IPv4 R&E Routing Table Report 22:35 GMT Sat 22 Aug, 2026 IPv4 BGP Table (R&E) as seen at RouteViews PacWave. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/PacWave/ Analysis Summary ---------------- BGP routing table entries examined: 34863 Prefixes after maximum aggregation (per Origin AS): 17752 Deaggregation factor: 1.96 Unique aggregates announced (without unneeded subnets): 21007 Total ASes present in the Internet Routing Table: 2855 Prefixes per ASN: 12.21 Origin-only ASes present in the Internet Routing Table: 2480 Origin ASes announcing only one prefix: 1101 Transit ASes present in the Internet Routing Table: 375 Transit-only ASes present in the Internet Routing Table: 60 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.2 Max AS path length visible: 44 Max AS path prepend of ASN ( 30075) 41 Prefixes from unregistered ASNs in the Routing Table: 6 Number of instances of unregistered ASNs: 6 Number of 32-bit ASNs allocated by the RIRs: 50926 Number of 32-bit ASNs visible in the Routing Table: 754 Prefixes from 32-bit ASNs in the Routing Table: 5689 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: 5 Number of addresses announced to Internet: 373178112 Equivalent to 22 /8s, 62 /16s and 63 /24s Percentage of available address space announced: 10.1 Percentage of allocated address space announced: 10.1 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: 4601 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4838 Total APNIC prefixes after maximum aggregation: 2367 APNIC Deaggregation factor: 2.04 Prefixes being announced from the APNIC address blocks: 5149 Unique aggregates announced from the APNIC address blocks: 2924 APNIC Region origin ASes present in the Internet Routing Table: 610 APNIC Prefixes per ASN: 8.44 APNIC Region origin ASes announcing only one prefix: 259 APNIC Region transit ASes present in the Internet Routing Table: 54 Average APNIC Region AS path length visible: 3.9 Max APNIC Region AS path length visible: 11 Number of APNIC region 32-bit ASNs visible in the Routing Table: 258 Number of APNIC addresses announced to Internet: 47488768 Equivalent to 2 /8s, 212 /16s and 159 /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: 24281 Total ARIN prefixes after maximum aggregation: 12013 ARIN Deaggregation factor: 2.02 Prefixes being announced from the ARIN address blocks: 22954 Unique aggregates announced from the ARIN address blocks: 13462 ARIN Region origin ASes present in the Internet Routing Table: 1400 ARIN Prefixes per ASN: 16.40 ARIN Region origin ASes announcing only one prefix: 496 ARIN Region transit ASes present in the Internet Routing Table: 172 Average ARIN Region AS path length visible: 2.8 Max ARIN Region AS path length visible: 44 Number of ARIN region 32-bit ASNs visible in the Routing Table: 257 Number of ARIN addresses announced to Internet: 223230720 Equivalent to 13 /8s, 78 /16s and 59 /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: 3506 Total RIPE prefixes after maximum aggregation: 2773 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 4503 Unique aggregates announced from the RIPE address blocks: 3811 RIPE Region origin ASes present in the Internet Routing Table: 619 RIPE Prefixes per ASN: 7.27 RIPE Region origin ASes announcing only one prefix: 278 RIPE Region transit ASes present in the Internet Routing Table: 101 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 14 Number of RIPE region 32-bit ASNs visible in the Routing Table: 167 Number of RIPE addresses announced to Internet: 95629568 Equivalent to 5 /8s, 179 /16s and 49 /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 196608-219547 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: 1031 Total LACNIC prefixes after maximum aggregation: 407 LACNIC Deaggregation factor: 2.53 Prefixes being announced from the LACNIC address blocks: 1042 Unique aggregates announced from the LACNIC address blocks: 522 LACNIC Region origin ASes present in the Internet Routing Table: 126 LACNIC Prefixes per ASN: 8.27 