IPv4 R&E Routing Table Report 23:05 GMT Thu 01 Jan, 2026 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: 1021707 Prefixes after maximum aggregation (per Origin AS): 393836 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505988 Number of IPv4 prefixes with a valid ROA: 609033 Number of IPv4 prefixes with an invalid ROA: 622 Number of IPv4 prefixes with no ROA: 412052 Total ASes present in the Internet Routing Table: 77609 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66504 Origin ASes announcing only one prefix: 27076 Transit ASes present in the Internet Routing Table: 11105 Transit-only ASes present in the Internet Routing Table: 568 Paths with bogon ASNs present in the IPv4 Routing Table: 40 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: 961 Number of instances of unregistered ASNs: 990 Number of 32-bit ASNs allocated by the RIRs: 48313 Number of 32-bit ASNs visible in the Routing Table: 39505 Prefixes from 32-bit ASNs in the Routing Table: 220090 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 540 Number of addresses announced to Internet: 3104550144 Equivalent to 185 /8s, 11 /16s and 173 /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: 333919 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277561 Total APNIC prefixes after maximum aggregation: 80823 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 264221 Unique aggregates announced from the APNIC address blocks: 106432 APNIC Region origin ASes present in the Internet Routing Table: 14913 APNIC Prefixes per ASN: 17.72 APNIC Region origin ASes announcing only one prefix: 4509 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: 10497 Number of APNIC addresses announced to Internet: 753051136 Equivalent to 44 /8s, 226 /16s and 166 /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: 298696 Total ARIN prefixes after maximum aggregation: 134644 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298942 Unique aggregates announced from the ARIN address blocks: 145685 ARIN Region origin ASes present in the Internet Routing Table: 19359 ARIN Prefixes per ASN: 15.44 ARIN Region origin ASes announcing only one prefix: 7070 ARIN Region transit ASes present in the Internet Routing Table: 1925 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: 5418 Number of ARIN addresses announced to Internet: 1342473984 Equivalent to 80 /8s, 4 /16s and 135 /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: 282572 Total RIPE prefixes after maximum aggregation: 139951 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283670 Unique aggregates announced from the RIPE address blocks: 184147 RIPE Region origin ASes present in the Internet Routing Table: 29117 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12081 RIPE Region transit ASes present in the Internet Routing Table: 4053 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: 12891 Number of RIPE addresses announced to Internet: 735107072 Equivalent to 43 /8s, 208 /16s and 216 /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: 125659 Total LACNIC prefixes after maximum aggregation: 30845 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121450 Unique aggregates announced from the LACNIC address blocks: 49770 LACNIC Region origin ASes present in the Internet Routing Table: 11330 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2678 LACNIC Region transit ASes present in the Internet Routing Table: 2542 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9331 Number of LACNIC addresses announced to Internet: 170477568 Equivalent to 10 /8s, 41 /16s and 72 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + 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: 36258 Total AfriNIC prefixes after maximum aggregation: 6919 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 52884 Unique aggregates announced from the AfriNIC address blocks: 19499 AfriNIC Region origin ASes present in the Internet Routing Table: 2004 AfriNIC Prefixes per ASN: 26.39 AfriNIC Region origin ASes announcing only one prefix: 738 AfriNIC Region transit ASes present in the Internet Routing Table: 382 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: 1368 Number of AfriNIC addresses announced to Internet: 103137024 Equivalent to 6 /8s, 37 /16s and 191 /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 13382 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6035 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4650 542 334 BBIL-AP BHARTI Airtel Ltd., IN 18403 4349 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4056 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3730 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3400 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3327 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3114 195 612 LCS-AS-AP LARUS Limited, HK 24560 2956 865 496 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 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 14029 