IPv4 R&E Routing Table Report 23:05 GMT Wed 01 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: 1003061 Prefixes after maximum aggregation (per Origin AS): 389327 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495866 Number of IPv4 prefixes with a valid ROA: 573690 Number of IPv4 prefixes with an invalid ROA: 755 Number of IPv4 prefixes with no ROA: 428616 Total ASes present in the Internet Routing Table: 77271 Prefixes per ASN: 12.98 Origin-only ASes present in the Internet Routing Table: 66225 Origin ASes announcing only one prefix: 27037 Transit ASes present in the Internet Routing Table: 11046 Transit-only ASes present in the Internet Routing Table: 549 Paths with bogon ASNs present in the IPv4 Routing Table: 28 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 58 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1028 Number of instances of unregistered ASNs: 1058 Number of 32-bit ASNs allocated by the RIRs: 47597 Number of 32-bit ASNs visible in the Routing Table: 39028 Prefixes from 32-bit ASNs in the Routing Table: 211654 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 435 Number of addresses announced to Internet: 3111618048 Equivalent to 185 /8s, 119 /16s and 134 /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: 326702 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269319 Total APNIC prefixes after maximum aggregation: 79446 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 259199 Unique aggregates announced from the APNIC address blocks: 105826 APNIC Region origin ASes present in the Internet Routing Table: 14770 APNIC Prefixes per ASN: 17.55 APNIC Region origin ASes announcing only one prefix: 4465 APNIC Region transit ASes present in the Internet Routing Table: 1979 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: 10349 Number of APNIC addresses announced to Internet: 751061504 Equivalent to 44 /8s, 196 /16s and 74 /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: 293567 Total ARIN prefixes after maximum aggregation: 133588 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 294964 Unique aggregates announced from the ARIN address blocks: 142936 ARIN Region origin ASes present in the Internet Routing Table: 19293 ARIN Prefixes per ASN: 15.29 ARIN Region origin ASes announcing only one prefix: 7087 ARIN Region transit ASes present in the Internet Routing Table: 1931 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 49 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5345 Number of ARIN addresses announced to Internet: 1352669952 Equivalent to 80 /8s, 160 /16s and 27 /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: 279424 Total RIPE prefixes after maximum aggregation: 138294 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278984 Unique aggregates announced from the RIPE address blocks: 180646 RIPE Region origin ASes present in the Internet Routing Table: 29062 RIPE Prefixes per ASN: 9.60 RIPE Region origin ASes announcing only one prefix: 12098 RIPE Region transit ASes present in the Internet Routing Table: 4016 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: 12744 Number of RIPE addresses announced to Internet: 732896512 Equivalent to 43 /8s, 175 /16s and 29 /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: 124717 Total LACNIC prefixes after maximum aggregation: 30472 LACNIC Deaggregation factor: 4.09 Prefixes being announced from the LACNIC address blocks: 120964 Unique aggregates announced from the LACNIC address blocks: 49467 LACNIC Region origin ASes present in the Internet Routing Table: 11296 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2668 LACNIC Region transit ASes present in the Internet Routing Table: 2539 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9261 Number of LACNIC addresses announced to Internet: 170800128 Equivalent to 10 /8s, 46 /16s and 52 /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: 35006 Total AfriNIC prefixes after maximum aggregation: 6837 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 48515 Unique aggregates announced from the AfriNIC address blocks: 16607 AfriNIC Region origin ASes present in the Internet Routing Table: 1964 AfriNIC Prefixes per ASN: 24.70 AfriNIC Region origin ASes announcing only one prefix: 719 AfriNIC Region transit ASes present in the Internet Routing Table: 383 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1329 Number of AfriNIC addresses announced to Internet: 103953152 Equivalent to 6 /8s, 50 /16s and 51 /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 6180 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4501 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3954 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3722 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3301 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3121 828 