IPv4 R&E Routing Table Report 23:05 GMT Fri 12 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: 999189 Prefixes after maximum aggregation (per Origin AS): 388095 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 493943 Number of IPv4 prefixes with a valid ROA: 569889 Number of IPv4 prefixes with an invalid ROA: 1048 Number of IPv4 prefixes with no ROA: 428252 Total ASes present in the Internet Routing Table: 77220 Prefixes per ASN: 12.94 Origin-only ASes present in the Internet Routing Table: 66142 Origin ASes announcing only one prefix: 27006 Transit ASes present in the Internet Routing Table: 11078 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: 4.8 Max AS path length visible: 58 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1126 Number of instances of unregistered ASNs: 1156 Number of 32-bit ASNs allocated by the RIRs: 47386 Number of 32-bit ASNs visible in the Routing Table: 38919 Prefixes from 32-bit ASNs in the Routing Table: 210465 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: 443 Number of addresses announced to Internet: 3107533056 Equivalent to 185 /8s, 57 /16s and 49 /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: 325054 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 267652 Total APNIC prefixes after maximum aggregation: 79144 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 257744 Unique aggregates announced from the APNIC address blocks: 105601 APNIC Region origin ASes present in the Internet Routing Table: 14753 APNIC Prefixes per ASN: 17.47 APNIC Region origin ASes announcing only one prefix: 4478 APNIC Region transit ASes present in the Internet Routing Table: 1992 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: 10326 Number of APNIC addresses announced to Internet: 750223360 Equivalent to 44 /8s, 183 /16s and 128 /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: 292424 Total ARIN prefixes after maximum aggregation: 133443 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293765 Unique aggregates announced from the ARIN address blocks: 142605 ARIN Region origin ASes present in the Internet Routing Table: 19274 ARIN Prefixes per ASN: 15.24 ARIN Region origin ASes announcing only one prefix: 7065 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: 5328 Number of ARIN addresses announced to Internet: 1349480704 Equivalent to 80 /8s, 111 /16s and 113 /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: 278336 Total RIPE prefixes after maximum aggregation: 137747 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277621 Unique aggregates announced from the RIPE address blocks: 179848 RIPE Region origin ASes present in the Internet Routing Table: 29045 RIPE Prefixes per ASN: 9.56 RIPE Region origin ASes announcing only one prefix: 12104 RIPE Region transit ASes present in the Internet Routing Table: 4018 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: 12692 Number of RIPE addresses announced to Internet: 732205568 Equivalent to 43 /8s, 164 /16s and 146 /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: 124619 Total LACNIC prefixes after maximum aggregation: 30213 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120816 Unique aggregates announced from the LACNIC address blocks: 49456 LACNIC Region origin ASes present in the Internet Routing Table: 11287 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2646 LACNIC Region transit ASes present in the Internet Routing Table: 2551 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: 9248 Number of LACNIC addresses announced to Internet: 170716160 Equivalent to 10 /8s, 44 /16s and 236 /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: 35032 Total AfriNIC prefixes after maximum aggregation: 6811 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 48800 Unique aggregates announced from the AfriNIC address blocks: 16042 AfriNIC Region origin ASes present in the Internet Routing Table: 1960 AfriNIC Prefixes per ASN: 24.90 AfriNIC Region origin ASes announcing only one prefix: 713 AfriNIC Region transit ASes present in the Internet Routing Table: 382 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: 1325 Number of AfriNIC addresses announced to Internet: 104663296 Equivalent to 6 /8s, 61 /16s and 9 /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 13267 8729 114 CHINAMOBILE-CN China Mobile Communication 7545 6137 838 614 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4448 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3937 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3678 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3305 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3016 812 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2920 