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: 4.5 Max LACNIC Region AS path length visible: 11 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 60 Number of LACNIC addresses announced to Internet: 4247296 Equivalent to 0 /8s, 64 /16s and 207 /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: 1201 Total AfriNIC prefixes after maximum aggregation: 186 AfriNIC Deaggregation factor: 6.46 Prefixes being announced from the AfriNIC address blocks: 1210 Unique aggregates announced from the AfriNIC address blocks: 283 AfriNIC Region origin ASes present in the Internet Routing Table: 36 AfriNIC Prefixes per ASN: 33.61 AfriNIC Region origin ASes announcing only one prefix: 16 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 3.2 Max AfriNIC Region AS path length visible: 11 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 12 Number of AfriNIC addresses announced to Internet: 2578432 Equivalent to 0 /8s, 39 /16s and 88 /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 601 2152 462 SINET-AS - Research Organization of Infor 7497 467 212 24 CSTNET-AS-AP - Computer Network Informati 1237 199 72 154 KREONET-AS-KR-KR - KISTI, KR 4538 189 4191 71 ERX-CERNET-BKB - China Education and Rese 58647 185 18 2 KAGAWAU-AS - Kagawa University, JP 7575 166 281 113 AARNET-AS-AP - Australian Academic and Re 55824 153 19 19 NKN-CORE-NW - NKN Core Network, IN 4762 75 4 1 MAHIDOL-BORDER-AS - Mahidol University, T 1659 69 1466 35 ERX-TANET-ASN1 - Taiwan Academic Network 6262 63 134 56 CSIRO - Commonwealth Scientific and Indus Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 5966 6112 3719 AMAZON-02 - Amazon.com, Inc., US 396982 3459 4879 546 GOOGLE-CLOUD-PLATFORM - Google LLC, US 14618 1394 5303 1054 AMAZON-AES - Amazon.com, Inc., US 714 1315 4136 4 APPLE-ENGINEERING - Apple Inc., US 8075 1155 19789 911 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft C 15169 958 639 60 GOOGLE - Google LLC, US 2152 725 491 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 d'Informations Scientifi Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 295 1884 256 DFN - Verein zur Foerderung eines Deutsch 786 210 1684 192 JANET - Jisc Services Limited, GB 559 117 533 106 Switch - SWITCH, CH 1103 99 1758 84 SURFNET-NL - SURF B.V., NL 8895 98 24 5 ISU - King Abdul Aziz City for Science an 2614 91 26 67 RoEduNet - Agentia de Administrare a Rete 137 83 677 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 68 623 62 FR-RENATER - Renater, FR Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 219 161 40 AS1916 - Rede Nacional de Ensino e Pesqui 11340 107 24 49 AS11340 - Red Universitaria Nacional, CL 271640 61 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 53 3 22 AS61468 - CEDIA, EC 1251 37 31 26 AS1251 - FUNDACAO DE AMPARO A PESQUISA DO 3596 29 2 8 AS3596 - Universidad Autonoma Metropolita 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/PacWave/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 545 82 3 Kenya Education Network - Kenya Education 2018 375 318 69 Tertiary Education and Research Network o 2561 68 4 34 Egyptian Universities Network (EUN) - Egy 8094 50 48 15 North West University - North West Univer 37215 46 8 1 Malawi Research and Education Network - M 6879 24 2 9 ENSTINET - ENSTINET, EG 327700 13 16 1 Mozambique Research & Education Network - 37501 11 49 6 University of the Free State - University 37654 9 1 5 Rwanda Ministry of Education - Rwanda Min 36982 8 33 8 University of Cape Town - University of C Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 5966 6112 3719 AMAZON-02 - Amazon.com, Inc., US 396982 3459 4879 546 GOOGLE-CLOUD-PLATFORM - Google LLC, US 14618 1394 5303 1054 AMAZON-AES - Amazon.com, Inc., US 714 1315 4136 4 APPLE-ENGINEERING - Apple Inc., US 8075 1155 19789 911 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft C 15169 958 639 60 GOOGLE - Google LLC, US 2152 725 491 98 CENIC-2152 - CENIC, US 2907 601 2152 462 SINET-AS - Research Organization of Infor 36914 545 82 3 Kenya Education Network - Kenya Education 7497 467 212 24 CSTNET-AS-AP - Computer Network Informati Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 396982 3459 2913 GOOGLE-CLOUD-PLATFORM - Google LLC, US 714 1315 1311 APPLE-ENGINEERING - Apple Inc., US 15169 958 898 GOOGLE - Google LLC, US 2152 725 627 CENIC-2152 - CENIC, US 36914 545 542 Kenya Education Network - Kenya Education Netwo 7497 467 443 CSTNET-AS-AP - Computer Network Information Cen 14618 1394 340 AMAZON-AES - Amazon.com, Inc., US 2018 375 306 Tertiary Education and Research Network of Sout 8075 1155 244 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corpora 5786 197 196 UPRENET - University of Puerto Rico, PR Complete listing at https://bgp.nsrc.org/REN/PacWave/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 65208 PRIVATE 63.225.1.0/24 11570 AS11570 - Eastern New M 26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276 - University 64011 UNALLOCATED 130.215.0.0/16 10326 WPI - Worcester Polytec 65208 PRIVATE 206.206.156.0/22 11570 AS11570 - Eastern New M 65208 PRIVATE 216.161.32.0/23 11570 AS11570 - Eastern New M 401367 UNALLOCATED 216.186.25.0/24 10430 WA-K20 - Washington Sta Complete listing at https://bgp.nsrc.org/REN/PacWave/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.130.160.0/24 Origin: 16509 AMAZON-02 - Amazon.com, Inc., US 23.130.160.0/24 Transit: 101 WASH-NSF-AS - University of Washington, 103.177.50.0/23 Origin: 396982 GOOGLE-CLOUD-PLATFORM - Google LLC, US 103.177.50.0/23 Transit: 15169 GOOGLE - Google LLC, US 164.160.192.0/21 Origin: 37661 Nigerian Research and Education Network 164.160.192.0/21 Transit: 37288 West and Central African Research Networ 202.14.117.0/24 Origin: 17827 STOU-AS-TH - Sukhothai Thammathirat Open 202.14.117.0/24 Transit: 4621 UNINET-AS-AP - UNINET-TH, TH 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/PacWave/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:1 /9:3 /10:3 /11:14 /12:40 /13:65 /14:139 /15:269 /16:2537 /17:694 /18:669 /19:945 /20:3112 /21:1634 /22:2412 /23:2767 /24:19558 /25:0 /26:0 /27:0 /28:1 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 16509 1060 5966 AMAZON-02 - Amazon.com, Inc., US 36914 521 545 Kenya Education Network - Kenya Education Network, KE 14618 398 1394 AMAZON-AES - Amazon.com, Inc., US 396982 298 3459 GOOGLE-CLOUD-PLATFORM - Google LLC, US 15169 287 958 GOOGLE - Google LLC, US 8075 209 1155 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US 8895 95 98 ISU - King Abdul Aziz City for Science and Technology, SA 2152 87 725 CENIC-2152 - CENIC, US 31638 50 50 ASN-LEPIDA - Lepida S.c.p.A., IT 37215 40 46 Malawi Research and Education Network - MAREN - Malawi Research and Education Network - MAREN, MW Complete listing at https://bgp.nsrc.org/REN/PacWave/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:26 2:2 3:427 4:2 5:36 6:5 8:45 12:2 13:344 14:96 15:203 16:68 17:379 18:332 20:22 23:230 24:17 31:14 34:33 35:137 36:1 37:29 38:13 40:11 41:232 42:16 43:2 44:7 45:105 46:19 47:1 49:13 50:15 52:592 54:114 57:15 58:14 59:20 60:6 61:3 62:15 63:64 64:232 65:62 66:154 67:84 68:29 69:101 70:10 71:2 72:32 74:188 75:6 76:31 77:6 78:4 79:12 80:13 81:30 82:6 83:8 84:12 85:32 86:4 87:7 88:1 89:33 91:58 92:6 93:49 94:16 95:3 96:8 97:2 98:16 99:138 101:5 102:10 103:433 104:244 107:63 108:159 109:21 110:1 111:9 113:6 114:32 115:1 116:15 117:10 118:35 119:38 121:19 122:11 123:6 124:42 125:1 126:1 128:60 129:65 130:165 131:97 132:61 133:160 134:144 135:12 136:283 137:154 138:28 139:27 140:53 141:27 142:356 143:70 144:35 145:29 146:136 147:95 148:73 149:28 150:50 151:64 152:153 153:178 154:43 155:174 156:147 157:54 158:55 159:200 160:47 161:73 162:132 163:115 164:31 165:100 166:5 167:95 168:181 169:15 170:144 171:1 172:195 173:144 174:3 175:15 176:8 177:5 178:6 179:13 180:12 181:2 182:3 184:10 185:178 186:5 187:10 188:27 190:25 191:13 192:1904 193:350 194:130 195:122 196:148 197:334 198:765 199:454 200:307 201:7 202:637 203:470 204:515 205:240 206:274 207:442 208:180 209:276 210:237 211:16 212:155 213:29 214:8 216:292 217:29 218:21 219:7 220:15 222:5 223:16 End of report