IPv4 R&E Routing Table Report 23:05 GMT Wed 17 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: 999722 Prefixes after maximum aggregation (per Origin AS): 388360 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 494989 Number of IPv4 prefixes with a valid ROA: 570608 Number of IPv4 prefixes with an invalid ROA: 923 Number of IPv4 prefixes with no ROA: 428191 Total ASes present in the Internet Routing Table: 77227 Prefixes per ASN: 12.95 Origin-only ASes present in the Internet Routing Table: 66169 Origin ASes announcing only one prefix: 26997 Transit ASes present in the Internet Routing Table: 11058 Transit-only ASes present in the Internet Routing Table: 548 Paths with bogon ASNs present in the IPv4 Routing Table: 27 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: 1115 Number of instances of unregistered ASNs: 1145 Number of 32-bit ASNs allocated by the RIRs: 47447 Number of 32-bit ASNs visible in the Routing Table: 38941 Prefixes from 32-bit ASNs in the Routing Table: 210775 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: 432 Number of addresses announced to Internet: 3108155392 Equivalent to 185 /8s, 66 /16s and 176 /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: 325357 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 268145 Total APNIC prefixes after maximum aggregation: 79119 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 258277 Unique aggregates announced from the APNIC address blocks: 105617 APNIC Region origin ASes present in the Internet Routing Table: 14756 APNIC Prefixes per ASN: 17.50 APNIC Region origin ASes announcing only one prefix: 4464 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: 10329 Number of APNIC addresses announced to Internet: 750336512 Equivalent to 44 /8s, 185 /16s and 58 /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: 292592 Total ARIN prefixes after maximum aggregation: 133662 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 294037 Unique aggregates announced from the ARIN address blocks: 142721 ARIN Region origin ASes present in the Internet Routing Table: 19276 ARIN Prefixes per ASN: 15.25 ARIN Region origin ASes announcing only one prefix: 7063 ARIN Region transit ASes present in the Internet Routing Table: 1936 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 41 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5325 Number of ARIN addresses announced to Internet: 1350165248 Equivalent to 80 /8s, 121 /16s and 227 /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: 278470 Total RIPE prefixes after maximum aggregation: 137821 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277841 Unique aggregates announced from the RIPE address blocks: 180081 RIPE Region origin ASes present in the Internet Routing Table: 29040 RIPE Prefixes per ASN: 9.57 RIPE Region origin ASes announcing only one prefix: 12091 RIPE Region transit ASes present in the Internet Routing Table: 4009 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: 12702 Number of RIPE addresses announced to Internet: 732495616 Equivalent to 43 /8s, 168 /16s and 255 /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: 124446 Total LACNIC prefixes after maximum aggregation: 30198 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120705 Unique aggregates announced from the LACNIC address blocks: 49469 LACNIC Region origin ASes present in the Internet Routing Table: 11292 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2665 LACNIC Region transit ASes present in the Internet Routing Table: 2536 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: 9257 Number of LACNIC addresses announced to Internet: 170648320 Equivalent to 10 /8s, 43 /16s and 227 /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: 34954 Total AfriNIC prefixes after maximum aggregation: 6836 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 48430 Unique aggregates announced from the AfriNIC address blocks: 16720 AfriNIC Region origin ASes present in the Internet Routing Table: 1962 AfriNIC Prefixes per ASN: 24.68 AfriNIC Region origin ASes announcing only one prefix: 714 AfriNIC Region transit ASes present in the Internet Routing Table: 384 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: 1328 Number of AfriNIC addresses announced to Internet: 104274432 Equivalent to 6 /8s, 55 /16s and 26 /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 13481 8729 115 CHINAMOBILE-CN China Mobile Communication 7545 6161 837 601 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4470 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3936 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3736 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3301 