IPv4 R&E Routing Table Report 23:05 GMT Wed 20 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: 992775 Prefixes after maximum aggregation (per Origin AS): 385689 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 489881 Number of IPv4 prefixes with a valid ROA: 562301 Number of IPv4 prefixes with an invalid ROA: 879 Number of IPv4 prefixes with no ROA: 429595 Total ASes present in the Internet Routing Table: 77137 Prefixes per ASN: 12.87 Origin-only ASes present in the Internet Routing Table: 66100 Origin ASes announcing only one prefix: 26996 Transit ASes present in the Internet Routing Table: 11037 Transit-only ASes present in the Internet Routing Table: 545 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: 97 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1105 Number of instances of unregistered ASNs: 1134 Number of 32-bit ASNs allocated by the RIRs: 47227 Number of 32-bit ASNs visible in the Routing Table: 38804 Prefixes from 32-bit ASNs in the Routing Table: 208411 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: 430 Number of addresses announced to Internet: 3106638080 Equivalent to 185 /8s, 43 /16s and 137 /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: 323410 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265380 Total APNIC prefixes after maximum aggregation: 78317 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 256518 Unique aggregates announced from the APNIC address blocks: 105219 APNIC Region origin ASes present in the Internet Routing Table: 14741 APNIC Prefixes per ASN: 17.40 APNIC Region origin ASes announcing only one prefix: 4489 APNIC Region transit ASes present in the Internet Routing Table: 1995 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: 10294 Number of APNIC addresses announced to Internet: 749660160 Equivalent to 44 /8s, 174 /16s and 232 /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: 290080 Total ARIN prefixes after maximum aggregation: 132584 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 292131 Unique aggregates announced from the ARIN address blocks: 142014 ARIN Region origin ASes present in the Internet Routing Table: 19242 ARIN Prefixes per ASN: 15.18 ARIN Region origin ASes announcing only one prefix: 7056 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: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5289 Number of ARIN addresses announced to Internet: 1348771840 Equivalent to 80 /8s, 100 /16s and 160 /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: 277395 Total RIPE prefixes after maximum aggregation: 137059 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276489 Unique aggregates announced from the RIPE address blocks: 179010 RIPE Region origin ASes present in the Internet Routing Table: 29027 RIPE Prefixes per ASN: 9.53 RIPE Region origin ASes announcing only one prefix: 12093 RIPE Region transit ASes present in the Internet Routing Table: 4013 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: 12658 Number of RIPE addresses announced to Internet: 732248832 Equivalent to 43 /8s, 165 /16s and 59 /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: 124135 Total LACNIC prefixes after maximum aggregation: 30211 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120402 Unique aggregates announced from the LACNIC address blocks: 49228 LACNIC Region origin ASes present in the Internet Routing Table: 11280 LACNIC Prefixes per ASN: 10.67 LACNIC Region origin ASes announcing only one prefix: 2644 LACNIC Region transit ASes present in the Internet Routing Table: 2543 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9245 Number of LACNIC addresses announced to Internet: 170681600 Equivalent to 10 /8s, 44 /16s and 101 /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: 34680 Total AfriNIC prefixes after maximum aggregation: 6791 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 46805 Unique aggregates announced from the AfriNIC address blocks: 14033 AfriNIC Region origin ASes present in the Internet Routing Table: 1951 AfriNIC Prefixes per ASN: 23.99 AfriNIC Region origin ASes announcing only one prefix: 714 AfriNIC Region transit ASes present in the Internet Routing Table: 375 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: 1318 Number of AfriNIC addresses announced to Internet: 105032704 Equivalent to 6 /8s, 66 /16s and 172 /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 12896 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4614 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3925 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3706 1044 69 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3301 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2971 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 865 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2176 