IPv4 R&E Routing Table Report 20:15 GMT Wed 30 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: 280119 Prefixes after maximum aggregation (per Origin AS): 120531 Deaggregation factor: 2.32 Unique aggregates announced (without unneeded subnets): 142978 Number of IPv4 prefixes with a valid ROA: 130181 Number of IPv4 prefixes with an invalid ROA: 214 Number of IPv4 prefixes with no ROA: 149724 Total ASes present in the Internet Routing Table: 20783 Prefixes per ASN: 13.48 Origin-only ASes present in the Internet Routing Table: 17914 Origin ASes announcing only one prefix: 8005 Transit ASes present in the Internet Routing Table: 2869 Transit-only ASes present in the Internet Routing Table: 707 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: 344 Number of instances of unregistered ASNs: 376 Number of 32-bit ASNs allocated by the RIRs: 46974 Number of 32-bit ASNs visible in the Routing Table: 8238 Prefixes from 32-bit ASNs in the Routing Table: 33473 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: 102 Number of addresses announced to Internet: 1644875781 Equivalent to 98 /8s, 10 /16s and 208 /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: 88873 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 35316 Total APNIC prefixes after maximum aggregation: 7548 APNIC Deaggregation factor: 4.68 Prefixes being announced from the APNIC address blocks: 34283 Unique aggregates announced from the APNIC address blocks: 7845 APNIC Region origin ASes present in the Internet Routing Table: 1193 APNIC Prefixes per ASN: 28.74 APNIC Region origin ASes announcing only one prefix: 466 APNIC Region transit ASes present in the Internet Routing Table: 186 Average APNIC Region AS path length visible: 7.4 Max APNIC Region AS path length visible: 28 Number of APNIC region 32-bit ASNs visible in the Routing Table: 554 Number of APNIC addresses announced to Internet: 173298028 Equivalent to 10 /8s, 84 /16s and 81 /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: 126695 Total ARIN prefixes after maximum aggregation: 66722 ARIN Deaggregation factor: 1.90 Prefixes being announced from the ARIN address blocks: 125185 Unique aggregates announced from the ARIN address blocks: 68217 ARIN Region origin ASes present in the Internet Routing Table: 9357 ARIN Prefixes per ASN: 13.38 ARIN Region origin ASes announcing only one prefix: 3895 ARIN Region transit ASes present in the Internet Routing Table: 883 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: 2207 Number of ARIN addresses announced to Internet: 1028351241 Equivalent to 61 /8s, 75 /16s and 101 /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: 50485 Total RIPE prefixes after maximum aggregation: 27219 RIPE Deaggregation factor: 1.85 Prefixes being announced from the RIPE address blocks: 51911 Unique aggregates announced from the RIPE address blocks: 37919 RIPE Region origin ASes present in the Internet Routing Table: 4673 RIPE Prefixes per ASN: 11.11 RIPE Region origin ASes announcing only one prefix: 1953 RIPE Region transit ASes present in the Internet Routing Table: 702 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: 1919 Number of RIPE addresses announced to Internet: 287656784 Equivalent to 17 /8s, 37 /16s and 75 /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: 56047 Total LACNIC prefixes after maximum aggregation: 16422 LACNIC Deaggregation factor: 3.41 Prefixes being announced from the LACNIC address blocks: 54322 Unique aggregates announced from the LACNIC address blocks: 24434 LACNIC Region origin ASes present in the Internet Routing Table: 4425 LACNIC Prefixes per ASN: 12.28 LACNIC Region origin ASes announcing only one prefix: 1578 LACNIC Region transit ASes present in the Internet Routing Table: 883 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: 3403 Number of LACNIC addresses announced to Internet: 109209664 Equivalent to 6 /8s, 130 /16s and 104 /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: 11232 Total AfriNIC prefixes after maximum aggregation: 2362 AfriNIC Deaggregation factor: 4.76 Prefixes being announced from the AfriNIC address blocks: 14316 Unique aggregates announced from the AfriNIC address blocks: 4465 AfriNIC Region origin ASes present in the Internet Routing Table: 295 AfriNIC Prefixes per ASN: 48.53 AfriNIC Region origin ASes announcing only one prefix: 113 AfriNIC Region transit ASes present in the Internet Routing Table: 76 Average AfriNIC Region AS path length visible: 6.6 Max AfriNIC Region AS path length visible: 38 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 155 Number of AfriNIC addresses announced to Internet: 46238464 Equivalent to 2 /8s, 193 /16s and 139 /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 12155 8761 115 CHINAMOBILE-CN China Mobile Communication 56046 2828 811 189 CMNET-JIANGSU-AP China Mobile communicati 56047 1643 192 50 CMNET-HUNAN-AP China Mobile communication 56041 1642 714 78 CMNET-ZHEJIANG-AP China Mobile communicat 24547 866 177 50 