IPv4 R&E Routing Table Report 20:20 GMT Tue 11 Nov, 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: 22758 Prefixes after maximum aggregation (per Origin AS): 12565 Deaggregation factor: 1.81 Unique aggregates announced (without unneeded subnets): 12281 Number of IPv4 prefixes with a valid ROA: 8619 Number of IPv4 prefixes with an invalid ROA: 2802 Number of IPv4 prefixes with no ROA: 11337 Total ASes present in the Internet Routing Table: 2852 Prefixes per ASN: 7.98 Origin-only ASes present in the Internet Routing Table: 2466 Origin ASes announcing only one prefix: 1096 Transit ASes present in the Internet Routing Table: 386 Transit-only ASes present in the Internet Routing Table: 64 Paths with bogon ASNs present in the IPv4 Routing Table: 2334 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: 2345 Number of instances of unregistered ASNs: 2345 Number of 32-bit ASNs allocated by the RIRs: 47952 Number of 32-bit ASNs visible in the Routing Table: 731 Prefixes from 32-bit ASNs in the Routing Table: 1944 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: 7 Number of addresses announced to Internet: 200089856 Equivalent to 11 /8s, 237 /16s and 33 /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: 4985 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 5605 Total APNIC prefixes after maximum aggregation: 2477 APNIC Deaggregation factor: 2.26 Prefixes being announced from the APNIC address blocks: 7933 Unique aggregates announced from the APNIC address blocks: 2920 APNIC Region origin ASes present in the Internet Routing Table: 637 APNIC Prefixes per ASN: 12.45 APNIC Region origin ASes announcing only one prefix: 257 APNIC Region transit ASes present in the Internet Routing Table: 58 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: 257 Number of APNIC addresses announced to Internet: 45534720 Equivalent to 2 /8s, 182 /16s and 206 /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: 8697 Total ARIN prefixes after maximum aggregation: 4873 ARIN Deaggregation factor: 1.78 Prefixes being announced from the ARIN address blocks: 8721 Unique aggregates announced from the ARIN address blocks: 5422 ARIN Region origin ASes present in the Internet Routing Table: 1288 ARIN Prefixes per ASN: 6.77 ARIN Region origin ASes announcing only one prefix: 454 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: 89994752 Equivalent to 5 /8s, 93 /16s and 54 /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: 3642 Total RIPE prefixes after maximum aggregation: 2896 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3628 Unique aggregates announced from the RIPE address blocks: 2974 RIPE Region origin ASes present in the Internet Routing Table: 664 RIPE Prefixes per ASN: 5.46 RIPE Region origin ASes announcing only one prefix: 300 RIPE Region transit ASes present in the Internet Routing Table: 111 Average RIPE Region AS path length visible: 6.0 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 162 Number of RIPE addresses announced to Internet: 58043904 Equivalent to 3 /8s, 117 /16s and 174 /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: 1227 Total LACNIC prefixes after maximum aggregation: 486 LACNIC Deaggregation factor: 2.52 Prefixes being announced from the LACNIC address blocks: 1227 Unique aggregates announced from the LACNIC address blocks: 659 LACNIC Region origin ASes present in the Internet Routing Table: 132 LACNIC Prefixes per ASN: 9.30 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: 17 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 59 Number of LACNIC addresses announced to Internet: 3997696 Equivalent to 0 /8s, 61 /16s and 0 /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: 1242 Total AfriNIC prefixes after maximum aggregation: 213 AfriNIC Deaggregation factor: 5.83 Prefixes being announced from the AfriNIC address blocks: 1241 Unique aggregates announced from the AfriNIC address blocks: 299 AfriNIC Region origin ASes present in the Internet Routing Table: 56 AfriNIC Prefixes per ASN: 22.16 AfriNIC Region origin ASes announcing only one prefix: 28 AfriNIC Region transit ASes present in the Internet Routing Table: 10 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: 