IPv4 R&E Routing Table Report 23:05 GMT Tue 14 Oct, 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: 1006615 Prefixes after maximum aggregation (per Origin AS): 390933 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 497137 Number of IPv4 prefixes with a valid ROA: 577940 Number of IPv4 prefixes with an invalid ROA: 698 Number of IPv4 prefixes with no ROA: 427977 Total ASes present in the Internet Routing Table: 77341 Prefixes per ASN: 13.02 Origin-only ASes present in the Internet Routing Table: 66297 Origin ASes announcing only one prefix: 27066 Transit ASes present in the Internet Routing Table: 11044 Transit-only ASes present in the Internet Routing Table: 547 Paths with bogon ASNs present in the IPv4 Routing Table: 66 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: 1056 Number of instances of unregistered ASNs: 1122 Number of 32-bit ASNs allocated by the RIRs: 47697 Number of 32-bit ASNs visible in the Routing Table: 39106 Prefixes from 32-bit ASNs in the Routing Table: 213422 Number of bogon 32-bit ASNs visible in the Routing Table: 152 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 454 Number of addresses announced to Internet: 3111098624 Equivalent to 185 /8s, 111 /16s and 153 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 327802 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270413 Total APNIC prefixes after maximum aggregation: 79965 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 260093 Unique aggregates announced from the APNIC address blocks: 105752 APNIC Region origin ASes present in the Internet Routing Table: 14801 APNIC Prefixes per ASN: 17.57 APNIC Region origin ASes announcing only one prefix: 4488 APNIC Region transit ASes present in the Internet Routing Table: 1984 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10380 Number of APNIC addresses announced to Internet: 751633408 Equivalent to 44 /8s, 205 /16s and 4 /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: 295699 Total ARIN prefixes after maximum aggregation: 134275 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 296745 Unique aggregates announced from the ARIN address blocks: 143956 ARIN Region origin ASes present in the Internet Routing Table: 19311 ARIN Prefixes per ASN: 15.37 ARIN Region origin ASes announcing only one prefix: 7095 ARIN Region transit ASes present in the Internet Routing Table: 1910 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: 5356 Number of ARIN addresses announced to Internet: 1352336896 Equivalent to 80 /8s, 155 /16s and 6 /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: 279704 Total RIPE prefixes after maximum aggregation: 138795 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279693 Unique aggregates announced from the RIPE address blocks: 181070 RIPE Region origin ASes present in the Internet Routing Table: 29067 RIPE Prefixes per ASN: 9.62 RIPE Region origin ASes announcing only one prefix: 12104 RIPE Region transit ASes present in the Internet Routing Table: 4037 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12757 Number of RIPE addresses announced to Internet: 732472320 Equivalent to 43 /8s, 168 /16s and 164 /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: 124896 Total LACNIC prefixes after maximum aggregation: 30348 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121020 Unique aggregates announced from the LACNIC address blocks: 49421 LACNIC Region origin ASes present in the Internet Routing Table: 11309 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2663 LACNIC Region transit ASes present in the Internet Routing Table: 2541 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9278 Number of LACNIC addresses announced to Internet: 170712064 Equivalent to 10 /8s, 44 /16s and 220 /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: 34847 Total AfriNIC prefixes after maximum aggregation: 6850 AfriNIC Deaggregation factor: 5.09 Prefixes being announced from the AfriNIC address blocks: 48610 Unique aggregates announced from the AfriNIC address blocks: 16537 AfriNIC Region origin ASes present in the Internet Routing Table: 1971 AfriNIC Prefixes per ASN: 24.66 AfriNIC Region origin ASes announcing only one prefix: 716 AfriNIC Region transit ASes present in the Internet Routing Table: 381 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: 1335 Number of AfriNIC addresses announced to Internet: 103699968 Equivalent to 6 /8s, 46 /16s and 86 /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 13820 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6182 834 601 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4448 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3975 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3687 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3302 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3140 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2929 863 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2511 516 1635 HUTCHISON-AS-AP HGC Global Communications 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 14273 