IPv4 R&E Routing Table Report 23:05 GMT Sat 13 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: 999190 Prefixes after maximum aggregation (per Origin AS): 388053 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 493867 Number of IPv4 prefixes with a valid ROA: 569948 Number of IPv4 prefixes with an invalid ROA: 1055 Number of IPv4 prefixes with no ROA: 428187 Total ASes present in the Internet Routing Table: 77231 Prefixes per ASN: 12.94 Origin-only ASes present in the Internet Routing Table: 66166 Origin ASes announcing only one prefix: 27008 Transit ASes present in the Internet Routing Table: 11065 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: 1124 Number of instances of unregistered ASNs: 1154 Number of 32-bit ASNs allocated by the RIRs: 47403 Number of 32-bit ASNs visible in the Routing Table: 38931 Prefixes from 32-bit ASNs in the Routing Table: 210461 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: 444 Number of addresses announced to Internet: 3107444480 Equivalent to 185 /8s, 55 /16s and 215 /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: 325123 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 267720 Total APNIC prefixes after maximum aggregation: 79171 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 257814 Unique aggregates announced from the APNIC address blocks: 105616 APNIC Region origin ASes present in the Internet Routing Table: 14765 APNIC Prefixes per ASN: 17.46 APNIC Region origin ASes announcing only one prefix: 4478 APNIC Region transit ASes present in the Internet Routing Table: 1989 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: 10337 Number of APNIC addresses announced to Internet: 750109952 Equivalent to 44 /8s, 181 /16s and 197 /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: 292343 Total ARIN prefixes after maximum aggregation: 133400 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293648 Unique aggregates announced from the ARIN address blocks: 142524 ARIN Region origin ASes present in the Internet Routing Table: 19277 ARIN Prefixes per ASN: 15.23 ARIN Region origin ASes announcing only one prefix: 7067 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: 5330 Number of ARIN addresses announced to Internet: 1349473792 Equivalent to 80 /8s, 111 /16s and 86 /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: 278316 Total RIPE prefixes after maximum aggregation: 137754 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277607 Unique aggregates announced from the RIPE address blocks: 179858 RIPE Region origin ASes present in the Internet Routing Table: 29044 RIPE Prefixes per ASN: 9.56 RIPE Region origin ASes announcing only one prefix: 12102 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: 12695 Number of RIPE addresses announced to Internet: 732224000 Equivalent to 43 /8s, 164 /16s and 218 /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: 124695 Total LACNIC prefixes after maximum aggregation: 30177 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 120919 Unique aggregates announced from the LACNIC address blocks: 49433 LACNIC Region origin ASes present in the Internet Routing Table: 11285 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2649 LACNIC Region transit ASes present in the Internet Routing Table: 2545 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: 9246 Number of LACNIC addresses announced to Internet: 170721280 Equivalent to 10 /8s, 45 /16s and 0 /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: 34992 Total AfriNIC prefixes after maximum aggregation: 6815 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 48758 Unique aggregates announced from the AfriNIC address blocks: 16044 AfriNIC Region origin ASes present in the Internet Routing Table: 1960 AfriNIC Prefixes per ASN: 24.88 AfriNIC Region origin ASes announcing only one prefix: 712 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: 1323 Number of AfriNIC addresses announced to Internet: 104655104 Equivalent to 6 /8s, 60 /16s and 233 /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 4457 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3937 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3683 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3305 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3015 812 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2915 862 511 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 14322 40858 5357 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 3229 3858 445 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 2993 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 1897 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 3494 473 1048 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 1369 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 51 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 567 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 14322 40858 5357 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 4457 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 4457 4431 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 /15:2123 /16:13727 /17:8150 /18:13385 /19:24449 /20:44163 /21:51805 /22:112223 /23:103151 /24:623778 /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 2426 14322 AMAZON-02, US 30036 2309 2651 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) ---------------------------------------------- 1:2422 2:1514 3:924 4:10 5:4830 6:157 7:6 8:1542 9:4 11:172 12:1251 13:557 14:2620 15:398 16:303 17:385 18:903 20:570 21:4 22:188 23:7823 24:2657 25:2 27:2793 29:19 31:3364 32:30 33:1 34:84 35:271 36:4341 37:4538 38:9400 39:1030 40:282 41:4338 42:1961 43:2756 44:373 45:19033 46:5103 47:343 49:2013 50:2049 51:592 52:1610 54:369 55:1111 56:11 57:283 58:2279 59:1301 60:1182 61:2916 62:3048 63:1765 64:5612 65:2133 66:4833 67:3092 68:1078 69:3898 70:1038 71:626 72:2878 74:2815 75:1502 76:599 77:2783 78:1899 79:1762 80:2239 81:2078 82:3307 83:1453 84:1965 85:3487 86:1100 87:2117 88:1304 89:4496 90:804 91:8402 92:2781 93:2973 94:4153 95:4435 96:1448 97:312 98:947 99:751 100:71 101:1474 102:4081 103:32925 104:5287 105:777 106:877 107:2653 108:1214 109:4199 110:2249 111:3658 112:2534 113:1844 114:1993 115:2248 116:2092 117:2808 118:3060 119:1957 120:2201 121:1345 122:2785 123:2239 124:1717 125:2921 126:91 128:1555 129:956 130:1276 131:2143 132:783 133:458 134:1596 135:365 136:1485 137:1135 138:2822 139:1599 140:1624 141:1535 142:1911 143:2037 144:1251 145:608 146:2174 147:2107 148:2729 149:2911 150:1278 151:2416 152:2115 153:563 154:7500 155:2017 156:3579 157:1999 158:1420 159:2554 160:3607 161:1950 162:3912 163:2296 164:1915 165:2574 166:1560 167:2078 168:3828 169:776 170:5363 171:1007 172:4229 173:3404 174:902 175:1351 176:3798 177:4736 178:4110 179:2304 180:2751 181:4208 182:3706 183:2534 184:2046 185:21627 186:5431 187:4627 188:4275 189:4363 190:9667 191:1568 192:11368 193:9458 194:7792 195:5552 196:3277 197:3234 198:6100 199:8660 200:8102 201:6345 202:10395 203:10659 204:4561 205:3619 206:4493 207:3517 208:4271 209:5171 210:4685 211:2666 212:4672 213:3849 214:1038 215:52 216:6846 217:3310 218:1460 219:396 220:2154 221:1217 222:750 223:2874 End of report