IPv4 R&E Routing Table Report 20:30 GMT Mon 08 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: 69291 Prefixes after maximum aggregation (per Origin AS): 33568 Deaggregation factor: 2.06 Unique aggregates announced (without unneeded subnets): 45902 Number of IPv4 prefixes with a valid ROA: 38281 Number of IPv4 prefixes with an invalid ROA: 41 Number of IPv4 prefixes with no ROA: 30969 Total ASes present in the Internet Routing Table: 8414 Prefixes per ASN: 8.24 Origin-only ASes present in the Internet Routing Table: 6996 Origin ASes announcing only one prefix: 3784 Transit ASes present in the Internet Routing Table: 1418 Transit-only ASes present in the Internet Routing Table: 419 Paths with bogon ASNs present in the IPv4 Routing Table: 1 Average AS path length visible in the Internet Routing Table: 5.7 Max AS path length visible: 53 Max AS path prepend of ASN (212940) 45 Prefixes from unregistered ASNs in the Routing Table: 71 Number of instances of unregistered ASNs: 71 Number of 32-bit ASNs allocated by the RIRs: 47359 Number of 32-bit ASNs visible in the Routing Table: 3594 Prefixes from 32-bit ASNs in the Routing Table: 10449 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: 8 Number of addresses announced to Internet: 322355456 Equivalent to 19 /8s, 54 /16s and 193 /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: 28127 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 10991 Total APNIC prefixes after maximum aggregation: 5223 APNIC Deaggregation factor: 2.10 Prefixes being announced from the APNIC address blocks: 11161 Unique aggregates announced from the APNIC address blocks: 7229 APNIC Region origin ASes present in the Internet Routing Table: 925 APNIC Prefixes per ASN: 12.07 APNIC Region origin ASes announcing only one prefix: 334 APNIC Region transit ASes present in the Internet Routing Table: 120 Average APNIC Region AS path length visible: 5.6 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 377 Number of APNIC addresses announced to Internet: 53201664 Equivalent to 3 /8s, 43 /16s and 203 /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: 19189 Total ARIN prefixes after maximum aggregation: 9656 ARIN Deaggregation factor: 1.99 Prefixes being announced from the ARIN address blocks: 18467 Unique aggregates announced from the ARIN address blocks: 14450 ARIN Region origin ASes present in the Internet Routing Table: 1319 ARIN Prefixes per ASN: 14.00 ARIN Region origin ASes announcing only one prefix: 790 ARIN Region transit ASes present in the Internet Routing Table: 147 Average ARIN Region AS path length visible: 4.6 Max ARIN Region AS path length visible: 42 Number of ARIN region 32-bit ASNs visible in the Routing Table: 330 Number of ARIN addresses announced to Internet: 142260224 Equivalent to 8 /8s, 122 /16s and 184 /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: 27064 Total RIPE prefixes after maximum aggregation: 14566 RIPE Deaggregation factor: 1.86 Prefixes being announced from the RIPE address blocks: 27865 Unique aggregates announced from the RIPE address blocks: 18491 RIPE Region origin ASes present in the Internet Routing Table: 3759 RIPE Prefixes per ASN: 7.41 RIPE Region origin ASes announcing only one prefix: 1809 RIPE Region transit ASes present in the Internet Routing Table: 583 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 50 Number of RIPE region 32-bit ASNs visible in the Routing Table: 1232 Number of RIPE addresses announced to Internet: 107574784 Equivalent to 6 /8s, 105 /16s and 118 /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: 10706 Total LACNIC prefixes after maximum aggregation: 3855 LACNIC Deaggregation factor: 2.78 Prefixes being announced from the LACNIC address blocks: 10365 Unique aggregates announced from the LACNIC address blocks: 5246 LACNIC Region origin ASes present in the Internet Routing Table: 1915 LACNIC Prefixes per ASN: 5.41 LACNIC Region origin ASes announcing only one prefix: 823 LACNIC Region transit ASes present in the Internet Routing Table: 453 Average LACNIC Region AS path length visible: 7.2 Max LACNIC Region AS path length visible: 31 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 1626 Number of LACNIC addresses announced to Internet: 16512768 Equivalent to 0 /8s, 251 /16s and 247 /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: 1270 Total AfriNIC prefixes after maximum aggregation: 217 AfriNIC Deaggregation factor: 5.85 Prefixes being announced from the AfriNIC address blocks: 1425 Unique aggregates announced from the AfriNIC address blocks: 478 AfriNIC Region origin ASes present in the Internet Routing Table: 57 AfriNIC Prefixes per ASN: 25.00 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: 6.6 Max AfriNIC Region AS path length visible: 12 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 29 Number of AfriNIC