IPv4 R&E Routing Table Report 23:00 GMT Tue 17 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: 1034471 Prefixes after maximum aggregation (per Origin AS): 398169 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511798 Number of IPv4 prefixes with a valid ROA: 624028 Number of IPv4 prefixes with an invalid ROA: 502 Number of IPv4 prefixes with no ROA: 409941 Total ASes present in the Internet Routing Table: 78059 Prefixes per ASN: 13.25 Origin-only ASes present in the Internet Routing Table: 66889 Origin ASes announcing only one prefix: 27256 Transit ASes present in the Internet Routing Table: 11170 Transit-only ASes present in the Internet Routing Table: 586 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: 1083 Number of instances of unregistered ASNs: 1115 Number of 32-bit ASNs allocated by the RIRs: 48986 Number of 32-bit ASNs visible in the Routing Table: 40115 Prefixes from 32-bit ASNs in the Routing Table: 224919 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: 401 Number of addresses announced to Internet: 3106826240 Equivalent to 185 /8s, 46 /16s and 104 /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: 337091 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281293 Total APNIC prefixes after maximum aggregation: 81760 APNIC Deaggregation factor: 3.44 Prefixes being announced from the APNIC address blocks: 268512 Unique aggregates announced from the APNIC address blocks: 107303 APNIC Region origin ASes present in the Internet Routing Table: 15108 APNIC Prefixes per ASN: 17.77 APNIC Region origin ASes announcing only one prefix: 4600 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: 10683 Number of APNIC addresses announced to Internet: 751691264 Equivalent to 44 /8s, 205 /16s and 230 /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: 303214 Total ARIN prefixes after maximum aggregation: 137104 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 301987 Unique aggregates announced from the ARIN address blocks: 146901 ARIN Region origin ASes present in the Internet Routing Table: 19369 ARIN Prefixes per ASN: 15.59 ARIN Region origin ASes announcing only one prefix: 7079 ARIN Region transit ASes present in the Internet Routing Table: 1925 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5512 Number of ARIN addresses announced to Internet: 1349075968 Equivalent to 80 /8s, 105 /16s and 68 /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: 285177 Total RIPE prefixes after maximum aggregation: 140980 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 287782 Unique aggregates announced from the RIPE address blocks: 187545 RIPE Region origin ASes present in the Internet Routing Table: 29300 RIPE Prefixes per ASN: 9.82 RIPE Region origin ASes announcing only one prefix: 12151 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: 13165 Number of RIPE addresses announced to Internet: 732423424 Equivalent to 43 /8s, 167 /16s and 229 /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: 126832 Total LACNIC prefixes after maximum aggregation: 30690 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 122339 Unique aggregates announced from the LACNIC address blocks: 50228 LACNIC Region origin ASes present in the Internet Routing Table: 11362 LACNIC Prefixes per ASN: 10.77 LACNIC Region origin ASes announcing only one prefix: 2691 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: 9378 Number of LACNIC addresses announced to Internet: 170368512 Equivalent to 10 /8s, 39 /16s and 158 /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: 36872 Total AfriNIC prefixes after maximum aggregation: 6940 AfriNIC Deaggregation factor: 5.31 Prefixes being announced from the AfriNIC address blocks: 53450 Unique aggregates announced from the AfriNIC address blocks: 19469 AfriNIC Region origin ASes present in the Internet Routing Table: 2012 AfriNIC Prefixes per ASN: 26.57 AfriNIC Region origin ASes announcing only one prefix: 735 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: 1377 Number of AfriNIC addresses announced to Internet: 103073536 Equivalent to 6 /8s, 36 /16s and 199 /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 5955 829 517 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4847 