IPv4 R&E Routing Table Report 23:00 GMT Thu 19 Mar, 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: 1035253 Prefixes after maximum aggregation (per Origin AS): 398414 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511899 Number of IPv4 prefixes with a valid ROA: 624279 Number of IPv4 prefixes with an invalid ROA: 484 Number of IPv4 prefixes with no ROA: 410490 Total ASes present in the Internet Routing Table: 78099 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66915 Origin ASes announcing only one prefix: 27268 Transit ASes present in the Internet Routing Table: 11184 Transit-only ASes present in the Internet Routing Table: 585 Paths with bogon ASNs present in the IPv4 Routing Table: 42 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1080 Number of instances of unregistered ASNs: 1112 Number of 32-bit ASNs allocated by the RIRs: 49024 Number of 32-bit ASNs visible in the Routing Table: 40136 Prefixes from 32-bit ASNs in the Routing Table: 225280 Number of bogon 32-bit ASNs visible in the Routing Table: 84 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 397 Number of addresses announced to Internet: 3107558912 Equivalent to 185 /8s, 57 /16s and 150 /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: 337340 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281707 Total APNIC prefixes after maximum aggregation: 82072 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 268820 Unique aggregates announced from the APNIC address blocks: 107199 APNIC Region origin ASes present in the Internet Routing Table: 15110 APNIC Prefixes per ASN: 17.79 APNIC Region origin ASes announcing only one prefix: 4600 APNIC Region transit ASes present in the Internet Routing Table: 2046 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 52 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10685 Number of APNIC addresses announced to Internet: 751696128 Equivalent to 44 /8s, 205 /16s and 249 /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: 303558 Total ARIN prefixes after maximum aggregation: 136904 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 302258 Unique aggregates announced from the ARIN address blocks: 147028 ARIN Region origin ASes present in the Internet Routing Table: 19379 ARIN Prefixes per ASN: 15.60 ARIN Region origin ASes announcing only one prefix: 7078 ARIN Region transit ASes present in the Internet Routing Table: 1917 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 25 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5520 Number of ARIN addresses announced to Internet: 1349254400 Equivalent to 80 /8s, 107 /16s and 253 /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, 393216-404380 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: 285407 Total RIPE prefixes after maximum aggregation: 141085 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 288132 Unique aggregates announced from the RIPE address blocks: 187649 RIPE Region origin ASes present in the Internet Routing Table: 29317 RIPE Prefixes per ASN: 9.83 RIPE Region origin ASes announcing only one prefix: 12158 RIPE Region transit ASes present in the Internet Routing Table: 4072 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13164 Number of RIPE addresses announced to Internet: 732600064 Equivalent to 43 /8s, 170 /16s and 151 /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: 126602 Total LACNIC prefixes after maximum aggregation: 30702 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 122289 Unique aggregates announced from the LACNIC address blocks: 50231 LACNIC Region origin ASes present in the Internet Routing Table: 11372 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2698 LACNIC Region transit ASes present in the Internet Routing Table: 2559 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: 9388 Number of LACNIC addresses announced to Internet: 170400256 Equivalent to 10 /8s, 40 /16s and 26 /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: 36899 Total AfriNIC prefixes after maximum aggregation: 6951 AfriNIC Deaggregation factor: 5.31 Prefixes being announced from the AfriNIC address blocks: 53357 Unique aggregates announced from the AfriNIC address blocks: 19444 AfriNIC Region origin ASes present in the Internet Routing Table: 2013 AfriNIC Prefixes per ASN: 26.51 AfriNIC Region origin ASes announcing only one prefix: 734 AfriNIC Region transit ASes present in the Internet Routing Table: 380 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1379 Number of AfriNIC addresses announced to Internet: 103347968 Equivalent to 6 /8s, 40 /16s and 247 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & 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 13761 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5945 829 514 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4848 548 321 BBIL-AP BHARTI Airtel Ltd., IN 18403 4598 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4032 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3674 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3478 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3336 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 3008 862 514 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2834 178 552 LCS-AS-AP LARUS Limited, HK 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 14500 41220 5576 AMAZON-02 - Amazon.com, Inc., US 22773 4778 3101 