IPv4 R&E Routing Table Report 20:30 GMT Wed 24 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: 72276 Prefixes after maximum aggregation (per Origin AS): 34435 Deaggregation factor: 2.10 Unique aggregates announced (without unneeded subnets): 47132 Number of IPv4 prefixes with a valid ROA: 40168 Number of IPv4 prefixes with an invalid ROA: 36 Number of IPv4 prefixes with no ROA: 32072 Total ASes present in the Internet Routing Table: 8699 Prefixes per ASN: 8.31 Origin-only ASes present in the Internet Routing Table: 7208 Origin ASes announcing only one prefix: 3893 Transit ASes present in the Internet Routing Table: 1491 Transit-only ASes present in the Internet Routing Table: 417 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 ( 63293) 37 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: 47538 Number of 32-bit ASNs visible in the Routing Table: 3860 Prefixes from 32-bit ASNs in the Routing Table: 11490 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: 10 Number of addresses announced to Internet: 314065408 Equivalent to 18 /8s, 184 /16s and 66 /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: 29509 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 11651 Total APNIC prefixes after maximum aggregation: 5420 APNIC Deaggregation factor: 2.15 Prefixes being announced from the APNIC address blocks: 11785 Unique aggregates announced from the APNIC address blocks: 7718 APNIC Region origin ASes present in the Internet Routing Table: 903 APNIC Prefixes per ASN: 13.05 APNIC Region origin ASes announcing only one prefix: 319 APNIC Region transit ASes present in the Internet Routing Table: 118 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: 362 Number of APNIC addresses announced to Internet: 54202112 Equivalent to 3 /8s, 59 /16s and 15 /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: 19281 Total ARIN prefixes after maximum aggregation: 9744 ARIN Deaggregation factor: 1.98 Prefixes being announced from the ARIN address blocks: 18576 Unique aggregates announced from the ARIN address blocks: 14499 ARIN Region origin ASes present in the Internet Routing Table: 1329 ARIN Prefixes per ASN: 13.98 ARIN Region origin ASes announcing only one prefix: 791 ARIN Region transit ASes present in the Internet Routing Table: 149 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: 332 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: 27663 Total RIPE prefixes after maximum aggregation: 14510 RIPE Deaggregation factor: 1.91 Prefixes being announced from the RIPE address blocks: 28508 Unique aggregates announced from the RIPE address blocks: 18759 RIPE Region origin ASes present in the Internet Routing Table: 3720 RIPE Prefixes per ASN: 7.66 RIPE Region origin ASes announcing only one prefix: 1792 RIPE Region transit ASes present in the Internet Routing Table: 587 Average RIPE Region AS path length visible: 6.0 Max RIPE Region AS path length visible: 25 Number of RIPE region 32-bit ASNs visible in the Routing Table: 1231 Number of RIPE addresses announced to Internet: 95826176 Equivalent to 5 /8s, 182 /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 196608-216475 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: 12298 Total LACNIC prefixes after maximum aggregation: 4507 LACNIC Deaggregation factor: 2.73 Prefixes being announced from the LACNIC address blocks: 11965 Unique aggregates announced from the LACNIC address blocks: 5752 LACNIC Region origin ASes present in the Internet Routing Table: 2245 LACNIC Prefixes per ASN: 5.33 LACNIC Region origin ASes announcing only one prefix: 961 LACNIC Region transit ASes present in the Internet Routing Table: 514 Average LACNIC Region AS path length visible: 7.2 Max LACNIC Region AS path length visible: 25 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 1904 Number of LACNIC addresses announced to Internet: 18107904 Equivalent to 1 /8s, 20 /16s and 78 /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: 1298 Total AfriNIC prefixes after maximum aggregation: 192 AfriNIC Deaggregation factor: 6.76 Prefixes being announced from the AfriNIC address blocks: 1432 