IPv4 R&E Routing Table Report 23:00 GMT Fri 20 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: 1035724 Prefixes after maximum aggregation (per Origin AS): 398531 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511968 Number of IPv4 prefixes with a valid ROA: 624920 Number of IPv4 prefixes with an invalid ROA: 489 Number of IPv4 prefixes with no ROA: 410315 Total ASes present in the Internet Routing Table: 78100 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66902 Origin ASes announcing only one prefix: 27264 Transit ASes present in the Internet Routing Table: 11198 Transit-only ASes present in the Internet Routing Table: 584 Paths with bogon ASNs present in the IPv4 Routing Table: 42 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1077 Number of instances of unregistered ASNs: 1109 Number of 32-bit ASNs allocated by the RIRs: 49032 Number of 32-bit ASNs visible in the Routing Table: 40136 Prefixes from 32-bit ASNs in the Routing Table: 225287 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: 390 Number of addresses announced to Internet: 3107419136 Equivalent to 185 /8s, 55 /16s and 116 /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: 337570 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281811 Total APNIC prefixes after maximum aggregation: 82010 APNIC Deaggregation factor: 3.44 Prefixes being announced from the APNIC address blocks: 268976 Unique aggregates announced from the APNIC address blocks: 107115 APNIC Region origin ASes present in the Internet Routing Table: 15098 APNIC Prefixes per ASN: 17.82 APNIC Region origin ASes announcing only one prefix: 4600 APNIC Region transit ASes present in the Internet Routing Table: 2049 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: 10675 Number of APNIC addresses announced to Internet: 751691776 Equivalent to 44 /8s, 205 /16s and 232 /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: 303643 Total ARIN prefixes after maximum aggregation: 136998 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 302361 Unique aggregates announced from the ARIN address blocks: 147023 ARIN Region origin ASes present in the Internet Routing Table: 19389 ARIN Prefixes per ASN: 15.59 ARIN Region origin ASes announcing only one prefix: 7086 ARIN Region transit ASes present in the Internet Routing Table: 1920 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: 5525 Number of ARIN addresses announced to Internet: 1349276160 Equivalent to 80 /8s, 108 /16s and 82 /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: 285633 Total RIPE prefixes after maximum aggregation: 141199 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 288350 Unique aggregates announced from the RIPE address blocks: 187762 RIPE Region origin ASes present in the Internet Routing Table: 29325 RIPE Prefixes per ASN: 9.83 RIPE Region origin ASes announcing only one prefix: 12151 RIPE Region transit ASes present in the Internet Routing Table: 4072 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: 13175 Number of RIPE addresses announced to Internet: 732486656 Equivalent to 43 /8s, 168 /16s and 220 /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: 126624 Total LACNIC prefixes after maximum aggregation: 30679 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 122299 Unique aggregates announced from the LACNIC address blocks: 50273 LACNIC Region origin ASes present in the Internet Routing Table: 11369 LACNIC Prefixes per ASN: 10.76 LACNIC Region origin ASes announcing only one prefix: 2696 LACNIC Region transit ASes present in the Internet Routing Table: 2565 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: 9386 Number of LACNIC addresses announced to Internet: 170391296 Equivalent to 10 /8s, 39 /16s and 247 /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: 36936 Total AfriNIC prefixes after maximum aggregation: 6942 AfriNIC Deaggregation factor: 5.32 Prefixes being announced from the AfriNIC address blocks: 53348 Unique aggregates announced from the AfriNIC address blocks: 19454 AfriNIC Region origin ASes present in the Internet Routing Table: 2010 AfriNIC Prefixes per ASN: 26.54 AfriNIC Region origin ASes announcing only one prefix: 731 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: 1375 Number of AfriNIC addresses announced to Internet: 103318272 Equivalent to 6 /8s, 40 /16s and 131 /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 13760 