 2476 APNIC Deaggregation factor: 2.28 Prefixes being announced from the APNIC address blocks: 7977 Unique aggregates announced from the APNIC address blocks: 2956 APNIC Region origin ASes present in the Internet Routing Table: 653 APNIC Prefixes per ASN: 12.22 APNIC Region origin ASes announcing only one prefix: 270 APNIC Region transit ASes present in the Internet Routing Table: 59 Average APNIC Region AS path length visible: 4.7 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: 45456640 Equivalent to 2 /8s, 181 /16s and 157 /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: 8682 Total ARIN prefixes after maximum aggregation: 4877 ARIN Deaggregation factor: 1.78 Prefixes being announced from the ARIN address blocks: 8706 Unique aggregates announced from the ARIN address blocks: 5448 ARIN Region origin ASes present in the Internet Routing Table: 1300 ARIN Prefixes per ASN: 6.70 ARIN Region origin ASes announcing only one prefix: 462 ARIN Region transit ASes present in the Internet Routing Table: 162 Average ARIN Region AS path length visible: 6.9 Max ARIN Region AS path length visible: 18 Number of ARIN region 32-bit ASNs visible in the Routing Table: 223 Number of ARIN addresses announced to Internet: 89765632 Equivalent to 5 /8s, 89 /16s and 183 /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: 3409 Total RIPE prefixes after maximum aggregation: 2709 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3395 Unique aggregates announced from the RIPE address blocks: 2762 RIPE Region origin ASes present in the Internet Routing Table: 608 RIPE Prefixes per ASN: 5.58 RIPE Region origin ASes announcing only one prefix: 277 RIPE Region transit ASes present in the Internet Routing Table: 106 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 152 Number of RIPE addresses announced to Internet: 57737728 Equivalent to 3 /8s, 113 /16s and 2 /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: 1257 Total LACNIC prefixes after maximum aggregation: 483 LACNIC Deaggregation factor: 2.60 Prefixes being announced from the LACNIC address blocks: 1257 Unique aggregates announced from the LACNIC address blocks: 658 LACNIC Region origin ASes present in the Internet Routing Table: 132 LACNIC Prefixes per ASN: 9.52 LACNIC Region origin ASes announcing only one prefix: 58 LACNIC Region transit ASes present in the Internet Routing Table: 25 Average LACNIC Region AS path length visible: 8.1 Max LACNIC Region AS path length visible: 17 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 60 Number of LACNIC addresses announced to Internet: 3983872 Equivalent to 0 /8s, 60 /16s and 202 /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: 1206 Total AfriNIC prefixes after maximum aggregation: 210 AfriNIC Deaggregation factor: 5.74 Prefixes being announced from the AfriNIC address blocks: 1205 Unique aggregates announced from the AfriNIC address blocks: 293 AfriNIC Region origin ASes present in the Internet Routing Table: 54 AfriNIC Prefixes per ASN: 22.31 AfriNIC Region origin ASes announcing only one prefix: 27 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 6.3 Max AfriNIC Region AS path length visible: 15 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 32 Number of AfriNIC addresses announced to Internet: 2509056 Equivalent to 0 /8s, 38 /16s and 73 /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 592 2168 458 SINET-AS Research Organization of Informa 9484 457 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 7497 453 180 23 CSTNET-AS-AP Computer Network Information 1237 199 72 153 KREONET-AS-KR KISTI, KR 4538 185 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 665 492 98 CENIC-2152, US 2920 229 44 49 LACOE, US 668 201 649 169 DNIC-AS-00668, US 376 200 162 