IPv4 R&E Routing Table Report 20:20 GMT Mon 25 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: 22740 Prefixes after maximum aggregation (per Origin AS): 12532 Deaggregation factor: 1.81 Unique aggregates announced (without unneeded subnets): 12062 Number of IPv4 prefixes with a valid ROA: 8935 Number of IPv4 prefixes with an invalid ROA: 2938 Number of IPv4 prefixes with no ROA: 10867 Total ASes present in the Internet Routing Table: 2791 Prefixes per ASN: 8.15 Origin-only ASes present in the Internet Routing Table: 2418 Origin ASes announcing only one prefix: 1064 Transit ASes present in the Internet Routing Table: 373 Transit-only ASes present in the Internet Routing Table: 60 Paths with bogon ASNs present in the IPv4 Routing Table: 2312 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: 2315 Number of instances of unregistered ASNs: 2315 Number of 32-bit ASNs allocated by the RIRs: 49892 Number of 32-bit ASNs visible in the Routing Table: 725 Prefixes from 32-bit ASNs in the Routing Table: 2022 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: 198712832 Equivalent to 11 /8s, 216 /16s and 30 /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: 4844 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 5833 Total APNIC prefixes after maximum aggregation: 2509 APNIC Deaggregation factor: 2.32 Prefixes being announced from the APNIC address blocks: 8145 Unique aggregates announced from the APNIC address blocks: 2949 APNIC Region origin ASes present in the Internet Routing Table: 653 APNIC Prefixes per ASN: 12.47 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: 4.8 Max APNIC Region AS path length visible: 35 Number of APNIC region 32-bit ASNs visible in the Routing Table: 269 Number of APNIC addresses announced to Internet: 45740032 Equivalent to 2 /8s, 185 /16s and 240 /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: 8909 Total ARIN prefixes after maximum aggregation: 4991 ARIN Deaggregation factor: 1.79 Prefixes being announced from the ARIN address blocks: 8922 Unique aggregates announced from the ARIN address blocks: 5581 ARIN Region origin ASes present in the Internet Routing Table: 1304 ARIN Prefixes per ASN: 6.84 ARIN Region origin ASes announcing only one prefix: 456 ARIN Region transit ASes present in the Internet Routing Table: 162 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: 227 Number of ARIN addresses announced to Internet: 89432832 Equivalent to 5 /8s, 84 /16s and 163 /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: 2714 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3391 Unique aggregates announced from the RIPE address blocks: 2763 RIPE Region origin ASes present in the Internet Routing Table: 598 RIPE Prefixes per ASN: 5.67 RIPE Region origin ASes announcing only one prefix: 267 RIPE Region transit ASes present in the Internet Routing Table: 102 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: 152 Number of RIPE addresses announced to Internet: 57277184 Equivalent to 3 /8s, 105 /16s and 251 /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: 1068 Total LACNIC prefixes after maximum aggregation: 401 LACNIC Deaggregation factor: 2.66 Prefixes being announced from the LACNIC address blocks: 1067 Unique aggregates announced from the LACNIC address blocks: 488 LACNIC Region origin ASes present in the Internet Routing Table: 122 LACNIC Prefixes per ASN: 8.75 LACNIC Region origin ASes announcing only one prefix: 50 LACNIC Region transit ASes present in the Internet