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3034 812 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 863 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2181 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 14392 40913 5393 AMAZON-02, US 11492 4736 319 806 CABLEONE, US 22773 3944 3045 315 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3678 1320 81 SHAW, CA 396982 3248 4039 451 GOOGLE-CLOUD-PLATFORM, US 174 3237 8760 863 COGENT-174, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3012 234 1735 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 7463 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 9009 3954 369 2212 M247, RO 20940 3907 3395 125 AKAMAI-ASN1, NL 12389 3120 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2415 172 1749 CDNEXT, GB 34984 2414 363 573 TELLCOM-AS, TR 203020 1965 230 913 HOSTROYALE, IN 8452 1623 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 12373 3278 575 UNINET, MX 10620 3494 473 1048 Telmex Colombia S.A., CO 13999 2540 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 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1225 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1182 371 22 Telefonica del Peru S.A.A., PE 22884 1059 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 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 1821 652 28 RAYA-AS, EG 36992 1507 1498 383 ETISALAT-MISR, EG 29571 1279 102 50 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 1078 523 46 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 14392 40913 5393 AMAZON-02, US 9808 13481 8729 115 CHINAMOBILE-CN China Mobile Communication 8151 12373 3278 575 UNINET, MX 12479 7463 1711 149 UNI2-AS, ES 7545 6161 837 601 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4736 319 806 CABLEONE, US 18403 4470 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 9009 3954 369 2212 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 13481 13366 CHINAMOBILE-CN China Mobile Communications Grou 8151 12373 11798 UNINET, MX 12479 7463 7314 UNI2-AS, ES 7545 6161 5560 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4470 4444 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4736 3930 CABLEONE, US 7552 3936 3909 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 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 /11:92 /12:298 /13:576 /14:1199 /15:2123 /16:13725 /17:8146 /18:13369 /19:24472 /20:44129 /21:51778 /22:112138 /23:103237 /24:624369 /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 6572 12373 UNINET, MX 12479 6427 7463 UNI2-AS, ES 11492 3551 4736 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3678 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2505 3944 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2448 14392 AMAZON-02, US 30036 2295 2636 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2212 3494 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 2:1516 3:930 4:10 5:4825 6:163 7:6 8:1543 9:6 11:172 12:1249 13:570 14:2620 15:400 16:303 17:386 18:901 20:571 21:4 22:188 23:7834 24:2656 25:2 27:2794 29:19 31:3357 32:30 33:1 34:84 35:266 36:4375 37:4542 38:9427 39:1063 40:280 41:4328 42:1966 43:2747 44:374 45:18986 46:5115 47:341 49:2018 50:2040 51:593 52:1609 54:373 55:1093 56:11 57:284 58:2267 59:1303 60:1187 61:2913 62:3036 63:1765 64:5623 65:2118 66:4859 67:3094 68:1084 69:3900 70:1038 71:629 72:2885 74:2824 75:1501 76:602 77:2784 78:1901 79:1760 80:2238 81:2080 82:3319 83:1453 84:1963 85:3480 86:1098 87:2118 88:1322 89:4496 90:808 91:8396 92:2791 93:2978 94:4153 95:4441 96:1464 97:312 98:951 99:762 100:71 101:1474 102:4091 103:32902 104:5319 105:777 106:879 107:2647 108:1216 109:4198 110:2254 111:3716 112:2604 113:1850 114:1991 115:2240 116:2094 117:2847 118:3062 119:1955 120:2220 121:1346 122:2787 123:2241 124:1720 125:2921 126:91 128:1562 129:958 130:1276 131:2126 132:782 133:461 134:1613 135:364 136:1482 137:1137 138:2791 139:1597 140:1608 141:1541 142:1907 143:2039 144:1261 145:613 146:2169 147:2111 148:2735 149:2902 150:1284 151:2534 152:2114 153:574 154:7457 155:2051 156:3451 157:2002 158:1435 159:2543 160:3554 161:1965 162:3917 163:2295 164:1908 165:2569 166:1560 167:2085 168:3807 169:776 170:5349 171:1004 172:4245 173:3405 174:902 175:1346 176:3789 177:4722 178:4148 179:2278 180:2749 181:4239 182:3684 183:2590 184:2057 185:21618 186:5399 187:4638 188:4285 189:4371 190:9676 191:1580 192:11380 193:9471 194:7786 195:5559 196:3281 197:3234 198:6093 199:8681 200:8075 201:6335 202:10408 203:10653 204:4552 205:3606 206:4494 207:3525 208:4271 209:5235 210:4686 211:2673 212:4681 213:3849 214:1039 215:52 216:6851 217:3323 218:1501 219:396 220:2148 221:1231 222:750 223:2957 End of report