IPv4 R&E Routing Table Report 23:05 GMT Wed 10 Dec, 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: 1017507 Prefixes after maximum aggregation (per Origin AS): 393283 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504397 Number of IPv4 prefixes with a valid ROA: 602157 Number of IPv4 prefixes with an invalid ROA: 699 Number of IPv4 prefixes with no ROA: 414651 Total ASes present in the Internet Routing Table: 77525 Prefixes per ASN: 13.12 Origin-only ASes present in the Internet Routing Table: 66455 Origin ASes announcing only one prefix: 27116 Transit ASes present in the Internet Routing Table: 11070 Transit-only ASes present in the Internet Routing Table: 561 Paths with bogon ASNs present in the IPv4 Routing Table: 18 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: 1006 Number of instances of unregistered ASNs: 1035 Number of 32-bit ASNs allocated by the RIRs: 48165 Number of 32-bit ASNs visible in the Routing Table: 39409 Prefixes from 32-bit ASNs in the Routing Table: 218614 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: 461 Number of addresses announced to Internet: 3104355584 Equivalent to 185 /8s, 8 /16s and 181 /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: 332481 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275135 Total APNIC prefixes after maximum aggregation: 80532 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 262350 Unique aggregates announced from the APNIC address blocks: 106150 APNIC Region origin ASes present in the Internet Routing Table: 14874 APNIC Prefixes per ASN: 17.64 APNIC Region origin ASes announcing only one prefix: 4523 APNIC Region transit ASes present in the Internet Routing Table: 1994 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: 10461 Number of APNIC addresses announced to Internet: 753020416 Equivalent to 44 /8s, 226 /16s and 46 /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: 297952 Total ARIN prefixes after maximum aggregation: 134526 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298059 Unique aggregates announced from the ARIN address blocks: 145633 ARIN Region origin ASes present in the Internet Routing Table: 19334 ARIN Prefixes per ASN: 15.42 ARIN Region origin ASes announcing only one prefix: 7086 ARIN Region transit ASes present in the Internet Routing Table: 1914 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: 5416 Number of ARIN addresses announced to Internet: 1342035200 Equivalent to 79 /8s, 253 /16s and 213 /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: 281940 Total RIPE prefixes after maximum aggregation: 139792 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283022 Unique aggregates announced from the RIPE address blocks: 183761 RIPE Region origin ASes present in the Internet Routing Table: 29118 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12094 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: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12859 Number of RIPE addresses announced to Internet: 735137536 Equivalent to 43 /8s, 209 /16s and 79 /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: 125477 Total LACNIC prefixes after maximum aggregation: 30793 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121406 Unique aggregates announced from the LACNIC address blocks: 49725 LACNIC Region origin ASes present in the Internet Routing Table: 11310 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2677 LACNIC Region transit ASes present in the Internet Routing Table: 2537 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9312 Number of LACNIC addresses announced to Internet: 170672128 Equivalent to 10 /8s, 44 /16s and 64 /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: 35997 Total AfriNIC prefixes after maximum aggregation: 6956 AfriNIC Deaggregation factor: 5.17 Prefixes being announced from the AfriNIC address blocks: 52209 Unique aggregates announced from the AfriNIC address blocks: 18732 AfriNIC Region origin ASes present in the Internet Routing Table: 1997 AfriNIC Prefixes per ASN: 26.14 AfriNIC Region origin ASes announcing only one prefix: 736 AfriNIC Region transit ASes present in the Internet Routing Table: 377 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: 1361 Number of AfriNIC addresses announced to Internet: 103219200 Equivalent to 6 /8s, 39 /16s and 0 /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 13283 8729 118 CHINAMOBILE-CN China Mobile Communication 7545 6034 834 582 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4604 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4403 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4015 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3722 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3340 828 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3321 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2953 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2511 274 1936 