IPv4 R&E Routing Table Report 23:05 GMT Fri 19 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: 903800 Prefixes after maximum aggregation (per Origin AS): 360985 Deaggregation factor: 2.50 Unique aggregates announced (without unneeded subnets): 465609 Number of IPv4 prefixes with a valid ROA: 539596 Number of IPv4 prefixes with an invalid ROA: 525 Number of IPv4 prefixes with no ROA: 363679 Total ASes present in the Internet Routing Table: 71683 Prefixes per ASN: 12.61 Origin-only ASes present in the Internet Routing Table: 61134 Origin ASes announcing only one prefix: 25361 Transit ASes present in the Internet Routing Table: 10549 Transit-only ASes present in the Internet Routing Table: 1000 Paths with bogon ASNs present in the IPv4 Routing Table: 17 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 68 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 814 Number of instances of unregistered ASNs: 836 Number of 32-bit ASNs allocated by the RIRs: 48251 Number of 32-bit ASNs visible in the Routing Table: 36660 Prefixes from 32-bit ASNs in the Routing Table: 196449 Number of bogon 32-bit ASNs visible in the Routing Table: 56 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 660 Number of addresses announced to Internet: 2818951424 Equivalent to 168 /8s, 5 /16s and 201 /24s Percentage of available address space announced: 76.1 Percentage of allocated address space announced: 76.1 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: 283962 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265125 Total APNIC prefixes after maximum aggregation: 78329 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 253426 Unique aggregates announced from the APNIC address blocks: 104000 APNIC Region origin ASes present in the Internet Routing Table: 14721 APNIC Prefixes per ASN: 17.22 APNIC Region origin ASes announcing only one prefix: 4532 APNIC Region transit ASes present in the Internet Routing Table: 1980 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: 10372 Number of APNIC addresses announced to Internet: 731761664 Equivalent to 43 /8s, 157 /16s and 204 /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: 261731 Total ARIN prefixes after maximum aggregation: 123882 ARIN Deaggregation factor: 2.11 Prefixes being announced from the ARIN address blocks: 263289 Unique aggregates announced from the ARIN address blocks: 136744 ARIN Region origin ASes present in the Internet Routing Table: 17666 ARIN Prefixes per ASN: 14.90 ARIN Region origin ASes announcing only one prefix: 6648 ARIN Region transit ASes present in the Internet Routing Table: 1802 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 27 Number of ARIN region 32-bit ASNs visible in the Routing Table: 4926 Number of ARIN addresses announced to Internet: 1255277568 Equivalent to 74 /8s, 210 /16s and 4 /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: 234544 Total RIPE prefixes after maximum aggregation: 121227 RIPE Deaggregation factor: 1.93 Prefixes being announced from the RIPE address blocks: 234585 Unique aggregates announced from the RIPE address blocks: 160734 RIPE Region origin ASes present in the Internet Routing Table: 25588 RIPE Prefixes per ASN: 9.17 RIPE Region origin ASes announcing only one prefix: 10877 RIPE Region transit ASes present in the Internet Routing Table: 3768 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 33 Number of RIPE region 32-bit ASNs visible in the Routing Table: 11339 Number of RIPE addresses announced to Internet: 597730304 Equivalent to 35 /8s, 160 /16s and 164 /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: 110639 Total LACNIC prefixes after maximum aggregation: 30036 