IPv4 R&E Routing Table Report 20:20 GMT Wed 10 Sep, 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: 22688 Prefixes after maximum aggregation (per Origin AS): 12477 Deaggregation factor: 1.82 Unique aggregates announced (without unneeded subnets): 12263 Number of IPv4 prefixes with a valid ROA: 8526 Number of IPv4 prefixes with an invalid ROA: 2782 Number of IPv4 prefixes with no ROA: 11380 Total ASes present in the Internet Routing Table: 2864 Prefixes per ASN: 7.92 Origin-only ASes present in the Internet Routing Table: 2488 Origin ASes announcing only one prefix: 1106 Transit ASes present in the Internet Routing Table: 376 Transit-only ASes present in the Internet Routing Table: 59 Paths with bogon ASNs present in the IPv4 Routing Table: 2300 Average AS path length visible in the Internet Routing Table: 5.9 Max AS path length visible: 21 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 2333 Number of instances of unregistered ASNs: 2333 Number of 32-bit ASNs allocated by the RIRs: 47345 Number of 32-bit ASNs visible in the Routing Table: 738 Prefixes from 32-bit ASNs in the Routing Table: 1952 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: 3 Number of addresses announced to Internet: 200383744 Equivalent to 11 /8s, 241 /16s and 157 /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: 4993 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 5709 Total APNIC prefixes after maximum aggregation: 2509 APNIC Deaggregation factor: 2.28 Prefixes being announced from the APNIC address blocks: 8006 Unique aggregates announced from the APNIC address blocks: 3005 APNIC Region origin ASes present in the Internet Routing Table: 652 APNIC Prefixes per ASN: 12.28 APNIC Region origin ASes announcing only one prefix: 264 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: 15 Number of APNIC region 32-bit ASNs visible in the Routing Table: 266 Number of APNIC addresses announced to Internet: 45640192 Equivalent to 2 /8s, 184 /16s and 106 /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: 8573 Total ARIN prefixes after maximum aggregation: 4873 ARIN Deaggregation factor: 1.76 Prefixes being announced from the ARIN address blocks: 8621 Unique aggregates announced from the ARIN address blocks: 5403 ARIN Region origin ASes present in the Internet Routing Table: 1291 ARIN Prefixes per ASN: 6.68 ARIN Region origin ASes announcing only one prefix: 460 ARIN Region transit ASes present in the Internet Routing Table: 160 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: 219 Number of ARIN addresses announced to Internet: 90084864 Equivalent to 5 /8s, 94 /16s and 150 /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: 3665 Total RIPE prefixes after maximum aggregation: 2907 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3650 Unique aggregates announced from the RIPE address blocks: 2966 RIPE Region origin ASes present in the Internet Routing Table: 665 RIPE Prefixes per ASN: 5.49 RIPE Region origin ASes announcing only one prefix: 296 RIPE Region transit ASes present in the Internet Routing Table: 106 Average RIPE Region AS path length visible: 6.0 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 159 Number of RIPE addresses announced to Internet: 58092032 Equivalent to 3 /8s, 118 /16s and 106 /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: 1226 Total LACNIC prefixes after maximum aggregation: 484 LACNIC Deaggregation factor: 2.53 Prefixes being announced from the LACNIC address blocks: 1226 Unique aggregates announced from the LACNIC address blocks: 658 LACNIC Region origin ASes present in the Internet Routing Table: 132 LACNIC Prefixes per ASN: 9.29 LACNIC Region origin ASes announcing only one prefix: 57 LACNIC Region transit ASes present in the Internet Routing Table: 24 Average LACNIC Region AS path length visible: 8.0 Max LACNIC Region AS path length visible: 21 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 60 Number of LACNIC addresses announced to Internet: 4069120 Equivalent to 0 /8s, 62 /16s and 23 /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: 1182 Total AfriNIC prefixes after maximum aggregation: 177 AfriNIC Deaggregation factor: 6.68 Prefixes being announced from the AfriNIC address blocks: 1181 Unique aggregates announced from the AfriNIC address blocks: 228 AfriNIC Region origin ASes present in the Internet Routing Table: 55 AfriNIC Prefixes per ASN: 21.47 AfriNIC Region origin ASes announcing only one prefix: 29 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 7.6 Max AfriNIC Region AS path length visible: 13 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 34 Number of AfriNIC addresses announced to