IPv4 R&E Routing Table Report 23:00 GMT Wed 18 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: 1034958 Prefixes after maximum aggregation (per Origin AS): 398039 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511844 Number of IPv4 prefixes with a valid ROA: 624227 Number of IPv4 prefixes with an invalid ROA: 485 Number of IPv4 prefixes with no ROA: 410246 Total ASes present in the Internet Routing Table: 78056 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66893 Origin ASes announcing only one prefix: 27249 Transit ASes present in the Internet Routing Table: 11163 Transit-only ASes present in the Internet Routing Table: 589 Paths with bogon ASNs present in the IPv4 Routing Table: 41 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: 1081 Number of instances of unregistered ASNs: 1113 Number of 32-bit ASNs allocated by the RIRs: 49005 Number of 32-bit ASNs visible in the Routing Table: 40112 Prefixes from 32-bit ASNs in the Routing Table: 224906 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: 398 Number of addresses announced to Internet: 3107151872 Equivalent to 185 /8s, 51 /16s and 96 /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: 337126 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281544 Total APNIC prefixes after maximum aggregation: 81793 APNIC Deaggregation factor: 3.44 Prefixes being announced from the APNIC address blocks: 268590 Unique aggregates announced from the APNIC address blocks: 107196 APNIC Region origin ASes present in the Internet Routing Table: 15105 APNIC Prefixes per ASN: 17.78 APNIC Region origin ASes announcing only one prefix: 4601 APNIC Region transit ASes present in the Internet Routing Table: 2042 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 52 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10679 Number of APNIC addresses announced to Internet: 751712256 Equivalent to 44 /8s, 206 /16s and 56 /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: 303428 Total ARIN prefixes after maximum aggregation: 136882 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 302136 Unique aggregates announced from the ARIN address blocks: 147014 ARIN Region origin ASes present in the Internet Routing Table: 19375 ARIN Prefixes per ASN: 15.59 ARIN Region origin ASes announcing only one prefix: 7076 ARIN Region transit ASes present in the Internet Routing Table: 1915 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: 5510 Number of ARIN addresses announced to Internet: 1349432832 Equivalent to 80 /8s, 110 /16s and 182 /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: 285181 Total RIPE prefixes after maximum aggregation: 141038 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 287858 Unique aggregates announced from the RIPE address blocks: 187534 RIPE Region origin ASes present in the Internet Routing Table: 29291 RIPE Prefixes per ASN: 9.83 RIPE Region origin ASes announcing only one prefix: 12138 RIPE Region transit ASes present in the Internet Routing Table: 4059 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: 13159 Number of RIPE addresses announced to Internet: 732331520 Equivalent to 43 /8s, 166 /16s and 126 /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: 126847 Total LACNIC prefixes after maximum aggregation: 30679 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 122344 Unique aggregates announced from the LACNIC address blocks: 50258 LACNIC Region origin ASes present in the Internet Routing Table: 11364 LACNIC Prefixes per ASN: 10.77 LACNIC Region origin ASes announcing only one prefix: 2695 LACNIC Region transit ASes present in the Internet Routing Table: 2558 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: 9385 Number of LACNIC addresses announced to Internet: 170273792 Equivalent to 10 /8s, 38 /16s and 44 /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: 36877 Total AfriNIC prefixes after maximum aggregation: 6953 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 53632 Unique aggregates announced from the AfriNIC address blocks: 19493 AfriNIC Region origin ASes present in the Internet Routing Table: 2011 AfriNIC Prefixes per ASN: 26.67 AfriNIC Region origin ASes announcing only one prefix: 739 AfriNIC Region transit ASes present in the Internet Routing Table: 381 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: 103207168 Equivalent to 6 /8s, 38 /16s and 209 /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 13747 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5954 829 516 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4847 548 320 BBIL-AP BHARTI Airtel Ltd., IN 18403 4549 