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2925 862 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2353 504 1505 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 14295 40897 5385 AMAZON-02, US 11492 4749 320 797 CABLEONE, US 22773 3973 3049 336 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3679 1320 82 SHAW, CA 396982 3274 4824 462 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 174 3181 8767 862 COGENT-174, US 4155 3069 238 1718 USDA-1, 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 7437 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3947 370 2206 M247, RO 20940 3915 3395 124 AKAMAI-ASN1, NL 12389 3124 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2454 174 1778 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1889 203 906 HOSTROYALE, IN 8452 1632 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 12378 3279 581 UNINET, MX 10620 3505 474 1048 Telmex Colombia S.A., CO 13999 2542 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, 6147 1177 371 23 Telefonica del Peru S.A.A., PE 22884 1063 68 352 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 2486 56 TIM SA, BR 11664 964 278 32 Techtel LMDS Comunicaciones Interactivas 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 1509 1498 384 ETISALAT-MISR, EG 29571 1282 102 53 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 950 520 42 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 566 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 14295 40897 5385 AMAZON-02, US 9808 13670 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12378 3279 581 UNINET, MX 12479 7437 1711 149 UNI2-AS, ES 7545 6180 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4749 320 797 CABLEONE, US 18403 4501 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 312 BBIL-AP BHARTI Airtel Ltd., IN 22773 3973 3049 336 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 13670 13554 CHINAMOBILE-CN China Mobile Communications Grou 8151 12378 11797 UNINET, MX 12479 7437 7288 UNI2-AS, ES 7545 6180 5577 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4501 4475 FPT-AS-AP FPT Telecom Company, VN 9498 4470 4158 BBIL-AP BHARTI Airtel Ltd., IN 11492 4749 3952 CABLEONE, US 7552 3954 3926 VIETEL-AS-AP Viettel Group, VN 20940 3915 3791 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 23.146.124.0/24 Origin: 7029 WINDSTREAM, US 23.146.124.0/24 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 /8:16 /9:14 /10:41 /11:93 /12:301 /13:579 /14:1198 /15:2125 /16:13751 /17:8142 /18:13378 /19:24505 /20:44180 /21:51714 /22:112269 /23:103528 /24:627227 /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 6594 12378 UNINET, MX 12479 6400 7437 UNI2-AS, ES 11492 3562 4749 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3467 3679 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2522 3973 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2397 14295 AMAZON-02, US 30036 2290 2630 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2223 3505 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) ---------------------------------------------- 1:2428 2:1519 3:941 4:10 5:4839 6:169 7:6 8:1528 9:6 11:172 12:1241 13:568 14:2639 15:402 16:303 17:389 18:907 20:574 21:4 22:188 23:7857 24:2648 25:2 27:2782 29:19 31:3346 32:31 33:1 34:84 35:272 36:4457 37:4545 38:9495 39:1089 40:296 41:4362 42:1996 43:2776 44:385 45:18945 46:5176 47:342 49:2025 50:2045 51:593 52:1600 54:359 55:1177 56:11 57:283 58:2283 59:1341 60:1187 61:3014 62:3081 63:1760 64:5644 65:2134 66:4920 67:3098 68:1097 69:3919 70:1044 71:630 72:2928 74:2819 75:1494 76:597 77:2777 78:1897 79:1759 80:2248 81:2108 82:3437 83:1468 84:1977 85:3513 86:1099 87:2123 88:1322 89:4495 90:808 91:8381 92:2783 93:2980 94:4174 95:4465 96:1471 97:312 98:953 99:738 100:71 101:1475 102:4120 103:32822 104:5358 105:769 106:895 107:2660 108:1207 109:4215 110:2252 111:3781 112:2651 113:1855 114:1991 115:2298 116:2094 117:2940 118:3051 119:1956 120:2259 121:1346 122:2812 123:2251 124:1710 125:2909 126:93 128:1567 129:960 130:1273 131:2135 132:778 133:461 134:1605 135:365 136:1487 137:1117 138:2795 139:1602 140:1627 141:1548 142:1914 143:2053 144:1264 145:628 146:2171 147:2118 148:2733 149:2907 150:1285 151:2542 152:2170 153:577 154:7441 155:2053 156:3473 157:2003 158:1417 159:2582 160:3566 161:1990 162:3940 163:2230 164:2128 165:2593 166:1557 167:2099 168:3827 169:770 170:5362 171:1019 172:4238 173:3410 174:909 175:1354 176:3805 177:4725 178:4264 179:2270 180:2760 181:4258 182:3725 183:2616 184:2053 185:21652 186:5375 187:4677 188:4314 189:4383 190:9703 191:1546 192:11370 193:9473 194:7792 195:5576 196:3277 197:3350 198:6083 199:8734 200:8079 201:6354 202:10426 203:10639 204:4575 205:3610 206:4501 207:3557 208:4283 209:5285 210:4704 211:2685 212:4787 213:3884 214:1034 215:52 216:6894 217:3342 218:1564 219:396 220:2190 221:1234 222:750 223:3027 End of report