IPv4 R&E Routing Table Report 23:05 GMT Sun 05 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: 1003295 Prefixes after maximum aggregation (per Origin AS): 389369 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495869 Number of IPv4 prefixes with a valid ROA: 574268 Number of IPv4 prefixes with an invalid ROA: 754 Number of IPv4 prefixes with no ROA: 428273 Total ASes present in the Internet Routing Table: 77255 Prefixes per ASN: 12.99 Origin-only ASes present in the Internet Routing Table: 66222 Origin ASes announcing only one prefix: 27035 Transit ASes present in the Internet Routing Table: 11033 Transit-only ASes present in the Internet Routing Table: 540 Paths with bogon ASNs present in the IPv4 Routing Table: 27 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 57 Max AS path prepend of ASN ( 37447) 53 Prefixes from unregistered ASNs in the Routing Table: 1028 Number of instances of unregistered ASNs: 1057 Number of 32-bit ASNs allocated by the RIRs: 47653 Number of 32-bit ASNs visible in the Routing Table: 39019 Prefixes from 32-bit ASNs in the Routing Table: 211822 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 422 Number of addresses announced to Internet: 3110267392 Equivalent to 185 /8s, 98 /16s and 234 /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: 326858 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269237 Total APNIC prefixes after maximum aggregation: 79512 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 259040 Unique aggregates announced from the APNIC address blocks: 105787 APNIC Region origin ASes present in the Internet Routing Table: 14765 APNIC Prefixes per ASN: 17.54 APNIC Region origin ASes announcing only one prefix: 4468 APNIC Region transit ASes present in the Internet Routing Table: 1985 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: 10342 Number of APNIC addresses announced to Internet: 751145472 Equivalent to 44 /8s, 197 /16s and 146 /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: 293622 Total ARIN prefixes after maximum aggregation: 133631 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 295132 Unique aggregates announced from the ARIN address blocks: 142937 ARIN Region origin ASes present in the Internet Routing Table: 19294 ARIN Prefixes per ASN: 15.30 ARIN Region origin ASes announcing only one prefix: 7091 ARIN Region transit ASes present in the Internet Routing Table: 1914 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5339 Number of ARIN addresses announced to Internet: 1351375616 Equivalent to 80 /8s, 140 /16s and 91 /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: 279545 Total RIPE prefixes after maximum aggregation: 138345 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279099 Unique aggregates announced from the RIPE address blocks: 180727 RIPE Region origin ASes present in the Internet Routing Table: 29056 RIPE Prefixes per ASN: 9.61 RIPE Region origin ASes announcing only one prefix: 12096 RIPE Region transit ASes present in the Internet Routing Table: 4042 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: 12743 Number of RIPE addresses announced to Internet: 732943872 Equivalent to 43 /8s, 175 /16s and 214 /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: 124834 Total LACNIC prefixes after maximum aggregation: 30359 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121053 Unique aggregates announced from the LACNIC address blocks: 49465 LACNIC Region origin ASes present in the Internet Routing Table: 11304 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2666 LACNIC Region transit ASes present in the Internet Routing Table: 2518 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: 9266 Number of LACNIC addresses announced to Internet: 170778112 Equivalent to 10 /8s, 45 /16s and 222 /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: 35029 Total AfriNIC prefixes after maximum aggregation: 6836 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 48549 Unique aggregates announced from the AfriNIC address blocks: 16580 AfriNIC Region origin ASes present in the Internet Routing Table: 1962 AfriNIC Prefixes per ASN: 24.74 AfriNIC Region origin ASes announcing only one prefix: 714 AfriNIC Region transit ASes present in the Internet Routing Table: 375 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1329 Number of AfriNIC addresses announced to Internet: 103792896 Equivalent to 6 /8s, 47 /16s and 193 /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 13670 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6182 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4527 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3958 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3725 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3302 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3120 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2927 863 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2361 505 