IPv4 R&E Routing Table Report 23:00 GMT Wed 29 Apr, 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: 1043802 Prefixes after maximum aggregation (per Origin AS): 400256 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 515522 Number of IPv4 prefixes with a valid ROA: 639071 Number of IPv4 prefixes with an invalid ROA: 448 Number of IPv4 prefixes with no ROA: 404283 Total ASes present in the Internet Routing Table: 78308 Prefixes per ASN: 13.33 Origin-only ASes present in the Internet Routing Table: 67092 Origin ASes announcing only one prefix: 27382 Transit ASes present in the Internet Routing Table: 11216 Transit-only ASes present in the Internet Routing Table: 592 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: 216 Max AS path prepend of ASN (205624) 211 Prefixes from unregistered ASNs in the Routing Table: 1011 Number of instances of unregistered ASNs: 1040 Number of 32-bit ASNs allocated by the RIRs: 49533 Number of 32-bit ASNs visible in the Routing Table: 40441 Prefixes from 32-bit ASNs in the Routing Table: 228850 Number of bogon 32-bit ASNs visible in the Routing Table: 76 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 451 Number of addresses announced to Internet: 3104326144 Equivalent to 185 /8s, 8 /16s and 66 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 340309 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 284996 Total APNIC prefixes after maximum aggregation: 82600 APNIC Deaggregation factor: 3.45 Prefixes being announced from the APNIC address blocks: 271335 Unique aggregates announced from the APNIC address blocks: 107836 APNIC Region origin ASes present in the Internet Routing Table: 15134 APNIC Prefixes per ASN: 17.93 APNIC Region origin ASes announcing only one prefix: 4606 APNIC Region transit ASes present in the Internet Routing Table: 2051 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: 10733 Number of APNIC addresses announced to Internet: 749074688 Equivalent to 44 /8s, 165 /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: 303539 Total ARIN prefixes after maximum aggregation: 136343 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 302725 Unique aggregates announced from the ARIN address blocks: 147449 ARIN Region origin ASes present in the Internet Routing Table: 19407 ARIN Prefixes per ASN: 15.60 ARIN Region origin ASes announcing only one prefix: 7124 ARIN Region transit ASes present in the Internet Routing Table: 1896 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 216 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5553 Number of ARIN addresses announced to Internet: 1348113664 Equivalent to 80 /8s, 90 /16s and 149 /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: 288978 Total RIPE prefixes after maximum aggregation: 142931 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 291996 Unique aggregates announced from the RIPE address blocks: 190588 RIPE Region origin ASes present in the Internet Routing Table: 29432 RIPE Prefixes per ASN: 9.92 RIPE Region origin ASes announcing only one prefix: 12205 RIPE Region transit ASes present in the Internet Routing Table: 4091 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13332 Number of RIPE addresses announced to Internet: 732712192 Equivalent to 43 /8s, 172 /16s and 77 /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: 128246 Total LACNIC prefixes after maximum aggregation: 30763 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 123004 Unique aggregates announced from the LACNIC address blocks: 50314 LACNIC Region origin ASes present in the Internet Routing Table: 11383 LACNIC Prefixes per ASN: 10.81 LACNIC Region origin ASes announcing only one prefix: 2716 LACNIC Region transit ASes present in the Internet Routing Table: 2588 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: 9432 Number of LACNIC addresses announced to Internet: 170012160 Equivalent to 10 /8s, 34 /16s and 46 /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: 37032 Total AfriNIC prefixes after maximum aggregation: 6995 AfriNIC Deaggregation factor: 5.29 Prefixes being announced from the AfriNIC address blocks: 54291 Unique aggregates announced from the AfriNIC address blocks: 18967 AfriNIC Region origin ASes present in the Internet Routing Table: 2022 AfriNIC Prefixes per ASN: 26.85 AfriNIC Region origin ASes announcing only one prefix: 731 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: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1391 Number of AfriNIC addresses announced to Internet: 104209152 Equivalent to 6 /8s, 54 /16s and 27 /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 13864 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5888 826 484 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4933 551 321 BBIL-AP BHARTI Airtel Ltd., IN 18403 4543 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 4057 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3678 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3538 887 177 CMNET-JIANGSU-AP China Mobile communicati 17561 3472 218 568 LCS-AS-AP LARUS Limited, HK 45899 3365 1868 100 VNPT-AS-VN VNPT Corp, VN 24560 2900 813 658 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 14841 41289 5662 AMAZON-02 - Amazon.com, Inc., US 22773 4781 3116 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4653 