IPv4 R&E Routing Table Report 23:05 GMT Thu 04 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: 995224 Prefixes after maximum aggregation (per Origin AS): 387027 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 492152 Number of IPv4 prefixes with a valid ROA: 566579 Number of IPv4 prefixes with an invalid ROA: 814 Number of IPv4 prefixes with no ROA: 427831 Total ASes present in the Internet Routing Table: 77149 Prefixes per ASN: 12.90 Origin-only ASes present in the Internet Routing Table: 66085 Origin ASes announcing only one prefix: 27000 Transit ASes present in the Internet Routing Table: 11064 Transit-only ASes present in the Internet Routing Table: 543 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: 58 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1098 Number of instances of unregistered ASNs: 1127 Number of 32-bit ASNs allocated by the RIRs: 47315 Number of 32-bit ASNs visible in the Routing Table: 38836 Prefixes from 32-bit ASNs in the Routing Table: 209389 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: 449 Number of addresses announced to Internet: 3107175680 Equivalent to 185 /8s, 51 /16s and 189 /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: 324129 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265939 Total APNIC prefixes after maximum aggregation: 78747 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256427 Unique aggregates announced from the APNIC address blocks: 105230 APNIC Region origin ASes present in the Internet Routing Table: 14735 APNIC Prefixes per ASN: 17.40 APNIC Region origin ASes announcing only one prefix: 4481 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: 10304 Number of APNIC addresses announced to Internet: 750103552 Equivalent to 44 /8s, 181 /16s and 172 /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: 291336 Total ARIN prefixes after maximum aggregation: 133004 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293271 Unique aggregates announced from the ARIN address blocks: 142333 ARIN Region origin ASes present in the Internet Routing Table: 19264 ARIN Prefixes per ASN: 15.22 ARIN Region origin ASes announcing only one prefix: 7061 ARIN Region transit ASes present in the Internet Routing Table: 1918 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5310 Number of ARIN addresses announced to Internet: 1349439488 Equivalent to 80 /8s, 110 /16s and 208 /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: 277809 Total RIPE prefixes after maximum aggregation: 137518 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276969 Unique aggregates announced from the RIPE address blocks: 179382 RIPE Region origin ASes present in the Internet Routing Table: 29024 RIPE Prefixes per ASN: 9.54 RIPE Region origin ASes announcing only one prefix: 12097 RIPE Region transit ASes present in the Internet Routing Table: 4034 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: 12659 Number of RIPE addresses announced to Internet: 731984896 Equivalent to 43 /8s, 161 /16s and 52 /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: 124025 Total LACNIC prefixes after maximum aggregation: 30253 LACNIC Deaggregation factor: 4.10 Prefixes being announced from the LACNIC address blocks: 120247 Unique aggregates announced from the LACNIC address blocks: 49330 LACNIC Region origin ASes present in the Internet Routing Table: 11277 LACNIC Prefixes per ASN: 10.66 LACNIC Region origin ASes announcing only one prefix: 2651 LACNIC Region transit ASes present in the Internet Routing Table: 2540 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: 9242 Number of LACNIC addresses announced to Internet: 170740480 Equivalent to 10 /8s, 45 /16s and 75 /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: 35017 Total AfriNIC prefixes after maximum aggregation: 6782 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 47861 Unique aggregates announced from the AfriNIC address blocks: 15489 AfriNIC Region origin ASes present in the Internet Routing Table: 1957 AfriNIC Prefixes per ASN: 24.46 AfriNIC Region origin ASes announcing only one prefix: 710 AfriNIC Region transit ASes present in the Internet Routing Table: 384 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: 1321 Number of AfriNIC addresses announced to Internet: 104662784 Equivalent to 6 /8s, 61 /16s and 7 /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 12913 8729 114 CHINAMOBILE-CN China Mobile Communication 7545 6138 838 615 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4386 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3936 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3655 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3303 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2979 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2916 864 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2177 427 182 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 14250 40858 5395 AMAZON-02, US 