IPv4 R&E Routing Table Report 20:30 GMT Sun 21 Sep, 2025 IPv4 BGP Table (R&E) as seen at PREGINET. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/PREGINET/ Analysis Summary ---------------- BGP routing table entries examined: 72557 Prefixes after maximum aggregation (per Origin AS): 34439 Deaggregation factor: 2.11 Unique aggregates announced (without unneeded subnets): 47186 Number of IPv4 prefixes with a valid ROA: 40230 Number of IPv4 prefixes with an invalid ROA: 38 Number of IPv4 prefixes with no ROA: 32289 Total ASes present in the Internet Routing Table: 8682 Prefixes per ASN: 8.36 Origin-only ASes present in the Internet Routing Table: 7205 Origin ASes announcing only one prefix: 3883 Transit ASes present in the Internet Routing Table: 1477 Transit-only ASes present in the Internet Routing Table: 411 Paths with bogon ASNs present in the IPv4 Routing Table: 1 Average AS path length visible in the Internet Routing Table: 5.8 Max AS path length visible: 53 Max AS path prepend of ASN (212940) 45 Prefixes from unregistered ASNs in the Routing Table: 85 Number of instances of unregistered ASNs: 85 Number of 32-bit ASNs allocated by the RIRs: 47520 Number of 32-bit ASNs visible in the Routing Table: 3874 Prefixes from 32-bit ASNs in the Routing Table: 11629 Number of bogon 32-bit ASNs visible in the Routing Table: 2 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 9 Number of addresses announced to Internet: 314090496 Equivalent to 18 /8s, 184 /16s and 164 /24s Percentage of available address space announced: 8.5 Percentage of allocated address space announced: 8.5 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: 29579 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 11629 Total APNIC prefixes after maximum aggregation: 5405 APNIC Deaggregation factor: 2.15 Prefixes being announced from the APNIC address blocks: 11785 Unique aggregates announced from the APNIC address blocks: 7720 APNIC Region origin ASes present in the Internet Routing Table: 899 APNIC Prefixes per ASN: 13.11 APNIC Region origin ASes announcing only one prefix: 319 APNIC Region transit ASes present in the Internet Routing Table: 116 Average APNIC Region AS path length visible: 5.8 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 361 Number of APNIC addresses announced to Internet: 54010112 Equivalent to 3 /8s, 56 /16s and 33 /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: 19295 Total ARIN prefixes after maximum aggregation: 9741 ARIN Deaggregation factor: 1.98 Prefixes being announced from the ARIN address blocks: 18592 Unique aggregates announced from the ARIN address blocks: 14502 ARIN Region origin ASes present in the Internet Routing Table: 1323 ARIN Prefixes per ASN: 14.05 ARIN Region origin ASes announcing only one prefix: 787 ARIN Region transit ASes present in the Internet Routing Table: 147 Average ARIN Region AS path length visible: 4.7 Max ARIN Region AS path length visible: 42 Number of ARIN region 32-bit ASNs visible in the Routing Table: 329 Number of ARIN addresses announced to Internet: 142948608 Equivalent to 8 /8s, 133 /16s and 57 /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: 27598 Total RIPE prefixes after maximum aggregation: 14506 RIPE Deaggregation factor: 1.90 Prefixes being announced from the RIPE address blocks: 28429 Unique aggregates announced from the RIPE address blocks: 18733 RIPE Region origin ASes present in the Internet Routing Table: 3699 RIPE Prefixes per ASN: 7.69 RIPE Region origin ASes announcing only one prefix: 1779 RIPE Region transit ASes present in the Internet Routing Table: 581 Average RIPE Region AS path length visible: 6.0 Max RIPE Region AS path length visible: 50 Number of RIPE region 32-bit ASNs visible in the Routing Table: 1228 Number of RIPE addresses announced to Internet: 95944192 Equivalent to 5 /8s, 183 /16s and 254 /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: 12669 Total LACNIC prefixes after maximum aggregation: 