IPv4 R&E Routing Table Report 23:00 GMT Tue 21 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: 1039507 Prefixes after maximum aggregation (per Origin AS): 399336 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 514854 Number of IPv4 prefixes with a valid ROA: 633296 Number of IPv4 prefixes with an invalid ROA: 451 Number of IPv4 prefixes with no ROA: 405760 Total ASes present in the Internet Routing Table: 78279 Prefixes per ASN: 13.28 Origin-only ASes present in the Internet Routing Table: 67085 Origin ASes announcing only one prefix: 27356 Transit ASes present in the Internet Routing Table: 11194 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: 1065 Number of instances of unregistered ASNs: 1097 Number of 32-bit ASNs allocated by the RIRs: 49405 Number of 32-bit ASNs visible in the Routing Table: 40392 Prefixes from 32-bit ASNs in the Routing Table: 228398 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: 490 Number of addresses announced to Internet: 3103251712 Equivalent to 184 /8s, 247 /16s and 221 /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: 339079 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 283042 Total APNIC prefixes after maximum aggregation: 82432 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269932 Unique aggregates announced from the APNIC address blocks: 107696 APNIC Region origin ASes present in the Internet Routing Table: 15142 APNIC Prefixes per ASN: 17.83 APNIC Region origin ASes announcing only one prefix: 4622 APNIC Region transit ASes present in the Internet Routing Table: 2050 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10734 Number of APNIC addresses announced to Internet: 748257792 Equivalent to 44 /8s, 153 /16s and 130 /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: 302608 Total ARIN prefixes after maximum aggregation: 135843 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 302101 Unique aggregates announced from the ARIN address blocks: 147174 ARIN Region origin ASes present in the Internet Routing Table: 19401 ARIN Prefixes per ASN: 15.57 ARIN Region origin ASes announcing only one prefix: 7119 ARIN Region transit ASes present in the Internet Routing Table: 1903 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: 5549 Number of ARIN addresses announced to Internet: 1348129024 Equivalent to 80 /8s, 90 /16s and 209 /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: 288054 Total RIPE prefixes after maximum aggregation: 142635 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 290683 Unique aggregates announced from the RIPE address blocks: 189793 RIPE Region origin ASes present in the Internet Routing Table: 29412 RIPE Prefixes per ASN: 9.88 RIPE Region origin ASes announcing only one prefix: 12185 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: 13301 Number of RIPE addresses announced to Internet: 733560832 Equivalent to 43 /8s, 185 /16s and 64 /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: 127672 Total LACNIC prefixes after maximum aggregation: 30799 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 122512 Unique aggregates announced from the LACNIC address blocks: 50336 LACNIC Region origin ASes present in the Internet Routing Table: 11359 LACNIC Prefixes per ASN: 10.79 LACNIC Region origin ASes announcing only one prefix: 2689 LACNIC Region transit ASes present in the Internet Routing Table: 2580 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: 9420 Number of LACNIC addresses announced to Internet: 169788928 Equivalent to 10 /8s, 30 /16s and 198 /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: 37066 Total AfriNIC prefixes after maximum aggregation: 6990 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 53789 Unique aggregates announced from the AfriNIC address blocks: 19469 AfriNIC Region origin ASes present in the Internet Routing Table: 2023 AfriNIC Prefixes per ASN: 26.59 AfriNIC Region origin ASes announcing only one prefix: 741 AfriNIC Region transit ASes present in the Internet Routing Table: 386 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: 1388 Number of AfriNIC addresses announced to Internet: 103233536 Equivalent to 6 /8s, 39 /16s and 56 /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 13845 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5906 827 490 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4924 551 328 BBIL-AP BHARTI Airtel Ltd., IN 18403 4591 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 4059 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 3366 1868 100 VNPT-AS-VN VNPT Corp, VN 24560 2962 838 597 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2910 183 491 