IPv4 R&E Routing Table Report 23:00 GMT Thu 26 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: 1034793 Prefixes after maximum aggregation (per Origin AS): 397679 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511250 Number of IPv4 prefixes with a valid ROA: 624849 Number of IPv4 prefixes with an invalid ROA: 420 Number of IPv4 prefixes with no ROA: 409524 Total ASes present in the Internet Routing Table: 78114 Prefixes per ASN: 13.25 Origin-only ASes present in the Internet Routing Table: 66914 Origin ASes announcing only one prefix: 27304 Transit ASes present in the Internet Routing Table: 11200 Transit-only ASes present in the Internet Routing Table: 582 Paths with bogon ASNs present in the IPv4 Routing Table: 39 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 68 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 1069 Number of instances of unregistered ASNs: 1101 Number of 32-bit ASNs allocated by the RIRs: 49124 Number of 32-bit ASNs visible in the Routing Table: 40174 Prefixes from 32-bit ASNs in the Routing Table: 226066 Number of bogon 32-bit ASNs visible in the Routing Table: 80 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 397 Number of addresses announced to Internet: 3106706944 Equivalent to 185 /8s, 44 /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: 337569 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281983 Total APNIC prefixes after maximum aggregation: 82147 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269500 Unique aggregates announced from the APNIC address blocks: 107167 APNIC Region origin ASes present in the Internet Routing Table: 15117 APNIC Prefixes per ASN: 17.83 APNIC Region origin ASes announcing only one prefix: 4612 APNIC Region transit ASes present in the Internet Routing Table: 2040 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: 10688 Number of APNIC addresses announced to Internet: 752856832 Equivalent to 44 /8s, 223 /16s and 175 /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: 302015 Total ARIN prefixes after maximum aggregation: 135599 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301328 Unique aggregates announced from the ARIN address blocks: 146513 ARIN Region origin ASes present in the Internet Routing Table: 19394 ARIN Prefixes per ASN: 15.54 ARIN Region origin ASes announcing only one prefix: 7109 ARIN Region transit ASes present in the Internet Routing Table: 1923 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 29 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5529 Number of ARIN addresses announced to Internet: 1348111104 Equivalent to 80 /8s, 90 /16s and 139 /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: 286030 Total RIPE prefixes after maximum aggregation: 141544 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 288273 Unique aggregates announced from the RIPE address blocks: 187680 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: 12154 RIPE Region transit ASes present in the Internet Routing Table: 4074 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: 13181 Number of RIPE addresses announced to Internet: 732343040 Equivalent to 43 /8s, 166 /16s and 171 /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: 126856 Total LACNIC prefixes after maximum aggregation: 30701 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 122500 Unique aggregates announced from the LACNIC address blocks: 50198 LACNIC Region origin ASes present in the Internet Routing Table: 11368 LACNIC Prefixes per ASN: 10.78 LACNIC Region origin ASes announcing only one prefix: 2697 LACNIC Region transit ASes present in the Internet Routing Table: 2576 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: 9395 Number of LACNIC addresses announced to Internet: 169847552 Equivalent to 10 /8s, 31 /16s and 171 /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: 36840 Total AfriNIC prefixes after maximum aggregation: 6997 AfriNIC Deaggregation factor: 5.27 Prefixes being announced from the AfriNIC address blocks: 52795 Unique aggregates announced from the AfriNIC address blocks: 19345 AfriNIC Region origin ASes present in the Internet Routing Table: 2016 AfriNIC Prefixes per ASN: 26.19 AfriNIC Region origin ASes announcing only one prefix: 732 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: 52 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1381 Number of AfriNIC addresses announced to Internet: 103290368 Equivalent to 6 /8s, 40 /16s and 22 /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 13775 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5937 829 507 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4876 548 317 BBIL-AP BHARTI Airtel Ltd., IN 18403 4560 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4053 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3674 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3479 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3344 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 3005 861 512 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2464 270 1935 