4535 LACNIC Deaggregation factor: 2.79 Prefixes being announced from the LACNIC address blocks: 12329 Unique aggregates announced from the LACNIC address blocks: 5832 LACNIC Region origin ASes present in the Internet Routing Table: 2267 LACNIC Prefixes per ASN: 5.44 LACNIC Region origin ASes announcing only one prefix: 970 LACNIC Region transit ASes present in the Internet Routing Table: 516 Average LACNIC Region AS path length visible: 7.3 Max LACNIC Region AS path length visible: 31 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 1925 Number of LACNIC addresses announced to Internet: 18275584 Equivalent to 1 /8s, 22 /16s and 221 /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: 1281 Total AfriNIC prefixes after maximum aggregation: 190 AfriNIC Deaggregation factor: 6.74 Prefixes being announced from the AfriNIC address blocks: 1413 Unique aggregates announced from the AfriNIC address blocks: 390 AfriNIC Region origin ASes present in the Internet Routing Table: 58 AfriNIC Prefixes per ASN: 24.36 AfriNIC Region origin ASes announcing only one prefix: 28 AfriNIC Region transit ASes present in the Internet Routing Table: 26 Average AfriNIC Region AS path length visible: 6.9 Max AfriNIC Region AS path length visible: 12 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 31 Number of AfriNIC addresses announced to Internet: 2901760 Equivalent to 0 /8s, 44 /16s and 71 /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 4766 1967 6031 951 KIXS-AS-KR Korea Telecom, KR 9381 453 62 179 HKBNES-AS-AP HKBN Enterprise Solutions HK 7497 452 180 23 CSTNET-AS-AP Computer Network Information 10036 435 151 167 CNM-AS-KR DLIVE, KR 23584 276 21 66 HYROADPUSAN-AS-KR PUSAN CABLE TV SYSTEM C 24203 270 29 80 NAPXLNET-AS-ID PT XL Axiata, ID 9319 201 23 71 HCNCHUNGJU-AS-KR HCN CHUNGBUK CABLE TV SY 38701 201 13 83 PIRANHA-AS-KR Piranha Systems, KR 4538 184 4192 72 ERX-CERNET-BKB China Education and Resear 38623 172 20 11 VIETTELCAMBODIA-AS-AP ISPIXP IN CAMBODIA Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 30036 2484 341 665 MEDIACOM-ENTERPRISE-BUSINESS, US 16509 2404 3814 1422 AMAZON-02, US 20115 2235 3091 552 CHARTER-20115, US 11492 1909 133 1054 CABLEONE, US 714 1214 4391 6 APPLE-ENGINEERING, US 8075 824 16026 690 MICROSOFT-CORP-MSN-AS-BLOCK, US 10796 635 1879 297 TWC-10796-MIDWEST, US 12083 554 192 88 WOW-INTERNET, US 2152 468 51 283 CENIC-2152, US 33363 380 1416 215 BHN-33363, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12389 2984 2201 947 ROSTELECOM-AS PJSC Rostelecom. Technical 49505 933 101 397 SELECTEL, RU 9123 677 42 326 TIMEWEB-AS, RU 21299 428 77 62 KAR-TEL-AS Almaty, Republic of Kazakhstan 42772 374 63 104 A1-BY-AS, BY 50340 356 38 224 SELECTEL-MSK, RU 198610 345 18 64 BEGET-AS, RU 680 283 1883 250 DFN Verein zur Foerderung eines Deutschen 48503 239 15 61 TELE2-KZ Tele2 Kazakhstan, KZ 25106 224 61 15 MTSBY-AS, BY Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 2447 707 246 UNINET, MX 8167 348 1079 81 V tal, BR 7738 303 920 90 V tal, BR 28201 219 16 28 Companhia Itabirana Telecomunicacoes Ltda 1916 204 177 41 Rede Nacional de Ensino e Pesquisa, BR 28391 159 10 71 Universidad Juarez Autonoma de Tabasco, M 262287 141 24 123 Latitude.sh LTDA, BR 271640 129 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 11340 110 9 50 Red Universitaria Nacional, CL 19089 107 18 45 Scala Data Centers, BR Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 564 82 3 KENET-AS, KE 2018 375 318 69 TENET-1, ZA 30999 94 68 5 EMTEL-AS-AP, MU 8094 47 48 18 PUKNET, ZA 37215 39 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 327700 12 16 1 MoRENet, MZ 37501 11 49 6 UOFS, ZA 37654 10 1 6 RwEdNet-AS, RW 36982 8 33 8 UCT, ZA Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 12389 2984 2201 947 ROSTELECOM-AS PJSC Rostelecom. Technical 30036 2484 341 665 MEDIACOM-ENTERPRISE-BUSINESS, US 8151 2447 707 246 UNINET, MX 16509 2404 3814 1422 AMAZON-02, US 20115 2235 3091 552 CHARTER-20115, US 