LACNIC Deaggregation factor: 3.68 Prefixes being announced from the LACNIC address blocks: 107193 Unique aggregates announced from the LACNIC address blocks: 45936 LACNIC Region origin ASes present in the Internet Routing Table: 10586 LACNIC Prefixes per ASN: 10.13 LACNIC Region origin ASes announcing only one prefix: 2618 LACNIC Region transit ASes present in the Internet Routing Table: 2433 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: 8788 Number of LACNIC addresses announced to Internet: 139971328 Equivalent to 8 /8s, 87 /16s and 203 /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: 30947 Total AfriNIC prefixes after maximum aggregation: 6933 AfriNIC Deaggregation factor: 4.46 Prefixes being announced from the AfriNIC address blocks: 44647 Unique aggregates announced from the AfriNIC address blocks: 17653 AfriNIC Region origin ASes present in the Internet Routing Table: 1826 AfriNIC Prefixes per ASN: 24.45 AfriNIC Region origin ASes announcing only one prefix: 686 AfriNIC Region transit ASes present in the Internet Routing Table: 361 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 65 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1235 Number of AfriNIC addresses announced to Internet: 93916928 Equivalent to 5 /8s, 153 /16s and 15 /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 13331 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6009 834 582 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4622 542 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4438 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4025 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3728 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3378 832 184 CMNET-JIANGSU-AP China Mobile communicati 45899 3324 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2954 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2514 275 1939 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 13800 38439 5381 AMAZON-02, US 11492 4619 308 1000 CABLEONE, US 6327 3690 1320 83 SHAW, CA 7155 3663 271 67 VIASAT-SP-BACKBONE, US 396982 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 749 3142 54729 2393 DNIC-AS-00749, US 36352 2579 210 1064 AS-COLOCROSSING, US 16625 2561 1098 1992 AKAMAI-AS, US 7029 2494 2549 878 WINDSTREAM, US 13335 2358 329 772 CLOUDFLARENET, 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 6975 1709 161 UNI2-AS, ES 9009 3935 368 2281 M247, RO 39891 3561 223 69 ALJAWWALSTC-AS, SA 20940 3457 3394 120 AKAMAI-ASN1, NL 212238 2228 156 1696 CDNEXT, GB 34984 1708 311 564 TELLCOM-AS, TR 8452 1682 1848 14 TE-AS TE-AS, EG 203020 1288 184 642 HOSTROYALE, IN 13188 1259 79 295 TRIOLAN, UA 62240 1253 82 628 CLOUVIDER Clouvider - Global ASN, GB 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 12643 3285 588 UNINET, MX 10620 3118 415 1348 Telmex Colombia S.A., CO 13999 2349 490 358 Mega Cable, S.A. de C.V., MX 11830 1769 369 65 Instituto Costarricense de Electricidad y 28573 1369 2429 273 Claro NXT Telecomunicacoes Ltda, BR 3816 1080 589 235 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 26615 1003 2486 56 TIM SA, BR 27651 848 140 44 ENTEL CHILE S.A., CL 11172 780 123 89 Alestra, S. de R.L. de C.V., MX 21826 762 83 12 Corporacion Telemic C.A., VE 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 1538 368 14 RAYA-AS, EG 36992 1360 1468 416 ETISALAT-MISR, EG 24863 1224 389 22 LINKdotNET-AS, EG 36903 1210 544 157 MT-MPLS, MA 37069 1082 1084 18 MOBINIL, EG 29571 1068 94 34 ORANGE-COTE-IVOIRE, CI 36935 659 134 170 Vodafone-, EG 20011 569 151 203 NTT-DATA-Inc, ZA 36914 554 82 3 KENET-AS, KE 37342 535 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 13800 38439 5381 AMAZON-02, US 