IPv4 R&E Routing Table Report 23:00 GMT Mon 20 Apr, 2026 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1039382 Prefixes after maximum aggregation (per Origin AS): 399261 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 514741 Number of IPv4 prefixes with a valid ROA: 633046 Number of IPv4 prefixes with an invalid ROA: 430 Number of IPv4 prefixes with no ROA: 405906 Total ASes present in the Internet Routing Table: 78265 Prefixes per ASN: 13.28 Origin-only ASes present in the Internet Routing Table: 67080 Origin ASes announcing only one prefix: 27361 Transit ASes present in the Internet Routing Table: 11185 Transit-only ASes present in the Internet Routing Table: 591 Paths with bogon ASNs present in the IPv4 Routing Table: 39 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 216 Max AS path prepend of ASN (205624) 211 Prefixes from unregistered ASNs in the Routing Table: 1069 Number of instances of unregistered ASNs: 1101 Number of 32-bit ASNs allocated by the RIRs: 49402 Number of 32-bit ASNs visible in the Routing Table: 40375 Prefixes from 32-bit ASNs in the Routing Table: 228363 Number of bogon 32-bit ASNs visible in the Routing Table: 82 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 492 Number of addresses announced to Internet: 3103729408 Equivalent to 184 /8s, 255 /16s and 39 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 339019 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282981 Total APNIC prefixes after maximum aggregation: 82374 APNIC Deaggregation factor: 3.44 Prefixes being announced from the APNIC address blocks: 269954 Unique aggregates announced from the APNIC address blocks: 107711 APNIC Region origin ASes present in the Internet Routing Table: 15139 APNIC Prefixes per ASN: 17.83 APNIC Region origin ASes announcing only one prefix: 4626 APNIC Region transit ASes present in the Internet Routing Table: 2047 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 52 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10731 Number of APNIC addresses announced to Internet: 748985600 Equivalent to 44 /8s, 164 /16s and 157 /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: 302527 Total ARIN prefixes after maximum aggregation: 135802 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 302039 Unique aggregates announced from the ARIN address blocks: 147132 ARIN Region origin ASes present in the Internet Routing Table: 19402 ARIN Prefixes per ASN: 15.57 ARIN Region origin ASes announcing only one prefix: 7127 ARIN Region transit ASes present in the Internet Routing Table: 1904 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 216 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5552 Number of ARIN addresses announced to Internet: 1347962624 Equivalent to 80 /8s, 88 /16s and 71 /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, 393216-404380 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: 288059 Total RIPE prefixes after maximum aggregation: 142662 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 290613 Unique aggregates announced from the RIPE address blocks: 189713 RIPE Region origin ASes present in the Internet Routing Table: 29399 RIPE Prefixes per ASN: 9.89 RIPE Region origin ASes announcing only one prefix: 12181 RIPE Region transit ASes present in the Internet Routing Table: 4075 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13280 Number of RIPE addresses announced to Internet: 733466624 Equivalent to 43 /8s, 183 /16s and 208 /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: 127670 Total LACNIC prefixes after maximum aggregation: 30793 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 122492 Unique aggregates announced from the LACNIC address blocks: 50331 LACNIC Region origin ASes present in the Internet Routing Table: 11363 LACNIC Prefixes per ASN: 10.78 LACNIC Region origin ASes announcing only one prefix: 2690 LACNIC Region transit ASes present in the Internet Routing Table: 2576 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9425 Number of LACNIC addresses announced to Internet: 169781760 Equivalent to 10 /8s, 30 /16s and 170 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + 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: 37076 Total AfriNIC prefixes after maximum aggregation: 6995 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 53792 Unique aggregates announced from the AfriNIC address blocks: 19468 AfriNIC Region origin ASes present in the Internet Routing Table: 2022 AfriNIC Prefixes per ASN: 26.60 AfriNIC Region origin ASes announcing only one prefix: 737 AfriNIC Region transit ASes present in the Internet Routing Table: 383 Average AfriNIC Region AS path length visible: 5.2 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1387 Number of AfriNIC addresses announced to Internet: 103251200 Equivalent to 6 /8s, 39 /16s and 125 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & 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 13843 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5906 827 490 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4923 551 332 BBIL-AP BHARTI Airtel Ltd., IN 18403 4541 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 4056 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3684 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3490 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3362 1868 100 VNPT-AS-VN VNPT Corp, VN 24560 2984 844 558 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2899 182 494 LCS-AS-AP LARUS Limited, HK Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14779 41293 5662 