IPv4 R&E Routing Table Report 20:20 GMT Mon 18 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: 21652 Prefixes after maximum aggregation (per Origin AS): 12027 Deaggregation factor: 1.80 Unique aggregates announced (without unneeded subnets): 11757 Number of IPv4 prefixes with a valid ROA: 8425 Number of IPv4 prefixes with an invalid ROA: 2756 Number of IPv4 prefixes with no ROA: 10471 Total ASes present in the Internet Routing Table: 2822 Prefixes per ASN: 7.67 Origin-only ASes present in the Internet Routing Table: 2448 Origin ASes announcing only one prefix: 1092 Transit ASes present in the Internet Routing Table: 374 Transit-only ASes present in the Internet Routing Table: 66 Paths with bogon ASNs present in the IPv4 Routing Table: 2280 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: 2313 Number of instances of unregistered ASNs: 2313 Number of 32-bit ASNs allocated by the RIRs: 47202 Number of 32-bit ASNs visible in the Routing Table: 733 Prefixes from 32-bit ASNs in the Routing Table: 1949 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: 189059072 Equivalent to 11 /8s, 68 /16s and 208 /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: 5220 Total APNIC prefixes after maximum aggregation: 2451 APNIC Deaggregation factor: 2.13 Prefixes being announced from the APNIC address blocks: 7497 Unique aggregates announced from the APNIC address blocks: 2981 APNIC Region origin ASes present in the Internet Routing Table: 644 APNIC Prefixes per ASN: 11.64 APNIC Region origin ASes announcing only one prefix: 264 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: 266 Number of APNIC addresses announced to Internet: 39025408 Equivalent to 2 /8s, 83 /16s and 123 /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: 8046 Total ARIN prefixes after maximum aggregation: 4486 ARIN Deaggregation factor: 1.79 Prefixes being announced from the ARIN address blocks: 8094 Unique aggregates announced from the ARIN address blocks: 4950 ARIN Region origin ASes present in the Internet Routing Table: 1250 ARIN Prefixes per ASN: 6.48 ARIN Region origin ASes announcing only one prefix: 444 ARIN Region transit ASes present in the Internet Routing Table: 158 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: 215 Number of ARIN addresses announced to Internet: 85497344 Equivalent to 5 /8s, 24 /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: 3634 Total RIPE prefixes after maximum aggregation: 2906 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3619 Unique aggregates announced from the RIPE address blocks: 2943 RIPE Region origin ASes present in the Internet Routing Table: 667 RIPE Prefixes per ASN: 5.43 RIPE Region origin ASes announcing only one prefix: 297 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: 58054144 Equivalent to 3 /8s, 117 /16s and 214 /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: 1272 Total LACNIC prefixes after maximum aggregation: 488 LACNIC Deaggregation factor: 2.61 Prefixes being announced from the LACNIC address blocks: 1272 Unique aggregates announced from the LACNIC address blocks: 658 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: 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: 1167 Total AfriNIC prefixes after maximum aggregation: 171 AfriNIC Deaggregation factor: 6.82 Prefixes being announced from the AfriNIC address blocks: 1166 Unique aggregates announced from the AfriNIC address blocks: 222 AfriNIC Region origin ASes present in the Internet Routing Table: 52 AfriNIC Prefixes per ASN: 22.42 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: 7.4 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 184 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 22 NKN-CORE-NW NKN Core Network, IN 17882 128 8 38 UNIVISION-AS-AP UNIVISION LLC, MN 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4850 74 0 1 DIGICOM-AS-AP Digicom LLC, MN 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 199 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 680 284 1883 251 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 52 100 37 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 572 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 3422 2 1030 >>UNKNOWN<< 65530 612 0 276 >>UNKNOWN<< 2907 600 2169 462 SINET-AS Research Organization of Informa 2152 584 492 99 CENIC-2152, US 36914 572 82 3 KENET-AS, KE 9484 456 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 2018 375 318 69 TENET-1, ZA 680 284 1883 251 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 572 569 KENET-AS, KE 2152 584 485 CENIC-2152, US 9484 456 450 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet 65530 612 336 -Private Use AS-, ZZ 2018 375 306 TENET-1, ZA 1916 240 199 Rede Nacional de Ensino e Pesquisa, BR 5786 199 198 UPRENET, PR 2920 231 182 LACOE, US 58647 182 180 KAGAWAU-AS Kagawa University, JP 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 /16:1904 /17:404 /18:451 /19:577 /20:819 /21:810 /22:1403 /23:1494 /24:10896 /25:9 /26:4 /27:27 /28:91 /29:938 /30:1482 /31:5 /32:171 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 65510 1639 3422 -Private Use AS-, ZZ 36914 548 572 KENET-AS, KE 9484 357 456 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet Service Provider, MN 65530 291 612 -Private Use AS-, ZZ 8895 106 109 ISU Internet Services Unit ISU, SA 65516 102 204 -Private Use AS-, ZZ 65001 94 198 -Private Use AS-, ZZ 4850 73 74 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 14:93 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 45:51 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 67:39 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 98:2 101:3 102:13 103:440 104:76 108:8 109:7 111:21 112:16 113:1 114:21 116:8 117:61 118:34 119:15 121:28 122:24 123:8 124:1 125:5 128:59 129:47 130:97 131:65 132:68 133:156 134:111 136:200 137:106 138:11 139:5 140:32 141:3 142:26 143:26 144:32 145:4 146:137 147:27 148:200 149:10 150:36 151:10 152:135 153:15 154:40 155:85 156:128 157:25 158:26 159:19 160:35 161:33 162:22 163:74 164:10 165:44 167:28 168:96 169:6 170:19 171:1 172:1 173:5 175:16 177:5 179:13 180:16 181:1 182:12 183:1 184:2 185:51 186:4 187:24 188:16 190:17 191:13 192:1408 193:294 194:145 195:83 196:148 197:354 198:524 199:244 200:304 201:22 202:783 203:463 204:394 205:179 206:200 207:316 208:64 209:135 210:147 211:4 212:146 213:4 216:92 217:22 218:24 219:7 220:16 222:4 End of report