IPv4 R&E Routing Table Report 20:20 GMT Mon 04 May, 2026 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: 22651 Prefixes after maximum aggregation (per Origin AS): 12607 Deaggregation factor: 1.80 Unique aggregates announced (without unneeded subnets): 12189 Number of IPv4 prefixes with a valid ROA: 8839 Number of IPv4 prefixes with an invalid ROA: 2783 Number of IPv4 prefixes with no ROA: 11029 Total ASes present in the Internet Routing Table: 2787 Prefixes per ASN: 8.13 Origin-only ASes present in the Internet Routing Table: 2413 Origin ASes announcing only one prefix: 1057 Transit ASes present in the Internet Routing Table: 374 Transit-only ASes present in the Internet Routing Table: 58 Paths with bogon ASNs present in the IPv4 Routing Table: 2303 Average AS path length visible in the Internet Routing Table: 5.6 Max AS path length visible: 35 Max AS path prepend of ASN (152692) 32 Prefixes from unregistered ASNs in the Routing Table: 2306 Number of instances of unregistered ASNs: 2306 Number of 32-bit ASNs allocated by the RIRs: 49617 Number of 32-bit ASNs visible in the Routing Table: 722 Prefixes from 32-bit ASNs in the Routing Table: 2010 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: 2 Number of addresses announced to Internet: 198851328 Equivalent to 11 /8s, 218 /16s and 59 /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: 4823 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 5672 Total APNIC prefixes after maximum aggregation: 2510 APNIC Deaggregation factor: 2.26 Prefixes being announced from the APNIC address blocks: 7975 Unique aggregates announced from the APNIC address blocks: 2945 APNIC Region origin ASes present in the Internet Routing Table: 655 APNIC Prefixes per ASN: 12.18 APNIC Region origin ASes announcing only one prefix: 271 APNIC Region transit ASes present in the Internet Routing Table: 61 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 35 Number of APNIC region 32-bit ASNs visible in the Routing Table: 270 Number of APNIC addresses announced to Internet: 45810944 Equivalent to 2 /8s, 187 /16s and 5 /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: 8836 Total ARIN prefixes after maximum aggregation: 4971 ARIN Deaggregation factor: 1.78 Prefixes being announced from the ARIN address blocks: 8849 Unique aggregates announced from the ARIN address blocks: 5556 ARIN Region origin ASes present in the Internet Routing Table: 1295 ARIN Prefixes per ASN: 6.83 ARIN Region origin ASes announcing only one prefix: 448 ARIN Region transit ASes present in the Internet Routing Table: 161 Average ARIN Region AS path length visible: 6.4 Max ARIN Region AS path length visible: 18 Number of ARIN region 32-bit ASNs visible in the Routing Table: 225 Number of ARIN addresses announced to Internet: 89221376 Equivalent to 5 /8s, 81 /16s and 105 /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, 393216-404380 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: 3403 Total RIPE prefixes after maximum aggregation: 2719 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3391 Unique aggregates announced from the RIPE address blocks: 2756 RIPE Region origin ASes present in the Internet Routing Table: 600 RIPE Prefixes per ASN: 5.65 RIPE Region origin ASes announcing only one prefix: 268 RIPE Region transit ASes present in the Internet Routing Table: 103 Average RIPE Region AS path length visible: 5.8 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 151 Number of RIPE addresses announced to Internet: 57442304 Equivalent to 3 /8s, 108 /16s and 128 /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: 1230 Total LACNIC prefixes after maximum aggregation: 479 LACNIC Deaggregation factor: 2.57 Prefixes being announced from the LACNIC address blocks: 1229 Unique aggregates announced from the LACNIC address blocks: 654 LACNIC Region origin ASes present in the Internet Routing Table: 127 LACNIC Prefixes per ASN: 9.68 LACNIC Region origin ASes announcing only one prefix: 52 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 7.1 Max LACNIC Region AS path length visible: 16 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 56 Number of LACNIC addresses announced to Internet: 3922176 Equivalent to 0 /8s, 59 /16s and 217 /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: 1204 Total AfriNIC prefixes after maximum aggregation: 196 AfriNIC Deaggregation factor: 6.14 Prefixes being announced from the AfriNIC address blocks: 1204 Unique aggregates announced from the AfriNIC address blocks: 276 AfriNIC Region origin ASes present in the Internet Routing Table: 41 AfriNIC Prefixes per ASN: 29.37 AfriNIC Region origin ASes announcing only one prefix: 18 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 5.2 Max AfriNIC Region AS path length visible: 10 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 20 Number of AfriNIC addresses announced to Internet: 2454016 Equivalent to 0 /8s, 37 /16s and 114 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & 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 606 2153 464 SINET-AS Research Organization of Informa 7497 458 212 24 CSTNET-AS-AP Computer Network Information 9484 451 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 