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 14164 38434 5385 AMAZON-02, US 22773 4779 3100 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3316 4863 490 GOOGLE-CLOUD-PLATFORM, US 749 3208 54760 2459 DNIC-AS-00749, US 16625 2871 1230 2152 AKAMAI-AS, US 36352 2819 229 905 AS-COLOCROSSING, US 174 2709 8771 861 COGENT-174, 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 7283 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3969 371 2273 M247, RO 20940 3847 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2543 181 1845 CDNEXT, GB 34984 2422 363 574 TELLCOM-AS, TR 8452 1681 1852 14 TE-AS TE-AS, EG 203020 1614 241 784 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 12663 3295 584 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2511 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1373 2431 267 Claro NXT Telecomunicacoes Ltda, BR 3816 1345 779 209 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1264 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1019 2486 56 TIM SA, BR 18881 904 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 1926 368 14 RAYA-AS, EG 36992 1685 1509 399 ETISALAT-MISR, EG 24863 1260 389 20 LINKdotNET-AS, EG 36903 1249 554 96 MT-MPLS, MA 37069 1092 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1047 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 562 82 3 KENET-AS, KE 37342 536 32 1 MOVITEL, MZ 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 14164 38434 5385 AMAZON-02, US 9808 13283 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12663 3295 584 UNINET, MX 12479 7283 1711 149 UNI2-AS, ES 7545 6034 834 582 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4779 3100 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4604 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4403 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 13283 13165 CHINAMOBILE-CN China Mobile Communications Grou 8151 12663 12079 UNINET, MX 12479 7283 7134 UNI2-AS, ES 7545 6034 5452 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4779 4411 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4403 4379 FPT-AS-AP FPT Telecom Company, VN 9498 4604 4268 BBIL-AP BHARTI Airtel Ltd., IN 7552 4015 3987 VIETEL-AS-AP Viettel Group, VN 11492 4715 3802 CABLEONE, 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 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 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 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 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 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, 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 /13:578 /14:1198 /15:2090 /16:13644 /17:8158 /18:13420 /19:24674 /20:44639 /21:51914 /22:112668 /23:105030 /24:639031 /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 6860 12663 UNINET, MX 12479 6213 7283 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3048 4779 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2421 14164 AMAZON-02, US 30036 2319 2662 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 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) ---------------------------------------------- 1:2436 2:1533 3:965 4:10 5:4959 6:190 7:6 8:1500 9:6 11:172 12:1230 13:537 14:2603 15:412 16:303 17:388 18:911 20:587 21:4 22:188 23:8060 24:2560 25:2 27:2793 29:19 31:3387 32:31 33:1 34:84 35:286 36:4605 37:4551 38:9957 39:1194 40:432 41:4452 42:1972 43:2890 44:415 45:19608 46:5082 47:387 49:2150 50:2049 51:597 52:1567 54:289 55:1105 56:11 57:300 58:2318 59:1337 60:1167 61:3060 62:3097 63:1740 64:5976 65:2120 66:5873 67:3235 68:1491 69:4176 70:1027 71:617 72:3042 74:2932 75:1517 76:596 77:2777 78:1916 79:1787 80:2293 81:2078 82:3835 83:1466 84:2026 85:3632 86:1107 87:2159 88:1347 89:4556 90:834 91:8415 92:2838 93:3014 94:4228 95:4548 96:1442 97:311 98:951 99:780 100:68 101:1351 102:4338 103:32649 104:5501 105:778 106:915 107:2812 108:1201 109:4217 110:2312 111:3915 112:2786 113:1925 114:2101 115:2264 116:2176 117:3137 118:2989 119:2068 120:2376 121:1497 122:2945 123:2270 124:1650 125:2932 126:125 128:1587 129:959 130:1520 131:2224 132:766 133:462 134:1628 135:525 136:1500 137:1230 138:2976 139:1598 140:1776 141:1552 142:2420 143:2120 144:1370 145:631 146:2184 147:2134 148:2788 149:2880 150:1321 151:2602 152:2269 153:788 154:9248 155:2279 156:4337 157:2241 158:1467 159:2702 160:3652 161:1996 162:3996 163:2324 164:1964 165:2624 166:1303 167:2153 168:3914 169:803 170:5436 171:1116 172:4511 173:3431 174:908 175:1355 176:3768 177:4700 178:4304 179:2302 180:2974 181:4335 182:3837 183:2621 184:2050 185:21665 186:5514 187:4757 188:4439 189:4490 190:9683 191:1530 192:11417 193:9493 194:7854 195:5609 196:3276 197:3291 198:6045 199:6093 200:8074 201:6376 202:10449 203:10487 204:4581 205:3672 206:4361 207:3768 208:4267 209:5375 210:4693 211:2679 212:4886 213:4014 214:1058 215:53 216:7061 217:3377 218:1594 219:406 220:2193 221:1285 222:776 223:3194 End of report