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4647 308 1020 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3709 1321 75 SHAW - Shaw Communications, CA 396982 3293 4856 487 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3246 8767 850 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2705 222 889 AS-COLOCROSSING - HostPapa, US 16625 2695 1178 2093 AKAMAI-AS - Akamai Technologies, Inc., 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 7202 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3823 355 2243 M247, RO 20940 3821 3389 110 AKAMAI-ASN1, NL 12389 3149 2319 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2680 194 1963 CDNEXT, GB 34984 2463 366 569 TELLCOM-AS, TR 8452 1697 1852 14 TE-AS TE-AS, EG 203020 1630 247 806 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 12815 3302 596 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2459 506 344 Mega Cable, S.A. de C.V., MX 11830 1956 369 65 Instituto Costarricense de Electricidad y 11664 1454 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1372 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1341 770 214 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1244 371 22 INTEGRATEL PERU S.A.A., PE 22884 1057 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1057 2475 94 TIM SA, 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 2045 648 34 RAYA-AS, EG 36992 1843 1531 336 ETISALAT-MISR, EG 24863 1289 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1199 521 44 Vodafone-, EG 37069 1109 1100 11 MOBINIL, EG 29571 1072 78 20 ORANGE-COTE-IVOIRE, CI 20011 586 155 217 NTT-DATA-Inc, ZA 36914 556 82 3 KENET-AS, KE 15399 555 57 59 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 14500 41220 5576 AMAZON-02 - Amazon.com, Inc., US 9808 13761 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12815 3302 596 UNINET, MX 12479 7202 1711 149 UNI2-AS, ES 7545 5945 829 514 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4848 548 321 BBIL-AP BHARTI Airtel Ltd., IN 22773 4778 3101 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4647 308 1020 CABLEONE - CABLE ONE, INC., US 18403 4598 347 25 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 13761 13641 CHINAMOBILE-CN China Mobile Communications Grou 8151 12815 12219 UNINET, MX 12479 7202 7053 UNI2-AS, ES 7545 5945 5431 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4598 4573 FPT-AS-AP FPT Telecom Company, VN 9498 4848 4527 BBIL-AP BHARTI Airtel Ltd., IN 22773 4778 4411 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4032 4003 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE - ViaSat,Inc., 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 - C 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En 397665 UNALLOCATED 12.24.28.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 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 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, 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 /10:40 /11:95 /12:297 /13:581 /14:1192 /15:2091 /16:13595 /17:8228 /18:13220 /19:25296 /20:45612 /21:52192 /22:113600 /23:107105 /24:652079 /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 6974 12815 UNINET, MX 12479 6143 7202 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3507 4647 CABLEONE - CABLE ONE, INC., US 6327 3489 3709 SHAW - Shaw Communications, CA 22773 3046 4778 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2602 14500 AMAZON-02 - Amazon.com, Inc., US 30036 2317 2665 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2232 3452 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) ---------------------------------------------- 1:2487 2:1660 3:1004 4:5 5:5214 6:197 7:6 8:1501 9:38 11:172 12:1186 13:656 14:2671 15:459 16:168 17:422 18:916 20:582 21:4 22:188 23:8188 24:2839 25:2 27:2817 28:1 29:19 31:3404 32:32 34:90 35:291 36:4647 37:4463 38:9991 39:1273 40:409 41:4552 42:2136 43:3066 44:444 45:19929 46:4887 47:407 48:97 49:2200 50:2068 51:611 52:1303 54:279 55:1107 56:11 57:315 58:2365 59:1360 60:1174 61:3124 62:3115 63:1749 64:6244 65:2112 66:5998 67:3260 68:1503 69:4217 70:1054 71:614 72:3133 74:2998 75:1498 76:592 77:2885 78:1916 79:1773 80:2340 81:2196 82:4001 83:1444 84:2054 85:3820 86:1104 87:2285 88:1355 89:4701 90:797 91:8420 92:2843 93:3011 94:4306 95:4639 96:1445 97:313 98:945 99:806 100:68 101:1616 102:4465 103:33025 104:5469 105:813 106:925 107:2849 108:1222 109:4197 110:2300 111:4100 112:3160 113:1979 114:2260 115:2234 116:2195 117:3484 118:2996 119:2078 120:2688 121:1542 122:2985 123:2260 124:1666 125:3012 126:125 128:1659 129:955 130:1594 131:2463 132:800 133:463 134:1640 135:596 136:1591 137:1342 138:3167 139:1640 140:1771 141:1596 142:2543 143:2146 144:1755 145:631 146:2193 147:2145 148:2732 149:3065 150:1354 151:2715 152:2299 153:949 154:9539 155:2324 156:4396 157:2265 158:1504 159:2780 160:3824 161:1957 162:4025 163:2433 164:2037 165:2636 166:1300 167:2247 168:3975 169:887 170:5510 171:1107 172:4600 173:3463 174:885 175:1368 176:3835 177:4811 178:4323 179:2285 180:3194 181:4466 182:4015 183:2830 184:2013 185:21782 186:5688 187:4917 188:4563 189:4503 190:9744 191:1541 192:11485 193:9591 194:7860 195:5742 196:3303 197:3331 198:6119 199:6107 200:8050 201:6397 202:10670 203:10638 204:4720 205:3713 206:4463 207:3853 208:4374 209:5395 210:4726 211:2686 212:4983 213:4117 214:1053 215:46 216:7260 217:3535 218:1692 219:420 220:2161 221:1310 222:932 223:3335 End of report