863 509 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 14335 40861 5371 AMAZON-02, US 11492 4734 314 823 CABLEONE, US 22773 3961 3046 317 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3668 1320 81 SHAW, CA 174 3250 8762 878 COGENT-174, US 396982 3227 3858 443 GOOGLE-CLOUD-PLATFORM, US 749 3219 54766 2470 DNIC-AS-00749, US 4155 2994 233 1735 USDA-1, US 16625 2905 1231 2162 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 7484 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3907 3395 125 AKAMAI-ASN1, NL 9009 3902 366 2192 M247, RO 12389 3121 2316 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2418 172 1751 CDNEXT, GB 34984 2414 363 573 TELLCOM-AS, TR 203020 1895 226 876 HOSTROYALE, IN 8452 1611 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 12370 3280 573 UNINET, MX 10620 3493 473 1047 Telmex Colombia S.A., CO 13999 2543 511 348 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1375 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1216 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1179 371 22 Telefonica del Peru S.A.A., PE 22884 1059 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1009 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 1823 652 28 RAYA-AS, EG 36992 1504 1498 379 ETISALAT-MISR, EG 29571 1336 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 1066 523 46 Vodafone-, EG 20011 576 154 212 NTT-DATA-Inc, 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 14335 40861 5371 AMAZON-02, US 9808 13267 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12370 3280 573 UNINET, MX 12479 7484 1711 149 UNI2-AS, ES 7545 6137 838 614 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4734 314 823 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4448 347 26 FPT-AS-AP FPT Telecom Company, VN 22773 3961 3046 317 ASN-CXA-ALL-CCI-22773-RDC, US 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 13267 13153 CHINAMOBILE-CN China Mobile Communications Grou 8151 12370 11797 UNINET, MX 12479 7484 7335 UNI2-AS, ES 7545 6137 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4448 4422 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4734 3911 CABLEONE, US 7552 3937 3910 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 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, 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 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 /15:2121 /16:13726 /17:8145 /18:13385 /19:24454 /20:44168 /21:51810 /22:112245 /23:103154 /24:623745 /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 6569 12370 UNINET, MX 12479 6445 7484 UNI2-AS, ES 11492 3550 4734 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3465 3668 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2505 3961 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2439 14335 AMAZON-02, US 30036 2308 2650 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3493 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 2:1514 3:927 4:10 5:4826 6:157 7:6 8:1544 9:4 11:172 12:1251 13:558 14:2620 15:398 16:303 17:386 18:902 20:570 21:4 22:188 23:7822 24:2657 25:2 27:2802 29:19 31:3361 32:30 33:1 34:84 35:271 36:4338 37:4537 38:9403 39:1030 40:282 41:4338 42:1955 43:2754 44:373 45:19017 46:5105 47:343 49:2013 50:2050 51:592 52:1606 54:369 55:1111 56:11 57:283 58:2278 59:1301 60:1182 61:2917 62:3048 63:1765 64:5610 65:2133 66:4827 67:3093 68:1077 69:3896 70:1038 71:626 72:2877 74:2815 75:1502 76:600 77:2783 78:1896 79:1767 80:2233 81:2079 82:3307 83:1454 84:1965 85:3485 86:1099 87:2118 88:1320 89:4494 90:804 91:8397 92:2781 93:2977 94:4154 95:4430 96:1448 97:312 98:947 99:751 100:71 101:1472 102:4075 103:32890 104:5288 105:777 106:877 107:2654 108:1218 109:4197 110:2249 111:3672 112:2534 113:1844 114:1993 115:2248 116:2092 117:2808 118:3060 119:1957 120:2201 121:1346 122:2787 123:2239 124:1715 125:2921 126:91 128:1558 129:956 130:1275 131:2140 132:781 133:461 134:1596 135:365 136:1485 137:1133 138:2814 139:1601 140:1624 141:1540 142:1907 143:2037 144:1251 145:608 146:2175 147:2107 148:2691 149:2913 150:1280 151:2415 152:2115 153:563 154:7502 155:2033 156:3581 157:1996 158:1423 159:2555 160:3596 161:1950 162:3911 163:2297 164:1920 165:2583 166:1560 167:2079 168:3857 169:775 170:5356 171:1007 172:4229 173:3404 174:902 175:1352 176:3796 177:4744 178:4110 179:2318 180:2748 181:4205 182:3703 183:2529 184:2048 185:21624 186:5396 187:4625 188:4275 189:4365 190:9670 191:1548 192:11369 193:9466 194:7797 195:5555 196:3289 197:3245 198:6096 199:8659 200:8111 201:6335 202:10392 203:10658 204:4563 205:3626 206:4494 207:3523 208:4271 209:5173 210:4686 211:2666 212:4680 213:3848 214:1042 215:52 216:6846 217:3308 218:1461 219:396 220:2149 221:1217 222:750 223:2876 End of report