IPv4 R&E Routing Table Report 23:05 GMT Fri 03 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: 1003105 Prefixes after maximum aggregation (per Origin AS): 389276 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495910 Number of IPv4 prefixes with a valid ROA: 574271 Number of IPv4 prefixes with an invalid ROA: 789 Number of IPv4 prefixes with no ROA: 428045 Total ASes present in the Internet Routing Table: 77262 Prefixes per ASN: 12.98 Origin-only ASes present in the Internet Routing Table: 66220 Origin ASes announcing only one prefix: 27031 Transit ASes present in the Internet Routing Table: 11042 Transit-only ASes present in the Internet Routing Table: 545 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: 1031 Number of instances of unregistered ASNs: 1061 Number of 32-bit ASNs allocated by the RIRs: 47628 Number of 32-bit ASNs visible in the Routing Table: 39022 Prefixes from 32-bit ASNs in the Routing Table: 211755 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: 428 Number of addresses announced to Internet: 3110270464 Equivalent to 185 /8s, 98 /16s and 246 /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: 326909 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269161 Total APNIC prefixes after maximum aggregation: 79468 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 259071 Unique aggregates announced from the APNIC address blocks: 105777 APNIC Region origin ASes present in the Internet Routing Table: 14768 APNIC Prefixes per ASN: 17.54 APNIC Region origin ASes announcing only one prefix: 4467 APNIC Region transit ASes present in the Internet Routing Table: 1986 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: 10346 Number of APNIC addresses announced to Internet: 751085824 Equivalent to 44 /8s, 196 /16s and 169 /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: 293679 Total ARIN prefixes after maximum aggregation: 133610 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 295153 Unique aggregates announced from the ARIN address blocks: 142893 ARIN Region origin ASes present in the Internet Routing Table: 19298 ARIN Prefixes per ASN: 15.29 ARIN Region origin ASes announcing only one prefix: 7091 ARIN Region transit ASes present in the Internet Routing Table: 1934 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: 5342 Number of ARIN addresses announced to Internet: 1351316736 Equivalent to 80 /8s, 139 /16s and 117 /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: 279529 Total RIPE prefixes after maximum aggregation: 138380 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279057 Unique aggregates announced from the RIPE address blocks: 180747 RIPE Region origin ASes present in the Internet Routing Table: 29051 RIPE Prefixes per ASN: 9.61 RIPE Region origin ASes announcing only one prefix: 12093 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: 12741 Number of RIPE addresses announced to Internet: 732895488 Equivalent to 43 /8s, 175 /16s and 25 /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: 124799 Total LACNIC prefixes after maximum aggregation: 30283 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121036 Unique aggregates announced from the LACNIC address blocks: 49497 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: 2661 LACNIC Region transit ASes present in the Internet Routing Table: 2523 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: 9259 Number of LACNIC addresses announced to Internet: 170787072 Equivalent to 10 /8s, 46 /16s and 1 /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: 34906 Total AfriNIC prefixes after maximum aggregation: 6847 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 48360 Unique aggregates announced from the AfriNIC address blocks: 16617 AfriNIC Region origin ASes present in the Internet Routing Table: 1969 AfriNIC Prefixes per ASN: 24.56 AfriNIC Region origin ASes announcing only one prefix: 719 AfriNIC Region transit ASes present in the Internet Routing Table: 380 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: 1334 Number of AfriNIC addresses announced to Internet: 103950848 Equivalent to 6 /8s, 50 /16s and 42 /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 4521 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 3121 828 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2925 862 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2355 505 1507 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 14270 40893 5373 AMAZON-02, US 11492 4752 320 794 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 3270 4824 464 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3086 239 1715 USDA-1, US 174 3041 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 7428 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3986 374 2241 M247, RO 20940 3916 3395 124 AKAMAI-ASN1, NL 12389 3124 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2467 176 1791 CDNEXT, GB 34984 2414 363 575 TELLCOM-AS, TR 203020 1889 203 906 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 12382 3278 573 UNINET, MX 10620 3504 474 1047 Telmex Colombia S.A., CO 13999 2544 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 1234 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 994 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 1677 652 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 1006 520 42 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 564 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 14270 40893 5373 AMAZON-02, US 9808 13670 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12382 3278 573 UNINET, MX 12479 7428 1711 149 UNI2-AS, ES 7545 6183 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4752 320 794 CABLEONE, US 18403 4521 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 12382 11809 UNINET, MX 12479 7428 7279 UNI2-AS, ES 7545 6183 5580 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4521 4495 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 3916 3792 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 /14:1198 /15:2119 /16:13742 /17:8126 /18:13373 /19:24507 /20:44191 /21:51705 /22:112165 /23:103661 /24:627275 /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 6601 12382 UNINET, MX 12479 6394 7428 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 2522 3973 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2393 14270 AMAZON-02, US 30036 2290 2630 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2222 3504 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 2:1518 3:945 4:10 5:4832 6:169 7:6 8:1529 9:6 11:172 12:1243 13:563 14:2638 15:401 16:304 17:389 18:903 20:574 21:4 22:188 23:7859 24:2649 25:2 27:2784 29:19 31:3354 32:31 33:1 34:84 35:272 36:4456 37:4547 38:9510 39:1089 40:295 41:4358 42:2009 43:2775 44:386 45:18966 46:5186 47:342 49:2027 50:2043 51:593 52:1593 54:359 55:1106 56:11 57:282 58:2284 59:1317 60:1188 61:2951 62:3082 63:1760 64:5650 65:2138 66:4932 67:3100 68:1094 69:3924 70:1044 71:631 72:2971 74:2824 75:1494 76:597 77:2774 78:1898 79:1749 80:2246 81:2109 82:3434 83:1473 84:1981 85:3514 86:1102 87:2121 88:1323 89:4497 90:808 91:8383 92:2785 93:2981 94:4168 95:4464 96:1473 97:310 98:952 99:735 100:71 101:1476 102:4132 103:32848 104:5359 105:772 106:896 107:2662 108:1202 109:4222 110:2255 111:3774 112:2651 113:1856 114:1993 115:2300 116:2096 117:2941 118:3054 119:1959 120:2260 121:1348 122:2813 123:2253 124:1708 125:2910 126:93 128:1569 129:956 130:1277 131:2132 132:782 133:461 134:1605 135:365 136:1490 137:1121 138:2799 139:1602 140:1640 141:1547 142:2036 143:2057 144:1271 145:627 146:2177 147:2122 148:2739 149:2911 150:1285 151:2553 152:2169 153:574 154:7444 155:2054 156:3460 157:2009 158:1423 159:2593 160:3568 161:1989 162:3942 163:2295 164:2133 165:2573 166:1562 167:2101 168:3826 169:774 170:5337 171:1021 172:4242 173:3403 174:909 175:1359 176:3802 177:4699 178:4273 179:2306 180:2766 181:4256 182:3725 183:2550 184:2051 185:21637 186:5345 187:4712 188:4320 189:4408 190:9705 191:1550 192:11370 193:9469 194:7791 195:5569 196:3259 197:3326 198:6083 199:8747 200:8099 201:6350 202:10428 203:10558 204:4581 205:3613 206:4382 207:3559 208:4283 209:5298 210:4711 211:2679 212:4794 213:3882 214:1037 215:52 216:6885 217:3342 218:1564 219:396 220:2189 221:1234 222:750 223:3030 End of report