40985 5342 AMAZON-02, US 11492 4770 322 786 CABLEONE, US 22773 4118 3077 365 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3684 1320 82 SHAW, CA 396982 3273 4824 464 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3116 241 1746 USDA-1, US 174 3021 8763 851 COGENT-174, US 16625 2903 1238 2170 AKAMAI-AS, 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 7406 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3974 373 2242 M247, RO 20940 3914 3395 124 AKAMAI-ASN1, NL 12389 3137 2313 866 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2519 180 1832 CDNEXT, GB 34984 2414 363 575 TELLCOM-AS, TR 203020 1686 198 996 HOSTROYALE, IN 8452 1645 1852 14 TE-AS TE-AS, EG 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 12391 3284 577 UNINET, MX 10620 3476 468 1086 Telmex Colombia S.A., CO 13999 2530 511 346 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1271 371 23 Telefonica del Peru S.A.A., PE 11664 1216 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1059 67 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, 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 1767 594 28 RAYA-AS, EG 36992 1508 1498 383 ETISALAT-MISR, EG 29571 1284 102 52 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1249 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 1010 523 47 Vodafone-, EG 36914 574 82 3 KENET-AS, KE 20011 571 151 205 NTT-DATA-Inc, ZA 15399 551 57 54 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 14273 40985 5342 AMAZON-02, US 9808 13820 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12391 3284 577 UNINET, MX 12479 7406 1711 149 UNI2-AS, ES 7545 6182 834 601 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4770 322 786 CABLEONE, US 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4448 347 25 FPT-AS-AP FPT Telecom Company, VN 22773 4118 3077 365 ASN-CXA-ALL-CCI-22773-RDC, US 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 13820 13703 CHINAMOBILE-CN China Mobile Communications Grou 8151 12391 11814 UNINET, MX 12479 7406 7257 UNI2-AS, ES 7545 6182 5581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4448 4423 FPT-AS-AP FPT Telecom Company, VN 9498 4477 4165 BBIL-AP BHARTI Airtel Ltd., IN 11492 4770 3984 CABLEONE, US 7552 3975 3947 VIETEL-AS-AP Viettel Group, VN 20940 3914 3790 AKAMAI-ASN1, NL 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 7029 WINDSTREAM, 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 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 397015 UNALLOCATED 8.44.246.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, 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 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 /10:41 /11:93 /12:300 /13:579 /14:1197 /15:2121 /16:13742 /17:8138 /18:13395 /19:24554 /20:44163 /21:51790 /22:112341 /23:104002 /24:630129 /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 6607 12391 UNINET, MX 12479 6372 7406 UNI2-AS, ES 11492 3583 4770 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3472 3684 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2586 4118 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2393 14273 AMAZON-02, US 30036 2306 2646 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3476 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) ---------------------------------------------- 1:2427 2:1528 3:940 4:10 5:4850 6:170 7:6 8:1528 9:6 11:172 12:1240 13:562 14:2649 15:403 16:304 17:388 18:905 20:575 21:4 22:188 23:7894 24:2651 25:2 27:2793 29:19 31:3336 32:31 33:1 34:84 35:274 36:4467 37:4534 38:9504 39:1107 40:471 41:4261 42:1972 43:2794 44:392 45:19188 46:5172 47:369 49:2089 50:2049 51:595 52:1592 54:359 55:1091 56:11 57:281 58:2315 59:1319 60:1189 61:2955 62:3074 63:1757 64:5650 65:2123 66:5092 67:3114 68:1282 69:4028 70:1044 71:625 72:2988 74:2829 75:1503 76:602 77:2763 78:1892 79:1745 80:2247 81:2127 82:3467 83:1476 84:1987 85:3512 86:1102 87:2138 88:1324 89:4520 90:813 91:8373 92:2809 93:2972 94:4138 95:4501 96:1470 97:312 98:949 99:755 100:71 101:1479 102:4153 103:32837 104:5440 105:762 106:894 107:2733 108:1202 109:4225 110:2257 111:3786 112:2702 113:1865 114:2070 115:2300 116:2103 117:3045 118:3046 119:2010 120:2290 121:1480 122:2802 123:2254 124:1704 125:2910 126:125 128:1566 129:960 130:1394 131:2168 132:786 133:462 134:1617 135:364 136:1488 137:1126 138:2820 139:1593 140:1637 141:1544 142:2159 143:2087 144:1271 145:629 146:2177 147:2134 148:2745 149:2940 150:1290 151:2606 152:2154 153:575 154:7773 155:2113 156:3163 157:1999 158:1434 159:2603 160:3626 161:1986 162:3964 163:2296 164:1951 165:2550 166:1567 167:2111 168:3819 169:776 170:5377 171:1059 172:4460 173:3416 174:906 175:1354 176:3758 177:4739 178:4296 179:2279 180:2878 181:4262 182:3747 183:2562 184:2063 185:21628 186:5340 187:4697 188:4387 189:4395 190:9721 191:1550 192:11364 193:9480 194:7797 195:5569 196:3277 197:3352 198:6071 199:8800 200:8060 201:6361 202:10420 203:10583 204:4582 205:3627 206:4395 207:3571 208:4239 209:5310 210:4687 211:2687 212:4830 213:3892 214:1032 215:52 216:6942 217:3347 218:1577 219:397 220:2191 221:1248 222:751 223:3077 End of report