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 14795 41292 5658 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 3869 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3725 1305 75 SHAW - Shaw Communications, CA 396982 3322 4859 497 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3266 8766 823 COGENT-174 - Cogent Communications, LLC, 749 3139 54728 2390 DNIC-AS-00749 - United States Department 36352 2719 222 901 AS-COLOCROSSING - HostPapa, US 30036 2661 365 348 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 7148 1711 149 UNI2-AS, ES 39891 4943 305 72 ALJAWWALSTC-AS, SA 9009 3828 354 2252 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 12838 3309 619 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2432 506 347 Mega Cable, S.A. de C.V., MX 11830 1937 369 65 Instituto Costarricense de Electricidad y 11664 1439 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 1248 371 22 INTEGRATEL PERU S.A.A., PE 26615 1072 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 1285 389 16 LINKdotNET-AS, EG 36935 1244 523 45 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 15399 554 57 58 WANANCHI-, KE 36914 553 82 3 KENET-AS, 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 14795 41292 5658 AMAZON-02 - Amazon.com, Inc., US 9808 13845 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12838 3309 619 UNINET, MX 12479 7148 1711 149 UNI2-AS, ES 7545 5906 827 490 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 305 72 ALJAWWALSTC-AS, SA 9498 4924 551 328 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 4591 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 13845 13724 CHINAMOBILE-CN China Mobile Communications Grou 8151 12838 12219 UNINET, MX 12479 7148 6999 UNI2-AS, ES 7545 5906 5416 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 4871 ALJAWWALSTC-AS, SA 9498 4924 4596 BBIL-AP BHARTI Airtel Ltd., IN 18403 4591 4565 FPT-AS-AP FPT Telecom Company, VN 22773 4778 4414 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4059 4031 VIETEL-AS-AP Viettel Group, VN 7155 3869 3784 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 215240 UNALLOCATED 2.26.176.0/24 16276 OVH, FR 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 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 /14:1185 /15:2097 /16:13579 /17:8242 /18:13224 /19:25345 /20:45597 /21:52230 /22:113237 /23:107152 /24:656576 /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 7025 12838 UNINET, MX 12479 6091 7148 UNI2-AS, ES 39891 3628 4943 ALJAWWALSTC-AS, SA 11492 3531 4670 CABLEONE - CABLE ONE, INC., US 6327 3506 3725 SHAW - Shaw Communications, CA 22773 3052 4778 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2823 3869 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2651 14795 AMAZON-02 - Amazon.com, Inc., US 30036 2313 2661 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) ---------------------------------------------- 1:2497 2:1845 3:1011 4:5 5:5182 6:198 7:6 8:1490 9:39 11:172 12:1187 13:706 14:2695 15:457 16:199 17:424 18:922 20:585 21:4 22:188 23:8162 24:2779 25:2 27:2818 28:1 29:19 31:3453 32:36 34:90 35:283 36:4695 37:4421 38:10144 39:1285 40:424 41:4548 42:2199 43:3125 44:448 45:19758 46:4867 47:411 48:127 49:2234 50:2014 51:660 52:1321 54:290 55:1115 56:11 57:323 58:2363 59:1384 60:1174 61:3158 62:3117 63:1716 64:6320 65:2134 66:6099 67:3261 68:1503 69:4219 70:1062 71:612 72:3206 74:3026 75:1501 76:588 77:2940 78:1984 79:1789 80:2342 81:2234 82:4092 83:1443 84:2130 85:3824 86:1090 87:2380 88:1332 89:4758 90:799 91:8426 92:2803 93:3013 94:4357 95:4714 96:1455 97:314 98:942 99:823 100:70 101:1632 102:4510 103:32976 104:5351 105:862 106:912 107:2890 108:1247 109:4249 110:2288 111:4120 112:3165 113:1962 114:2275 115:2288 116:2165 117:3512 118:2994 119:2083 120:2700 121:1540 122:2990 123:2268 124:1700 125:3015 126:126 128:1561 129:958 130:1627 131:2468 132:841 133:486 134:1677 135:607 136:1595 137:1349 138:3316 139:1620 140:1750 141:1723 142:2537 143:2092 144:1766 145:644 146:2201 147:2220 148:2792 149:3155 150:1379 151:2836 152:2317 153:1347 154:9856 155:2315 156:4481 157:2306 158:1558 159:2865 160:3837 161:1959 162:4039 163:2505 164:2041 165:2651 166:1276 167:2303 168:3998 169:859 170:5566 171:1130 172:4732 173:3474 174:882 175:1367 176:3865 177:4814 178:4346 179:2305 180:3205 181:4548 182:4021 183:2819 184:2025 185:21829 186:5766 187:4958 188:4552 189:4519 190:9834 191:1555 192:11447 193:9639 194:7885 195:5812 196:3356 197:3359 198:6118 199:6065 200:8085 201:6388 202:10666 203:10636 204:4766 205:3684 206:4501 207:3846 208:4376 209:5394 210:4709 211:2685 212:5090 213:4120 214:1044 215:47 216:7282 217:3563 218:1701 219:425 220:2198 221:1310 222:931 223:3431 End of report