IPv4 R&E Routing Table Report 20:20 GMT Sun 17 Aug, 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: 21597 Prefixes after maximum aggregation (per Origin AS): 11997 Deaggregation factor: 1.80 Unique aggregates announced (without unneeded subnets): 11732 Number of IPv4 prefixes with a valid ROA: 8377 Number of IPv4 prefixes with an invalid ROA: 2755 Number of IPv4 prefixes with no ROA: 10465 Total ASes present in the Internet Routing Table: 2815 Prefixes per ASN: 7.67 Origin-only ASes present in the Internet Routing Table: 2442 Origin ASes announcing only one prefix: 1090 Transit ASes present in the Internet Routing Table: 373 Transit-only ASes present in the Internet Routing Table: 64 Paths with bogon ASNs present in the IPv4 Routing Table: 2277 Average AS path length visible in the Internet Routing Table: 6.2 Max AS path length visible: 21 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 2310 Number of instances of unregistered ASNs: 2310 Number of 32-bit ASNs allocated by the RIRs: 47200 Number of 32-bit ASNs visible in the Routing Table: 730 Prefixes from 32-bit ASNs in the Routing Table: 1947 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: 189110016 Equivalent to 11 /8s, 69 /16s and 151 /24s Percentage of available address space announced: 5.1 Percentage of allocated address space announced: 5.1 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: 4882 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 5213 Total APNIC prefixes after maximum aggregation: 2445 APNIC Deaggregation factor: 2.13 Prefixes being announced from the APNIC address blocks: 7487 Unique aggregates announced from the APNIC address blocks: 2971 APNIC Region origin ASes present in the Internet Routing Table: 641 APNIC Prefixes per ASN: 11.68 APNIC Region origin ASes announcing only one prefix: 263 APNIC Region transit ASes present in the Internet Routing Table: 56 Average APNIC Region AS path length visible: 4.9 Max APNIC Region AS path length visible: 15 Number of APNIC region 32-bit ASNs visible in the Routing Table: 264 Number of APNIC addresses announced to Internet: 39022848 Equivalent to 2 /8s, 83 /16s and 113 /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: 8001 Total ARIN prefixes after maximum aggregation: 4469 ARIN Deaggregation factor: 1.79 Prefixes being announced from the ARIN address blocks: 8049 Unique aggregates announced from the ARIN address blocks: 4931 ARIN Region origin ASes present in the Internet Routing Table: 1249 ARIN Prefixes per ASN: 6.44 ARIN Region origin ASes announcing only one prefix: 444 ARIN Region transit ASes present in the Internet Routing Table: 157 Average ARIN Region AS path length visible: 7.4 Max ARIN Region AS path length visible: 19 Number of ARIN region 32-bit ASNs visible in the Routing Table: 214 Number of ARIN addresses announced to Internet: 85557760 Equivalent to 5 /8s, 25 /16s and 130 /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: 3637 Total RIPE prefixes after maximum aggregation: 2903 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3622 Unique aggregates announced from the RIPE address blocks: 2946 RIPE Region origin ASes present in the Internet Routing Table: 666 RIPE Prefixes per ASN: 5.44 RIPE Region origin ASes announcing only one prefix: 296 RIPE Region transit ASes present in the Internet Routing Table: 107 Average RIPE Region AS path length visible: 6.1 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 158 Number of RIPE addresses announced to Internet: 58046976 Equivalent to 3 /8s, 117 /16s and 186 /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: 1271 Total LACNIC prefixes after maximum aggregation: 487 LACNIC Deaggregation factor: 2.61 Prefixes being announced from the LACNIC address blocks: 1271 Unique aggregates announced from the LACNIC address blocks: 659 LACNIC Region origin ASes present in the Internet Routing Table: 133 LACNIC Prefixes per ASN: 9.56 LACNIC Region origin ASes announcing only one prefix: 56 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: 61 Number of LACNIC addresses announced to Internet: 4069376 Equivalent to 0 /8s, 62 /16s and 24 /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: 1165 Total AfriNIC prefixes after maximum aggregation: 171 AfriNIC Deaggregation factor: 6.81 Prefixes being announced from the AfriNIC address blocks: 1164 Unique