1237 199 72 154 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 166 281 113 AARNET-AS-AP Australian Academic and Rese 55824 153 19 21 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 688 492 98 CENIC-2152 - CENIC, US 2920 226 44 49 LACOE - Los Angeles County Office of Educ 5786 197 16 1 UPRENET - University of Puerto Rico, PR 376 196 146 150 RISQ-AS - Reseau dInformations Scientifiq 668 188 585 160 DNIC-AS-00668 - United States Department 18558 141 18 5 NETBLK-RCOEK - Riverside County Office of 81 115 455 35 NCREN - MCNC, US 21976 94 34 16 NJEDGE-NET - NJEDge.Net, Inc., US 237 83 542 49 MERIT-AS-14 - Merit Network Inc., US 3477 81 79 40 NOAA-NWAVE - National Oceanic and Atmosph 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 680 291 1883 253 DFN Verein zur Foerderung eines Deutschen 786 211 1708 188 JANET Jisc Services Limited, GB 559 115 533 105 SWITCH Switch, Swiss Academic and Researc 1103 100 1759 85 SURFNET-NL SURFnet, The Netherlands, NL 8895 100 24 5 ISU Internet Services Unit ISU, SA 2614 87 26 67 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 78 88 73 RCCN Fundacao para a Ciencia e a Tecnolog 553 75 366 75 BELWUE BelWue-Koordination, DE 2200 64 630 59 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 219 161 40 Rede Nacional de Ensino e Pesquisa, BR 28391 161 10 72 Universidad Juarez Autonoma de Tabasco, M 11340 110 25 49 Red Universitaria Nacional, CL 3596 66 8 4 Universidad Autonoma Metropolitana, MX 271640 65 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 57 84 39 Fundacao Carlos Chagas Filho de Amparo a 19611 53 17 2 Associacao Antonio Vieira - Unisinos, BR 61468 51 3 20 CEDIA, EC 1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 21612 27 16 1 FUNDACAO INSTITUTO OSWALDO CRUZ, BR 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 557 82 3 KENET-AS, KE 2018 366 318 69 TENET-1, ZA 2561 68 4 34 EUN, EG 8094 46 48 21 PUKNET, ZA 37215 45 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37501 11 49 6 UOFS, ZA 327700 11 16 1 MoRENet, MZ 37182 10 8 1 TERNET, TZ 37654 9 1 5 RwEdNet-AS, RW 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 65530 2922 2 1015 >>UNKNOWN<< 65510 1118 1 487 >>UNKNOWN<< 2152 688 492 98 CENIC-2152 - CENIC, US 2907 606 2153 464 SINET-AS Research Organization of Informa 36914 557 82 3 KENET-AS, KE 7497 458 212 24 CSTNET-AS-AP Computer Network Information 9484 451 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 2018 366 318 69 TENET-1, ZA 680 291 1883 253 DFN Verein zur Foerderung eines Deutschen 2920 226 44 49 LACOE - Los Angeles County Office of Educ Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 65510 1118 631 -Private Use AS-, ZZ 2152 688 590 CENIC-2152 - CENIC, US 36914 557 554 KENET-AS, KE 9484 451 445 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet 7497 458 434 CSTNET-AS-AP Computer Network Information Cente 2018 366 297 TENET-1, ZA 5786 197 196 UPRENET - University of Puerto Rico, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 1916 219 179 Rede Nacional de Ensino e Pesquisa, BR 2920 226 177 LACOE - Los Angeles County Office of Education, 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 65530 PRIVATE 45.117.32.40/29 65510 -Private Use AS-, ZZ 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 65530 PRIVATE 45.117.32.80/29 65510 -Private Use AS-, ZZ 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 65530 PRIVATE 45.117.32.104/29 65510 -Private Use AS-, ZZ Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 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 /15:114 /16:1956 /17:419 /18:460 /19:605 /20:842 /21:901 /22:1487 /23:1662 /24:11397 /25:9 /26:5 /27:27 /28:91 /29:972 /30:1456 /31:3 /32:179 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 65530 1390 2922 -Private Use AS-, ZZ 65510 544 1118 -Private Use AS-, ZZ 36914 533 557 KENET-AS, KE 9484 351 451 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet Service Provider, MN 65516 113 226 -Private Use AS-, ZZ 65001 98 206 -Private Use AS-, ZZ 8895 97 100 ISU Internet Services Unit ISU, SA 2152 84 688 CENIC-2152 - CENIC, US 4850 70 71 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 6:5 8:13 12:2 14:96 23:10 24:2 27:4 31:1 35:3 36:2 37:26 38:11 40:1 41:236 42:16 43:8 44:6 45:40 46:4 47:1 49:13 50:5 58:14 59:24 60:6 61:3 62:6 63:32 64:48 65:6 66:92 67:41 68:13 69:18 70:3 72:6 74:57 76:27 77:4 78:3 79:5 80:7 81:27 82:3 83:7 84:8 85:26 86:4 87:1 89:17 91:37 93:14 94:2 95:2 96:5 97:1 98:3 101:5 102:5 103:431 104:77 108:9 109:11 111:7 112:16 113:2 114:24 116:9 117:5 118:33 119:43 121:17 122:24 123:8 124:43 125:3 128:58 129:47 130:101 131:65 132:63 133:157 134:121 136:199 137:121 138:11 139:5 140:34 141:6 142:32 143:27 144:8 145:13 146:135 147:67 148:234 149:11 150:36 151:9 152:126 153:15 154:37 155:87 156:123 157:30 158:28 159:113 160:35 161:35 162:23 163:80 164:10 165:49 166:1 167:33 168:87 169:7 170:17 171:1 172:1 173:5 175:15 177:7 179:12 180:16 181:1 182:11 183:2 184:3 185:43 186:4 187:8 188:22 190:17 191:13 192:1463 193:303 194:126 195:97 196:149 197:344 198:586 199:281 200:313 201:6 202:782 203:456 204:421 205:184 206:205 207:355 208:39 209:165 210:232 211:15 212:135 213:4 214:8 216:94 217:22 218:22 219:7 220:16 222:4 223:17 End of report