IPv4 R&E Routing Table Report 20:20 GMT Mon 23 Mar, 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: 22646 Prefixes after maximum aggregation (per Origin AS): 12592 Deaggregation factor: 1.80 Unique aggregates announced (without unneeded subnets): 12136 Number of IPv4 prefixes with a valid ROA: 8802 Number of IPv4 prefixes with an invalid ROA: 2779 Number of IPv4 prefixes with no ROA: 11065 Total ASes present in the Internet Routing Table: 2813 Prefixes per ASN: 8.05 Origin-only ASes present in the Internet Routing Table: 2428 Origin ASes announcing only one prefix: 1078 Transit ASes present in the Internet Routing Table: 385 Transit-only ASes present in the Internet Routing Table: 67 Paths with bogon ASNs present in the IPv4 Routing Table: 2302 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: 2305 Number of instances of unregistered ASNs: 2305 Number of 32-bit ASNs allocated by the RIRs: 49057 Number of 32-bit ASNs visible in the Routing Table: 725 Prefixes from 32-bit ASNs in the Routing Table: 2024 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: 198463488 Equivalent to 11 /8s, 212 /16s and 80 /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: 4863 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 5678 Total APNIC prefixes after maximum aggregation: 2511 APNIC Deaggregation factor: 2.26 Prefixes being announced from the APNIC address blocks: 7980 Unique aggregates announced from the APNIC address blocks: 2946 APNIC Region origin ASes present in the Internet Routing Table: 659 APNIC Prefixes per ASN: 12.11 APNIC Region origin ASes announcing only one prefix: 275 APNIC Region transit ASes present in the Internet Routing Table: 60 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: 272 Number of APNIC addresses announced to Internet: 45616128 Equivalent to 2 /8s, 184 /16s and 12 /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: 8815 Total ARIN prefixes after maximum aggregation: 4926 ARIN Deaggregation factor: 1.79 Prefixes being announced from the ARIN address blocks: 8827 Unique aggregates announced from the ARIN address blocks: 5492 ARIN Region origin ASes present in the Internet Routing Table: 1301 ARIN Prefixes per ASN: 6.78 ARIN Region origin ASes announcing only one prefix: 456 ARIN Region transit ASes present in the Internet Routing Table: 166 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: 222 Number of ARIN addresses announced to Internet: 88927488 Equivalent to 5 /8s, 76 /16s and 237 /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: 2762 RIPE Region origin ASes present in the Internet Routing Table: 602 RIPE Prefixes per ASN: 5.63 RIPE Region origin ASes announcing only one prefix: 270 RIPE Region transit ASes present in the Internet Routing Table: 104 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 152 Number of RIPE addresses announced to Internet: 57523968 Equivalent to 3 /8s, 109 /16s and 191 /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: 1202 Total LACNIC prefixes after maximum aggregation: 479 LACNIC Deaggregation factor: 2.51 Prefixes being announced from the LACNIC address blocks: 1202 Unique aggregates announced from the LACNIC address blocks: 654 LACNIC Region origin ASes present in the Internet Routing Table: 131 LACNIC Prefixes per ASN: 9.18 LACNIC Region origin ASes announcing only one prefix: 58 LACNIC Region transit ASes present in the Internet Routing Table: 26 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: 59 Number of LACNIC addresses announced to Internet: 3930112 Equivalent to 0 /8s, 59 /16s and 248 /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: 1243 Total AfriNIC prefixes after maximum aggregation: 200 AfriNIC Deaggregation factor: 6.21 Prefixes being announced from the AfriNIC address blocks: 1242 Unique aggregates announced from the AfriNIC address blocks: 279 AfriNIC Region origin ASes present in the Internet Routing Table: 42 AfriNIC Prefixes per ASN: 29.57 AfriNIC Region origin ASes announcing only one prefix: 19 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 9 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 