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5941 829 514 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4850 548 322 BBIL-AP BHARTI Airtel Ltd., IN 18403 4565 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 3009 862 514 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2806 177 540 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 14513 41221 5579 AMAZON-02 - Amazon.com, Inc., US 22773 4780 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 3711 1321 75 SHAW - Shaw Communications, CA 396982 3293 4856 487 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3227 8766 848 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2704 222 888 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 7204 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3828 355 2249 M247, RO 20940 3820 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 1699 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 12825 3302 595 UNINET, MX 10620 3453 458 1104 Telmex Colombia S.A., CO 13999 2460 506 344 Mega Cable, S.A. de C.V., MX 11830 1914 369 65 Instituto Costarricense de Electricidad y 11664 1451 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 1243 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 547 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 14513 41221 5579 AMAZON-02 - Amazon.com, Inc., US 9808 13760 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12825 3302 595 UNINET, MX 12479 7204 1711 149 UNI2-AS, ES 7545 5941 829 514 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4850 548 322 BBIL-AP BHARTI Airtel Ltd., IN 22773 4780 3101 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4647 308 1020 CABLEONE - CABLE ONE, INC., US 18403 4565 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 13760 13640 CHINAMOBILE-CN China Mobile Communications Grou 8151 12825 12230 UNINET, MX 12479 7204 7055 UNI2-AS, ES 7545 5941 5427 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4565 4540 FPT-AS-AP FPT Telecom Company, VN 9498 4850 4528 BBIL-AP BHARTI Airtel Ltd., IN 22773 4780 4413 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 /15:2088 /16:13572 /17:8228 /18:13226 /19:25296 /20:45625 /21:52203 /22:113639 /23:107118 /24:652494 /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 6985 12825 UNINET, MX 12479 6145 7204 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3507 4647 CABLEONE - CABLE ONE, INC., US 6327 3491 3711 SHAW - Shaw Communications, CA 22773 3048 4780 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2606 14513 AMAZON-02 - Amazon.com, Inc., US 30036 2318 2667 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) ---------------------------------------------- 1:2488 2:1677 3:1005 4:5 5:5224 6:197 7:6 8:1501 9:38 11:172 12:1193 13:659 14:2670 15:459 16:169 17:422 18:917 20:582 21:4 22:188 23:8198 24:2842 25:2 27:2817 28:1 29:19 31:3405 32:36 34:90 35:290 36:4647 37:4469 38:9992 39:1273 40:412 41:4557 42:2205 43:3051 44:443 45:19909 46:4892 47:407 48:99 49:2192 50:2072 51:614 52:1303 54:279 55:1121 56:11 57:315 58:2363 59:1361 60:1174 61:3123 62:3116 63:1747 64:6242 65:2129 66:6009 67:3258 68:1503 69:4216 70:1056 71:614 72:3144 74:3003 75:1495 76:592 77:2885 78:1919 79:1798 80:2340 81:2195 82:4002 83:1443 84:2084 85:3819 86:1103 87:2296 88:1356 89:4700 90:798 91:8417 92:2842 93:3011 94:4311 95:4641 96:1440 97:313 98:947 99:805 100:68 101:1616 102:4468 103:32939 104:5469 105:813 106:925 107:2852 108:1224 109:4212 110:2301 111:4100 112:3156 113:1979 114:2260 115:2287 116:2192 117:3489 118:2996 119:2079 120:2686 121:1542 122:2980 123:2257 124:1690 125:3013 126:125 128:1660 129:955 130:1599 131:2463 132:807 133:463 134:1641 135:596 136:1586 137:1337 138:3167 139:1638 140:1775 141:1603 142:2546 143:2140 144:1752 145:628 146:2197 147:2144 148:2736 149:3059 150:1357 151:2712 152:2302 153:952 154:9511 155:2317 156:4378 157:2270 158:1504 159:2802 160:3821 161:1957 162:4026 163:2435 164:2037 165:2629 166:1301 167:2251 168:3977 169:889 170:5524 171:1108 172:4600 173:3467 174:885 175:1373 176:3835 177:4782 178:4320 179:2290 180:3193 181:4469 182:4014 183:2826 184:2012 185:21810 186:5722 187:4935 188:4569 189:4514 190:9761 191:1559 192:11481 193:9589 194:7861 195:5740 196:3317 197:3317 198:6122 199:6111 200:8068 201:6351 202:10670 203:10638 204:4719 205:3717 206:4463 207:3854 208:4374 209:5400 210:4723 211:2688 212:4985 213:4115 214:1059 215:46 216:7244 217:3541 218:1692 219:420 220:2202 221:1308 222:932 223:3392 End of report