Routing Table: 21 Average LACNIC Region AS path length visible: 6.7 Max LACNIC Region AS path length visible: 11 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 56 Number of LACNIC addresses announced to Internet: 3807488 Equivalent to 0 /8s, 58 /16s and 25 /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: 1212 Total AfriNIC prefixes after maximum aggregation: 199 AfriNIC Deaggregation factor: 6.09 Prefixes being announced from the AfriNIC address blocks: 1212 Unique aggregates announced from the AfriNIC address blocks: 279 AfriNIC Region origin ASes present in the Internet Routing Table: 43 AfriNIC Prefixes per ASN: 28.19 AfriNIC Region origin ASes announcing only one prefix: 20 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: 21 Number of AfriNIC addresses announced to Internet: 2454784 Equivalent to 0 /8s, 37 /16s and 117 /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 - for assignment to JPNIC member 7497 465 212 24 CSTNET-AS-AP - Computer Network Informati 9484 449 5 6 AS9484-236 - Mobinet LLC, MN 1659 222 1466 35 ERX-TANET-ASN1 - Taiwan Academic Network 1237 199 72 154 KREONET-AS-KR-KR - KISTI, KR 58647 182 18 2 KAGAWAU-AS - JPNIC-2Byte-ASBLOCK-AP, JP 4538 181 4191 71 ERX-CERNET-BKB - China Education and Rese 7575 166 281 113 AARNET-AS-AP - Australian Academic and Re 55824 152 19 20 AS55824-529 - National Knowledge Network, 17882 129 8 37 AS17882-230 - MCS Com Co Ltd, 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 694 491 97 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 d'Informations Scientifi 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 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 Deutsch 786 210 1684 192 JANET - Jisc Services Limited, GB 559 115 533 105 Switch - SWITCH, CH 1103 100 1759 85 SURFNET-NL - SURF B.V., NL 8895 98 24 5 ISU - King Abdul Aziz City for Science an 2614 87 26 67 RoEduNet - Agentia de Administrare a Rete 137 82 677 77 ASGARR - Consortium GARR, IT 1930 78 88 73 RCCN - Fundacao para a Ciencia e a Tecnol 553 75 366 75 BELWUE - Universitaet Stuttgart, DE 2200 64 630 59 FR-RENATER - Renater, FR 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 220 161 40 AS1916 - Rede Nacional de Ensino e Pesqui 11340 110 25 49 AS11340 - Red Universitaria Nacional, CL 3596 66 8 4 AS3596 - Universidad Autonoma Metropolita 271640 65 8 1 AS271640 - UNIVERSIDADE FEDERAL DE VICOSA 2715 57 84 39 AS2715 - Fundacao Carlos Chagas Filho de 19611 53 17 2 AS19611 - Associacao Antonio Vieira - Uni 61468 51 3 20 AS61468 - CEDIA, EC 1251 37 31 26 AS1251 - FUNDACAO DE AMPARO A PESQUISA DO 21612 27 16 1 AS21612 - FUNDACAO INSTITUTO OSWALDO CRUZ 20191 26 16 1 AS20191 - Pontificia Universidad Catolica 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 554 82 3 Kenya Education Network - Kenya Education 2018 374 318 69 TENET (The UNINET Project) - TENET (The U 2561 68 4 34 Egyptian Universities Network (EUN) - Egy 8094 46 48 21 North West University - North West Univer 37215 45 8 1 Malawi Research and Education Network - M 6879 24 2 9 ENSTINET - ENSTINET, EG 37501 11 49 6 University of the Free State - University 327700 11 16 1 Mozambique Research & Education Network - 37182 10 8 1 Tanzania Education And Research Network - 37654 9 1 5 Rwanda Ministry of Education - Rwanda Min 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 2998 2 1020 >>UNKNOWN<< 65510 1052 1 464 >>UNKNOWN<< 2152 694 491 97 CENIC-2152 - CENIC, US 2907 606 2153 464 SINET-AS - for assignment to JPNIC member 36914 554 