AMAZON-02 - Amazon.com, Inc., US 22773 4778 3100 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4670 310 1039 CABLEONE - CABLE ONE, INC., US 7155 3870 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3724 1305 76 SHAW - Shaw Communications, CA 174 3326 8766 825 COGENT-174 - Cogent Communications, LLC, 396982 3324 4860 499 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3141 54728 2392 DNIC-AS-00749 - United States Department 36352 2722 223 901 AS-COLOCROSSING - HostPapa, US 30036 2662 365 351 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom C Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7172 1711 149 UNI2-AS, ES 39891 4943 305 72 ALJAWWALSTC-AS, SA 9009 3830 354 2251 M247, RO 20940 3821 3389 110 AKAMAI-ASN1, NL 12389 3145 2320 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2748 200 2027 CDNEXT, GB 34984 2450 365 574 TELLCOM-AS, TR 8452 1726 1852 14 TE-AS TE-AS, EG 203020 1667 252 832 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12824 3309 617 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2434 506 346 Mega Cable, S.A. de C.V., MX 11830 1937 369 65 Instituto Costarricense de Electricidad y 11664 1437 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1373 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1246 371 22 INTEGRATEL PERU S.A.A., PE 26615 1069 2392 100 TIM SA, BR 22884 1063 71 361 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 2024 648 34 RAYA-AS, EG 36992 1859 1533 336 ETISALAT-MISR, EG 24863 1280 389 16 LINKdotNET-AS, EG 36935 1241 522 44 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1117 1100 11 MOBINIL, EG 29571 1071 78 19 ORANGE-COTE-IVOIRE, CI 20011 589 155 220 NTT-DATA-Inc, ZA 36914 556 82 3 KENET-AS, KE 15399 555 57 59 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14779 41293 5662 AMAZON-02 - Amazon.com, Inc., US 9808 13843 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12824 3309 617 UNINET, MX 12479 7172 1711 149 UNI2-AS, ES 7545 5906 827 490 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 305 72 ALJAWWALSTC-AS, SA 9498 4923 551 332 BBIL-AP BHARTI Airtel Ltd., IN 22773 4778 3100 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4670 310 1039 CABLEONE - CABLE ONE, INC., US 18403 4541 347 26 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13843 13722 CHINAMOBILE-CN China Mobile Communications Grou 8151 12824 12207 UNINET, MX 12479 7172 7023 UNI2-AS, ES 7545 5906 5416 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 4871 ALJAWWALSTC-AS, SA 9498 4923 4591 BBIL-AP BHARTI Airtel Ltd., IN 18403 4541 4515 FPT-AS-AP FPT Telecom Company, VN 22773 4778 4414 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4056 4028 VIETEL-AS-AP Viettel Group, VN 7155 3870 3785 VIASAT-SP-BACKBONE - ViaSat,Inc., US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887 - C 395729 UNALLOCATED 8.28.58.0/24 32787 PROLEXIC-TECHNOLOGIES-D 395729 UNALLOCATED 8.28.60.0/24 32787 PROLEXIC-TECHNOLOGIES-D 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, US Complete listing at https://bgp.nsrc.org/REN/Singapore/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 /8:16 /9:14 /10:39 /11:95 /12:297 /13:582 /14:1186 /15:2098 /16:13577 /17:8245 /18:13250 /19:25356 /20:45636 /21:52202 /22:113300 /23:107077 /24:656412 /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 8151 7014 12824 UNINET, MX 12479 6113 7172 UNI2-AS, ES 39891 3628 4943 ALJAWWALSTC-AS, SA 11492 3531 4670 CABLEONE - CABLE ONE, INC., US 6327 3505 3724 SHAW - Shaw Communications, CA 22773 3051 4778 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2824 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2648 14779 AMAZON-02 - Amazon.com, Inc., US 30036 2314 2662 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3429 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2488 2:1870 3:1011 4:5 5:5195 6:198 7:6 8:1487 9:39 11:172 12:1189 13:702 14:2689 15:459 16:199 17:424 18:922 20:585 21:4 22:188 23:8157 24:2775 25:2 27:2819 28:1 29:19 31:3461 32:36 34:90 35:283 36:4696 37:4421 38:10175 39:1285 40:418 41:4552 42:2173 43:3115 44:446 45:19778 46:4866 47:411 48:125 49:2234 50:2016 51:660 52:1320 54:290 55:1113 56:11 57:321 58:2361 59:1386 60:1174 61:3157 62:3120 63:1714 64:6326 65:2134 66:6075 67:3260 68:1502 69:4205 70:1058 71:612 72:3205 74:3027 75:1501 76:588 77:2936 78:1980 79:1791 80:2346 81:2231 82:4093 83:1443 84:2133 85:3823 86:1091 87:2362 88:1340 89:4744 90:801 91:8420 92:2815 93:3009 94:4360 95:4676 96:1454 97:314 98:939 99:820 100:70 101:1632 102:4512 103:32959 104:5350 105:862 106:912 107:2886 108:1250 109:4237 110:2288 111:4115 112:3164 113:1965 114:2275 115:2288 116:2168 117:3513 118:2994 119:2112 120:2700 121:1541 122:2989 123:2265 124:1700 125:3007 126:126 128:1584 129:954 130:1630 131:2462 132:841 133:486 134:1674 135:613 136:1591 137:1344 138:3314 139:1614 140:1747 141:1724 142:2537 143:2093 144:1766 145:643 146:2201 147:2224 148:2788 149:3148 150:1378 151:2837 152:2322 153:1347 154:9849 155:2315 156:4510 157:2299 158:1552 159:2864 160:3836 161:1959 162:4036 163:2504 164:2040 165:2650 166:1276 167:2304 168:4003 169:852 170:5559 171:1130 172:4684 173:3475 174:882 175:1367 176:3872 177:4827 178:4346 179:2308 180:3205 181:4550 182:4020 183:2827 184:2028 185:21816 186:5766 187:4954 188:4546 189:4518 190:9838 191:1551 192:11442 193:9627 194:7882 195:5811 196:3359 197:3363 198:6106 199:6059 200:8077 201:6384 202:10676 203:10631 204:4760 205:3684 206:4505 207:3836 208:4375 209:5397 210:4709 211:2684 212:5093 213:4122 214:1045 215:47 216:7289 217:3570 218:1700 219:425 220:2198 221:1308 222:930 223:3431 End of report