34 Number of AfriNIC addresses announced to Internet: 2515200 Equivalent to 0 /8s, 38 /16s and 97 /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 9484 456 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 7497 452 180 23 CSTNET-AS-AP Computer Network Information 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 167 281 113 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 653 492 100 CENIC-2152, US 2920 228 44 49 LACOE, US 668 202 651 170 DNIC-AS-00668, US 376 200 162 150 RISQ-AS, CA 5786 177 16 1 UPRENET, PR 18558 138 18 5 NETBLK-RCOEK, US 81 118 471 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 680 283 1883 250 DFN Verein zur Foerderung eines Deutschen 786 213 1739 190 JANET Jisc Services Limited, GB 559 114 533 104 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 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 205 177 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 56 84 39 Fundacao Carlos Chagas Filho de Amparo a 61468 52 3 21 CEDIA, EC 19611 50 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 565 82 3 KENET-AS, KE 2018 374 318 69 TENET-1, ZA 2561 68 4 34 EUN, EG 8094 47 48 18 PUKNET, ZA 37215 43 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 327700 12 16 1 MoRENet, MZ 37501 11 49 6 UOFS, ZA 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 3252 2 1009 >>UNKNOWN<< 65530 870 1 386 >>UNKNOWN<< 2152 653 492 100 CENIC-2152, US 2907 600 2169 462 SINET-AS Research Organization of Informa 36914 565 82 3 KENET-AS, KE 9484 456 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 7497 452 180 23 CSTNET-AS-AP Computer Network Information 2018 374 318 69 TENET-1, ZA 680 283 1883 250 DFN Verein zur Foerderung eines Deutschen 2920 228 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 565 562 KENET-AS, KE 2152 653 553 CENIC-2152, US 65530 870 484 -Private Use AS-, ZZ 9484 456 450 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet 7497 452 429 CSTNET-AS-AP Computer Network Information Cente 2018 374 305 TENET-1, ZA 58647 182 180 KAGAWAU-AS Kagawa University, JP 2920 228 179 LACOE, US 5786 177 176 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 165.101.120.0/24 Origin: 150725 NUS-AS-AP National University of Singapo 165.101.120.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re 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 202.46.245.0/24 Origin: 147171 IDNIC-BRIN-AS-ID Badan Riset dan Inovasi 202.46.245.0/24 Transit: 64302 IDNIC-IDREN-AS-ID IDREN - Indonesia Rese 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 /16:1973 /17:414 /18:464 /19:600 /20:859 /21:909 /22:1513 /23:1664 /24:11400 /25:9 /26:4 /27:27 /28:90 /29:952 /30:1515 /31:5 /32:179 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 65510 1564 3252 -Private Use AS-, ZZ 36914 541 565 KENET-AS, KE 65530 411 870 -Private Use AS-, ZZ 9484 356 456 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet Service Provider, MN 65516 110 220 -Private Use AS-, ZZ 8895 100 103 ISU Internet Services Unit ISU, SA 65001 95 200 -Private Use AS-, ZZ 2152 73 653 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 23:9 24:3 27:4 31:1 35:3 36:2 37:26 38:12 40:1 41:229 42:18 43:8 44:6 45:48 46:4 47:1 49:12 50:4 52:1 58:14 59:24 60:6 61:3 62:8 63:32 64:48 65:7 66:89 67:42 68:13 69:17 70:3 71:1 72:6 74:56 76:27 77:10 78:3 79:9 80:11 81:27 82:6 83:6 84:8 85:48 86:7 87:1 89:16 91:38 92:2 93:14 94:1 95:2 96:5 97:1 98:2 101:3 102:14 103:407 104:77 108:8 109:8 111:7 112:16 113:1 114:22 116:9 117:5 118:34 119:37 121:12 122:24 123:8 124:43 125:5 128:57 129:43 130:98 131:58 132:64 133:158 134:120 136:179 137:116 138:11 139:4 140:33 141:3 142:30 143:25 144:62 145:13 146:137 147:54 148:201 149:11 150:36 151:8 152:123 153:14 154:40 155:86 156:125 157:27 158:29 159:117 160:35 161:33 162:23 163:77 164:10 165:45 167:28 168:103 169:6 170:22 171:1 172:1 173:5 175:8 177:5 179:12 180:16 181:1 182:11 183:2 184:16 185:49 186:4 187:24 188:23 190:17 191:13 192:1455 193:337 194:141 195:101 196:149 197:350 198:579 199:279 200:301 201:22 202:791 203:459 204:411 205:186 206:208 207:343 208:41 209:147 210:224 211:4 212:141 213:4 214:8 216:91 217:23 218:21 219:7 220:16 222:4 223:17 End of report