IPv4 R&E Routing Table Report 20:15 GMT Wed 23 Jul, 2025 IPv4 BGP Table (R&E) as seen at KREONet2. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/KREONet2/ Analysis Summary ---------------- BGP routing table entries examined: 280829 Prefixes after maximum aggregation (per Origin AS): 120679 Deaggregation factor: 2.33 Unique aggregates announced (without unneeded subnets): 143197 Number of IPv4 prefixes with a valid ROA: 131063 Number of IPv4 prefixes with an invalid ROA: 212 Number of IPv4 prefixes with no ROA: 149554 Total ASes present in the Internet Routing Table: 20943 Prefixes per ASN: 13.41 Origin-only ASes present in the Internet Routing Table: 18049 Origin ASes announcing only one prefix: 8095 Transit ASes present in the Internet Routing Table: 2894 Transit-only ASes present in the Internet Routing Table: 706 Paths with bogon ASNs present in the IPv4 Routing Table: 13 Average AS path length visible in the Internet Routing Table: 5.8 Max AS path length visible: 38 Max AS path prepend of ASN ( 37447) 34 Prefixes from unregistered ASNs in the Routing Table: 352 Number of instances of unregistered ASNs: 384 Number of 32-bit ASNs allocated by the RIRs: 46887 Number of 32-bit ASNs visible in the Routing Table: 8382 Prefixes from 32-bit ASNs in the Routing Table: 33266 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 107 Number of addresses announced to Internet: 1645112325 Equivalent to 98 /8s, 14 /16s and 108 /24s Percentage of available address space announced: 44.4 Percentage of allocated address space announced: 44.4 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: 89653 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 34979 Total APNIC prefixes after maximum aggregation: 7607 APNIC Deaggregation factor: 4.60 Prefixes being announced from the APNIC address blocks: 33878 Unique aggregates announced from the APNIC address blocks: 7914 APNIC Region origin ASes present in the Internet Routing Table: 1238 APNIC Prefixes per ASN: 27.37 APNIC Region origin ASes announcing only one prefix: 493 APNIC Region transit ASes present in the Internet Routing Table: 195 Average APNIC Region AS path length visible: 7.4 Max APNIC Region AS path length visible: 17 Number of APNIC region 32-bit ASNs visible in the Routing Table: 576 Number of APNIC addresses announced to Internet: 173304172 Equivalent to 10 /8s, 84 /16s and 105 /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: 126510 Total ARIN prefixes after maximum aggregation: 66553 ARIN Deaggregation factor: 1.90 Prefixes being announced from the ARIN address blocks: 125115 Unique aggregates announced from the ARIN address blocks: 68026 ARIN Region origin ASes present in the Internet Routing Table: 9351 ARIN Prefixes per ASN: 13.38 ARIN Region origin ASes announcing only one prefix: 3898 ARIN Region transit ASes present in the Internet Routing Table: 878 Average ARIN Region AS path length visible: 5.4 Max ARIN Region AS path length visible: 26 Number of ARIN region 32-bit ASNs visible in the Routing Table: 2198 Number of ARIN addresses announced to Internet: 1028122377 Equivalent to 61 /8s, 71 /16s and 231 /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: 50788 Total RIPE prefixes after maximum aggregation: 27313 RIPE Deaggregation factor: 1.86 Prefixes being announced from the RIPE address blocks: 52198 Unique aggregates announced from the RIPE address blocks: 38077 RIPE Region origin ASes present in the Internet Routing Table: 4648 RIPE Prefixes per ASN: 11.23 RIPE Region origin ASes announcing only one prefix: 1947 RIPE Region transit ASes present in the Internet Routing Table: 699 Average RIPE Region AS path length visible: 5.6 Max RIPE Region AS path length visible: 25 Number of RIPE region 32-bit ASNs visible in the Routing Table: 1910 Number of RIPE addresses announced to Internet: 287332688 Equivalent to 17 /8s, 32 /16s and 89 /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: 57079 Total LACNIC prefixes after maximum aggregation: 16627 LACNIC Deaggregation factor: 3.43 Prefixes being announced from the LACNIC address blocks: 55310 Unique aggregates announced from the LACNIC