IPv4 R&E Routing Table Report 23:05 GMT Thu 28 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: 995110 Prefixes after maximum aggregation (per Origin AS): 387088 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 492234 Number of IPv4 prefixes with a valid ROA: 565535 Number of IPv4 prefixes with an invalid ROA: 760 Number of IPv4 prefixes with no ROA: 428815 Total ASes present in the Internet Routing Table: 77167 Prefixes per ASN: 12.90 Origin-only ASes present in the Internet Routing Table: 66112 Origin ASes announcing only one prefix: 26993 Transit ASes present in the Internet Routing Table: 11055 Transit-only ASes present in the Internet Routing Table: 547 Paths with bogon ASNs present in the IPv4 Routing Table: 31 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: 1115 Number of instances of unregistered ASNs: 1156 Number of 32-bit ASNs allocated by the RIRs: 47273 Number of 32-bit ASNs visible in the Routing Table: 38842 Prefixes from 32-bit ASNs in the Routing Table: 209301 Number of bogon 32-bit ASNs visible in the Routing Table: 96 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 447 Number of addresses announced to Internet: 3107219712 Equivalent to 185 /8s, 52 /16s and 105 /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: 324039 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265861 Total APNIC prefixes after maximum aggregation: 78726 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256332 Unique aggregates announced from the APNIC address blocks: 105222 APNIC Region origin ASes present in the Internet Routing Table: 14739 APNIC Prefixes per ASN: 17.39 APNIC Region origin ASes announcing only one prefix: 4467 APNIC Region transit ASes present in the Internet Routing Table: 1991 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: 10307 Number of APNIC addresses announced to Internet: 750059264 Equivalent to 44 /8s, 180 /16s and 255 /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: 291190 Total ARIN prefixes after maximum aggregation: 132976 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293179 Unique aggregates announced from the ARIN address blocks: 142330 ARIN Region origin ASes present in the Internet Routing Table: 19259 ARIN Prefixes per ASN: 15.22 ARIN Region origin ASes announcing only one prefix: 7068 ARIN Region transit ASes present in the Internet Routing Table: 1921 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: 5301 Number of ARIN addresses announced to Internet: 1349537024 Equivalent to 80 /8s, 112 /16s and 77 /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: 277717 Total RIPE prefixes after maximum aggregation: 137348 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277011 Unique aggregates announced from the RIPE address blocks: 179380 RIPE Region origin ASes present in the Internet Routing Table: 29031 RIPE Prefixes per ASN: 9.54 RIPE Region origin ASes announcing only one prefix: 12095 RIPE Region transit ASes present in the Internet Routing Table: 4027 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: 12668 Number of RIPE addresses announced to Internet: 732161536 Equivalent to 43 /8s, 163 /16s and 230 /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: 124350 Total LACNIC prefixes after maximum aggregation: 30509 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 120583 Unique aggregates announced from the LACNIC address blocks: 49356 LACNIC Region origin ASes present in the Internet Routing Table: 11284 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2648 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: 9243 Number of LACNIC addresses announced to Internet: 170737920 Equivalent to 10 /8s, 45 /16s and 65 /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: 34877 Total AfriNIC prefixes after maximum aggregation: 6803 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 47558 Unique aggregates announced from the AfriNIC address blocks: 15560 AfriNIC Region origin ASes present in the Internet Routing Table: 1958 AfriNIC Prefixes per ASN: 24.29 AfriNIC Region origin ASes announcing only one prefix: 715 AfriNIC Region transit ASes present in the Internet Routing Table: 380 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: 1323 Number of AfriNIC addresses announced to Internet: 104480512 Equivalent to 6 /8s, 58 /16s and 63 /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 12918 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 4395 348 27 FPT-AS-AP FPT Telecom Company, VN 7552 3943 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3664 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 2916 864 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2174 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 14035 40852 5380 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 180 ASN-CXA-ALL-CCI-22773-RDC, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3219 3858 437 GOOGLE-CLOUD-PLATFORM, US 174 3190 8759 845 COGENT-174, US 4155 2959 230 1749 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 7502 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3907 3395 125 AKAMAI-ASN1, NL 9009 3864 366 2181 M247, RO 12389 3117 2315 865 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2404 361 585 TELLCOM-AS, TR 212238 2353 168 1717 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 12295 3272 572 UNINET, MX 10620 3484 472 1049 Telmex Colombia S.A., CO 13999 2531 511 348 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 1180 371 22 Telefonica del Peru S.A.A., PE 22884 1054 67 377 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 2487 55 TIM SA, BR 11172 918 148 66 Alestra, S. de R.L. de C.V., MX 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 1792 660 28 RAYA-AS, EG 29571 1498 94 37 ORANGE-COTE-IVOIRE, CI 36992 1420 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 972 521 42 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 561 82 3 KENET-AS, KE 15399 548 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 14035 40852 5380 AMAZON-02, US 9808 12918 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12295 3272 572 UNINET, MX 12479 7502 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 4395 348 27 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 12918 12804 CHINAMOBILE-CN China Mobile Communications Grou 8151 12295 11723 UNINET, MX 12479 7502 7352 UNI2-AS, ES 7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4395 4368 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 /16:13729 /17:8134 /18:13391 /19:24452 /20:44162 /21:51691 /22:112084 /23:102998 /24:620109 /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 6500 12295 UNINET, MX 12479 6453 7502 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 2389 14035 AMAZON-02, US 30036 2319 2662 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2204 3484 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 3:922 4:10 5:4822 6:156 7:6 8:1542 9:4 11:172 12:1255 13:491 14:2604 15:390 16:285 17:386 18:900 20:565 21:4 22:188 23:7814 24:2660 25:2 27:2802 29:19 31:3359 32:29 33:1 34:83 35:262 36:4305 37:4525 38:9345 39:993 40:264 41:4303 42:1942 43:2736 44:380 45:18821 46:5101 47:342 49:1987 50:2058 51:591 52:1571 54:348 55:1111 56:11 57:283 58:2278 59:1290 60:1182 61:2899 62:3031 63:1774 64:5595 65:2141 66:4798 67:3090 68:1066 69:3878 70:1037 71:628 72:2860 74:2799 75:1505 76:601 77:2776 78:1896 79:1743 80:2228 81:2081 82:3252 83:1444 84:1916 85:3474 86:1127 87:2120 88:1318 89:4472 90:791 91:8414 92:2767 93:2981 94:4151 95:4424 96:1445 97:310 98:952 99:721 100:71 101:1470 102:3960 103:32848 104:5311 105:759 106:876 107:2657 108:1232 109:4188 110:2242 111:3583 112:2476 113:1835 114:1977 115:2186 116:2095 117:2703 118:3019 119:1948 120:2201 121:1327 122:2801 123:2222 124:1708 125:2907 126:91 128:1553 129:959 130:1277 131:2094 132:786 133:459 134:1619 135:366 136:1479 137:1123 138:2807 139:1594 140:1613 141:1543 142:1903 143:2012 144:1205 145:603 146:2176 147:2103 148:2720 149:2903 150:1264 151:2416 152:2104 153:563 154:7236 155:1970 156:3165 157:1964 158:1475 159:2540 160:3572 161:1934 162:3899 163:2292 164:1907 165:2516 166:1557 167:2072 168:3852 169:777 170:5254 171:995 172:4230 173:3403 174:904 175:1324 176:3788 177:4799 178:4023 179:2312 180:2730 181:4182 182:3624 183:2365 184:2054 185:21609 186:5301 187:4592 188:4311 189:4348 190:9418 191:1537 192:11350 193:9472 194:7785 195:5654 196:3293 197:3231 198:6095 199:8641 200:8083 201:6405 202:10422 203:10636 204:4560 205:3632 206:4466 207:3524 208:4269 209:5150 210:4664 211:2651 212:4626 213:3827 214:1039 215:51 216:6808 217:3294 218:1451 219:393 220:2157 221:1208 222:747 223:2826 End of report