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 13932 41104 5353 AMAZON-02, US 11492 4742 314 779 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3648 1320 82 SHAW, CA 22773 3340 3033 166 ASN-CXA-ALL-CCI-22773-RDC, US 174 3305 8759 845 COGENT-174, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3218 3858 437 GOOGLE-CLOUD-PLATFORM, US 4155 2941 229 1743 USDA-1, US 16625 2904 1227 2165 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 7549 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3904 3395 123 AKAMAI-ASN1, NL 9009 3872 366 2186 M247, RO 12389 3112 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2396 361 586 TELLCOM-AS, TR 212238 2330 165 1698 CDNEXT, GB 203020 1710 218 804 HOSTROYALE, IN 13188 1605 100 37 TRIOLAN, UA 8452 1600 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 12237 3270 572 UNINET, MX 10620 3482 472 1053 Telmex Colombia S.A., CO 13999 2529 511 349 Mega Cable, S.A. de C.V., MX 11830 1987 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 1185 371 22 Telefonica del Peru S.A.A., PE 11664 1085 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1055 67 375 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1019 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 1499 94 32 ORANGE-COTE-IVOIRE, CI 36992 1420 1495 374 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1241 389 20 LINKdotNET-AS, EG 37069 1045 1096 13 MOBINIL, EG 36935 973 521 43 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 570 82 3 KENET-AS, KE 15399 546 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 13932 41104 5353 AMAZON-02, US 9808 12896 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12237 3270 572 UNINET, MX 12479 7549 1711 149 UNI2-AS, ES 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4742 314 779 CABLEONE, US 18403 4614 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3925 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 12896 12781 CHINAMOBILE-CN China Mobile Communications Grou 8151 12237 11665 UNINET, MX 12479 7549 7400 UNI2-AS, ES 7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4614 4587 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4742 3963 CABLEONE, US 7552 3925 3898 VIETEL-AS-AP Viettel Group, VN 20940 3904 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 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 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 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 /13:576 /14:1198 /15:2126 /16:13752 /17:8156 /18:13415 /19:24444 /20:43798 /21:51640 /22:111879 /23:102711 /24:618619 /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 12479 6510 7549 UNI2-AS, ES 8151 6447 12237 UNINET, MX 11492 3555 4742 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3445 3648 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2491 3340 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2374 13932 AMAZON-02, US 30036 2310 2653 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2202 3482 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 2:1500 3:917 4:9 5:4793 6:158 7:6 8:1535 9:4 11:172 12:1254 13:478 14:2589 15:381 16:285 17:379 18:902 20:564 21:4 22:188 23:7765 24:2653 25:2 27:2800 29:19 31:3372 32:29 33:1 34:84 35:261 36:4306 37:4568 38:9313 39:982 40:262 41:4267 42:2078 43:2746 44:380 45:18678 46:5099 47:336 49:1964 50:2040 51:592 52:1560 54:329 55:1098 56:11 57:282 58:2280 59:1289 60:1178 61:2902 62:3020 63:1779 64:5580 65:2143 66:4773 67:3091 68:1069 69:3868 70:1038 71:627 72:2848 74:2795 75:1505 76:602 77:2772 78:1892 79:1736 80:2223 81:2077 82:3245 83:1444 84:1913 85:3445 86:1126 87:2137 88:1320 89:4483 90:774 91:8409 92:2760 93:2976 94:4153 95:4429 96:1443 97:310 98:953 99:706 100:71 101:1471 102:3905 103:32927 104:5271 105:759 106:875 107:2641 108:1258 109:4181 110:2249 111:3577 112:2462 113:1860 114:1976 115:2190 116:2093 117:2698 118:3041 119:1943 120:2199 121:1324 122:2808 123:2224 124:1704 125:2925 126:91 128:1584 129:957 130:1284 131:2058 132:775 133:451 134:1626 135:356 136:1471 137:1121 138:2829 139:1593 140:1616 141:1537 142:1915 143:1989 144:1205 145:587 146:2176 147:2101 148:2716 149:3013 150:1270 151:2405 152:2106 153:527 154:6956 155:1888 156:2944 157:1961 158:1388 159:2530 160:3604 161:1922 162:3895 163:2269 164:1884 165:2477 166:1537 167:2060 168:3867 169:765 170:5221 171:1002 172:4236 173:3391 174:904 175:1326 176:3746 177:4777 178:3993 179:2321 180:2732 181:4185 182:3602 183:2388 184:2058 185:21615 186:5312 187:4587 188:4301 189:4306 190:9443 191:1586 192:11335 193:9466 194:7785 195:5618 196:3287 197:3226 198:6083 199:8634 200:8054 201:6391 202:10395 203:10642 204:4569 205:3597 206:4476 207:3514 208:4275 209:5118 210:4669 211:2649 212:4599 213:3823 214:1039 215:51 216:6776 217:3296 218:1433 219:399 220:2144 221:1210 222:741 223:2825 End of report