IPv4 R&E Routing Table Report 20:30 GMT Sun 05 Oct, 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: 72808 Prefixes after maximum aggregation (per Origin AS): 34786 Deaggregation factor: 2.09 Unique aggregates announced (without unneeded subnets): 47798 Number of IPv4 prefixes with a valid ROA: 40609 Number of IPv4 prefixes with an invalid ROA: 37 Number of IPv4 prefixes with no ROA: 32162 Total ASes present in the Internet Routing Table: 8822 Prefixes per ASN: 8.25 Origin-only ASes present in the Internet Routing Table: 7308 Origin ASes announcing only one prefix: 3909 Transit ASes present in the Internet Routing Table: 1514 Transit-only ASes present in the Internet Routing Table: 420 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 ( 37447) 39 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: 47653 Number of 32-bit ASNs visible in the Routing Table: 3979 Prefixes from 32-bit ASNs in the Routing Table: 12130 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: 323274752 Equivalent to 19 /8s, 68 /16s and 200 /24s Percentage of available address space announced: 8.7 Percentage of allocated address space announced: 8.7 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: 29175 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 11612 Total APNIC prefixes after maximum aggregation: 5405 APNIC Deaggregation factor: 2.15 Prefixes being announced from the APNIC address blocks: 11774 Unique aggregates announced from the APNIC address blocks: 7706 APNIC Region origin ASes present in the Internet Routing Table: 903 APNIC Prefixes per ASN: 13.04 APNIC Region origin ASes announcing only one prefix: 321 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: 360 Number of APNIC addresses announced to Internet: 54201600 Equivalent to 3 /8s, 59 /16s and 13 /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: 19414 Total ARIN prefixes after maximum aggregation: 9824 ARIN Deaggregation factor: 1.98 Prefixes being announced from the ARIN address blocks: 18656 Unique aggregates announced from the ARIN address blocks: 14609 ARIN Region origin ASes present in the Internet Routing Table: 1332 ARIN Prefixes per ASN: 14.01 ARIN Region origin ASes announcing only one prefix: 800 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: 36 Number of ARIN region 32-bit ASNs visible in the Routing Table: 326 Number of ARIN addresses announced to Internet: 142891776 Equivalent to 8 /8s, 132 /16s and 91 /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: 27836 Total RIPE prefixes after maximum aggregation: 14680 RIPE Deaggregation factor: 1.90 Prefixes being announced from the RIPE address blocks: 28638 Unique aggregates announced from the RIPE address blocks: 19100 RIPE Region origin ASes present in the Internet Routing Table: 3680 RIPE Prefixes per ASN: 7.78 RIPE Region origin ASes announcing only one prefix: 1777 RIPE Region transit ASes present in the Internet Routing Table: 578 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: 1224 Number of RIPE addresses announced to Internet: 104929792 Equivalent to 6 /8s, 65 /16s and 26 /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: 13080 Total LACNIC prefixes after maximum aggregation: 4622 LACNIC Deaggregation factor: 2.83 Prefixes being announced from the LACNIC address blocks: 12884 Unique aggregates announced from the LACNIC address blocks: 6042 LACNIC Region origin ASes present in the Internet Routing Table: 2402 LACNIC Prefixes per ASN: 5.36 LACNIC Region origin ASes announcing only one prefix: 979 LACNIC Region transit ASes present in the Internet Routing Table: 541 Average LACNIC Region AS path length visible: 7.3 Max LACNIC Region AS path length visible: 35 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 2038 Number of LACNIC addresses announced to Internet: 18324480 Equivalent to 1 /8s, 23 /16s and 156 /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: 781 Total AfriNIC prefixes after maximum aggregation: 198 AfriNIC Deaggregation factor: 3.94 Prefixes being announced from the AfriNIC address blocks: 847 Unique aggregates announced from the AfriNIC address blocks: 332 AfriNIC Region origin ASes present in the Internet Routing Table: 61 AfriNIC Prefixes per ASN: 13.89 AfriNIC Region origin ASes announcing only one prefix: 32 AfriNIC Region transit ASes present in the Internet Routing Table: 27 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 43 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 31 Number of AfriNIC addresses announced to Internet: 2916864 Equivalent to 0 /8s, 44 /16s and 130 /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 1960 6031 947 KIXS-AS-KR Korea Telecom, KR 9381 453 62 179 HKBNES-AS-AP