1513 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 14260 40988 5362 AMAZON-02, US 11492 4752 320 794 CABLEONE, US 22773 3981 3068 334 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3679 1320 82 SHAW, CA 396982 3270 4824 464 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3086 239 1714 USDA-1, US 174 3050 8766 860 COGENT-174, US 16625 2909 1240 2174 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 7430 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3986 374 2241 M247, RO 20940 3917 3395 124 AKAMAI-ASN1, NL 12389 3124 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2467 176 1791 CDNEXT, GB 34984 2414 363 575 TELLCOM-AS, TR 203020 1851 200 900 HOSTROYALE, IN 8452 1647 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 12379 3278 574 UNINET, MX 10620 3499 474 1068 Telmex Colombia S.A., CO 13999 2543 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1210 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1178 371 23 Telefonica del Peru S.A.A., PE 22884 1064 68 349 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 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 1770 616 28 RAYA-AS, EG 36992 1508 1498 383 ETISALAT-MISR, EG 29571 1283 102 53 ORANGE-COTE-IVOIRE, CI 24863 1250 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1085 1096 13 MOBINIL, EG 36935 950 520 42 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 567 82 3 KENET-AS, KE 15399 550 56 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 14260 40988 5362 AMAZON-02, US 9808 13670 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12379 3278 574 UNINET, MX 12479 7430 1711 149 UNI2-AS, ES 7545 6182 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4752 320 794 CABLEONE, US 18403 4527 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 312 BBIL-AP BHARTI Airtel Ltd., IN 9009 3986 374 2241 M247, RO 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 13670 13554 CHINAMOBILE-CN China Mobile Communications Grou 8151 12379 11805 UNINET, MX 12479 7430 7281 UNI2-AS, ES 7545 6182 5579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4527 4501 FPT-AS-AP FPT Telecom Company, VN 9498 4470 4158 BBIL-AP BHARTI Airtel Ltd., IN 11492 4752 3958 CABLEONE, US 7552 3958 3930 VIETEL-AS-AP Viettel Group, VN 20940 3917 3793 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 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, 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 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 23.140.216.0/24 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /12:301 /13:578 /14:1197 /15:2120 /16:13750 /17:8138 /18:13385 /19:24523 /20:44199 /21:51718 /22:112308 /23:103660 /24:627254 /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 6602 12379 UNINET, MX 12479 6396 7430 UNI2-AS, ES 11492 3565 4752 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3467 3679 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2523 3981 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2382 14260 AMAZON-02, US 30036 2291 2631 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2212 3499 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) ---------------------------------------------- 1:2429 2:1519 3:947 4:10 5:4849 6:169 7:6 8:1528 9:6 11:172 12:1243 13:561 14:2640 15:402 16:304 17:389 18:904 20:574 21:4 22:188 23:7862 24:2648 25:2 27:2787 29:19 31:3354 32:31 33:1 34:84 35:272 36:4454 37:4542 38:9516 39:1089 40:295 41:4372 42:2015 43:2777 44:386 45:18983 46:5182 47:338 49:2027 50:2044 51:593 52:1590 54:358 55:1108 56:11 57:283 58:2284 59:1320 60:1188 61:2949 62:3083 63:1761 64:5655 65:2137 66:4926 67:3104 68:1095 69:3925 70:1044 71:631 72:2973 74:2830 75:1494 76:597 77:2774 78:1896 79:1751 80:2245 81:2108 82:3431 83:1472 84:1983 85:3511 86:1102 87:2122 88:1323 89:4497 90:808 91:8383 92:2785 93:2976 94:4169 95:4458 96:1473 97:310 98:952 99:732 100:71 101:1476 102:4131 103:32817 104:5355 105:769 106:895 107:2662 108:1203 109:4222 110:2257 111:3758 112:2652 113:1858 114:1992 115:2301 116:2094 117:2941 118:3051 119:2006 120:2244 121:1348 122:2813 123:2252 124:1707 125:2910 126:93 128:1567 129:956 130:1269 131:2126 132:783 133:461 134:1606 135:365 136:1490 137:1123 138:2800 139:1599 140:1639 141:1544 142:2036 143:2053 144:1263 145:627 146:2175 147:2122 148:2734 149:2920 150:1287 151:2553 152:2170 153:574 154:7442 155:2055 156:3506 157:2006 158:1427 159:2592 160:3567 161:1993 162:3940 163:2295 164:2129 165:2558 166:1561 167:2096 168:3817 169:775 170:5351 171:1026 172:4238 173:3381 174:909 175:1356 176:3804 177:4724 178:4257 179:2273 180:2762 181:4248 182:3725 183:2550 184:2052 185:21645 186:5372 187:4683 188:4321 189:4376 190:9706 191:1538 192:11370 193:9471 194:7793 195:5572 196:3271 197:3353 198:6080 199:8746 200:8093 201:6358 202:10420 203:10562 204:4581 205:3611 206:4382 207:3560 208:4282 209:5296 210:4712 211:2679 212:4794 213:3881 214:1035 215:52 216:6887 217:3344 218:1564 219:396 220:2193 221:1234 222:750 223:3032 End of report