Internet: 2494976 Equivalent to 0 /8s, 38 /16s and 18 /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 599 2169 461 SINET-AS Research Organization of Informa 9484 457 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 7497 452 180 23 CSTNET-AS-AP Computer Network Information 1237 196 74 148 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 171 281 114 AARNET-AS-AP Australian Academic and Rese 55824 151 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 598 492 99 CENIC-2152, US 2920 231 44 49 LACOE, US 668 203 651 171 DNIC-AS-00668, US 376 200 162 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 18558 139 18 5 NETBLK-RCOEK, US 81 127 471 35 NCREN, US 21976 90 34 16 NJEDGE-NET, US 237 84 542 50 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 680 283 1883 250 DFN Verein zur Foerderung eines Deutschen 786 190 1742 185 JANET Jisc Services Limited, GB 559 113 533 108 SWITCH Switch, Swiss Academic and Researc 8895 108 24 5 ISU Internet Services Unit ISU, SA 1103 99 1759 85 SURFNET-NL SURFnet, The Netherlands, NL 2614 92 26 69 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 3267 80 29 69 NIKS, RU 1930 77 88 72 RCCN Fundacao para a Ciencia e a Tecnolog 553 75 366 75 BELWUE BelWue-Koordination, DE 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 204 177 41 Rede Nacional de Ensino e Pesquisa, BR 28391 159 10 71 Universidad Juarez Autonoma de Tabasco, M 11340 111 25 50 Red Universitaria Nacional, CL 271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 53 100 36 Fundacao Carlos Chagas Filho de Amparo a 61468 52 3 21 CEDIA, EC 19611 49 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 3596 37 8 4 Universidad Autonoma Metropolitana, MX 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 575 82 3 KENET-AS, KE 2018 375 318 69 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37215 39 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 327947 6 4 1 KNUST-, GH 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 3452 2 1028 >>UNKNOWN<< 65530 618 0 279 >>UNKNOWN<< 2907 599 2169 461 SINET-AS Research Organization of Informa 2152 598 492 99 CENIC-2152, US 36914 575 82 3 KENET-AS, KE 9484 457 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 7497 452 180 23 CSTNET-AS-AP Computer Network Information 2018 375 318 69 TENET-1, ZA 680 283 1883 250 DFN Verein zur Foerderung eines Deutschen 2920 231 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 36914 575 572 KENET-AS, KE 2152 598 499 CENIC-2152, US 9484 457 451 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet 7497 452 429 CSTNET-AS-AP Computer Network Information Cente 65530 618 339 -Private Use AS-, ZZ 2018 375 306 TENET-1, ZA 5786 198 197 UPRENET, PR 2920 231 182 LACOE, US 58647 182 180 KAGAWAU-AS Kagawa University, JP 1916 204 163 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 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 The University 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 /16:1978 /17:418 /18:456 /19:599 /20:858 /21:873 /22:1510 /23:1648 /24:11419 /25:9 /26:4 /27:27 /28:90 /29:948 /30:1492 /31:5 /32:173 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 65510 1654 3452 -Private Use AS-, ZZ 36914 551 575 KENET-AS, KE 9484 358 457 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet Service Provider, MN 65530 294 618 -Private Use AS-, ZZ 8895 105 108 ISU Internet Services Unit ISU, SA 65516 104 208 -Private Use AS-, ZZ 65001 94 198 -Private Use AS-, ZZ 2152 73 598 CENIC-2152, US 4850 73 74 DIGICOM-AS-AP Digicom LLC, MN 31638 44 44 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 14:94 23:10 24:3 27:4 31:1 35:4 36:2 37:26 38:11 40:1 41:230 42:18 43:8 44:6 45:48 46:5 47:1 49:12 50:4 52:1 58:14 59:24 60:6 61:3 62:8 63:36 64:48 65:6 66:89 67:42 68:10 69:14 70:2 71:1 72:8 74:56 76:26 77:9 78:3 79:9 80:13 81:27 82:6 83:8 84:8 85:48 86:6 87:1 89:15 91:41 92:2 93:15 94:2 95:2 96:5 97:1 98:2 101:3 102:13 103:436 104:76 107:2 108:8 109:7 111:5 112:16 113:1 114:21 116:8 117:61 118:34 119:38 121:12 122:24 123:8 124:43 125:5 128:59 129:47 130:98 131:66 132:65 133:156 134:117 136:199 137:106 138:11 139:5 140:33 141:3 142:27 143:25 144:43 145:12 146:137 147:53 148:201 149:11 150:36 151:10 152:136 153:14 154:41 155:88 156:128 157:26 158:26 159:117 160:35 161:31 162:24 163:74 164:10 165:44 167:28 168:102 169:6 170:26 171:1 172:1 173:5 175:16 177:4 179:13 180:16 181:1 182:12 183:1 184:2 185:52 186:4 187:24 188:21 190:17 191:13 192:1449 193:294 194:144 195:83 196:149 197:359 198:549 199:272 200:298 201:22 202:805 203:467 204:402 205:186 206:204 207:322 208:66 209:147 210:221 211:4 212:147 213:4 214:10 216:92 217:23 218:24 219:7 220:16 222:4 223:16 End of report