IPv4 R&E Routing Table Report 23:05 GMT Sun 31 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: 995111 Prefixes after maximum aggregation (per Origin AS): 386811 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 492198 Number of IPv4 prefixes with a valid ROA: 565753 Number of IPv4 prefixes with an invalid ROA: 762 Number of IPv4 prefixes with no ROA: 428596 Total ASes present in the Internet Routing Table: 77150 Prefixes per ASN: 12.90 Origin-only ASes present in the Internet Routing Table: 66103 Origin ASes announcing only one prefix: 27001 Transit ASes present in the Internet Routing Table: 11047 Transit-only ASes present in the Internet Routing Table: 549 Paths with bogon ASNs present in the IPv4 Routing Table: 30 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1106 Number of instances of unregistered ASNs: 1141 Number of 32-bit ASNs allocated by the RIRs: 47304 Number of 32-bit ASNs visible in the Routing Table: 38837 Prefixes from 32-bit ASNs in the Routing Table: 209326 Number of bogon 32-bit ASNs visible in the Routing Table: 85 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 447 Number of addresses announced to Internet: 3107114496 Equivalent to 185 /8s, 50 /16s and 206 /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: 323923 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265938 Total APNIC prefixes after maximum aggregation: 78755 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256308 Unique aggregates announced from the APNIC address blocks: 105166 APNIC Region origin ASes present in the Internet Routing Table: 14727 APNIC Prefixes per ASN: 17.40 APNIC Region origin ASes announcing only one prefix: 4465 APNIC Region transit ASes present in the Internet Routing Table: 1990 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: 10296 Number of APNIC addresses announced to Internet: 750042112 Equivalent to 44 /8s, 180 /16s and 188 /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: 291232 Total ARIN prefixes after maximum aggregation: 132891 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293329 Unique aggregates announced from the ARIN address blocks: 142367 ARIN Region origin ASes present in the Internet Routing Table: 19250 ARIN Prefixes per ASN: 15.24 ARIN Region origin ASes announcing only one prefix: 7063 ARIN Region transit ASes present in the Internet Routing Table: 1916 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: 5305 Number of ARIN addresses announced to Internet: 1349433088 Equivalent to 80 /8s, 110 /16s and 183 /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: 277840 Total RIPE prefixes after maximum aggregation: 137368 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277006 Unique aggregates announced from the RIPE address blocks: 179354 RIPE Region origin ASes present in the Internet Routing Table: 29039 RIPE Prefixes per ASN: 9.54 RIPE Region origin ASes announcing only one prefix: 12111 RIPE Region transit ASes present in the Internet Routing Table: 4029 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: 12671 Number of RIPE addresses announced to Internet: 732186368 Equivalent to 43 /8s, 164 /16s and 71 /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: 124064 Total LACNIC prefixes after maximum aggregation: 30286 LACNIC Deaggregation factor: 4.10 Prefixes being announced from the LACNIC address blocks: 120326 Unique aggregates announced from the LACNIC address blocks: 49446 LACNIC Region origin ASes present in the Internet Routing Table: 11284 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: 2541 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: 9244 Number of LACNIC addresses announced to Internet: 170738688 Equivalent to 10 /8s, 45 /16s and 68 /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: 34931 Total AfriNIC prefixes after maximum aggregation: 6789 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 47695 Unique aggregates announced from the AfriNIC address blocks: 15479 AfriNIC Region origin ASes present in the Internet Routing Table: 1955 AfriNIC Prefixes per ASN: 24.40 AfriNIC Region origin ASes announcing only one prefix: 711 AfriNIC Region transit ASes present in the Internet Routing Table: 376 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1321 Number of AfriNIC addresses announced to Internet: 104470528 Equivalent to 6 /8s, 58 /16s and 24 /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 12916 8729 114 CHINAMOBILE-CN China Mobile Communication 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4385 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3943 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3663 1044 68 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2979 