309 1047 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3725 1305 75 SHAW - Shaw Communications, CA 174 3404 8769 842 COGENT-174 - Cogent Communications, LLC, 396982 3332 4860 502 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3139 54728 2390 DNIC-AS-00749 - United States Department 36352 2719 222 903 AS-COLOCROSSING - HostPapa, US 30036 2621 360 436 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom C 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 7171 1711 149 UNI2-AS, ES 39891 4943 305 72 ALJAWWALSTC-AS, SA 9009 3849 354 2254 M247, RO 20940 3833 3389 111 AKAMAI-ASN1, NL 12389 3141 2321 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2761 201 2036 CDNEXT, GB 34984 2450 365 578 TELLCOM-AS, TR 8452 1726 1852 14 TE-AS TE-AS, EG 203020 1655 252 831 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 12858 3309 628 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2401 505 348 Mega Cable, S.A. de C.V., MX 11830 1936 369 65 Instituto Costarricense de Electricidad y 11664 1447 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1373 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1228 371 22 INTEGRATEL PERU S.A.A., PE 26615 1073 2392 100 TIM SA, BR 22884 1071 70 363 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 2027 649 36 RAYA-AS, EG 36992 1859 1533 336 ETISALAT-MISR, EG 24863 1271 389 16 LINKdotNET-AS, EG 36935 1237 522 44 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1117 1100 11 MOBINIL, EG 29571 1071 78 19 ORANGE-COTE-IVOIRE, CI 20011 589 155 220 NTT-DATA-Inc, ZA 36914 556 82 3 KENET-AS, KE 15399 553 57 58 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 14841 41289 5662 AMAZON-02 - Amazon.com, Inc., US 9808 13864 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12858 3309 628 UNINET, MX 12479 7171 1711 149 UNI2-AS, ES 7545 5888 826 484 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 305 72 ALJAWWALSTC-AS, SA 9498 4933 551 321 BBIL-AP BHARTI Airtel Ltd., IN 22773 4781 3116 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4653 309 1047 CABLEONE - CABLE ONE, INC., US 18403 4543 347 26 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 13864 13743 CHINAMOBILE-CN China Mobile Communications Grou 8151 12858 12230 UNINET, MX 12479 7171 7022 UNI2-AS, ES 7545 5888 5404 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 4871 ALJAWWALSTC-AS, SA 9498 4933 4612 BBIL-AP BHARTI Airtel Ltd., IN 18403 4543 4517 FPT-AS-AP FPT Telecom Company, VN 22773 4781 4417 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4057 4029 VIETEL-AS-AP Viettel Group, VN 7155 3870 3780 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 395729 UNALLOCATED 8.28.58.0/24 32787 PROLEXIC-TECHNOLOGIES-D 395729 UNALLOCATED 8.28.60.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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 /10:39 /11:95 /12:297 /13:581 /14:1189 /15:2095 /16:13591 /17:8239 /18:13242 /19:25389 /20:45686 /21:52343 /22:113508 /23:107500 /24:659978 /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 7047 12858 UNINET, MX 12479 6112 7171 UNI2-AS, ES 39891 3628 4943 ALJAWWALSTC-AS, SA 11492 3517 4653 CABLEONE - CABLE ONE, INC., US 6327 3506 3725 SHAW - Shaw Communications, CA 22773 3054 4781 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2662 14841 AMAZON-02 - Amazon.com, Inc., US 30036 2275 2621 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3429 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) ---------------------------------------------- 1:2483 2:1897 3:1012 4:5 5:5181 6:200 7:6 8:1496 9:43 11:172 12:1185 13:719 14:2702 15:461 16:204 17:428 18:921 20:587 21:4 22:188 23:8178 24:2781 25:2 27:2824 28:1 29:19 31:3475 32:36 34:90 35:284 36:4743 37:4435 38:10183 39:1294 40:436 41:4570 42:2171 43:3166 44:452 45:19854 46:4865 47:439 48:127 49:2345 50:2013 51:671 52:1325 54:290 55:1210 56:11 57:323 58:2362 59:1380 60:1174 61:3159 62:3125 63:1709 64:6347 65:2145 66:6120 67:3269 68:1497 69:4215 70:1062 71:612 72:3212 74:3030 75:1502 76:592 77:2924 78:1991 79:1791 80:2348 81:2239 82:4119 83:1446 84:2125 85:3840 86:1089 87:2484 88:1333 89:4800 90:808 91:8461 92:2809 93:3020 94:4385 95:4724 96:1450 97:315 98:944 99:822 100:70 101:1623 102:4528 103:32954 104:5376 105:863 106:899 107:2894 108:1246 109:4253 110:2288 111:4129 112:3175 113:1970 114:2281 115:2311 116:2163 117:3519 118:3038 119:2082 120:2710 121:1542 122:2986 123:2276 124:1706 125:3017 126:126 128:1570 129:954 130:1634 131:2480 132:878 133:486 134:1670 135:605 136:1589 137:1350 138:3320 139:1617 140:1761 141:1728 142:2546 143:2122 144:1778 145:643 146:2190 147:2224 148:2806 149:3173 150:1383 151:2909 152:2555 153:1397 154:10114 155:2311 156:4766 157:2388 158:1570 159:2865 160:3826 161:1960 162:4044 163:2527 164:2326 165:2674 166:1286 167:2305 168:4006 169:873 170:5575 171:1134 172:4753 173:3465 174:881 175:1363 176:3884 177:4835 178:4381 179:2319 180:3200 181:4554 182:4018 183:2830 184:2011 185:21866 186:6007 187:4998 188:4549 189:4540 190:9845 191:1670 192:11457 193:9636 194:7884 195:5821 196:3357 197:3251 198:6116 199:6066 200:8103 201:6404 202:10670 203:10641 204:4758 205:3697 206:4595 207:3854 208:4377 209:5424 210:4731 211:2687 212:5097 213:4103 214:1043 215:47 216:7315 217:3609 218:1700 219:425 220:2192 221:1340 222:939 223:3441 End of report