aggregates announced from the AfriNIC address blocks: 222 AfriNIC Region origin ASes present in the Internet Routing Table: 52 AfriNIC Prefixes per ASN: 22.38 AfriNIC Region origin ASes announcing only one prefix: 31 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 7.3 Max AfriNIC Region AS path length visible: 21 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 33 Number of AfriNIC addresses announced to Internet: 2410496 Equivalent to 0 /8s, 36 /16s and 200 /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 1237 194 74 146 KREONET-AS-KR KISTI, KR 4538 186 4192 72 ERX-CERNET-BKB China Education and Resear 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 169 281 114 AARNET-AS-AP Australian Academic and Rese 55824 150 19 21 NKN-CORE-NW NKN Core Network, IN 17882 128 8 38 UNIVISION-AS-AP UNIVISION LLC, MN 4850 76 0 1 DIGICOM-AS-AP Digicom 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 584 492 99 CENIC-2152, US 2920 231 44 49 LACOE, US 376 200 162 150 RISQ-AS, CA 5786 171 16 1 UPRENET, PR 18558 140 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 3477 77 63 39 NOAA-NWAVE, 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 680 286 1883 252 DFN Verein zur Foerderung eines Deutschen 786 190 1742 185 JANET Jisc Services Limited, GB 559 114 533 104 SWITCH Switch, Swiss Academic and Researc 8895 109 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 78 88 73 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 240 177 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 570 82 3 KENET-AS, KE 2018 375 318 69 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37215 38 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 7 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 3420 2 1029 >>UNKNOWN<< 65530 610 0 275 >>UNKNOWN<< 2907 600 2169 462 SINET-AS Research Organization of Informa 2152 584 492 99 CENIC-2152, US 36914 570 82 3 KENET-AS, KE 9484 456 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 2018 375 318 69 TENET-1, ZA 680 286 1883 252 DFN Verein zur Foerderung eines Deutschen 1916 240 177 41 Rede Nacional de Ensino e Pesquisa, BR 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 570 567 KENET-AS, KE 2152 584 485 CENIC-2152, US 9484 456 450 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet 65530 610 335 -Private Use AS-, ZZ 2018 375 306 TENET-1, ZA 1916 240 199 Rede Nacional de Ensino e Pesquisa, BR 2920 231 182 LACOE, US 58647 182 180 KAGAWAU-AS Kagawa University, JP 5786 171 170 UPRENET, PR 2907 600 138 SINET-AS Research Organization of Information a 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 /11:0 /12:10 /13:16 /14:32 /15:106 /16:1905 /17:404 /18:452 /19:578 /20:819 /21:810 /22:1402 /23:1494 /24:10840 /25:9 /26:4 /27:27 /28:91 /29:936 /30:1483 /31:5 /32:171 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 65510 1638 3420 -Private Use AS-, ZZ 36914 546 570 KENET-AS, KE 9484 357 456 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet Service Provider, MN 65530 290 610 -Private Use AS-, ZZ 8895 106 109 ISU Internet Services Unit ISU, SA 65516 100 200 -Private Use AS-, ZZ 65001 95 200 -Private Use AS-, ZZ 4850 75 76 DIGICOM-AS-AP Digicom LLC, MN 2152 67 584 CENIC-2152, US 3267 35 80 NIKS, RU Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:16 8:2 12:2 14:94 23:9 24:3 27:4 31:1 35:4 36:2 37:14 38:11 40:1 41:227 42:18 43:8 44:6 45:47 46:5 47:1 49:10 50:2 52:1 58:14 59:24 61:3 62:8 63:32 64:47 65:5 66:74 67:40 68:13 69:17 70:2 71:1 72:8 74:52 76:25 77:9 78:3 79:9 80:13 81:27 82:6 83:8 84:8 85:48 86:6 87:1 89:9 91:41 92:2 93:15 94:2 95:2 96:5 97:1 98:2 101:3 102:13 103:435 104:76 108:8 109:7 111:21 112:16 113:1 114:21 116:8 117:61 118:34 119:15 121:28 122:24 123:8 124:1 125:5 128:59 129:47 130:97 131:65 132:68 133:156 134:111 136:172 137:106 138:11 139:5 140:32 141:3 142:26 143:26 144:32 145:4 146:137 147:27 148:200 149:10 150:36 151:10 152:136 153:15 154:40 155:85 156:128 157:25 158:26 159:19 160:35 161:15 162:22 163:74 164:10 165:44 167:28 168:96 169:6 170:19 171:1 172:1 173:5 175:16 177:5 179:13 180:16 181:1 182:12 183:1 184:2 185:52 186:4 187:24 188:16 190:17 191:13 192:1409 193:294 194:145 195:83 196:148 197:352 198:523 199:244 200:303 201:22 202:782 203:463 204:392 205:179 206:200 207:316 208:64 209:135 210:147 211:4 212:147 213:4 216:92 217:22 218:24 219:7 220:16 222:4 End of report