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 14563 41224 5613 AMAZON-02 - Amazon.com, Inc., US 22773 4782 3101 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4651 309 1023 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3721 1321 75 SHAW - Shaw Communications, CA 396982 3295 4856 488 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3209 8763 828 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2705 222 886 AS-COLOCROSSING - HostPapa, US 16625 2666 1164 2081 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 7187 1711 149 UNI2-AS, ES 39891 4971 306 72 ALJAWWALSTC-AS, SA 9009 3842 356 2250 M247, RO 20940 3819 3389 110 AKAMAI-ASN1, NL 12389 3149 2319 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2689 195 1973 CDNEXT, GB 34984 2454 365 569 TELLCOM-AS, TR 8452 1714 1852 14 TE-AS TE-AS, EG 203020 1632 248 807 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 12824 3294 606 UNINET, MX 10620 3453 458 1104 Telmex Colombia S.A., CO 13999 2460 506 344 Mega Cable, S.A. de C.V., MX 11830 1959 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 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1244 371 22 INTEGRATEL PERU S.A.A., PE 26615 1058 2393 95 TIM SA, BR 22884 1057 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 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 1854 1531 336 ETISALAT-MISR, EG 24863 1285 389 16 LINKdotNET-AS, EG 36935 1247 524 47 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1117 1100 11 MOBINIL, EG 29571 1072 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 223 NTT-DATA-Inc, ZA 15399 554 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 14563 41224 5613 AMAZON-02 - Amazon.com, Inc., US 9808 13775 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12824 3294 606 UNINET, MX 12479 7187 1711 149 UNI2-AS, ES 7545 5937 829 507 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4971 306 72 ALJAWWALSTC-AS, SA 9498 4876 548 317 BBIL-AP BHARTI Airtel Ltd., IN 22773 4782 3101 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4651 309 1023 CABLEONE - CABLE ONE, INC., US 18403 4560 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 13775 13655 CHINAMOBILE-CN China Mobile Communications Grou 8151 12824 12218 UNINET, MX 12479 7187 7038 UNI2-AS, ES 7545 5937 5430 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4971 4899 ALJAWWALSTC-AS, SA 9498 4876 4559 BBIL-AP BHARTI Airtel Ltd., IN 18403 4560 4535 FPT-AS-AP FPT Telecom Company, VN 22773 4782 4416 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4053 4024 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 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3 - Level 3 Parent 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 /13:582 /14:1190 /15:2092 /16:13572 /17:8231 /18:13214 /19:25312 /20:45594 /21:52153 /22:113509 /23:106928 /24:651954 /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 6998 12824 UNINET, MX 12479 6129 7187 UNI2-AS, ES 39891 3655 4971 ALJAWWALSTC-AS, SA 11492 3511 4651 CABLEONE - CABLE ONE, INC., US 6327 3501 3721 SHAW - Shaw Communications, CA 22773 3051 4782 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2619 14563 AMAZON-02 - Amazon.com, Inc., US 30036 2316 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) ---------------------------------------------- 1:2488 2:1684 3:1004 4:5 5:5188 6:196 7:6 8:1500 9:38 11:172 12:1190 13:680 14:2668 15:458 16:169 17:421 18:918 20:581 21:4 22:188 23:8193 24:2855 25:2 27:2819 28:2 29:19 31:3407 32:36 34:90 35:290 36:4653 37:4428 38:9974 39:1275 40:410 41:4528 42:2203 43:3058 44:447 45:19796 46:4874 47:408 48:99 49:2204 50:2034 51:618 52:1307 54:277 55:1099 56:11 57:317 58:2355 59:1385 60:1173 61:3125 62:3120 63:1749 64:6253 65:2130 66:6015 67:3254 68:1500 69:4215 70:1054 71:607 72:3140 74:2995 75:1488 76:591 77:2900 78:1925 79:1794 80:2330 81:2200 82:4005 83:1439 84:2088 85:3806 86:1094 87:2293 88:1350 89:4698 90:785 91:8412 92:2838 93:3014 94:4341 95:4629 96:1450 97:314 98:943 99:810 100:68 101:1622 102:4464 103:32961 104:5334 105:820 106:924 107:2842 108:1229 109:4214 110:2301 111:4111 112:3137 113:1978 114:2263 115:2285 116:2196 117:3492 118:2992 119:2083 120:2689 121:1544 122:2983 123:2247 124:1705 125:3015 126:125 128:1660 129:956 130:1598 131:2451 132:803 133:463 134:1643 135:607 136:1587 137:1348 138:3164 139:1631 140:1760 141:1699 142:2519 143:2110 144:1705 145:638 146:2196 147:2166 148:2719 149:3077 150:1358 151:2731 152:2305 153:984 154:9316 155:2306 156:4182 157:2278 158:1504 159:2815 160:3825 161:1950 162:4026 163:2442 164:2042 165:2641 166:1287 167:2257 168:3984 169:875 170:5541 171:1116 172:4535 173:3472 174:885 175:1376 176:3821 177:4815 178:4354 179:2299 180:3162 181:4474 182:4017 183:2829 184:2011 185:21785 186:5765 187:4945 188:4612 189:4521 190:9789 191:1565 192:11439 193:9578 194:7835 195:5795 196:3282 197:3296 198:6098 199:6091 200:8078 201:6407 202:10657 203:10634 204:4741 205:3716 206:4477 207:3853 208:4372 209:5420 210:4722 211:2686 212:4986 213:4101 214:1051 215:47 216:7267 217:3543 218:1698 219:421 220:2203 221:1307 222:929 223:3405 End of report