9808 13331 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12643 3285 588 UNINET, MX 12479 6975 1709 161 UNI2-AS, ES 7545 6009 834 582 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4622 542 336 BBIL-AP BHARTI Airtel Ltd., IN 11492 4619 308 1000 CABLEONE, US 18403 4438 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4025 1332 28 VIETEL-AS-AP Viettel Group, VN 9009 3935 368 2281 M247, RO 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 13331 13211 CHINAMOBILE-CN China Mobile Communications Grou 8151 12643 12055 UNINET, MX 12479 6975 6814 UNI2-AS, ES 7545 6009 5427 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4438 4414 FPT-AS-AP FPT Telecom Company, VN 9498 4622 4286 BBIL-AP BHARTI Airtel Ltd., IN 7552 4025 3997 VIETEL-AS-AP Viettel Group, VN 7713 3728 3663 TELKOMNET-AS-AP PT Telekomunikasi Indonesia, ID 11492 4619 3619 CABLEONE, US 6327 3690 3607 SHAW, CA 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 7018 ATT-INTERNET4, US 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US 21861 UNALLOCATED 12.37.59.0/24 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: 3257 GTT-BACKBONE GTT, 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 23.140.216.0/24 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 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 /8:15 /9:12 /10:40 /11:90 /12:274 /13:524 /14:1028 /15:1764 /16:12192 /17:7226 /18:11590 /19:21639 /20:39687 /21:46124 /22:100691 /23:93825 /24:567079 /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 6875 12643 UNINET, MX 12479 6034 6975 UNI2-AS, ES 11492 3483 4619 CABLEONE, US 6327 3477 3690 SHAW, CA 7155 2758 3663 VIASAT-SP-BACKBONE, US 39891 2410 3561 ALJAWWALSTC-AS, SA 16509 2399 13800 AMAZON-02, US 10620 2015 3118 Telmex Colombia S.A., CO 9009 1998 3935 M247, RO 30036 1878 2170 MEDIACOM-ENTERPRISE-BUSINESS, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2351 2:1246 3:956 4:9 5:4316 6:158 7:6 8:1278 9:10 11:172 12:1145 13:595 14:2534 15:406 16:278 17:381 18:865 20:583 21:4 22:188 23:6977 24:2172 25:2 27:2722 29:19 31:2864 32:28 33:1 34:77 35:262 36:4482 37:3818 38:7985 39:1206 40:416 41:3874 42:1926 43:2760 44:365 45:17279 46:4364 47:370 49:2106 50:1867 51:548 52:1261 54:228 55:1005 56:11 57:291 58:2128 59:1293 60:1127 61:2937 62:2560 63:1557 64:4972 65:1852 66:4910 67:2713 68:1352 69:3747 70:798 71:560 72:2593 74:2564 75:1477 76:532 77:2310 78:1340 79:1344 80:1878 81:1772 82:3250 83:1194 84:1693 85:2950 86:893 87:1910 88:1109 89:3956 90:720 91:6911 92:2380 93:2304 94:3303 95:3746 96:1298 97:262 98:766 99:781 100:64 101:1224 102:3774 103:31838 104:4975 105:603 106:784 107:2532 108:1113 109:3583 110:2248 111:3971 112:2653 113:1878 114:2066 115:2099 116:1979 117:3054 118:2966 119:2033 120:2377 121:1390 122:2866 123:2203 124:1593 125:2874 126:125 128:1462 129:717 130:1349 131:1706 132:680 133:462 134:1463 135:467 136:1379 137:1123 138:2542 139:1455 140:1383 141:1342 142:2272 143:1879 144:1192 145:554 146:1997 147:2027 148:2587 149:2470 150:1222 151:2245 152:2163 153:736 154:7693 155:1959 156:3442 157:2048 158:1368 159:2301 160:3527 161:1700 162:3579 163:2153 164:1702 165:2299 166:1245 167:1956 168:3504 169:700 170:4654 171:1059 172:4155 173:2913 174:771 175:1332 176:3214 177:4404 178:3601 179:1783 180:2854 181:3630 182:3774 183:2498 184:1853 185:18385 186:4868 187:4334 188:3694 189:4291 190:7607 191:1339 192:10088 193:7730 194:6300 195:4591 196:2756 197:2973 198:5271 199:5412 200:6819 201:5741 202:10209 203:10135 204:4068 205:3398 206:3803 207:3266 208:3795 209:4731 210:4577 211:2567 212:3937 213:3379 214:1005 215:52 216:6183 217:2799 218:1498 219:383 220:2049 221:1190 222:732 223:3205 End of report