IPv4 R&E Routing Table Report 23:05 GMT Tue 12 Aug, 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: 992744 Prefixes after maximum aggregation (per Origin AS): 384771 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 489024 Number of IPv4 prefixes with a valid ROA: 560961 Number of IPv4 prefixes with an invalid ROA: 799 Number of IPv4 prefixes with no ROA: 430984 Total ASes present in the Internet Routing Table: 77068 Prefixes per ASN: 12.88 Origin-only ASes present in the Internet Routing Table: 66018 Origin ASes announcing only one prefix: 26977 Transit ASes present in the Internet Routing Table: 11050 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: 57 Max AS path prepend of ASN ( 37447) 36 Prefixes from unregistered ASNs in the Routing Table: 1133 Number of instances of unregistered ASNs: 1165 Number of 32-bit ASNs allocated by the RIRs: 47119 Number of 32-bit ASNs visible in the Routing Table: 38722 Prefixes from 32-bit ASNs in the Routing Table: 207445 Number of bogon 32-bit ASNs visible in the Routing Table: 82 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 427 Number of addresses announced to Internet: 3107491328 Equivalent to 185 /8s, 56 /16s and 142 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 323177 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265117 Total APNIC prefixes after maximum aggregation: 78235 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 255993 Unique aggregates announced from the APNIC address blocks: 104914 APNIC Region origin ASes present in the Internet Routing Table: 14715 APNIC Prefixes per ASN: 17.40 APNIC Region origin ASes announcing only one prefix: 4475 APNIC Region transit ASes present in the Internet Routing Table: 1996 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10272 Number of APNIC addresses announced to Internet: 749484800 Equivalent to 44 /8s, 172 /16s and 59 /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: 290823 Total ARIN prefixes after maximum aggregation: 132381 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 292342 Unique aggregates announced from the ARIN address blocks: 141861 ARIN Region origin ASes present in the Internet Routing Table: 19230 ARIN Prefixes per ASN: 15.20 ARIN Region origin ASes announcing only one prefix: 7043 ARIN Region transit ASes present in the Internet Routing Table: 1926 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5271 Number of ARIN addresses announced to Internet: 1349360640 Equivalent to 80 /8s, 109 /16s and 156 /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: 276808 Total RIPE prefixes after maximum aggregation: 136706 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 275876 Unique aggregates announced from the RIPE address blocks: 178621 RIPE Region origin ASes present in the Internet Routing Table: 28996 RIPE Prefixes per ASN: 9.51 RIPE Region origin ASes announcing only one prefix: 12085 RIPE Region transit ASes present in the Internet Routing Table: 4026 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: 12625 Number of RIPE addresses announced to Internet: 732101632 Equivalent to 43 /8s, 162 /16s and 252 /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: 124149 Total LACNIC prefixes after maximum aggregation: 29919 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 120462 Unique aggregates announced from the LACNIC address blocks: 49070 LACNIC Region origin ASes present in the Internet Routing Table: 11276 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2666 LACNIC Region transit ASes present in the Internet Routing Table: 2532 Average LACNIC Region AS path length visible: 5.5 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9239 Number of LACNIC addresses announced to Internet: 171142912 Equivalent to 10 /8s, 51 /16s and 111 /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: 34714 Total AfriNIC prefixes after maximum aggregation: 6797 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 47644 Unique aggregates announced from the AfriNIC address blocks: 14181 AfriNIC Region origin ASes present in the Internet Routing Table: 1951 AfriNIC Prefixes per ASN: 24.42 AfriNIC Region origin ASes announcing only one prefix: 708 AfriNIC Region transit ASes present in the Internet Routing Table: 381 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1315 Number of AfriNIC addresses announced to Internet: 105159936 Equivalent to 6 /8s, 68 /16s and 157 /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 12862 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6139 838 617 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4592 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3942 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3709 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3298 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2969 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2922 865 506 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2176 427 181 TATACOMM-AS TATA Communications formerly 