IPv4 R&E Routing Table Report 23:05 GMT Wed 08 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: 1005129 Prefixes after maximum aggregation (per Origin AS): 390227 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 496715 Number of IPv4 prefixes with a valid ROA: 576116 Number of IPv4 prefixes with an invalid ROA: 731 Number of IPv4 prefixes with no ROA: 428282 Total ASes present in the Internet Routing Table: 77307 Prefixes per ASN: 13.00 Origin-only ASes present in the Internet Routing Table: 66265 Origin ASes announcing only one prefix: 27050 Transit ASes present in the Internet Routing Table: 11042 Transit-only ASes present in the Internet Routing Table: 551 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: 1102 Number of instances of unregistered ASNs: 1131 Number of 32-bit ASNs allocated by the RIRs: 47637 Number of 32-bit ASNs visible in the Routing Table: 39064 Prefixes from 32-bit ASNs in the Routing Table: 212223 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: 469 Number of addresses announced to Internet: 3110682880 Equivalent to 185 /8s, 105 /16s and 65 /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: 327198 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269266 Total APNIC prefixes after maximum aggregation: 79566 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 259129 Unique aggregates announced from the APNIC address blocks: 105829 APNIC Region origin ASes present in the Internet Routing Table: 14784 APNIC Prefixes per ASN: 17.53 APNIC Region origin ASes announcing only one prefix: 4482 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: 10362 Number of APNIC addresses announced to Internet: 751056640 Equivalent to 44 /8s, 196 /16s and 55 /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: 294962 Total ARIN prefixes after maximum aggregation: 134161 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 295947 Unique aggregates announced from the ARIN address blocks: 143511 ARIN Region origin ASes present in the Internet Routing Table: 19292 ARIN Prefixes per ASN: 15.34 ARIN Region origin ASes announcing only one prefix: 7094 ARIN Region transit ASes present in the Internet Routing Table: 1903 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: 5345 Number of ARIN addresses announced to Internet: 1352287232 Equivalent to 80 /8s, 154 /16s and 68 /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: 280017 Total RIPE prefixes after maximum aggregation: 138619 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279495 Unique aggregates announced from the RIPE address blocks: 180939 RIPE Region origin ASes present in the Internet Routing Table: 29064 RIPE Prefixes per ASN: 9.62 RIPE Region origin ASes announcing only one prefix: 12094 RIPE Region transit ASes present in the Internet Routing Table: 4039 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: 12750 Number of RIPE addresses announced to Internet: 732603392 Equivalent to 43 /8s, 170 /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: 124718 Total LACNIC prefixes after maximum aggregation: 30306 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120906 Unique aggregates announced from the LACNIC address blocks: 49422 LACNIC Region origin ASes present in the Internet Routing Table: 11305 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2666 LACNIC Region transit ASes present in the Internet Routing Table: 2536 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: 9276 Number of LACNIC addresses announced to Internet: 170708224 Equivalent to 10 /8s, 44 /16s and 205 /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: 35064 Total AfriNIC prefixes after maximum aggregation: 6855 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 49183 Unique aggregates announced from the AfriNIC address blocks: 16602 AfriNIC Region origin ASes present in the Internet Routing Table: 1966 AfriNIC Prefixes per ASN: 25.02 AfriNIC Region origin ASes announcing only one prefix: 714 AfriNIC Region transit ASes present in the Internet Routing Table: 378 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1331 Number of AfriNIC addresses announced to Internet: 103774208 Equivalent to 6 /8s, 47 /16s and 120 /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 6183 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4575 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3948 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3710 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3120 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 862 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2445 511 1583 