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4031 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 3011 865 515 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2932 184 550 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 14481 41220 5582 AMAZON-02 - Amazon.com, Inc., US 22773 4777 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 486 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3246 8766 849 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2705 222 889 AS-COLOCROSSING - HostPapa, US 16625 2694 1178 2094 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 3822 354 2242 M247, RO 20940 3822 3389 110 AKAMAI-ASN1, NL 12389 3148 2319 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2681 194 1964 CDNEXT, GB 34984 2463 366 569 TELLCOM-AS, TR 8452 1697 1852 14 TE-AS TE-AS, EG 203020 1629 247 805 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 12812 3302 594 UNINET, MX 10620 3453 458 1104 Telmex Colombia S.A., CO 13999 2458 506 343 Mega Cable, S.A. de C.V., MX 11830 1956 369 65 Instituto Costarricense de Electricidad y 11664 1453 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1371 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 1229 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 15399 555 57 59 WANANCHI-, KE 36914 553 82 3 KENET-AS, 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 14481 41220 5582 AMAZON-02 - Amazon.com, Inc., US 9808 13747 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12812 3302 594 UNINET, MX 12479 7202 1711 149 UNI2-AS, ES 7545 5954 829 516 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4847 548 320 BBIL-AP BHARTI Airtel Ltd., IN 22773 4777 3101 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4647 308 1020 CABLEONE - CABLE ONE, INC., US 18403 4549 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 13747 13627 CHINAMOBILE-CN China Mobile Communications Grou 8151 12812 12218 UNINET, MX 12479 7202 7053 UNI2-AS, ES 7545 5954 5438 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 9498 4847 4527 BBIL-AP BHARTI Airtel Ltd., IN 18403 4549 4524 FPT-AS-AP FPT Telecom Company, VN 22773 4777 4410 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4031 4002 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: 3356 LEVEL3 - Level 3 Parent, LLC, US 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 /14:1191 /15:2091 /16:13594 /17:8219 /18:13214 /19:25290 /20:45588 /21:52142 /22:113523 /23:107112 /24:651951 /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 6973 12812 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 4777 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2604 14481 AMAZON-02 - Amazon.com, Inc., US 30036 2317 2665 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3453 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) ---------------------------------------------- 1:2486 2:1647 3:1003 4:5 5:5220 6:195 7:6 8:1497 9:37 11:172 12:1190 13:637 14:2669 15:459 16:168 17:422 18:919 20:603 21:4 22:188 23:8187 24:2839 25:2 27:2817 28:1 29:19 31:3403 32:30 34:90 35:291 36:4645 37:4462 38:9971 39:1267 40:409 41:4514 42:2097 43:3065 44:444 45:19949 46:4898 47:408 48:93 49:2187 50:2072 51:611 52:1300 54:278 55:1076 56:11 57:315 58:2360 59:1362 60:1174 61:3123 62:3112 63:1749 64:6242 65:2130 66:5997 67:3259 68:1502 69:4221 70:1054 71:615 72:3126 74:2999 75:1498 76:592 77:2872 78:1912 79:1795 80:2338 81:2167 82:3999 83:1443 84:2052 85:3815 86:1103 87:2286 88:1355 89:4694 90:798 91:8423 92:2835 93:3005 94:4298 95:4632 96:1446 97:313 98:948 99:802 100:68 101:1613 102:4468 103:33129 104:5466 105:813 106:924 107:2850 108:1223 109:4195 110:2299 111:4102 112:3153 113:1978 114:2183 115:2232 116:2193 117:3444 118:2991 119:2073 120:2687 121:1508 122:2981 123:2252 124:1667 125:3010 126:125 128:1660 129:960 130:1590 131:2474 132:802 133:463 134:1640 135:596 136:1591 137:1344 138:3167 139:1643 140:1772 141:1593 142:2540 143:2152 144:1752 145:631 146:2196 147:2150 148:2736 149:3063 150:1354 151:2716 152:2278 153:949 154:9576 155:2325 156:4628 157:2275 158:1503 159:2778 160:3825 161:1952 162:4017 163:2422 164:2034 165:2636 166:1299 167:2246 168:3978 169:891 170:5534 171:1110 172:4600 173:3459 174:886 175:1368 176:3830 177:4792 178:4329 179:2283 180:3118 181:4467 182:4013 183:2824 184:2014 185:21770 186:5694 187:4930 188:4563 189:4497 190:9756 191:1545 192:11483 193:9587 194:7839 195:5740 196:3308 197:3338 198:6115 199:6108 200:8054 201:6389 202:10670 203:10643 204:4722 205:3712 206:4462 207:3856 208:4371 209:5395 210:4725 211:2686 212:4966 213:4101 214:1059 215:46 216:7252 217:3536 218:1693 219:420 220:2161 221:1312 222:931 223:3341 End of report