20 Number of AfriNIC addresses announced to Internet: 2463232 Equivalent to 0 /8s, 37 /16s and 150 /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 454 180 23 CSTNET-AS-AP Computer Network Information 9484 452 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 165 281 112 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 682 492 98 CENIC-2152 - CENIC, US 2920 226 44 49 LACOE - Los Angeles County Office of Educ 376 197 162 151 RISQ-AS - Reseau dInformations Scientifiq 5786 197 16 1 UPRENET - University of Puerto Rico, PR 668 182 555 155 DNIC-AS-00668 - United States Department 18558 141 18 5 NETBLK-RCOEK - Riverside County Office of 81 109 408 33 NCREN - MCNC, US 21976 92 34 16 NJEDGE-NET - NJEDge.Net, Inc., US 237 83 542 49 MERIT-AS-14 - Merit Network Inc., US 3477 82 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 786 209 1731 188 JANET Jisc Services Limited, GB 559 115 533 105 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 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 204 161 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 66 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 52 3 21 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 559 82 3 KENET-AS, KE 2018 375 318 69 TENET-1, ZA 2561 68 4 34 EUN, EG 8094 46 48 21 PUKNET, ZA 37215 44 8 1 MAREN, MW 327700 36 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37501 11 49 6 UOFS, ZA 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 2680 2 967 >>UNKNOWN<< 65510 1370 1 563 >>UNKNOWN<< 2152 682 492 98 CENIC-2152 - CENIC, US 2907 606 2153 464 SINET-AS Research Organization of Informa 36914 559 82 3 KENET-AS, KE 7497 454 180 23 CSTNET-AS-AP Computer Network Information 9484 452 5 6 MOBINET-AS-MN Mobinet LLC. AS Mobinet Int 2018 375 318 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 1370 807 -Private Use AS-, ZZ 2152 682 584 CENIC-2152 - CENIC, US 36914 559 556 KENET-AS, KE 9484 452 446 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet 7497 454 431 CSTNET-AS-AP Computer Network Information Cente 2018 375 306 TENET-1, ZA 5786 197 196 UPRENET - University of Puerto Rico, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 2920 226 177 LACOE - Los Angeles County Office of Education, 1916 204 164 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 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 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 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 /15:113 /16:1955 /17:420 /18:459 /19:605 /20:842 /21:902 /22:1480 /23:1653 /24:11408 /25:9 /26:4 /27:27 /28:91 /29:969 /30:1465 /31:3 /32:175 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 65530 1272 2680 -Private Use AS-, ZZ 65510 667 1370 -Private Use AS-, ZZ 36914 535 559 KENET-AS, KE 9484 352 452 MOBINET-AS-MN Mobinet LLC. AS Mobinet Internet Service Provider, MN 65516 108 216 -Private Use AS-, ZZ 8895 100 103 ISU Internet Services Unit ISU, SA 65001 98 206 -Private Use AS-, ZZ 2152 78 682 CENIC-2152 - CENIC, US 4850 71 72 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 23:11 24:2 27:4 31:1 35:3 36:2 37:26 38:12 40:1 41:261 42:17 43:8 44:6 45:38 46:4 47:1 49:13 50:5 58:14 59:24 60:6 61:3 62:6 63:32 64:47 65:6 66:93 67:42 68:13 69:17 70:3 72:6 74:57 76:36 77:4 78:3 79:5 80:7 81:27 82:3 83:6 84:8 85:26 86:4 87:1 89:17 91:38 93:14 94:2 95:2 96:5 97:1 98:3 101:5 102:6 103:437 104:77 108:8 109:10 111:7 112:16 113:2 114:24 116:9 117:5 118:33 119:40 121:17 122:24 123:8 124:43 125:5 128:58 129:49 130:101 131:65 132:64 133:157 134:121 136:200 137:121 138:11 139:5 140:34 141:4 142:31 143:27 144:8 145:4 146:136 147:67 148:234 149:11 150:36 151:9 152:126 153:15 154:39 155:87 156:123 157:30 158:28 159:112 160:35 161:34 162:24 163:78 164:11 165:52 166:1 167:35 168:81 169:7 170:18 171:1 172:1 173:5 175:15 177:6 179:12 180:16 181:1 182:11 183:2 184:2 185:45 186:4 187:8 188:22 190:17 191:13 192:1472 193:312 194:120 195:97 196:149 197:345 198:587 199:282 200:292 201:7 202:777 203:458 204:416 205:185 206:203 207:350 208:39 209:160 210:231 211:15 212:138 213:4 214:8 216:95 217:22 218:22 219:7 220:16 222:4 223:17 End of report