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2918 864 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2175 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 14088 40855 5389 AMAZON-02, US 11492 4744 315 801 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3651 1320 82 SHAW, CA 22773 3350 3034 179 ASN-CXA-ALL-CCI-22773-RDC, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3218 3858 436 GOOGLE-CLOUD-PLATFORM, US 174 3185 8758 839 COGENT-174, US 4155 2955 230 1737 USDA-1, US 16625 2908 1233 2168 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 7505 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3907 3395 125 AKAMAI-ASN1, NL 9009 3876 366 2182 M247, RO 12389 3118 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2404 361 585 TELLCOM-AS, TR 212238 2370 169 1726 CDNEXT, GB 203020 1835 221 843 HOSTROYALE, IN 13188 1606 100 34 TRIOLAN, UA 8452 1602 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 12305 3273 572 UNINET, MX 10620 3486 472 1048 Telmex Colombia S.A., CO 13999 2532 511 347 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1369 2432 266 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 1069 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1053 67 377 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 1765 660 28 RAYA-AS, EG 29571 1498 94 37 ORANGE-COTE-IVOIRE, CI 36992 1421 1495 374 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1243 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 973 521 43 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 552 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 14088 40855 5389 AMAZON-02, US 9808 12916 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12305 3273 572 UNINET, MX 12479 7505 1711 150 UNI2-AS, ES 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4744 315 801 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4385 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3943 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 12916 12802 CHINAMOBILE-CN China Mobile Communications Grou 8151 12305 11733 UNINET, MX 12479 7505 7355 UNI2-AS, ES 7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4385 4359 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4744 3943 CABLEONE, US 7552 3943 3916 VIETEL-AS-AP Viettel Group, VN 20940 3907 3782 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 /15:2124 /16:13731 /17:8140 /18:13391 /19:24434 /20:44159 /21:51708 /22:112034 /23:102911 /24:620243 /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 6507 12305 UNINET, MX 12479 6456 7505 UNI2-AS, ES 11492 3560 4744 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3448 3651 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2500 3350 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2385 14088 AMAZON-02, US 30036 2318 2661 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) ---------------------------------------------- 1:2419 2:1505 3:919 4:10 5:4828 6:156 7:6 8:1539 9:4 11:172 12:1253 13:504 14:2604 15:393 16:286 17:386 18:900 20:567 21:4 22:188 23:7816 24:2660 25:2 27:2801 29:19 31:3357 32:29 33:1 34:84 35:261 36:4306 37:4518 38:9389 39:993 40:266 41:4271 42:1936 43:2736 44:379 45:18934 46:5102 47:342 49:1989 50:2059 51:591 52:1597 54:359 55:1110 56:11 57:282 58:2278 59:1290 60:1182 61:2897 62:3031 63:1776 64:5593 65:2132 66:4804 67:3089 68:1068 69:3882 70:1037 71:627 72:2855 74:2801 75:1505 76:601 77:2776 78:1896 79:1748 80:2225 81:2080 82:3260 83:1447 84:1916 85:3481 86:1127 87:2119 88:1318 89:4474 90:793 91:8417 92:2769 93:2980 94:4149 95:4426 96:1447 97:310 98:949 99:723 100:71 101:1471 102:3990 103:32839 104:5315 105:759 106:876 107:2658 108:1232 109:4183 110:2238 111:3579 112:2474 113:1837 114:1980 115:2193 116:2087 117:2702 118:3019 119:1948 120:2202 121:1327 122:2802 123:2222 124:1709 125:2910 126:91 128:1554 129:958 130:1275 131:2145 132:780 133:459 134:1616 135:366 136:1477 137:1120 138:2813 139:1589 140:1615 141:1543 142:1901 143:1998 144:1204 145:605 146:2175 147:2127 148:2711 149:2910 150:1262 151:2402 152:2109 153:563 154:7260 155:1966 156:3172 157:1960 158:1472 159:2540 160:3579 161:1938 162:3900 163:2280 164:1899 165:2520 166:1553 167:2065 168:3833 169:776 170:5248 171:996 172:4235 173:3402 174:904 175:1322 176:3790 177:4812 178:4021 179:2292 180:2733 181:4186 182:3623 183:2362 184:2054 185:21598 186:5301 187:4591 188:4307 189:4323 190:9428 191:1532 192:11348 193:9475 194:7786 195:5654 196:3283 197:3236 198:6092 199:8640 200:8070 201:6390 202:10394 203:10633 204:4562 205:3626 206:4475 207:3528 208:4268 209:5159 210:4663 211:2651 212:4628 213:3826 214:1039 215:51 216:6815 217:3287 218:1450 219:393 220:2153 221:1208 222:748 223:2827 End of report