address blocks: 24674 LACNIC Region origin ASes present in the Internet Routing Table: 4576 LACNIC Prefixes per ASN: 12.09 LACNIC Region origin ASes announcing only one prefix: 1648 LACNIC Region transit ASes present in the Internet Routing Table: 917 Average LACNIC Region AS path length visible: 6.0 Max LACNIC Region AS path length visible: 30 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 3548 Number of LACNIC addresses announced to Internet: 110387776 Equivalent to 6 /8s, 148 /16s and 98 /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: 11121 Total AfriNIC prefixes after maximum aggregation: 2314 AfriNIC Deaggregation factor: 4.81 Prefixes being announced from the AfriNIC address blocks: 14221 Unique aggregates announced from the AfriNIC address blocks: 4403 AfriNIC Region origin ASes present in the Internet Routing Table: 289 AfriNIC Prefixes per ASN: 49.21 AfriNIC Region origin ASes announcing only one prefix: 109 AfriNIC Region transit ASes present in the Internet Routing Table: 71 Average AfriNIC Region AS path length visible: 6.4 Max AfriNIC Region AS path length visible: 38 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 150 Number of AfriNIC addresses announced to Internet: 45838592 Equivalent to 2 /8s, 187 /16s and 113 /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 9808 11798 8761 116 CHINAMOBILE-CN China Mobile Communication 56046 2755 811 189 CMNET-JIANGSU-AP China Mobile communicati 56047 1631 192 50 CMNET-HUNAN-AP China Mobile communication 56041 1610 714 78 CMNET-ZHEJIANG-AP China Mobile communicat 24547 873 177 50 CMNET-V4HEBEI-AS-AP Hebei Mobile Communic 24444 775 500 75 CMNET-V4SHANDONG-AS-AP Shandong Mobile Co 2907 613 2169 463 SINET-AS Research Organization of Informa 45102 536 884 140 ALIBABA-CN-NET Alibaba US Technology Co., 24445 523 496 66 CMNET-V4HENAN-AS-AP Henan Mobile Communic 132525 468 98 29 CMNET-HEILONGJIANG-CN HeiLongJiang Mobile Complete listing at https://bgp.nsrc.org/REN/KREONet2/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13672 40974 5276 AMAZON-02, US 22773 3337 3015 164 ASN-CXA-ALL-CCI-22773-RDC, US 749 3223 54766 2474 DNIC-AS-00749, US 4155 2876 218 1729 USDA-1, US 36352 2556 209 1139 AS-COLOCROSSING, US 367 2507 3073 1183 DNIC-ASBLK-00306-00371, US 6167 1937 4026 519 CELLCO-PART, US 11776 1902 259 215 ATLANTICBB-JOHNSTOWN, US 7018 1659 22849 1248 ATT-INTERNET4, US 209 1655 4889 268 CENTURYLINK-US-LEGACY-QWEST, US Complete listing at https://bgp.nsrc.org/REN/KREONet2/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 39891 1936 130 50 ALJAWWALSTC-AS, SA 20940 1168 91 951 AKAMAI-ASN1, NL 3257 1050 2083 814 GTT-BACKBONE GTT, US 34984 926 116 597 TELLCOM-AS, TR 3215 887 4818 291 France Telecom - Orange, FR 8452 838 1841 16 TE-AS TE-AS, EG 25019 805 1301 130 SAUDINETSTC-AS, SA 212238 655 46 579 CDNEXT, GB 8376 570 52 24 Jordan Data Communications, JO 51167 564 113 248 CONTABO, DE Complete listing at https://bgp.nsrc.org/REN/KREONet2/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 7404 1992 897 UNINET, MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 10620 1691 242 1219 Telmex Colombia S.A., CO 3816 1346 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1196 371 22 Telefonica del Peru S.A.A., PE 26615 1016 2487 55 TIM SA, BR 18881 886 1127 31 TELEFONICA BRASIL S.A, BR 11172 725 124 68 Alestra, S. de R.L. de C.V., MX 27651 650 92 46 ENTEL CHILE S.A., CL 28006 643 76 296 CORPORACION NACIONAL DE TELECOMUNICACIONE Complete listing at https://bgp.nsrc.org/REN/KREONet2/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1419 572 23 RAYA-AS, EG 29571 1157 101 66 ORANGE-COTE-IVOIRE, CI 24863 1048 388 19 LINKdotNET-AS, EG 37069 953 1112 11 MOBINIL, EG 36914 576 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 36935 549 518 29 Vodafone-, EG 36903 456 204 330 MT-MPLS, MA 36992 392 954 200 ETISALAT-MISR, EG 2018 375 318 69 TENET-1, ZA Complete listing at https://bgp.nsrc.org/REN/KREONet2/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13672 40974 5276 AMAZON-02, US 9808 11798 8761 116 CHINAMOBILE-CN China Mobile Communication 8151 7404 1992 897 UNINET, MX 22773 3337 3015 164 