IPv4 R&E Routing Table Report 23:05 GMT Wed 07 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: 1022026 Prefixes after maximum aggregation (per Origin AS): 394060 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 506228 Number of IPv4 prefixes with a valid ROA: 609604 Number of IPv4 prefixes with an invalid ROA: 589 Number of IPv4 prefixes with no ROA: 411833 Total ASes present in the Internet Routing Table: 77647 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66547 Origin ASes announcing only one prefix: 27103 Transit ASes present in the Internet Routing Table: 11100 Transit-only ASes present in the Internet Routing Table: 561 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: 209 Max AS path prepend of ASN (214570) 200 Prefixes from unregistered ASNs in the Routing Table: 1056 Number of instances of unregistered ASNs: 1085 Number of 32-bit ASNs allocated by the RIRs: 48298 Number of 32-bit ASNs visible in the Routing Table: 39562 Prefixes from 32-bit ASNs in the Routing Table: 220368 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: 543 Number of addresses announced to Internet: 3105518080 Equivalent to 185 /8s, 26 /16s and 114 /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: 333684 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277916 Total APNIC prefixes after maximum aggregation: 80963 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 264605 Unique aggregates announced from the APNIC address blocks: 106689 APNIC Region origin ASes present in the Internet Routing Table: 14943 APNIC Prefixes per ASN: 17.71 APNIC Region origin ASes announcing only one prefix: 4526 APNIC Region transit ASes present in the Internet Routing Table: 2009 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10529 Number of APNIC addresses announced to Internet: 754085376 Equivalent to 44 /8s, 242 /16s and 110 /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: 298680 Total ARIN prefixes after maximum aggregation: 134687 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298895 Unique aggregates announced from the ARIN address blocks: 145603 ARIN Region origin ASes present in the Internet Routing Table: 19335 ARIN Prefixes per ASN: 15.46 ARIN Region origin ASes announcing only one prefix: 7057 ARIN Region transit ASes present in the Internet Routing Table: 1916 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: 5420 Number of ARIN addresses announced to Internet: 1342566144 Equivalent to 80 /8s, 5 /16s and 239 /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: 282592 Total RIPE prefixes after maximum aggregation: 139944 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283731 Unique aggregates announced from the RIPE address blocks: 184204 RIPE Region origin ASes present in the Internet Routing Table: 29131 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12098 RIPE Region transit ASes present in the Internet Routing Table: 4041 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 209 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12905 Number of RIPE addresses announced to Internet: 734926080 Equivalent to 43 /8s, 206 /16s and 21 /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: 125594 Total LACNIC prefixes after maximum aggregation: 30849 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121396 Unique aggregates announced from the LACNIC address blocks: 49779 LACNIC Region origin ASes present in the Internet Routing Table: 11336 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2682 LACNIC Region transit ASes present in the Internet Routing Table: 2551 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: 9337 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: 36188 Total AfriNIC prefixes after maximum aggregation: 6913 AfriNIC Deaggregation factor: 5.23 Prefixes being announced from the AfriNIC address blocks: 52856 Unique aggregates announced from the AfriNIC address blocks: 19481 AfriNIC Region origin ASes present in the Internet Routing Table: 2006 AfriNIC Prefixes per ASN: 26.35 AfriNIC Region origin ASes announcing only one prefix: 740 AfriNIC Region transit ASes present in the Internet Routing Table: 385 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: 1371 Number of AfriNIC addresses announced to Internet: 103158016 Equivalent to 6 /8s, 38 /16s and 17 /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 13397 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6028 833 574 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4664 543 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4412 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4057 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3410 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3327 