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 14316 40993 5387 AMAZON-02, US 11492 4754 321 796 CABLEONE, US 22773 4025 3070 361 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3684 1320 82 SHAW, CA 396982 3272 4824 464 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3107 241 1728 USDA-1, US 174 3048 8764 855 COGENT-174, US 16625 2880 1225 2159 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 7423 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3979 373 2239 M247, RO 20940 3901 3395 124 AKAMAI-ASN1, NL 12389 3137 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2481 177 1798 CDNEXT, GB 34984 2414 363 575 TELLCOM-AS, TR 203020 2035 223 1003 HOSTROYALE, IN 8452 1653 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 12368 3282 576 UNINET, MX 10620 3479 468 1089 Telmex Colombia S.A., CO 13999 2543 511 346 Mega Cable, S.A. de C.V., MX 11830 1988 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 1227 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1179 371 23 Telefonica del Peru S.A.A., PE 22884 1065 68 345 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 1765 600 27 RAYA-AS, EG 36992 1512 1498 385 ETISALAT-MISR, EG 29571 1285 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 958 523 47 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 14316 40993 5387 AMAZON-02, US 9808 13670 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12368 3282 576 UNINET, MX 12479 7423 1711 149 UNI2-AS, ES 7545 6183 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4754 321 796 CABLEONE, US 18403 4575 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 312 BBIL-AP BHARTI Airtel Ltd., IN 22773 4025 3070 361 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 12368 11792 UNINET, MX 12479 7423 7274 UNI2-AS, ES 7545 6183 5580 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4575 4549 FPT-AS-AP FPT Telecom Company, VN 9498 4470 4158 BBIL-AP BHARTI Airtel Ltd., IN 11492 4754 3958 CABLEONE, US 7552 3948 3920 VIETEL-AS-AP Viettel Group, VN 20940 3901 3777 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 210537 UNALLOCATED 5.83.148.0/24 215828 TMW-GLOBAL-NETWORKS TMW 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 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 /16:13746 /17:8147 /18:13417 /19:24539 /20:44243 /21:51756 /22:112311 /23:103757 /24:628852 /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 12368 UNINET, MX 12479 6387 7423 UNI2-AS, ES 11492 3567 4754 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3472 3684 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2527 4025 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2406 14316 AMAZON-02, US 30036 2294 2634 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3479 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) ---------------------------------------------- 1:2431 2:1511 3:942 4:10 5:4846 6:169 7:6 8:1531 9:6 11:172 12:1242 13:562 14:2642 15:401 16:304 17:386 18:905 20:574 21:4 22:188 23:7889 24:2646 25:2 27:2794 29:19 31:3352 32:31 33:1 34:84 35:267 36:4462 37:4546 38:9520 39:1089 40:468 41:4300 42:2045 43:2771 44:388 45:19214 46:5185 47:342 49:2032 50:2050 51:594 52:1593 54:359 55:1095 56:11 57:281 58:2301 59:1318 60:1188 61:2951 62:3084 63:1760 64:5671 65:2136 66:4979 67:3118 68:1103 69:3923 70:1052 71:633 72:2986 74:2825 75:1499 76:602 77:2774 78:1896 79:1750 80:2246 81:2113 82:3454 83:1470 84:1984 85:3517 86:1099 87:2133 88:1323 89:4510 90:814 91:8387 92:2804 93:2973 94:4166 95:4487 96:1472 97:312 98:952 99:741 100:71 101:1476 102:4139 103:32823 104:5456 105:778 106:894 107:2666 108:1203 109:4228 110:2258 111:3753 112:2649 113:1863 114:1982 115:2300 116:2093 117:2944 118:3051 119:2007 120:2260 121:1349 122:2803 123:2251 124:1706 125:2910 126:125 128:1570 129:957 130:1321 131:2141 132:787 133:462 134:1604 135:364 136:1489 137:1125 138:2810 139:1598 140:1636 141:1544 142:2057 143:2084 144:1271 145:628 146:2177 147:2126 148:2748 149:2914 150:1285 151:2584 152:2166 153:574 154:7904 155:2094 156:3290 157:2008 158:1433 159:2597 160:3615 161:1996 162:3949 163:2289 164:1948 165:2559 166:1564 167:2103 168:3830 169:775 170:5366 171:1025 172:4454 173:3412 174:908 175:1356 176:3808 177:4731 178:4276 179:2277 180:2751 181:4249 182:3724 183:2551 184:2057 185:21644 186:5375 187:4676 188:4388 189:4366 190:9675 191:1548 192:11363 193:9465 194:7789 195:5579 196:3274 197:3348 198:6071 199:8781 200:8064 201:6348 202:10448 203:10571 204:4584 205:3632 206:4392 207:3565 208:4289 209:5304 210:4690 211:2685 212:4804 213:3885 214:1041 215:52 216:6919 217:3344 218:1565 219:396 220:2189 221:1234 222:751 223:3031 End of report