38462 5428 AMAZON-02, US 22773 4748 3098 374 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4691 311 946 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 82 SHAW, CA 396982 3319 4867 493 GOOGLE-CLOUD-PLATFORM, US 749 3145 54729 2396 DNIC-AS-00749, US 174 3043 8770 865 COGENT-174, US 16625 2858 1226 2137 AKAMAI-AS, US 36352 2704 222 887 AS-COLOCROSSING, 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 7276 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3949 368 2273 M247, RO 20940 3831 3393 110 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2563 182 1864 CDNEXT, GB 34984 2421 371 574 TELLCOM-AS, TR 8452 1702 1852 14 TE-AS TE-AS, EG 203020 1615 242 783 HOSTROYALE, IN 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 12648 3293 592 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2480 506 350 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1370 2430 270 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1260 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1013 2486 56 TIM SA, BR 18881 905 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 1982 638 33 RAYA-AS, EG 36992 1847 1534 341 ETISALAT-MISR, EG 24863 1266 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1100 1096 13 MOBINIL, EG 36935 1097 523 46 Vodafone-, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 553 82 3 KENET-AS, KE 15399 548 56 55 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 14029 38462 5428 AMAZON-02, US 9808 13382 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12648 3293 592 UNINET, MX 12479 7276 1711 149 UNI2-AS, ES 7545 6035 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4748 3098 374 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4691 311 946 CABLEONE, US 9498 4650 542 334 BBIL-AP BHARTI Airtel Ltd., IN 18403 4349 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 13382 13262 CHINAMOBILE-CN China Mobile Communications Grou 8151 12648 12056 UNINET, MX 12479 7276 7127 UNI2-AS, ES 7545 6035 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4748 4374 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4349 4325 FPT-AS-AP FPT Telecom Company, VN 9498 4650 4316 BBIL-AP BHARTI Airtel Ltd., IN 7552 4056 4027 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE, US 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 210097 UNALLOCATED 5.231.245.0/24 209874 TECHTIDE, PT 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 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 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, 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 /11:93 /12:299 /13:577 /14:1197 /15:2090 /16:13648 /17:8169 /18:13443 /19:24712 /20:44699 /21:51915 /22:112883 /23:105593 /24:642318 /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 6852 12648 UNINET, MX 12479 6207 7276 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3536 4691 CABLEONE, US 6327 3478 3690 SHAW, CA 22773 3053 4748 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2466 14029 AMAZON-02, US 30036 2307 2650 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 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) ---------------------------------------------- 1:2465 2:1520 3:980 4:10 5:4994 6:187 7:6 8:1507 9:14 11:172 12:1234 13:611 14:2629 15:418 16:275 17:383 18:914 20:591 21:4 22:188 23:8082 24:2561 25:2 27:2800 29:19 31:3390 32:31 33:1 34:84 35:286 36:4639 37:4517 38:9909 39:1223 40:434 41:4480 42:1916 43:2954 44:414 45:19669 46:4996 47:396 49:2163 50:2050 51:598 52:1251 54:229 55:1126 56:11 57:306 58:2315 59:1353 60:1171 61:3089 62:3094 63:1764 64:6105 65:2128 66:5997 67:3259 68:1503 69:4205 70:1027 71:616 72:3080 74:2952 75:1517 76:600 77:2759 78:1928 79:1783 80:2301 81:2080 82:3941 83:1469 84:2024 85:3665 86:1098 87:2196 88:1358 89:4632 90:833 91:8426 92:2826 93:3014 94:4266 95:4547 96:1448 97:311 98:957 99:791 100:68 101:1331 102:4335 103:32883 104:5464 105:770 106:920 107:2807 108:1211 109:4244 110:2309 111:4004 112:2836 113:1966 114:2095 115:2268 116:2172 117:3241 118:2977 119:2108 120:2423 121:1505 122:2951 123:2283 124:1654 125:2966 126:125 128:1576 129:943 130:1538 131:2270 132:764 133:462 134:1625 135:539 136:1495 137:1210 138:2982 139:1598 140:1772 141:1557 142:2430 143:2125 144:1469 145:627 146:2185 147:2139 148:2770 149:2923 150:1328 151:2591 152:2248 153:844 154:9507 155:2303 156:4517 157:2246 158:1480 159:2729 160:3658 161:1992 162:3997 163:2329 164:1963 165:2653 166:1305 167:2198 168:3909 169:803 170:5454 171:1117 172:4518 173:3421 174:901 175:1354 176:3783 177:4756 178:4309 179:2295 180:2972 181:4353 182:3862 183:2677 184:2039 185:21703 186:5501 187:4772 188:4613 189:4477 190:9665 191:1565 192:11408 193:9508 194:7863 195:5642 196:3255 197:3283 198:6061 199:6105 200:8031 201:6380 202:10555 203:10579 204:4666 205:3708 206:4371 207:3819 208:4352 209:5440 210:4724 211:2681 212:4932 213:4031 214:1063 215:54 216:7116 217:3461 218:1615 219:411 220:2191 221:1298 222:775 223:3251 End of report