IPv4 R&E Routing Table Report 23:05 GMT Sun 12 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: 1006719 Prefixes after maximum aggregation (per Origin AS): 390805 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 497353 Number of IPv4 prefixes with a valid ROA: 577166 Number of IPv4 prefixes with an invalid ROA: 762 Number of IPv4 prefixes with no ROA: 428791 Total ASes present in the Internet Routing Table: 77347 Prefixes per ASN: 13.02 Origin-only ASes present in the Internet Routing Table: 66301 Origin ASes announcing only one prefix: 27056 Transit ASes present in the Internet Routing Table: 11046 Transit-only ASes present in the Internet Routing Table: 553 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: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1056 Number of instances of unregistered ASNs: 1085 Number of 32-bit ASNs allocated by the RIRs: 47693 Number of 32-bit ASNs visible in the Routing Table: 39103 Prefixes from 32-bit ASNs in the Routing Table: 213434 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: 446 Number of addresses announced to Internet: 3111084032 Equivalent to 185 /8s, 111 /16s and 96 /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: 327675 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270101 Total APNIC prefixes after maximum aggregation: 79884 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 259858 Unique aggregates announced from the APNIC address blocks: 105864 APNIC Region origin ASes present in the Internet Routing Table: 14790 APNIC Prefixes per ASN: 17.57 APNIC Region origin ASes announcing only one prefix: 4477 APNIC Region transit ASes present in the Internet Routing Table: 1988 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: 10370 Number of APNIC addresses announced to Internet: 751602176 Equivalent to 44 /8s, 204 /16s and 138 /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: 295588 Total ARIN prefixes after maximum aggregation: 134190 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 296646 Unique aggregates announced from the ARIN address blocks: 143941 ARIN Region origin ASes present in the Internet Routing Table: 19311 ARIN Prefixes per ASN: 15.36 ARIN Region origin ASes announcing only one prefix: 7095 ARIN Region transit ASes present in the Internet Routing Table: 1913 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: 5353 Number of ARIN addresses announced to Internet: 1352240128 Equivalent to 80 /8s, 153 /16s and 140 /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: 280190 Total RIPE prefixes after maximum aggregation: 138837 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279769 Unique aggregates announced from the RIPE address blocks: 181185 RIPE Region origin ASes present in the Internet Routing Table: 29079 RIPE Prefixes per ASN: 9.62 RIPE Region origin ASes announcing only one prefix: 12106 RIPE Region transit ASes present in the Internet Routing Table: 4036 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: 12763 Number of RIPE addresses announced to Internet: 732451840 Equivalent to 43 /8s, 168 /16s and 84 /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: 124747 Total LACNIC prefixes after maximum aggregation: 30339 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120893 Unique aggregates announced from the LACNIC address blocks: 49379 LACNIC Region origin ASes present in the Internet Routing Table: 11306 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2663 LACNIC Region transit ASes present in the Internet Routing Table: 2532 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: 9280 Number of LACNIC addresses announced to Internet: 170688000 Equivalent to 10 /8s, 44 /16s and 126 /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: 35037 Total AfriNIC prefixes after maximum aggregation: 6854 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 49107 Unique aggregates announced from the AfriNIC address blocks: 16591 AfriNIC Region origin ASes present in the Internet Routing Table: 1971 AfriNIC Prefixes per ASN: 24.91 AfriNIC Region origin ASes announcing only one prefix: 715 AfriNIC Region transit ASes present in the Internet Routing Table: 379 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: 1337 Number of AfriNIC addresses announced to Internet: 103861504 Equivalent to 6 /8s, 48 /16s and 205 /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 13731 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6184 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4476 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4447 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3948 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3687 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3140 