CMNET-V4HEBEI-AS-AP Hebei Mobile Communic 24444 781 500 75 CMNET-V4SHANDONG-AS-AP Shandong Mobile Co 2907 613 2169 463 SINET-AS Research Organization of Informa 45102 539 889 139 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 13662 40975 5279 AMAZON-02, US 22773 3337 3013 163 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 4155 2891 219 1736 USDA-1, US 36352 2558 209 1142 AS-COLOCROSSING, US 367 2436 2963 1134 DNIC-ASBLK-00306-00371, US 6167 1942 4030 519 CELLCO-PART, US 11776 1897 259 215 ATLANTICBB-JOHNSTOWN, US 209 1649 4888 264 CENTURYLINK-US-LEGACY-QWEST, US 7018 1608 22829 1205 ATT-INTERNET4, 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 1187 93 966 AKAMAI-ASN1, NL 3257 1051 2083 815 GTT-BACKBONE GTT, US 34984 941 118 607 TELLCOM-AS, TR 3215 888 4818 292 France Telecom - Orange, FR 8452 829 1841 16 TE-AS TE-AS, EG 25019 800 1301 126 SAUDINETSTC-AS, SA 212238 658 46 582 CDNEXT, GB 8376 571 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 7239 2013 889 UNINET, MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 10620 1689 242 1217 Telmex Colombia S.A., CO 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1188 371 22 Telefonica del Peru S.A.A., PE 26615 1015 2487 55 TIM SA, BR 18881 885 1127 31 TELEFONICA BRASIL S.A, BR 11172 727 140 70 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 1418 572 23 RAYA-AS, EG 29571 1155 99 104 ORANGE-COTE-IVOIRE, CI 24863 1051 388 19 LINKdotNET-AS, EG 37069 957 1112 11 MOBINIL, EG 36914 574 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 36935 560 518 29 Vodafone-, EG 36992 482 1055 215 ETISALAT-MISR, EG 36903 456 204 330 MT-MPLS, MA 2018 374 318 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 13662 40975 5279 AMAZON-02, US 9808 12155 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 7239 2013 889 UNINET, MX 22773 3337 3013 163 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 4155 2891 219 1736 USDA-1, US 56046 2828 811 189 CMNET-JIANGSU-AP China Mobile communicati 36352 2558 209 1142 AS-COLOCROSSING, US 367 2436 2963 1134 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 12155 12040 CHINAMOBILE-CN China Mobile Communications Grou 8151 7239 6350 UNINET, MX 22773 3337 3174 ASN-CXA-ALL-CCI-22773-RDC, US 56046 2828 2639 CMNET-JIANGSU-AP China Mobile communications co 11830 1987 1923 Instituto Costarricense de Electricidad y Telec 39891 1936 1886 ALJAWWALSTC-AS, SA 11776 1897 1682 ATLANTICBB-JOHNSTOWN, US 56047 1643 1593 CMNET-HUNAN-AP China Mobile communications corp 56041 1642 1564 CMNET-ZHEJIANG-AP China Mobile communications c 6167 1942 1423 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 /14:591 /15:1120 /16:7763 /17:3492 /18:4275 /19:7811 /20:13356 /21:16032 /22:28786 /23:29297 /24:166860 /25:67 /26:85 /27:52 /28:18 /29:14 /30:12 /31:1 /32:5 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 3767 7239 UNINET, MX 22773 2492 3337 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2355 13662 AMAZON-02, US 11830 1691 1987 Instituto Costarricense de Electricidad y Telecom., CR 39891 1081 1936 ALJAWWALSTC-AS, SA 19901 1028 1356 BRSPD-PUBLIC, US 36352 1017 2558 AS-COLOCROSSING, US 10620 995 1689 Telmex Colombia S.A., CO 209 962 1649 CENTURYLINK-US-LEGACY-QWEST, US 11776 878 1897 ATLANTICBB-JOHNSTOWN, US Complete listing at https://bgp.nsrc.org/REN/KREONet2/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:28 2:447 3:844 4:5 5:807 6:145 7:5 8:654 11:171 12:957 13:399 14:112 15:309 16:247 17:3 18:891 20:190 21:4 22:188 23:2670 24:683 27:26 29:19 31:464 32:18 33:1 34:10 35:174 36:2836 37:755 38:2635 39:590 40:85 41:1094 42:21 43:234 44:32 45:4203 46:1001 47:111 49:25 50:479 51:385 52:1383 54:319 55:1063 56:11 57:23 58:17 59:39 60:31 61:58 62:519 63:783 64:1934 65:1115 66:1622 67:1095 68:375 69:1263 70:457 71:190 72:692 74:975 75:320 76:261 77:474 78:359 79:243 80:310 81:370 82:752 83:236 84:338 85:483 86:250 87:216 88:304 89:654 90:108 91:992 92:697 93:471 94:1027 95:628 96:275 97:53 98:501 99:190 100:40 101:27 102:385 103:1293 104:1712 105:186 106:40 107:1552 108:522 109:439 110:44 111:2039 112:744 113:39 114:54 115:18 116:56 117:1162 118:76 119:85 120:1471 121:50 122:60 123:137 124:64 125:25 126:1 128:535 129:400 130:673 131:1024 132:569 133:212 134:475 135:127 136:681 137:528 138:1026 139:443 140:763 141:368 142:1050 143:839 144:432 145:155 146:681 147:511 148:1021 149:734 150:211 151:819 152:625 153:131 154:1199 155:921 156:961 157:413 158:578 159:708 160:849 161:691 162:1039 163:444 164:736 165:635 166:823 167:695 168:1553 169:165 170:1742 171:102 172:1339 173:822 174:360 175:86 176:808 177:1072 178:616 179:857 180:42 181:2261 182:30 183:1104 184:463 185:3390 186:2846 187:1507 188:825 189:1971 190:5980 191:549 192:5295 193:1835 194:1196 195:956 196:727 197:1184 198:2769 199:5113 200:4631 201:3790 202:989 203:702 204:2295 205:1820 206:1594 207:1635 208:1527 209:1982 210:358 211:467 212:934 213:787 214:941 215:37 216:2598 217:456 218:563 219:18 220:32 221:469 222:24 223:1167 End of report