IPv4 R&E Routing Table Report 23:05 GMT Tue 30 Sep, 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: 1002208 Prefixes after maximum aggregation (per Origin AS): 388687 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495199 Number of IPv4 prefixes with a valid ROA: 573213 Number of IPv4 prefixes with an invalid ROA: 715 Number of IPv4 prefixes with no ROA: 428280 Total ASes present in the Internet Routing Table: 77197 Prefixes per ASN: 12.98 Origin-only ASes present in the Internet Routing Table: 66166 Origin ASes announcing only one prefix: 26999 Transit ASes present in the Internet Routing Table: 11031 Transit-only ASes present in the Internet Routing Table: 552 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: 1037 Number of instances of unregistered ASNs: 1067 Number of 32-bit ASNs allocated by the RIRs: 47586 Number of 32-bit ASNs visible in the Routing Table: 38950 Prefixes from 32-bit ASNs in the Routing Table: 211514 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: 425 Number of addresses announced to Internet: 3111390720 Equivalent to 185 /8s, 116 /16s and 14 /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: 326591 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 268543 Total APNIC prefixes after maximum aggregation: 79172 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 258478 Unique aggregates announced from the APNIC address blocks: 105372 APNIC Region origin ASes present in the Internet Routing Table: 14693 APNIC Prefixes per ASN: 17.59 APNIC Region origin ASes announcing only one prefix: 4435 APNIC Region transit ASes present in the Internet Routing Table: 1967 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: 10277 Number of APNIC addresses announced to Internet: 750890496 Equivalent to 44 /8s, 193 /16s and 174 /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: 293410 Total ARIN prefixes after maximum aggregation: 133536 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 294837 Unique aggregates announced from the ARIN address blocks: 142879 ARIN Region origin ASes present in the Internet Routing Table: 19299 ARIN Prefixes per ASN: 15.28 ARIN Region origin ASes announcing only one prefix: 7093 ARIN Region transit ASes present in the Internet Routing Table: 1928 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: 5348 Number of ARIN addresses announced to Internet: 1352672768 Equivalent to 80 /8s, 160 /16s and 38 /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: 279310 Total RIPE prefixes after maximum aggregation: 138194 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278806 Unique aggregates announced from the RIPE address blocks: 180508 RIPE Region origin ASes present in the Internet Routing Table: 29056 RIPE Prefixes per ASN: 9.60 RIPE Region origin ASes announcing only one prefix: 12089 RIPE Region transit ASes present in the Internet Routing Table: 4023 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: 12736 Number of RIPE addresses announced to Internet: 732858368 Equivalent to 43 /8s, 174 /16s and 136 /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: 124728 Total LACNIC prefixes after maximum aggregation: 30246 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120967 Unique aggregates announced from the LACNIC address blocks: 49435 LACNIC Region origin ASes present in the Internet Routing Table: 11290 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2661 LACNIC Region transit ASes present in the Internet Routing Table: 2529 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: 9257 Number of LACNIC addresses announced to Internet: 170786304 Equivalent to 10 /8s, 45 /16s and 254 /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: 35180 Total AfriNIC prefixes after maximum aggregation: 6848 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 48695 Unique aggregates announced from the AfriNIC address blocks: 16631 AfriNIC Region origin ASes present in the Internet Routing Table: 1969 AfriNIC Prefixes per ASN: 24.73 AfriNIC Region origin ASes announcing only one prefix: 721 AfriNIC Region transit ASes present in the Internet Routing Table: 385 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1332 Number of AfriNIC addresses announced to Internet: 103952128 Equivalent to 6 /8s, 50 /16s and 47 /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 6163 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4496 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4469 536 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3951 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 