150 RISQ-AS, CA 5786 178 16 1 UPRENET, PR 18558 141 18 5 NETBLK-RCOEK, US 81 117 455 35 NCREN, US 21976 90 34 16 NJEDGE-NET, US 237 83 542 49 MERIT-AS-14, US 1736 79 16 1 MU-AS, 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 680 285 1883 251 DFN Verein zur Foerderung eines Deutschen 786 209 1738 187 JANET Jisc Services Limited, GB 559 115 533 105 SWITCH Switch, Swiss Academic and Researc 8895 102 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 77 88 72 RCCN Fundacao para a Ciencia e a Tecnolog 553 75 366 75 BELWUE BelWue-Koordination, DE 2200 65 630 60 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 160 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 551 82 3 KENET-AS, KE 2018 357 318 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 37501 11 49 6 UOFS, ZA 327700 11 16 1 MoRENet, MZ 37654 10 1 6 RwEdNet-AS, RW 36982 8 33 8 UCT, ZA 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 65510 2654 2 905 >>UNKNOWN<< 65530 1450 1 612 >>UNKNOWN<< 2152 665 492 98 CENIC-2152, US 2907 592 2168 458 SINET-AS Research Organization of Informa 36914 551 82 3 KENET-AS, KE 9484 457 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 7497 453 180 23 CSTNET-AS-AP Computer Network Information 2018 357 318 69 TENET-1, ZA 680 285 1883 251 DFN Verein zur Foerderung eines Deutschen 2920 229 44 49 LACOE, US Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 65530 1450 838 -Private Use AS-, ZZ 2152 665 567 CENIC-2152, US 36914 551 548 KENET-AS, KE 9484 457 451 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet 7497 453 430 CSTNET-AS-AP Computer Network Information Cente 2018 357 288 TENET-1, ZA 2920 229 180 LACOE, US 58647 182 180 KAGAWAU-AS Kagawa University, JP 5786 178 177 UPRENET, PR 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 65510 PRIVATE 45.117.32.40/29 9484 MOBINET-AS-MN Mobinet L 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 65510 PRIVATE 45.117.32.80/29 9484 MOBINET-AS-MN Mobinet L 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, US 162.212.34.0/24 Transit: 2152 CENIC-2152, 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 /16:1970 /17:414 /18:453 /19:595 /20:844 /21:897 /22:1457 /23:1634 /24:11326 /25:8 /26:4 /27:27 /28:90 /29:955 /30:1504 /31:5 /32:181 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 65510 1277 2654 -Private Use AS-, ZZ 65530 689 1450 -Private Use AS-, ZZ 36914 527 551 KENET-AS, KE 9484 357 457 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet Service Provider, MN 65516 112 224 -Private Use AS-, ZZ 8895 99 102 ISU Internet Services Unit ISU, SA 65001 95 200 -Private Use AS-, ZZ 2152 73 665 CENIC-2152, US 4850 73 74 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 6:4 8:2 12:2 14:95 23:11 24:2 27:4 31:1 35:3 36:2 37:26 38:12 40:1 41:225 42:17 43:8 44:6 45:44 46:4 47:1 49:13 50:5 52:1 58:14 59:24 60:6 61:3 62:6 63:32 64:48 65:6 66:93 67:42 68:13 69:17 70:3 71:1 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 91:38 93:14 94:2 95:2 96:5 97:1 98:2 101:3 102:10 103:438 104:77 108:8 109:9 111:3 112:16 113:2 114:21 116:9 117:61 118:33 119:37 121:17 122:24 123:8 124:43 125:5 128:57 129:45 130:99 131:63 132:64 133:158 134:120 136:180 137:115 138:11 139:5 140:33 141:3 142:30 143:26 144:7 145:13 146:137 147:67 148:233 149:11 150:36 151:8 152:128 153:15 154:40 155:87 156:126 157:27 158:28 159:117 160:35 161:33 162:24 163:77 164:10 165:45 166:1 167:27 168:85 169:6 170:19 171:1 172:1 173:5 175:15 177:5 179:12 180:16 181:1 182:11 183:2 184:2 185:43 186:4 187:24 188:20 190:17 191:13 192:1466 193:307 194:118 195:98 196:150 197:340 198:586 199:275 200:301 201:22 202:760 203:450 204:408 205:184 206:204 207:351 208:40 209:155 210:224 211:4 212:138 213:4 214:9 216:91 217:22 218:21 219:7 220:16 222:4 223:17 End of report