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3114 195 613 LCS-AS-AP LARUS Limited, HK 24560 2956 865 499 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 14103 38496 5431 AMAZON-02, US 22773 4746 3097 372 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4635 308 1031 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 82 SHAW, CA 396982 3325 4868 494 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 174 3035 8770 857 COGENT-174, US 16625 2836 1217 2125 AKAMAI-AS, US 36352 2706 222 889 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 7272 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3945 369 2271 M247, RO 20940 3832 3393 110 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2570 182 1867 CDNEXT, GB 34984 2424 372 576 TELLCOM-AS, TR 8452 1709 1852 14 TE-AS TE-AS, EG 203020 1631 243 799 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 12672 3293 598 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2488 506 351 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1374 2432 267 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 1014 2486 56 TIM SA, BR 18881 903 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 1849 1534 341 ETISALAT-MISR, EG 24863 1266 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1109 523 46 Vodafone-, EG 37069 1100 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 551 82 3 KENET-AS, KE 328608 550 47 168 Africa-on-Cloud-AS, ZA 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 14103 38496 5431 AMAZON-02, US 9808 13397 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12672 3293 598 UNINET, MX 12479 7272 1711 149 UNI2-AS, ES 7545 6028 833 574 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4746 3097 372 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4664 543 336 BBIL-AP BHARTI Airtel Ltd., IN 11492 4635 308 1031 CABLEONE, US 18403 4412 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 13397 13277 CHINAMOBILE-CN China Mobile Communications Grou 8151 12672 12074 UNINET, MX 12479 7272 7123 UNI2-AS, ES 7545 6028 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4412 4388 FPT-AS-AP FPT Telecom Company, VN 22773 4746 4374 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4664 4328 BBIL-AP BHARTI Airtel Ltd., IN 7552 4057 4028 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 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 397817 UNALLOCATED 12.25.103.0/24 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 /11:94 /12:302 /13:577 /14:1197 /15:2090 /16:13643 /17:8166 /18:13427 /19:24719 /20:44735 /21:51925 /22:112910 /23:105608 /24:642562 /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 6873 12672 UNINET, MX 12479 6203 7272 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 CABLEONE, US 6327 3478 3690 SHAW, CA 22773 3053 4746 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2496 14103 AMAZON-02, US 30036 2305 2646 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) ---------------------------------------------- 1:2472 2:1522 3:982 4:9 5:4993 6:186 7:6 8:1507 9:15 11:172 12:1233 13:619 14:2635 15:418 16:275 17:386 18:915 20:592 21:4 22:188 23:8100 24:2618 25:2 27:2803 29:19 31:3397 32:31 34:84 35:288 36:4647 37:4516 38:9906 39:1234 40:438 41:4498 42:1941 43:2968 44:413 45:19700 46:4964 47:395 49:2168 50:2052 51:598 52:1254 54:229 55:1117 56:11 57:308 58:2317 59:1346 60:1171 61:3090 62:3107 63:1764 64:6124 65:2141 66:5999 67:3256 68:1505 69:4199 70:1033 71:615 72:3078 74:2962 75:1517 76:600 77:2754 78:1925 79:1790 80:2301 81:2079 82:3962 83:1472 84:2028 85:3674 86:1101 87:2198 88:1355 89:4636 90:830 91:8417 92:2835 93:3017 94:4271 95:4543 96:1436 97:311 98:957 99:789 100:69 101:1336 102:4341 103:32930 104:5437 105:770 106:921 107:2814 108:1208 109:4258 110:2312 111:4015 112:2925 113:1971 114:2096 115:2267 116:2172 117:3265 118:3005 119:2108 120:2431 121:1506 122:2953 123:2288 124:1652 125:2971 126:125 128:1570 129:950 130:1538 131:2258 132:763 133:461 134:1629 135:539 136:1550 137:1216 138:2977 139:1606 140:1774 141:1561 142:2444 143:2134 144:1409 145:629 146:2187 147:2146 148:2793 149:2915 150:1329 151:2595 152:2253 153:848 154:9494 155:2313 156:4544 157:2245 158:1477 159:2734 160:3656 161:1997 162:3990 163:2330 164:1964 165:2657 166:1305 167:2197 168:3913 169:805 170:5431 171:1117 172:4523 173:3417 174:896 175:1355 176:3771 177:4709 178:4234 179:2293 180:2972 181:4356 182:3875 183:2713 184:2011 185:21696 186:5502 187:4799 188:4621 189:4476 190:9658 191:1531 192:11415 193:9503 194:7849 195:5681 196:3259 197:3122 198:6057 199:6103 200:8032 201:6369 202:10552 203:10571 204:4652 205:3691 206:4348 207:3815 208:4344 209:5443 210:4727 211:2685 212:4928 213:4029 214:1062 215:54 216:7130 217:3448 218:1616 219:414 220:2192 221:1298 222:775 223:3268 End of report