IPv4 R&E Routing Table Report 23:05 GMT Sun 16 Nov, 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: 1010695 Prefixes after maximum aggregation (per Origin AS): 391930 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 501180 Number of IPv4 prefixes with a valid ROA: 586590 Number of IPv4 prefixes with an invalid ROA: 835 Number of IPv4 prefixes with no ROA: 423270 Total ASes present in the Internet Routing Table: 77448 Prefixes per ASN: 13.05 Origin-only ASes present in the Internet Routing Table: 66356 Origin ASes announcing only one prefix: 27085 Transit ASes present in the Internet Routing Table: 11092 Transit-only ASes present in the Internet Routing Table: 548 Paths with bogon ASNs present in the IPv4 Routing Table: 28 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 968 Number of instances of unregistered ASNs: 997 Number of 32-bit ASNs allocated by the RIRs: 48012 Number of 32-bit ASNs visible in the Routing Table: 39274 Prefixes from 32-bit ASNs in the Routing Table: 215904 Number of bogon 32-bit ASNs visible in the Routing Table: 76 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 408 Number of addresses announced to Internet: 3102945280 Equivalent to 184 /8s, 243 /16s and 48 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 331469 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271540 Total APNIC prefixes after maximum aggregation: 80331 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 261049 Unique aggregates announced from the APNIC address blocks: 105859 APNIC Region origin ASes present in the Internet Routing Table: 14847 APNIC Prefixes per ASN: 17.58 APNIC Region origin ASes announcing only one prefix: 4503 APNIC Region transit ASes present in the Internet Routing Table: 2007 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10425 Number of APNIC addresses announced to Internet: 748507904 Equivalent to 44 /8s, 157 /16s and 83 /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: 296645 Total ARIN prefixes after maximum aggregation: 133648 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296601 Unique aggregates announced from the ARIN address blocks: 145322 ARIN Region origin ASes present in the Internet Routing Table: 19349 ARIN Prefixes per ASN: 15.33 ARIN Region origin ASes announcing only one prefix: 7115 ARIN Region transit ASes present in the Internet Routing Table: 1928 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5404 Number of ARIN addresses announced to Internet: 1344892160 Equivalent to 80 /8s, 41 /16s and 109 /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: 281257 Total RIPE prefixes after maximum aggregation: 139656 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281707 Unique aggregates announced from the RIPE address blocks: 182680 RIPE Region origin ASes present in the Internet Routing Table: 29092 RIPE Prefixes per ASN: 9.68 RIPE Region origin ASes announcing only one prefix: 12089 RIPE Region transit ASes present in the Internet Routing Table: 4039 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12804 Number of RIPE addresses announced to Internet: 735430400 Equivalent to 43 /8s, 213 /16s and 199 /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: 125007 Total LACNIC prefixes after maximum aggregation: 30769 LACNIC Deaggregation factor: 4.06 Prefixes being announced from the LACNIC address blocks: 121071 Unique aggregates announced from the LACNIC address blocks: 49570 LACNIC Region origin ASes present in the Internet Routing Table: 11309 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2659 LACNIC Region transit ASes present in the Internet Routing Table: 2548 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9293 Number of LACNIC addresses announced to Internet: 170793472 Equivalent to 10 /8s, 46 /16s and 26 /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: 35278 Total AfriNIC prefixes after maximum aggregation: 6862 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 49859 Unique aggregates announced from the AfriNIC address blocks: 17392 AfriNIC Region origin ASes present in the Internet Routing Table: 1983 AfriNIC Prefixes per ASN: 25.14 AfriNIC Region origin ASes announcing only one prefix: 719 AfriNIC Region transit ASes present in the Internet Routing Table: 378 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1348 Number of AfriNIC addresses announced to Internet: 103100928 Equivalent to 6 /8s, 37 /16s and 50 /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 13390 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6091 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4534 539 318 BBIL-AP BHARTI Airtel Ltd., IN 18403 4378 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3974 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3719 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3316 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2954 865 510 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2485 272 1919 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14250 