Unique aggregates announced from the AfriNIC address blocks: 394 AfriNIC Region origin ASes present in the Internet Routing Table: 60 AfriNIC Prefixes per ASN: 23.87 AfriNIC Region origin ASes announcing only one prefix: 30 AfriNIC Region transit ASes present in the Internet Routing Table: 28 Average AfriNIC Region AS path length visible: 6.8 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: 2970112 Equivalent to 0 /8s, 45 /16s and 82 /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 2482 342 663 MEDIACOM-ENTERPRISE-BUSINESS, US 16509 2403 3814 1420 AMAZON-02, US 20115 2235 3091 552 CHARTER-20115, US 11492 1914 133 1057 CABLEONE, US 714 1196 4391 6 APPLE-ENGINEERING, US 8075 821 16026 687 MICROSOFT-CORP-MSN-AS-BLOCK, US 10796 635 1879 297 TWC-10796-MIDWEST, US 12083 553 191 88 WOW-INTERNET, US 2152 468 51 283 CENIC-2152, US 33363 381 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 2985 2202 946 ROSTELECOM-AS PJSC Rostelecom. Technical 49505 934 101 397 SELECTEL, RU 9123 678 42 327 TIMEWEB-AS, RU 21299 428 77 62 KAR-TEL-AS Almaty, Republic of Kazakhstan 42772 374 63 104 A1-BY-AS, BY 50340 358 38 226 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 2240 656 245 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 574 82 3 KENET-AS, KE 2018 376 318 69 TENET-1, ZA 30999 98 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 13 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 2985 2202 946 ROSTELECOM-AS PJSC Rostelecom. Technical 30036 2482 342 663 MEDIACOM-ENTERPRISE-BUSINESS, US 16509 2403 3814 1420 AMAZON-02, US 8151 2240 656 245 UNINET, MX 20115 2235 3091 552 CHARTER-20115, US 4766 1967 6031 951 KIXS-AS-KR Korea Telecom, KR 11492 1914 133 1057 CABLEONE, US 714 1196 4391 6 APPLE-ENGINEERING, US 49505 934 101 397 SELECTEL, RU 8075 821 16026 687 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 2240 1995 UNINET, MX 30036 2482 1819 MEDIACOM-ENTERPRISE-BUSINESS, US 20115 2235 1683 CHARTER-20115, US 714 1196 1190 APPLE-ENGINEERING, US 4766 1967 1016 KIXS-AS-KR Korea Telecom, KR 16509 2403 983 AMAZON-02, US 11492 1914 857 CABLEONE, US 36914 574 571 KENET-AS, KE 49505 934 537 SELECTEL, RU 12083 553 465 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 /15:289 /16:1410 /17:719 /18:1607 /19:2269 /20:3615 /21:4418 /22:7598 /23:7672 /24:42462 /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 2165 2482 MEDIACOM-ENTERPRISE-BUSINESS, US 12389 1904 2985 ROSTELECOM-AS PJSC Rostelecom. Technical Team, RU 11492 1321 1914 CABLEONE, US 8151 1250 2240 UNINET, MX 49505 650 934 SELECTEL, RU 9123 554 678 TIMEWEB-AS, RU 36914 550 574 KENET-AS, KE 20115 546 2235 CHARTER-20115, US 16509 515 2403 AMAZON-02, US 12083 430 553 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 5:479 8:41 12:45 13:99 14:247 15:59 16:59 17:323 18:80 20:28 23:274 24:573 27:137 31:496 34:3 35:60 36:24 37:314 38:183 39:107 40:2 41:242 42:43 43:46 44:3 45:1238 46:625 47:43 49:137 50:290 52:180 54:20 57:8 58:101 59:103 60:7 61:209 62:316 63:87 64:171 65:54 66:110 67:277 68:56 69:183 70:23 71:68 72:213 74:150 75:54 76:59 77:335 78:102 79:235 80:193 81:269 82:288 83:154 84:113 85:396 86:101 87:302 88:73 89:414 90:131 91:1223 92:393 93:405 94:481 95:533 96:237 97:143 98:45 99:45 101:263 102:55 103:647 104:149 105:9 106:3 107:64 108:123 109:440 110:15 111:45 112:223 113:32 114:159 115:35 116:66 117:119 118:81 119:48 120:11 121:284 122:75 123:8 124:87 125:56 128:78 129:18 130:57 131:140 132:55 134:52 135:15 136:47 137:69 138:183 139:28 140:238 141:63 142:64 143:78 144:51 145:57 146:231 147:123 148:244 149:88 150:110 151:119 152:109 153:24 154:104 155:48 156:37 157:48 158:49 159:286 160:239 161:63 162:52 163:62 164:56 165:52 166:18 167:74 168:245 169:20 170:314 171:9 172:66 173:976 174:91 175:112 176:599 177:444 178:598 179:160 180:156 181:87 182:50 183:37 184:79 185:1668 186:230 187:587 188:396 189:301 190:354 191:59 192:1067 193:822 194:704 195:637 196:175 197:362 198:470 199:250 200:741 201:550 202:716 203:773 204:177 205:175 206:191 207:266 208:134 209:187 210:873 211:584 212:727 213:410 216:230 217:440 218:151 219:4 220:475 221:61 222:66 223:142 End of report