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2927 863 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2469 512 1597 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 14286 40988 5350 AMAZON-02, US 11492 4756 321 791 CABLEONE, US 22773 4117 3076 364 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3684 1320 82 SHAW, CA 396982 3273 4824 465 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3109 241 1740 USDA-1, US 174 3053 8764 852 COGENT-174, US 16625 2875 1224 2156 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 7402 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3984 374 2243 M247, RO 20940 3894 3395 124 AKAMAI-ASN1, NL 12389 3110 2310 844 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2515 180 1828 CDNEXT, GB 34984 2414 363 575 TELLCOM-AS, TR 203020 2036 223 1004 HOSTROYALE, IN 8452 1637 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 12367 3282 573 UNINET, MX 10620 3476 468 1086 Telmex Colombia S.A., CO 13999 2528 511 345 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, 11664 1226 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1166 371 22 Telefonica del Peru S.A.A., PE 22884 1061 67 361 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 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 1512 1498 385 ETISALAT-MISR, EG 29571 1284 102 52 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 1010 523 47 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 560 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 14286 40988 5350 AMAZON-02, US 9808 13731 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12367 3282 573 UNINET, MX 12479 7402 1711 149 UNI2-AS, ES 7545 6184 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4756 321 791 CABLEONE, US 9498 4476 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4447 347 25 FPT-AS-AP FPT Telecom Company, VN 22773 4117 3076 364 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 13731 13614 CHINAMOBILE-CN China Mobile Communications Grou 8151 12367 11794 UNINET, MX 12479 7402 7253 UNI2-AS, ES 7545 6184 5581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4447 4422 FPT-AS-AP FPT Telecom Company, VN 9498 4476 4164 BBIL-AP BHARTI Airtel Ltd., IN 11492 4756 3965 CABLEONE, US 7552 3948 3920 VIETEL-AS-AP Viettel Group, VN 7155 3859 3774 VIASAT-SP-BACKBONE, 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 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 /15:2120 /16:13743 /17:8147 /18:13403 /19:24563 /20:44170 /21:51759 /22:112369 /23:103924 /24:630281 /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 6589 12367 UNINET, MX 12479 6367 7402 UNI2-AS, ES 11492 3569 4756 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3472 3684 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2586 4117 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2392 14286 AMAZON-02, US 30036 2300 2640 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) ---------------------------------------------- 1:2430 2:1512 3:940 4:10 5:4861 6:170 7:6 8:1532 9:6 11:172 12:1240 13:561 14:2648 15:401 16:304 17:388 18:908 20:575 21:4 22:188 23:7918 24:2652 25:2 27:2795 29:19 31:3357 32:31 33:1 34:84 35:273 36:4464 37:4544 38:9531 39:1098 40:469 41:4290 42:1983 43:2784 44:391 45:19220 46:5167 47:366 49:2088 50:2050 51:595 52:1592 54:359 55:1181 56:11 57:282 58:2317 59:1321 60:1189 61:2950 62:3087 63:1762 64:5660 65:2131 66:5052 67:3113 68:1212 69:3990 70:1044 71:625 72:2984 74:2823 75:1502 76:598 77:2769 78:1895 79:1755 80:2247 81:2123 82:3462 83:1474 84:1986 85:3525 86:1101 87:2135 88:1324 89:4517 90:809 91:8384 92:2808 93:2978 94:4152 95:4496 96:1471 97:312 98:948 99:755 100:71 101:1478 102:4157 103:32855 104:5452 105:778 106:895 107:2730 108:1205 109:4222 110:2258 111:3771 112:2662 113:1857 114:2071 115:2300 116:2091 117:3026 118:3037 119:2010 120:2282 121:1478 122:2802 123:2253 124:1707 125:2910 126:125 128:1568 129:958 130:1377 131:2156 132:784 133:462 134:1617 135:364 136:1488 137:1127 138:2818 139:1596 140:1633 141:1544 142:2143 143:2081 144:1273 145:628 146:2177 147:2129 148:2738 149:2933 150:1287 151:2601 152:2172 153:576 154:7885 155:2102 156:3297 157:1999 158:1434 159:2602 160:3623 161:1993 162:3951 163:2297 164:1950 165:2552 166:1566 167:2110 168:3823 169:776 170:5377 171:1057 172:4457 173:3412 174:906 175:1356 176:3808 177:4721 178:4293 179:2262 180:2849 181:4243 182:3746 183:2546 184:2056 185:21657 186:5365 187:4680 188:4386 189:4390 190:9657 191:1547 192:11368 193:9460 194:7799 195:5575 196:3287 197:3346 198:6070 199:8794 200:8064 201:6339 202:10450 203:10582 204:4592 205:3634 206:4387 207:3572 208:4270 209:5312 210:4688 211:2684 212:4824 213:3889 214:1030 215:52 216:6942 217:3355 218:1574 219:396 220:2194 221:1248 222:751 223:3070 End of report