82 3 Kenya Education Network - Kenya Education 7497 465 212 24 CSTNET-AS-AP - Computer Network Informati 9484 449 5 6 AS9484-236 - Mobinet LLC, MN 2018 374 318 69 TENET (The UNINET Project) - TENET (The U 680 291 1883 253 DFN - Verein zur Foerderung eines Deutsch 65516 232 0 88 >>UNKNOWN<< Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 2152 694 597 CENIC-2152 - CENIC, US 65510 1052 588 UNASSIGNED 36914 554 551 Kenya Education Network - Kenya Education Netwo 9484 449 443 AS9484-236 - Mobinet LLC, MN 7497 465 441 CSTNET-AS-AP - Computer Network Information Cen 2018 374 305 TENET (The UNINET Project) - TENET (The UNINET 5786 197 196 UPRENET - University of Puerto Rico, PR 1659 222 187 ERX-TANET-ASN1 - Taiwan Academic Network (TANet 1916 220 180 AS1916 - Rede Nacional de Ensino e Pesquisa, BR 58647 182 180 KAGAWAU-AS - JPNIC-2Byte-ASBLOCK-AP, JP 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 AS9484-236 - Mobinet LL 65530 PRIVATE 45.117.32.40/29 65510 UNASSIGNED 65001 PRIVATE 45.117.32.48/29 65510 UNASSIGNED 65530 PRIVATE 45.117.32.56/29 65510 UNASSIGNED 65530 PRIVATE 45.117.32.64/29 65510 UNASSIGNED 65530 PRIVATE 45.117.32.72/29 65510 UNASSIGNED 65530 PRIVATE 45.117.32.80/29 65510 UNASSIGNED 65510 PRIVATE 45.117.32.88/29 9484 AS9484-236 - Mobinet LL 65530 PRIVATE 45.117.32.96/29 65510 UNASSIGNED 65530 PRIVATE 45.117.32.104/29 65510 UNASSIGNED 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 AS17827-175 - Office of Info.Tech. Admin 202.14.117.0/24 Transit: 4621 AS4621-14 - Office of Info.Tech. Admin. 203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP - Adelaide Uni 203.9.156.0/24 Transit: 7575 AARNET-AS-AP - Australian Academic and R 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 /16:1952 /17:421 /18:470 /19:615 /20:856 /21:918 /22:1504 /23:1690 /24:11387 /25:9 /26:5 /27:26 /28:91 /29:978 /30:1455 /31:3 /32:180 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 65530 1428 2998 UNASSIGNED 36914 530 554 Kenya Education Network - Kenya Education Network, KE 65510 511 1052 UNASSIGNED 9484 349 449 AS9484-236 - Mobinet LLC, MN 65516 116 232 UNASSIGNED 65001 99 208 UNASSIGNED 8895 95 98 ISU - King Abdul Aziz City for Science and Technology, SA 2152 84 694 CENIC-2152 - CENIC, US 4850 68 69 AS4850-243 - DIGICOM LLC, MN 31638 48 48 ASN-LEPIDA - Lepida S.c.p.A., IT Complete listing at https://bgp.nsrc.org/REN/Erdemnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:19 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 41:235 42:16 43:8 44:6 45:40 46:4 47:1 49:13 50:7 58:13 59:24 60:6 61:3 62:6 63:36 64:48 65:8 66:92 67:41 68:14 69:18 70:3 72:6 74:57 76:27 77:4 78:3 79:6 80:7 81:27 82:3 83:7 84:8 85:26 86:4 87:1 89:17 91:36 93:14 94:2 95:2 96:5 97:1 98:3 101:5 102:6 103:432 104:86 107:13 108:9 109:13 111:7 112:16 113:2 114:24 116:9 117:5 118:33 119:44 121:18 122:24 123:8 124:43 125:3 128:58 129:48 130:101 131:70 132:62 133:157 134:122 136:199 137:121 138:11 139:5 140:86 141:8 142:32 143:25 144:8 145:13 146:135 147:67 148:73 149:11 150:36 151:8 152:126 153:15 154:39 155:88 156:123 157:29 158:28 159:112 160:35 161:37 162:23 163:86 164:10 165:49 166:1 167:34 168:104 169:7 170:26 171:1 172:1 173:5 175:15 177:5 179:12 180:16 181:1 182:11 183:2 184:2 185:42 186:4 187:8 188:22 190:17 191:13 192:1477 193:307 194:127 195:97 196:150 197:342 198:590 199:281 200:312 201:5 202:784 203:454 204:426 205:184 206:202 207:353 208:41 209:161 210:240 211:15 212:135 213:4 214:8 216:94 217:22 218:22 219:7 220:16 222:4 223:17 End of report