3120 828 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 862 502 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2328 501 1484 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 14268 40895 5406 AMAZON-02, US 11492 4747 320 802 CABLEONE, US 22773 3951 3045 315 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3678 1320 82 SHAW, CA 396982 3272 4824 461 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 174 3155 8767 863 COGENT-174, US 4155 3078 238 1706 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 7459 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3948 370 2207 M247, RO 20940 3914 3395 124 AKAMAI-ASN1, NL 12389 3124 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2449 174 1773 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1852 199 871 HOSTROYALE, IN 8452 1626 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 12376 3278 574 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, 11664 1235 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1177 371 23 Telefonica del Peru S.A.A., PE 22884 1058 67 366 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 1846 652 28 RAYA-AS, EG 36992 1510 1498 384 ETISALAT-MISR, EG 29571 1280 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 1059 520 42 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 569 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 14268 40895 5406 AMAZON-02, US 9808 13670 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12376 3278 574 UNINET, MX 12479 7459 1711 149 UNI2-AS, ES 7545 6163 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4747 320 802 CABLEONE, US 18403 4496 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4469 536 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3951 1332 28 VIETEL-AS-AP Viettel Group, 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 13670 13554 CHINAMOBILE-CN China Mobile Communications Grou 8151 12376 11802 UNINET, MX 12479 7459 7310 UNI2-AS, ES 7545 6163 5560 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4496 4470 FPT-AS-AP FPT Telecom Company, VN 9498 4469 4158 BBIL-AP BHARTI Airtel Ltd., IN 11492 4747 3945 CABLEONE, US 7552 3951 3923 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 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 /13:579 /14:1198 /15:2125 /16:13742 /17:8144 /18:13378 /19:24499 /20:44192 /21:51714 /22:112235 /23:103489 /24:626448 /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 6593 12376 UNINET, MX 12479 6433 7459 UNI2-AS, ES 11492 3561 4747 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3466 3678 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2511 3951 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2400 14268 AMAZON-02, US 30036 2285 2625 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 2:1517 3:945 4:10 5:4858 6:170 7:6 8:1532 9:6 11:172 12:1243 13:541 14:2635 15:401 16:303 17:389 18:906 20:569 21:4 22:188 23:7829 24:2648 25:2 27:2789 29:19 31:3345 32:31 33:1 34:84 35:272 36:4451 37:4550 38:9489 39:1090 40:293 41:4347 42:1992 43:2769 44:385 45:18922 46:5132 47:342 49:2024 50:2036 51:593 52:1602 54:358 55:1090 56:11 57:283 58:2252 59:1316 60:1187 61:2938 62:3082 63:1756 64:5628 65:2139 66:4919 67:3103 68:1103 69:3918 70:1044 71:630 72:2918 74:2820 75:1494 76:597 77:2770 78:1898 79:1753 80:2245 81:2106 82:3432 83:1468 84:1975 85:3509 86:1100 87:2124 88:1322 89:4500 90:819 91:8381 92:2784 93:2983 94:4170 95:4467 96:1471 97:312 98:953 99:741 100:71 101:1475 102:4132 103:32687 104:5358 105:772 106:895 107:2657 108:1207 109:4209 110:2253 111:3772 112:2651 113:1857 114:1986 115:2281 116:2086 117:2940 118:3049 119:1948 120:2258 121:1339 122:2811 123:2249 124:1710 125:2880 126:93 128:1565 129:960 130:1273 131:2125 132:781 133:461 134:1606 135:365 136:1492 137:1114 138:2803 139:1605 140:1638 141:1550 142:1916 143:2051 144:1265 145:628 146:2170 147:2117 148:2732 149:2847 150:1281 151:2549 152:2139 153:577 154:7444 155:2051 156:3474 157:1998 158:1417 159:2583 160:3556 161:1985 162:3942 163:2293 164:2123 165:2587 166:1561 167:2096 168:3832 169:774 170:5357 171:1017 172:4249 173:3407 174:908 175:1330 176:3809 177:4726 178:4250 179:2271 180:2722 181:4241 182:3722 183:2617 184:2054 185:21637 186:5386 187:4654 188:4316 189:4374 190:9686 191:1562 192:11379 193:9466 194:7785 195:5578 196:3274 197:3360 198:6090 199:8734 200:8084 201:6356 202:10423 203:10606 204:4572 205:3623 206:4508 207:3552 208:4279 209:5283 210:4703 211:2685 212:4786 213:3871 214:1037 215:52 216:6888 217:3341 218:1564 219:396 220:2190 221:1234 222:750 223:3023 End of report