4766 1967 6031 951 KIXS-AS-KR Korea Telecom, KR 11492 1909 133 1054 CABLEONE, US 714 1214 4391 6 APPLE-ENGINEERING, US 49505 933 101 397 SELECTEL, RU 8075 824 16026 690 MICROSOFT-CORP-MSN-AS-BLOCK, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 2447 2201 UNINET, MX 30036 2484 1819 MEDIACOM-ENTERPRISE-BUSINESS, US 20115 2235 1683 CHARTER-20115, US 714 1214 1208 APPLE-ENGINEERING, US 4766 1967 1016 KIXS-AS-KR Korea Telecom, KR 16509 2404 982 AMAZON-02, US 11492 1909 855 CABLEONE, US 36914 564 561 KENET-AS, KE 49505 933 536 SELECTEL, RU 12083 554 466 WOW-INTERNET, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 46123 UNALLOCATED 24.73.234.0/24 33363 BHN-33363, US 53771 UNALLOCATED 24.172.253.0/24 11426 TWC-11426-CAROLINAS, US 53657 UNALLOCATED 24.213.247.0/24 11351 TWC-11351-NORTHEAST, US 11835 UNALLOCATED 45.4.236.0/22 14868 Ligga Telecomunicacoes 268652 UNALLOCATED 45.165.20.0/22 264493 UNASSIGNED 397492 UNALLOCATED 47.45.33.0/24 22677 CHARTER-22677-MO-IL-C3, 396324 UNALLOCATED 66.57.112.0/24 11426 TWC-11426-CAROLINAS, US 26345 UNALLOCATED 71.13.182.0/24 20115 CHARTER-20115, US 46123 UNALLOCATED 71.46.221.0/24 33363 BHN-33363, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/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/PREGINET/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 103.174.186.0/24 Origin: 138032 MHS-AS-AP MOS Hosting Services, BD 103.174.186.0/24 Transit: 9245 COMPASS-NZ-AP COMPASS, NZ 103.174.187.0/24 Origin: 138032 MHS-AS-AP MOS Hosting Services, BD 103.174.187.0/24 Transit: 9245 COMPASS-NZ-AP COMPASS, NZ 192.88.99.0/24 Origin: 6939 HURRICANE, US 192.88.99.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re 192.109.103.0/24 Origin: 63401 RESERVED, ZZ 192.109.103.0/24 Transit: 11427 TWC-11427-TEXAS, US 192.150.116.0/24 Origin: 20001 TWC-20001-PACWEST, US 192.150.116.0/24 Transit: 7843 TWC-7843-BB, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/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 /9:2 /10:2 /11:8 /12:37 /13:57 /14:110 /15:288 /16:1408 /17:718 /18:1604 /19:2290 /20:3630 /21:4493 /22:7644 /23:7728 /24:42537 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 30036 2167 2484 MEDIACOM-ENTERPRISE-BUSINESS, US 12389 1904 2984 ROSTELECOM-AS PJSC Rostelecom. Technical Team, RU 8151 1353 2447 UNINET, MX 11492 1317 1909 CABLEONE, US 49505 649 933 SELECTEL, RU 9123 553 677 TIMEWEB-AS, RU 20115 546 2235 CHARTER-20115, US 36914 540 564 KENET-AS, KE 16509 515 2404 AMAZON-02, US 12083 431 554 WOW-INTERNET, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:79 2:76 3:123 5:477 8:41 12:45 13:99 14:247 15:59 16:59 17:325 18:80 20:28 23:281 24:573 27:137 31:473 34:3 35:60 36:25 37:315 38:185 39:107 40:2 41:243 42:43 43:45 44:3 45:1247 46:626 47:43 49:137 50:291 52:179 54:20 57:8 58:102 59:103 60:7 61:209 62:309 63:87 64:176 65:54 66:109 67:277 68:56 69:180 70:23 71:68 72:213 74:149 75:54 76:59 77:358 78:102 79:234 80:193 81:269 82:283 83:154 84:107 85:425 86:101 87:293 88:73 89:408 90:131 91:1219 92:392 93:406 94:480 95:513 96:237 97:143 98:45 99:45 101:263 102:56 103:633 104:148 105:9 106:3 107:64 108:123 109:441 110:15 111:45 112:223 113:32 114:159 115:35 116:66 117:119 118:81 119:48 120:11 121:284 122:75 123:8 124:87 125:56 128:78 129:18 130:57 131:140 132:60 134:50 135:15 136:47 137:69 138:184 139:27 140:238 141:64 142:64 143:77 144:51 145:57 146:229 147:122 148:244 149:92 150:110 151:119 152:109 153:24 154:103 155:48 156:37 157:49 158:53 159:286 160:237 161:63 162:52 163:49 164:56 165:50 166:18 167:79 168:253 169:20 170:321 171:9 172:73 173:976 174:91 175:117 176:592 177:458 178:598 179:166 180:157 181:87 182:50 183:37 184:78 185:1660 186:233 187:667 188:397 189:315 190:350 191:60 192:1067 193:830 194:702 195:634 196:174 197:351 198:470 199:250 200:732 201:552 202:719 203:774 204:180 205:175 206:190 207:273 208:133 209:186 210:873 211:584 212:726 213:401 216:227 217:432 218:151 219:4 220:475 221:61 222:66 223:141 End of report