ASN-CXA-ALL-CCI-22773-RDC, US 749 3223 54766 2474 DNIC-AS-00749, US 4155 2876 218 1729 USDA-1, US 56046 2755 811 189 CMNET-JIANGSU-AP China Mobile communicati 36352 2556 209 1139 AS-COLOCROSSING, US 367 2507 3073 1183 DNIC-ASBLK-00306-00371, US 11830 1987 369 64 Instituto Costarricense de Electricidad y Complete listing at https://bgp.nsrc.org/REN/KREONet2/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 11798 11682 CHINAMOBILE-CN China Mobile Communications Grou 8151 7404 6507 UNINET, MX 22773 3337 3173 ASN-CXA-ALL-CCI-22773-RDC, US 56046 2755 2566 CMNET-JIANGSU-AP China Mobile communications co 11830 1987 1923 Instituto Costarricense de Electricidad y Telec 39891 1936 1886 ALJAWWALSTC-AS, SA 11776 1902 1687 ATLANTICBB-JOHNSTOWN, US 56047 1631 1581 CMNET-HUNAN-AP China Mobile communications corp 56041 1610 1532 CMNET-ZHEJIANG-AP China Mobile communications c 6167 1937 1418 CELLCO-PART, US Complete listing at https://bgp.nsrc.org/REN/KREONet2/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 22542 UNALLOCATED 8.42.195.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.42.219.0/24 3356 LEVEL3, US 13342 UNALLOCATED 12.17.5.0/24 7018 ATT-INTERNET4, US 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US 21861 UNALLOCATED 12.37.59.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/KREONet2/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://bgp.nsrc.org/REN/KREONet2/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, US 23.147.225.0/24 Origin: 27392 639-DATACENTERS, US 23.147.225.0/24 Transit: 3356 LEVEL3, US 23.147.226.0/24 Origin: 27392 639-DATACENTERS, US 23.147.226.0/24 Transit: 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/KREONet2/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 /8:14 /9:11 /10:31 /11:51 /12:159 /13:216 /14:594 /15:1117 /16:7763 /17:3486 /18:4264 /19:7816 /20:13373 /21:15954 /22:28840 /23:29399 /24:167506 /25:65 /26:81 /27:40 /28:18 /29:15 /30:10 /31:1 /32:5 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 3983 7404 UNINET, MX 22773 2492 3337 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2357 13672 AMAZON-02, US 11830 1691 1987 Instituto Costarricense de Electricidad y Telecom., CR 39891 1081 1936 ALJAWWALSTC-AS, SA 19901 1024 1348 BRSPD-PUBLIC, US 36352 1018 2556 AS-COLOCROSSING, US 10620 996 1691 Telmex Colombia S.A., CO 209 962 1655 CENTURYLINK-US-LEGACY-QWEST, US 11776 883 1902 ATLANTICBB-JOHNSTOWN, US Complete listing at https://bgp.nsrc.org/REN/KREONet2/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:36 2:437 3:854 4:5 5:803 6:145 7:5 8:656 11:171 12:968 13:406 14:135 15:307 16:247 17:3 18:889 20:189 21:4 22:188 23:2665 24:684 27:27 29:19 31:530 32:18 33:1 34:10 35:175 36:2569 37:698 38:2659 39:571 40:84 41:1096 42:21 43:224 44:33 45:4296 46:1005 47:110 49:26 50:480 51:387 52:1379 54:317 55:1110 56:11 57:22 58:18 59:34 60:29 61:61 62:518 63:784 64:1953 65:1135 66:1611 67:1098 68:371 69:1262 70:458 71:189 72:711 74:963 75:319 76:240 77:444 78:365 79:240 80:308 81:401 82:734 83:234 84:322 85:478 86:243 87:220 88:303 89:700 90:107 91:992 92:692 93:483 94:1025 95:743 96:273 97:52 98:498 99:192 100:40 101:62 102:391 103:1297 104:1700 105:183 106:40 107:1532 108:518 109:454 110:46 111:1979 112:684 113:38 114:63 115:25 116:56 117:1130 118:61 119:83 120:1453 121:35 122:70 123:129 124:65 125:25 126:1 128:523 129:395 130:673 131:1023 132:561 133:212 134:469 135:127 136:667 137:534 138:1037 139:443 140:769 141:369 142:1027 143:820 144:435 145:121 146:687 147:509 148:1026 149:733 150:204 151:802 152:608 153:132 154:1253 155:923 156:964 157:405 158:586 159:762 160:861 161:688 162:1060 163:445 164:734 165:582 166:815 167:708 168:1542 169:165 170:1774 171:105 172:1339 173:839 174:359 175:86 176:839 177:1054 178:607 179:834 180:40 181:2397 182:46 183:1080 184:459 185:3461 186:2905 187:1719 188:827 189:2011 190:6011 191:552 192:5304 193:1870 194:1218 195:960 196:720 197:1178 198:2761 199:5074 200:4701 201:3821 202:1014 203:730 204:2288 205:1840 206:1586 207:1633 208:1522 209:2018 210:362 211:466 212:1013 213:795 214:936 215:37 216:2605 217:440 218:558 219:18 220:35 221:461 222:24 223:1137 End of report