addresses announced to Internet: 2796032 Equivalent to 0 /8s, 42 /16s and 170 /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 1955 6030 939 KIXS-AS-KR Korea Telecom, KR 7497 452 180 23 CSTNET-AS-AP Computer Network Information 24203 279 29 73 NAPXLNET-AS-ID PT XL Axiata, ID 23584 276 21 66 HYROADPUSAN-AS-KR PUSAN CABLE TV SYSTEM C 9319 201 23 71 HCNCHUNGJU-AS-KR HCN CHUNGBUK CABLE TV SY 38701 199 13 84 PIRANHA-AS-KR Piranha Systems, KR 4538 182 4192 72 ERX-CERNET-BKB China Education and Resear 55824 151 19 22 NKN-CORE-NW NKN Core Network, IN 9286 132 51 69 KINXIDC-AS-KR KINX, KR 7562 128 41 75 HCNSEOCHO-AS-KR HCN Dongjak, KR 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 2485 342 653 MEDIACOM-ENTERPRISE-BUSINESS, US 16509 2407 3801 1422 AMAZON-02, US 20115 2235 3092 531 CHARTER-20115, US 11492 1905 132 1051 CABLEONE, US 714 1194 4391 6 APPLE-ENGINEERING, US 8075 816 16025 681 MICROSOFT-CORP-MSN-AS-BLOCK, US 10796 635 1879 297 TWC-10796-MIDWEST, US 12083 553 192 88 WOW-INTERNET, US 2152 450 50 278 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 2983 2201 946 ROSTELECOM-AS PJSC Rostelecom. Technical 49505 934 101 397 SELECTEL, RU 9123 669 42 322 TIMEWEB-AS, RU 21299 428 77 62 KAR-TEL-AS Almaty, Republic of Kazakhstan 42772 374 63 104 A1-BY-AS, BY 50340 355 37 223 SELECTEL-MSK, RU 198610 344 18 64 BEGET-AS, RU 680 283 1883 250 DFN Verein zur Foerderung eines Deutschen 48503 240 15 58 TELE2-KZ Tele2 Kazakhstan, KZ 9198 237 115 65 KAZTELECOM-AS, 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 2111 639 221 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 205 177 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 576 82 3 KENET-AS, KE 2018 375 318 69 TENET-1, ZA 30999 74 25 32 EMTEL-AS-AP, MU 8094 47 48 18 PUKNET, ZA 37215 39 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37501 11 49 6 UOFS, ZA 327700 11 16 1 MoRENet, MZ 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 2983 2201 946 ROSTELECOM-AS PJSC Rostelecom. Technical 30036 2485 342 653 MEDIACOM-ENTERPRISE-BUSINESS, US 16509 2407 3801 1422 AMAZON-02, US 20115 2235 3092 531 CHARTER-20115, US 8151 2111 639 221 UNINET, MX 4766 1955 6030 939 KIXS-AS-KR Korea Telecom, KR 11492 1905 132 1051 CABLEONE, US 714 1194 4391 6 APPLE-ENGINEERING, US 49505 934 101 397 SELECTEL, RU 8075 816 16025 681 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 2111 1890 UNINET, MX 30036 2485 1832 MEDIACOM-ENTERPRISE-BUSINESS, US 20115 2235 1704 CHARTER-20115, US 714 1194 1188 APPLE-ENGINEERING, US 4766 1955 1016 KIXS-AS-KR Korea Telecom, KR 16509 2407 985 AMAZON-02, US 11492 1905 854 CABLEONE, US 36914 576 573 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 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 395888 UNALLOCATED 71.92.235.0/24 33588 BRESNAN-33588, US 395376 UNALLOCATED 75.141.56.0/24 23222 CHARTER-23222-RENO-C3, 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 /15:302 /16:1493 /17:717 /18:1595 /19:2193 /20:3474 /21:4196 /22:6895 /23:7080 /24:41124 /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 2485 MEDIACOM-ENTERPRISE-BUSINESS, US 12389 1903 2983 ROSTELECOM-AS PJSC Rostelecom. Technical Team, RU 11492 1313 1905 CABLEONE, US 8151 1160 2111 UNINET, MX 49505 650 934 SELECTEL, RU 36914 552 576 KENET-AS, KE 20115 546 2235 CHARTER-20115, US 9123 545 669 TIMEWEB-AS, RU 16509 517 2407 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) ---------------------------------------------- 1:77 2:72 3:122 5:460 8:38 12:46 13:99 14:245 15:60 16:59 17:326 18:78 20:28 23:282 24:572 27:140 31:447 34:3 35:60 37:277 38:178 39:107 40:2 41:243 42:41 43:50 44:5 45:1164 46:596 47:38 49:135 50:295 52:181 54:20 57:8 58:81 59:103 60:7 61:208 62:319 63:86 64:173 65:54 66:103 67:277 68:56 69:182 70:24 71:68 72:213 74:151 75:54 76:57 77:340 78:99 79:192 80:188 81:265 82:266 83:151 84:110 85:415 86:98 87:265 88:73 89:384 90:139 91:1129 92:382 93:387 94:451 95:511 96:237 97:143 98:45 99:45 101:256 102:52 103:696 104:148 105:8 106:3 107:64 108:123 109:426 110:15 111:56 112:220 113:32 114:159 115:37 116:64 117:120 118:72 119:47 120:29 121:283 122:76 123:8 124:83 125:58 128:78 129:24 130:64 131:122 132:60 134:47 135:16 136:47 137:69 138:172 139:27 140:244 141:63 142:64 143:72 144:52 145:57 146:220 147:122 148:241 149:94 150:109 151:113 152:109 153:24 154:127 155:46 156:39 157:50 158:51 159:285 160:232 161:62 162:52 163:54 164:47 165:51 166:18 167:67 168:228 169:20 170:282 171:9 172:72 173:972 174:90 175:125 176:568 177:387 178:584 179:145 180:175 181:66 182:70 183:37 184:78 185:1581 186:153 187:560 188:380 189:265 190:325 191:58 192:1139 193:833 194:692 195:621 196:172 197:362 198:473 199:250 200:737 201:477 202:582 203:805 204:178 205:174 206:183 207:268 208:132 209:183 210:788 211:583 212:701 213:389 216:219 217:402 218:151 219:4 220:414 221:61 222:66 223:144 End of report