IPv4 R&E Routing Table Report 23:05 GMT Tue 18 Nov, 2025 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: 1011302 Prefixes after maximum aggregation (per Origin AS): 392013 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 501681 Number of IPv4 prefixes with a valid ROA: 587874 Number of IPv4 prefixes with an invalid ROA: 765 Number of IPv4 prefixes with no ROA: 422663 Total ASes present in the Internet Routing Table: 77492 Prefixes per ASN: 13.05 Origin-only ASes present in the Internet Routing Table: 66411 Origin ASes announcing only one prefix: 27087 Transit ASes present in the Internet Routing Table: 11081 Transit-only ASes present in the Internet Routing Table: 554 Paths with bogon ASNs present in the IPv4 Routing Table: 28 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 965 Number of instances of unregistered ASNs: 994 Number of 32-bit ASNs allocated by the RIRs: 48017 Number of 32-bit ASNs visible in the Routing Table: 39314 Prefixes from 32-bit ASNs in the Routing Table: 216278 Number of bogon 32-bit ASNs visible in the Routing Table: 76 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 406 Number of addresses announced to Internet: 3101945600 Equivalent to 184 /8s, 227 /16s and 239 /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: 331535 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271754 Total APNIC prefixes after maximum aggregation: 80181 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 261212 Unique aggregates announced from the APNIC address blocks: 106022 APNIC Region origin ASes present in the Internet Routing Table: 14853 APNIC Prefixes per ASN: 17.59 APNIC Region origin ASes announcing only one prefix: 4488 APNIC Region transit ASes present in the Internet Routing Table: 2011 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10432 Number of APNIC addresses announced to Internet: 748505344 Equivalent to 44 /8s, 157 /16s and 73 /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: 296626 Total ARIN prefixes after maximum aggregation: 133725 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296519 Unique aggregates announced from the ARIN address blocks: 145347 ARIN Region origin ASes present in the Internet Routing Table: 19356 ARIN Prefixes per ASN: 15.32 ARIN Region origin ASes announcing only one prefix: 7110 ARIN Region transit ASes present in the Internet Routing Table: 1916 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5410 Number of ARIN addresses announced to Internet: 1343772416 Equivalent to 80 /8s, 24 /16s and 87 /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: 281495 Total RIPE prefixes after maximum aggregation: 139856 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281928 Unique aggregates announced from the RIPE address blocks: 182870 RIPE Region origin ASes present in the Internet Routing Table: 29112 RIPE Prefixes per ASN: 9.68 RIPE Region origin ASes announcing only one prefix: 12095 RIPE Region transit ASes present in the Internet Routing Table: 4043 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 45 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12826 Number of RIPE addresses announced to Internet: 735563008 Equivalent to 43 /8s, 215 /16s and 205 /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: 124900 Total LACNIC prefixes after maximum aggregation: 30735 LACNIC Deaggregation factor: 4.06 Prefixes being announced from the LACNIC address blocks: 120956 Unique aggregates announced from the LACNIC address blocks: 49558 LACNIC Region origin ASes present in the Internet Routing Table: 11314 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2673 LACNIC Region transit ASes present in the Internet Routing Table: 2547 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9298 Number of LACNIC addresses announced to Internet: 170827264 Equivalent to 10 /8s, 46 /16s and 158 /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: 35562 Total AfriNIC prefixes after maximum aggregation: 6855 AfriNIC Deaggregation factor: 5.19 Prefixes being announced from the AfriNIC address blocks: 50281 Unique aggregates announced from the AfriNIC address blocks: 17529 AfriNIC Region origin ASes present in the Internet Routing Table: 1985 AfriNIC Prefixes per ASN: 25.33 AfriNIC Region origin ASes announcing only one prefix: 721 AfriNIC Region transit ASes present in the Internet Routing Table: 376 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1348 Number of AfriNIC addresses announced to Internet: 103122944 Equivalent to 6 /8s, 37 /16s and 136 /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 9808 13391 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6074 833 593 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4534 539 318 BBIL-AP BHARTI Airtel Ltd., IN 18403 4367 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3977 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3719 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3317 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2941 865 502 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2485 272 1919 