11492 4732 314 822 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3659 1320 82 SHAW, CA 22773 3355 3034 181 ASN-CXA-ALL-CCI-22773-RDC, US 396982 3223 3859 441 GOOGLE-CLOUD-PLATFORM, US 749 3221 54766 2472 DNIC-AS-00749, US 174 3206 8759 839 COGENT-174, US 4155 2963 231 1744 USDA-1, US 16625 2914 1236 2171 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 7497 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3906 3395 125 AKAMAI-ASN1, NL 9009 3881 365 2184 M247, RO 12389 3118 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2405 361 585 TELLCOM-AS, TR 212238 2390 170 1735 CDNEXT, GB 203020 1874 225 863 HOSTROYALE, IN 13188 1606 100 34 TRIOLAN, UA 8452 1605 1852 14 TE-AS TE-AS, EG 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 12330 3275 573 UNINET, MX 10620 3486 472 1048 Telmex Colombia S.A., CO 13999 2526 510 345 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1370 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1178 371 22 Telefonica del Peru S.A.A., PE 11664 1083 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1056 67 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 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 1824 652 28 RAYA-AS, EG 36992 1425 1495 377 ETISALAT-MISR, EG 29571 1371 102 38 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1245 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 1048 521 43 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 572 82 3 KENET-AS, KE 15399 549 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 14250 40858 5395 AMAZON-02, US 9808 12913 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12330 3275 573 UNINET, MX 12479 7497 1711 150 UNI2-AS, ES 7545 6138 838 615 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4732 314 822 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4386 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3936 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 12913 12799 CHINAMOBILE-CN China Mobile Communications Grou 8151 12330 11757 UNINET, MX 12479 7497 7347 UNI2-AS, ES 7545 6138 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4386 4360 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4732 3910 CABLEONE, US 7552 3936 3909 VIETEL-AS-AP Viettel Group, VN 20940 3906 3781 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 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 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 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 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 /11:92 /12:298 /13:576 /14:1199 /15:2125 /16:13728 /17:8135 /18:13367 /19:24449 /20:44136 /21:51745 /22:112095 /23:102932 /24:620276 /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 6533 12330 UNINET, MX 12479 6446 7497 UNI2-AS, ES 11492 3548 4732 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3456 3659 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2504 3355 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2400 14250 AMAZON-02, US 30036 2325 2668 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2206 3486 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) ---------------------------------------------- 1:2422 2:1504 3:927 4:10 5:4828 6:156 7:6 8:1541 9:4 11:172 12:1254 13:554 14:2614 15:396 16:302 17:386 18:903 20:568 21:4 22:188 23:7798 24:2659 25:2 27:2799 29:19 31:3356 32:29 33:1 34:84 35:265 36:4308 37:4522 38:9321 39:996 40:261 41:4309 42:1935 43:2727 44:378 45:18821 46:5118 47:342 49:1993 50:2048 51:588 52:1607 54:362 55:1100 56:11 57:280 58:2272 59:1294 60:1181 61:2896 62:3039 63:1774 64:5603 65:2140 66:4816 67:3095 68:1071 69:3886 70:1038 71:624 72:2861 74:2802 75:1504 76:601 77:2779 78:1896 79:1755 80:2223 81:2080 82:3280 83:1452 84:1942 85:3446 86:1098 87:2117 88:1318 89:4487 90:803 91:8413 92:2767 93:2966 94:4158 95:4422 96:1448 97:310 98:950 99:728 100:71 101:1475 102:4025 103:32782 104:5285 105:770 106:876 107:2652 108:1225 109:4197 110:2236 111:3583 112:2469 113:1835 114:1979 115:2183 116:2087 117:2698 118:3029 119:1949 120:2200 121:1330 122:2785 123:2237 124:1711 125:2907 126:91 128:1556 129:960 130:1283 131:2143 132:776 133:459 134:1610 135:366 136:1486 137:1120 138:2802 139:1590 140:1620 141:1545 142:1906 143:2019 144:1217 145:606 146:2175 147:2106 148:2717 149:2909 150:1268 151:2362 152:2109 153:563 154:7246 155:1962 156:3188 157:1964 158:1404 159:2551 160:3578 161:1935 162:3909 163:2287 164:1910 165:2553 166:1553 167:2069 168:3823 169:776 170:5250 171:1000 172:4241 173:3407 174:902 175:1342 176:3791 177:4696 178:4030 179:2304 180:2729 181:4192 182:3661 183:2352 184:2047 185:21601 186:5354 187:4621 188:4306 189:4315 190:9472 191:1520 192:11361 193:9469 194:7792 195:5557 196:3287 197:3247 198:6088 199:8646 200:8059 201:6355 202:10419 203:10647 204:4566 205:3612 206:4483 207:3526 208:4264 209:5155 210:4680 211:2653 212:4651 213:3835 214:1044 215:51 216:6842 217:3288 218:1479 219:393 220:2156 221:1208 222:747 223:2822 End of report