548 320 BBIL-AP BHARTI Airtel Ltd., IN 18403 4586 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4033 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3673 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 3010 865 515 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2810 177 539 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 14443 41219 5564 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 3291 4856 485 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3243 8766 847 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2701 221 894 AS-COLOCROSSING - HostPapa, US 16625 2697 1178 2096 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 3826 355 2246 M247, RO 20940 3823 3393 109 AKAMAI-ASN1, NL 12389 3148 2319 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2680 194 1963 CDNEXT, GB 34984 2462 366 568 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 12809 3302 596 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2455 506 346 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 1371 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 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 580 154 212 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 14443 41219 5564 AMAZON-02 - Amazon.com, Inc., US 9808 13747 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12809 3302 596 UNINET, MX 12479 7202 1711 149 UNI2-AS, ES 7545 5955 829 517 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 4586 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 12809 12213 UNINET, MX 12479 7202 7053 UNI2-AS, ES 7545 5955 5438 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4586 4561 FPT-AS-AP FPT Telecom Company, VN 9498 4847 4527 BBIL-AP BHARTI Airtel Ltd., IN 22773 4777 4410 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4033 4004 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 200051 UNALLOCATED 2.27.62.0/24 30823 AUROLOGIC aurologic Gmb 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 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 /14:1189 /15:2091 /16:13590 /17:8226 /18:13198 /19:25285 /20:45551 /21:52138 /22:113554 /23:107050 /24:651556 /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 6972 12809 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 3045 4777 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2590 14443 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) ---------------------------------------------- 1:2492 2:1618 3:996 4:5 5:5224 6:195 7:6 8:1497 9:29 11:172 12:1192 13:628 14:2668 15:459 16:168 17:421 18:916 20:603 21:4 22:188 23:8191 24:2837 25:2 27:2814 28:1 29:19 31:3410 32:30 34:90 35:291 36:4635 37:4457 38:9968 39:1269 40:410 41:4531 42:2101 43:3047 44:446 45:19926 46:4906 47:408 48:93 49:2187 50:2069 51:603 52:1305 54:279 55:1109 56:11 57:315 58:2358 59:1361 60:1174 61:3108 62:3111 63:1750 64:6250 65:2111 66:5996 67:3259 68:1502 69:4220 70:1054 71:613 72:3124 74:2968 75:1480 76:592 77:2876 78:1912 79:1793 80:2335 81:2166 82:3994 83:1442 84:2042 85:3816 86:1103 87:2276 88:1354 89:4692 90:798 91:8420 92:2836 93:3010 94:4302 95:4625 96:1445 97:312 98:944 99:802 100:68 101:1611 102:4472 103:33017 104:5469 105:813 106:924 107:2855 108:1224 109:4207 110:2298 111:4089 112:3153 113:1981 114:2178 115:2279 116:2192 117:3442 118:3001 119:2072 120:2689 121:1508 122:2980 123:2251 124:1668 125:3010 126:125 128:1666 129:959 130:1588 131:2476 132:802 133:463 134:1641 135:596 136:1602 137:1344 138:3169 139:1643 140:1771 141:1591 142:2539 143:2157 144:1744 145:632 146:2195 147:2156 148:2736 149:3063 150:1345 151:2714 152:2263 153:955 154:9482 155:2317 156:4575 157:2273 158:1503 159:2777 160:3842 161:1954 162:4015 163:2419 164:2037 165:2581 166:1301 167:2246 168:3956 169:890 170:5535 171:1092 172:4595 173:3461 174:886 175:1367 176:3831 177:4796 178:4330 179:2284 180:3145 181:4467 182:4013 183:2827 184:2013 185:21788 186:5704 187:4927 188:4564 189:4507 190:9737 191:1576 192:11480 193:9586 194:7837 195:5739 196:3308 197:3332 198:6114 199:6108 200:8049 201:6386 202:10667 203:10642 204:4726 205:3726 206:4451 207:3859 208:4358 209:5388 210:4725 211:2686 212:4976 213:4094 214:1049 215:46 216:7273 217:3537 218:1681 219:420 220:2160 221:1312 222:934 223:3341 End of report