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14162 37016 5380 AMAZON-02, US 11492 4789 317 804 CABLEONE, US 22773 4700 3111 366 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3297 4859 478 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2854 1220 2140 AKAMAI-AS, US 36352 2851 231 913 AS-COLOCROSSING, US 30036 2664 367 288 MEDIACOM-ENTERPRISE-BUSINESS, US 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 7305 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4021 381 2286 M247, RO 20940 3858 3394 124 AKAMAI-ASN1, NL 12389 3143 2317 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2490 176 1797 CDNEXT, GB 34984 2419 363 577 TELLCOM-AS, TR 8452 1697 1852 14 TE-AS TE-AS, EG 13188 1567 98 89 TRIOLAN, UA 203020 1486 169 856 HOSTROYALE, IN 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 12556 3317 579 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2506 511 346 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1264 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1017 2486 56 TIM SA, BR 18881 914 1127 31 TELEFONICA BRASIL S.A, BR 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 1985 630 32 RAYA-AS, EG 36992 1680 1509 397 ETISALAT-MISR, EG 24863 1265 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1086 520 31 Vodafone-, EG 37069 1086 1112 11 MOBINIL, EG 29571 1071 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 559 82 3 KENET-AS, KE 15399 552 57 56 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 14162 37016 5380 AMAZON-02, US 9808 13391 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12556 3317 579 UNINET, MX 12479 7305 1711 149 UNI2-AS, ES 7545 6074 833 593 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4789 317 804 CABLEONE, US 22773 4700 3111 366 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4534 539 318 BBIL-AP BHARTI Airtel Ltd., IN 18403 4367 347 24 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 13391 13274 CHINAMOBILE-CN China Mobile Communications Grou 8151 12556 11977 UNINET, MX 12479 7305 7156 UNI2-AS, ES 7545 6074 5481 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4367 4343 FPT-AS-AP FPT Telecom Company, VN 22773 4700 4334 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4534 4216 BBIL-AP BHARTI Airtel Ltd., IN 11492 4789 3985 CABLEONE, US 7552 3977 3949 VIETEL-AS-AP Viettel Group, VN 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 53775 UNALLOCATED 8.20.88.0/24 3737 AS-PTD, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 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 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.159.56.0/24 Origin: 174 COGENT-174, US 23.159.56.0/24 Transit: 6453 AS6453, 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 /8:18 /9:14 /10:41 /11:94 /12:297 /13:578 /14:1193 /15:2090 /16:13642 /17:8151 /18:13407 /19:24609 /20:44325 /21:51869 /22:112743 /23:104731 /24:633500 /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 6757 12556 UNINET, MX 12479 6247 7305 UNI2-AS, ES 11492 3602 4789 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3021 4700 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2405 14162 AMAZON-02, US 30036 2320 2664 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 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) ---------------------------------------------- 1:2444 2:1535 3:961 4:10 5:4993 6:189 7:6 8:1507 9:6 11:172 12:1234 13:563 14:2600 15:411 16:303 17:387 18:901 20:584 21:4 22:188 23:8047 24:2554 25:2 27:2785 29:19 31:3373 32:31 33:1 34:84 35:275 36:4550 37:4558 38:9321 39:1174 40:461 41:4422 42:1929 43:2865 44:401 45:19257 46:5081 47:374 49:2158 50:2051 51:592 52:1614 54:320 55:1102 56:11 57:287 58:2316 59:1324 60:1185 61:3029 62:3088 63:1732 64:5922 65:2113 66:5888 67:3240 68:1493 69:4147 70:1035 71:622 72:3008 74:2894 75:1514 76:601 77:2760 78:1908 79:1782 80:2286 81:2105 82:3744 83:1467 84:2023 85:3572 86:1106 87:2132 88:1334 89:4579 90:841 91:8391 92:2833 93:2992 94:4180 95:4560 96:1459 97:311 98:951 99:742 100:68 101:1343 102:4259 103:32829 104:5470 105:772 106:913 107:2799 108:1190 109:4209 110:2298 111:3866 112:2749 113:1896 114:2091 115:2242 116:2128 117:3099 118:3054 119:2033 120:2340 121:1500 122:2873 123:2265 124:1643 125:2925 126:125 128:1574 129:957 130:1496 131:2248 132:776 133:462 134:1619 135:362 136:1494 137:1137 138:2850 139:1596 140:1732 141:1559 142:2251 143:2118 144:1314 145:634 146:2173 147:2117 148:2782 149:2847 150:1300 151:2658 152:2273 153:600 154:8172 155:2242 156:3798 157:2210 158:1416 159:2661 160:3680 161:2005 162:3990 163:2321 164:1957 165:2582 166:1320 167:2148 168:3825 169:783 170:5407 171:1104 172:4462 173:3422 174:910 175:1353 176:3741 177:4683 178:4285 179:2263 180:2903 181:4342 182:3806 183:2548 184:2061 185:21665 186:5434 187:4714 188:4390 189:4417 190:9682 191:1507 192:11418 193:9511 194:7841 195:5602 196:3244 197:3342 198:6062 199:6101 200:8071 201:6370 202:10374 203:10549 204:4606 205:3635 206:4330 207:3742 208:4239 209:5353 210:4709 211:2648 212:4870 213:3987 214:1043 215:52 216:7116 217:3337 218:1572 219:401 220:2198 221:1267 222:762 223:3125 End of report