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 13774 41094 5313 AMAZON-02, US 11492 4784 317 680 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3643 1320 82 SHAW, CA 174 3598 8769 854 COGENT-174, US 22773 3340 3029 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3204 3858 436 GOOGLE-CLOUD-PLATFORM, US 4155 2929 228 1742 USDA-1, US 16625 2918 1232 2175 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 7562 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3903 3395 123 AKAMAI-ASN1, NL 9009 3860 366 2177 M247, RO 12389 3111 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 586 TELLCOM-AS, TR 212238 2328 165 1693 CDNEXT, GB 13188 1605 100 37 TRIOLAN, UA 8452 1581 1852 14 TE-AS TE-AS, EG 203020 1523 191 669 HOSTROYALE, IN 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 12329 3272 580 UNINET, MX 10620 3474 472 1051 Telmex Colombia S.A., CO 13999 2520 510 360 Mega Cable, S.A. de C.V., MX 11830 1986 369 64 Instituto Costarricense de Electricidad y 28573 1370 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1184 371 22 Telefonica del Peru S.A.A., PE 11664 1072 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1063 68 369 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1015 2487 55 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 1770 660 28 RAYA-AS, EG 29571 1492 94 32 ORANGE-COTE-IVOIRE, CI 36992 1421 1501 377 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1243 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 972 520 43 Vodafone-, EG 36914 575 82 3 KENET-AS, KE 20011 574 154 212 INTERNET-SOLUTIONS, ZA 15399 529 56 53 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 13774 41094 5313 AMAZON-02, US 9808 12862 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12329 3272 580 UNINET, MX 12479 7562 1711 149 UNI2-AS, ES 7545 6139 838 617 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4784 317 680 CABLEONE, US 18403 4592 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3942 1332 27 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 12862 12747 CHINAMOBILE-CN China Mobile Communications Grou 8151 12329 11749 UNINET, MX 12479 7562 7413 UNI2-AS, ES 7545 6139 5522 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4592 4565 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4784 4104 CABLEONE, US 7552 3942 3915 VIETEL-AS-AP Viettel Group, VN 20940 3903 3780 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 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 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 23.140.216.0/24 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /11:92 /12:298 /13:577 /14:1199 /15:2129 /16:13765 /17:8149 /18:13421 /19:24431 /20:43827 /21:51617 /22:111899 /23:102739 /24:618530 /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 6548 12329 UNINET, MX 12479 6522 7562 UNI2-AS, ES 11492 3593 4784 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3440 3643 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2492 3340 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2350 13774 AMAZON-02, US 30036 2299 2641 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2194 3474 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) ---------------------------------------------- 1:2423 2:1494 3:876 4:10 5:4756 6:157 7:6 8:1547 9:2 11:172 12:1255 13:468 14:2584 15:370 16:285 17:379 18:900 20:563 21:4 22:188 23:7747 24:2652 25:2 27:2796 29:19 31:3369 32:29 33:1 34:83 35:261 36:4286 37:4565 38:9542 39:979 40:263 41:4276 42:2062 43:2736 44:377 45:18701 46:5116 47:338 49:1889 50:2041 51:592 52:1553 54:321 55:1103 56:11 57:268 58:2240 59:1293 60:1175 61:2920 62:3010 63:1779 64:5573 65:2146 66:4757 67:3091 68:1076 69:3882 70:1039 71:625 72:2855 74:2806 75:1505 76:606 77:2769 78:1891 79:1733 80:2209 81:2062 82:3231 83:1432 84:1915 85:3445 86:1118 87:2134 88:1310 89:4442 90:774 91:8417 92:2759 93:2947 94:4132 95:4435 96:1449 97:310 98:957 99:701 100:71 101:1471 102:3888 103:32848 104:5259 105:761 106:874 107:2652 108:1262 109:4177 110:2241 111:3571 112:2445 113:1857 114:1974 115:2186 116:2092 117:2693 118:2980 119:1920 120:2204 121:1325 122:2794 123:2239 124:1703 125:2924 126:91 128:1576 129:969 130:1286 131:2045 132:775 133:450 134:1611 135:356 136:1469 137:1130 138:2829 139:1596 140:1614 141:1531 142:1922 143:1964 144:1177 145:576 146:2170 147:2101 148:2713 149:2978 150:1292 151:2336 152:2098 153:528 154:7574 155:1891 156:3074 157:1959 158:1375 159:2524 160:3596 161:1904 162:3877 163:2256 164:1878 165:2464 166:1537 167:2041 168:3875 169:778 170:5212 171:997 172:4230 173:3403 174:911 175:1324 176:3743 177:4719 178:3984 179:2318 180:2727 181:4136 182:3591 183:2381 184:2060 185:21581 186:5209 187:4649 188:4273 189:4350 190:9511 191:1511 192:11309 193:9468 194:7794 195:5616 196:3283 197:3197 198:6093 199:8625 200:8072 201:6402 202:10393 203:10658 204:4580 205:3642 206:4501 207:3506 208:4275 209:5115 210:4666 211:2644 212:4587 213:3819 214:1038 215:50 216:6785 217:3286 218:1430 219:398 220:2150 221:1208 222:742 223:2814 End of report