37283 5391 AMAZON-02, US 11492 4787 317 804 CABLEONE, US 22773 4666 3092 383 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3287 4827 472 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2865 1224 2146 AKAMAI-AS, US 36352 2849 231 912 AS-COLOCROSSING, US 30036 2663 367 288 MEDIACOM-ENTERPRISE-BUSINESS, 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 7290 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4024 381 2288 M247, RO 20940 3852 3394 124 AKAMAI-ASN1, NL 12389 3144 2317 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2478 175 1785 CDNEXT, GB 34984 2417 363 575 TELLCOM-AS, TR 8452 1687 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1486 169 856 HOSTROYALE, IN 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 12546 3315 576 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2505 511 345 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1255 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1022 2486 56 TIM SA, BR 18881 914 1127 31 TELEFONICA BRASIL S.A, 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 1854 630 32 RAYA-AS, EG 36992 1680 1509 397 ETISALAT-MISR, EG 24863 1266 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1086 1112 11 MOBINIL, EG 36935 1077 520 31 Vodafone-, EG 29571 1031 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 557 82 3 KENET-AS, KE 15399 552 57 56 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 14250 37283 5391 AMAZON-02, US 9808 13390 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12546 3315 576 UNINET, MX 12479 7290 1711 149 UNI2-AS, ES 7545 6091 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4787 317 804 CABLEONE, US 22773 4666 3092 383 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4534 539 318 BBIL-AP BHARTI Airtel Ltd., IN 18403 4378 347 24 FPT-AS-AP FPT Telecom Company, 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 13390 13273 CHINAMOBILE-CN China Mobile Communications Grou 8151 12546 11970 UNINET, MX 12479 7290 7141 UNI2-AS, ES 7545 6091 5503 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4378 4354 FPT-AS-AP FPT Telecom Company, VN 22773 4666 4283 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4534 4216 BBIL-AP BHARTI Airtel Ltd., IN 11492 4787 3983 CABLEONE, US 7552 3974 3946 VIETEL-AS-AP Viettel Group, VN 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 3737 AS-PTD, 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 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, 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 23.159.56.0/24 Origin: 174 COGENT-174, US 23.159.56.0/24 Transit: 6453 AS6453, 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 /8:18 /9:14 /10:41 /11:94 /12:298 /13:578 /14:1193 /15:2090 /16:13643 /17:8147 /18:13407 /19:24614 /20:44329 /21:51859 /22:112552 /23:104688 /24:633130 /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 6750 12546 UNINET, MX 12479 6232 7290 UNI2-AS, ES 11492 3600 4787 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 2996 4666 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2425 14250 AMAZON-02, US 30036 2319 2663 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3456 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) ---------------------------------------------- 1:2447 2:1532 3:961 4:10 5:4968 6:189 7:6 8:1514 9:6 11:172 12:1233 13:564 14:2599 15:410 16:303 17:387 18:905 20:583 21:4 22:188 23:8032 24:2559 25:2 27:2781 29:19 31:3371 32:31 33:1 34:84 35:274 36:4548 37:4561 38:9302 39:1174 40:463 41:4420 42:1929 43:2859 44:401 45:19255 46:5128 47:374 49:2158 50:2054 51:592 52:1623 54:352 55:1108 56:11 57:288 58:2314 59:1323 60:1187 61:3029 62:3086 63:1734 64:5922 65:2116 66:5877 67:3213 68:1492 69:4123 70:1038 71:624 72:3019 74:2898 75:1516 76:601 77:2752 78:1905 79:1784 80:2284 81:2109 82:3715 83:1467 84:2017 85:3579 86:1100 87:2135 88:1335 89:4595 90:838 91:8390 92:2831 93:2987 94:4155 95:4543 96:1459 97:311 98:954 99:749 100:68 101:1345 102:4246 103:32818 104:5461 105:772 106:911 107:2799 108:1192 109:4240 110:2257 111:3865 112:2754 113:1896 114:2083 115:2199 116:2115 117:3097 118:3043 119:2044 120:2344 121:1503 122:2856 123:2264 124:1644 125:2926 126:125 128:1572 129:960 130:1491 131:2241 132:779 133:462 134:1627 135:365 136:1495 137:1133 138:2858 139:1593 140:1704 141:1562 142:2255 143:2129 144:1317 145:634 146:2179 147:2115 148:2780 149:2849 150:1293 151:2652 152:2265 153:598 154:8160 155:2237 156:3666 157:2213 158:1409 159:2658 160:3644 161:2003 162:3987 163:2325 164:1955 165:2577 166:1323 167:2122 168:3828 169:782 170:5423 171:1107 172:4467 173:3414 174:910 175:1354 176:3759 177:4690 178:4294 179:2278 180:2902 181:4343 182:3805 183:2551 184:2066 185:21656 186:5431 187:4717 188:4395 189:4426 190:9680 191:1511 192:11403 193:9503 194:7833 195:5590 196:3230 197:3326 198:6062 199:6086 200:8054 201:6370 202:10391 203:10550 204:4621 205:3651 206:4360 207:3720 208:4266 209:5325 210:4708 211:2647 212:4887 213:3993 214:1041 215:54 216:7113 217:3342 218:1573 219:402 220:2200 221:1265 222:762 223:3118 End of report