HKBN Enterprise Solutions HK 7497 451 180 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 200 13 82 PIRANHA-AS-KR Piranha Systems, KR 4538 184 4192 72 ERX-CERNET-BKB China Education and Resear 38623 172 20 8 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 2478 342 683 MEDIACOM-ENTERPRISE-BUSINESS, US 16509 2419 3816 1431 AMAZON-02, US 20115 2230 3077 542 CHARTER-20115, US 11492 1917 133 1055 CABLEONE, US 714 1197 4391 6 APPLE-ENGINEERING, US 8075 834 16027 692 MICROSOFT-CORP-MSN-AS-BLOCK, US 10796 635 1879 297 TWC-10796-MIDWEST, US 12083 555 192 88 WOW-INTERNET, US 2152 500 54 289 CENIC-2152, US 33363 379 1415 213 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 2989 2202 946 ROSTELECOM-AS PJSC Rostelecom. Technical 49505 931 101 396 SELECTEL, RU 9123 683 43 329 TIMEWEB-AS, RU 197695 403 25 108 AS-REG, RU 21299 375 77 56 KAR-TEL-AS Almaty, Republic of Kazakhstan 42772 374 63 104 A1-BY-AS, BY 50340 360 38 228 SELECTEL-MSK, RU 198610 347 18 65 BEGET-AS, RU 680 283 1883 250 DFN Verein zur Foerderung eines Deutschen 48503 240 15 61 TELE2-KZ Tele2 Kazakhstan, KZ 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 2459 708 249 UNINET, MX 8167 335 1059 88 V tal, BR 7738 278 875 86 V tal, BR 28201 219 16 28 Companhia Itabirana Telecomunicacoes Ltda 1916 205 178 42 Rede Nacional de Ensino e Pesquisa, BR 28391 159 10 71 Universidad Juarez Autonoma de Tabasco, M 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 11014 76 10 26 CPS, AR 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 2018 376 318 69 TENET-1, ZA 30999 99 68 5 EMTEL-AS-AP, MU 8094 47 48 18 PUKNET, ZA 36914 47 82 3 KENET-AS, KE 37215 42 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37294 12 1 8 TNM, MW 327700 12 16 1 MoRENet, MZ 37501 11 49 6 UOFS, ZA 37654 10 1 6 RwEdNet-AS, RW 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 2989 2202 946 ROSTELECOM-AS PJSC Rostelecom. Technical 30036 2478 342 683 MEDIACOM-ENTERPRISE-BUSINESS, US 8151 2459 708 249 UNINET, MX 16509 2419 3816 1431 AMAZON-02, US 20115 2230 3077 542 CHARTER-20115, US 4766 1960 6031 947 KIXS-AS-KR Korea Telecom, KR 11492 1917 133 1055 CABLEONE, US 714 1197 4391 6 APPLE-ENGINEERING, US 49505 931 101 396 SELECTEL, RU 8075 834 16027 692 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 2459 2210 UNINET, MX 30036 2478 1795 MEDIACOM-ENTERPRISE-BUSINESS, US 20115 2230 1688 CHARTER-20115, US 714 1197 1191 APPLE-ENGINEERING, US 4766 1960 1013 KIXS-AS-KR Korea Telecom, KR 16509 2419 988 AMAZON-02, US 11492 1917 862 CABLEONE, US 49505 931 535 SELECTEL, RU 12083 555 467 WOW-INTERNET, US 7497 451 428 CSTNET-AS-AP Computer Network Information Cente 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 /12:39 /13:58 /14:112 /15:299 /16:1462 /17:719 /18:1591 /19:2279 /20:3651 /21:4548 /22:7760 /23:7989 /24:42288 /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 2162 2478 MEDIACOM-ENTERPRISE-BUSINESS, US 12389 1907 2989 ROSTELECOM-AS PJSC Rostelecom. Technical Team, RU 8151 1362 2459 UNINET, MX 11492 1324 1917 CABLEONE, US 49505 647 931 SELECTEL, RU 9123 559 683 TIMEWEB-AS, RU 20115 546 2230 CHARTER-20115, US 16509 514 2419 AMAZON-02, US 12083 432 555 WOW-INTERNET, US 21299 307 375 KAR-TEL-AS Almaty, Republic of Kazakhstan, KZ Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:79 2:79 3:123 5:468 8:42 12:44 13:99 14:246 15:60 16:60 17:326 18:80 20:28 23:274 24:571 27:137 31:482 34:3 35:60 36:28 37:308 38:188 39:107 40:3 41:88 42:43 43:45 44:3 45:1289 46:650 47:44 49:137 50:289 52:179 54:20 57:8 58:100 59:103 60:7 61:208 62:308 63:89 64:174 65:54 66:111 67:274 68:58 69:190 70:23 71:68 72:216 74:150 75:53 76:59 77:327 78:108 79:229 80:203 81:251 82:282 83:158 84:105 85:384 86:99 87:290 88:73 89:433 90:131 91:1213 92:379 93:395 94:470 95:534 96:238 97:143 98:45 99:47 101:263 102:58 103:644 104:150 105:10 106:3 107:64 108:123 109:473 110:16 111:49 112:223 113:32 114:159 115:35 116:66 117:119 118:80 119:48 120:11 121:284 122:75 123:8 124:87 125:56 128:80 129:18 130:61 131:169 132:55 134:60 135:15 136:47 137:68 138:199 139:28 140:237 141:66 142:66 143:90 144:51 145:58 146:235 147:129 148:244 149:83 150:110 151:136 152:115 153:24 154:95 155:49 156:36 157:48 158:57 159:287 160:237 161:63 162:51 163:48 164:62 165:50 166:18 167:79 168:247 169:22 170:320 171:9 172:74 173:972 174:91 175:112 176:595 177:506 178:600 179:174 180:156 181:115 182:48 183:37 184:79 185:1673 186:229 187:664 188:385 189:304 190:323 191:61 192:1093 193:824 194:784 195:647 196:163 197:5 198:480 199:250 200:748 201:544 202:716 203:783 204:180 205:175 206:187 207:289 208:138 209:189 210:869 211:580 212:670 213:395 216:232 217:423 218:148 219:4 220:475 221:61 222:65 223:143 End of report