IPv4 R&E Routing Table Report 23:00 GMT Sat 28 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: 1036176 Prefixes after maximum aggregation (per Origin AS): 397926 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511583 Number of IPv4 prefixes with a valid ROA: 625684 Number of IPv4 prefixes with an invalid ROA: 423 Number of IPv4 prefixes with no ROA: 410069 Total ASes present in the Internet Routing Table: 78133 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66923 Origin ASes announcing only one prefix: 27281 Transit ASes present in the Internet Routing Table: 11210 Transit-only ASes present in the Internet Routing Table: 586 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: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1080 Number of instances of unregistered ASNs: 1112 Number of 32-bit ASNs allocated by the RIRs: 49156 Number of 32-bit ASNs visible in the Routing Table: 40196 Prefixes from 32-bit ASNs in the Routing Table: 226472 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: 392 Number of addresses announced to Internet: 3106885632 Equivalent to 185 /8s, 47 /16s and 80 /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: 337876 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282615 Total APNIC prefixes after maximum aggregation: 82256 APNIC Deaggregation factor: 3.44 Prefixes being announced from the APNIC address blocks: 269605 Unique aggregates announced from the APNIC address blocks: 107204 APNIC Region origin ASes present in the Internet Routing Table: 15123 APNIC Prefixes per ASN: 17.83 APNIC Region origin ASes announcing only one prefix: 4611 APNIC Region transit ASes present in the Internet Routing Table: 2045 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: 10693 Number of APNIC addresses announced to Internet: 752857344 Equivalent to 44 /8s, 223 /16s and 177 /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: 302192 Total ARIN prefixes after maximum aggregation: 135676 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301542 Unique aggregates announced from the ARIN address blocks: 146546 ARIN Region origin ASes present in the Internet Routing Table: 19389 ARIN Prefixes per ASN: 15.55 ARIN Region origin ASes announcing only one prefix: 7104 ARIN Region transit ASes present in the Internet Routing Table: 1929 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: 1347898880 Equivalent to 80 /8s, 87 /16s and 78 /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: 286277 Total RIPE prefixes after maximum aggregation: 141637 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 288592 Unique aggregates announced from the RIPE address blocks: 187869 RIPE Region origin ASes present in the Internet Routing Table: 29338 RIPE Prefixes per ASN: 9.84 RIPE Region origin ASes announcing only one prefix: 12155 RIPE Region transit ASes present in the Internet Routing Table: 4073 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: 13204 Number of RIPE addresses announced to Internet: 732702720 Equivalent to 43 /8s, 172 /16s and 40 /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: 126967 Total LACNIC prefixes after maximum aggregation: 30693 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 122556 Unique aggregates announced from the LACNIC address blocks: 50193 LACNIC Region origin ASes present in the Internet Routing Table: 11365 LACNIC Prefixes per ASN: 10.78 LACNIC Region origin ASes announcing only one prefix: 2687 LACNIC Region transit ASes present in the Internet Routing Table: 2582 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: 169870848 Equivalent to 10 /8s, 32 /16s and 6 /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: 37045 Total AfriNIC prefixes after maximum aggregation: 6968 AfriNIC Deaggregation factor: 5.32 Prefixes being announced from the AfriNIC address blocks: 53489 Unique aggregates announced from the AfriNIC address blocks: 19429 AfriNIC Region origin ASes present in the Internet Routing Table: 2008 AfriNIC Prefixes per ASN: 26.64 AfriNIC Region origin ASes announcing only one prefix: 724 AfriNIC Region transit ASes present in the Internet Routing Table: 379 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: 103299840 Equivalent to 6 /8s, 40 /16s and 59 /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 13777 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 4600 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 4053 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3675 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3479 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3348 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 3007 861 514 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2814 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 14578 41225 5609 AMAZON-02 - Amazon.com, Inc., US 22773 4781 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 3296 4857 489 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3211 8764 827 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2704 222 888 AS-COLOCROSSING - HostPapa, US 16625 2669 1167 2082 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 7182 1711 149 UNI2-AS, ES 39891 4971 306 72 ALJAWWALSTC-AS, SA 9009 3841 356 2249 M247, RO 20940 3822 3389 110 AKAMAI-ASN1, NL 12389 3148 2319 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2697 195 1980 CDNEXT, GB 34984 2454 365 569 TELLCOM-AS, TR 8452 1726 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 12828 3294 607 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 1454 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 1243 371 22 INTEGRATEL PERU S.A.A., PE 26615 1058 2393 95 TIM SA, BR 22884 1055 67 355 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 1289 389 16 LINKdotNET-AS, EG 36935 1246 523 46 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1117 1100 11 MOBINIL, EG 29571 1072 78 20 ORANGE-COTE-IVOIRE, CI 20011 589 155 220 NTT-DATA-Inc, ZA 15399 554 57 59 WANANCHI-, KE 36914 551 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 14578 41225 5609 AMAZON-02 - Amazon.com, Inc., US 9808 13777 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12828 3294 607 UNINET, MX 12479 7182 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 4781 3101 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4651 309 1023 CABLEONE - CABLE ONE, INC., US 18403 4600 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 13777 13657 CHINAMOBILE-CN China Mobile Communications Grou 8151 12828 12221 UNINET, MX 12479 7182 7033 UNI2-AS, ES 7545 5937 5430 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4971 4899 ALJAWWALSTC-AS, SA 18403 4600 4574 FPT-AS-AP FPT Telecom Company, VN 9498 4876 4559 BBIL-AP BHARTI Airtel Ltd., IN 22773 4781 4415 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 23.137.200.0/24 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 23.142.82.0/23 Origin: 397423 TIER-NET - Tier.Net Technologies LLC, US 23.142.82.0/23 Transit: 6461 ZAYO-6461 - Zayo Bandwidth, 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 /16:13574 /17:8233 /18:13214 /19:25304 /20:45639 /21:52139 /22:113499 /23:106975 /24:653273 /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 7002 12828 UNINET, MX 12479 6124 7182 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 3050 4781 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2618 14578 AMAZON-02 - Amazon.com, Inc., US 30036 2317 2666 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 2:1705 3:1003 4:5 5:5194 6:193 7:6 8:1501 9:38 11:172 12:1190 13:684 14:2671 15:459 16:169 17:421 18:916 20:583 21:4 22:188 23:8190 24:2852 25:2 27:2819 28:1 29:19 31:3413 32:36 34:90 35:290 36:4655 37:4455 38:9972 39:1276 40:415 41:4573 42:2230 43:3062 44:449 45:19910 46:4864 47:409 48:99 49:2202 50:2037 51:618 52:1307 54:275 55:1119 56:11 57:317 58:2355 59:1386 60:1173 61:3130 62:3122 63:1748 64:6265 65:2131 66:6023 67:3254 68:1503 69:4216 70:1054 71:607 72:3151 74:2997 75:1488 76:591 77:2917 78:1931 79:1794 80:2334 81:2205 82:4029 83:1439 84:2084 85:3804 86:1093 87:2297 88:1350 89:4700 90:785 91:8416 92:2838 93:3015 94:4337 95:4637 96:1449 97:314 98:942 99:811 100:68 101:1623 102:4452 103:32988 104:5338 105:819 106:910 107:2848 108:1228 109:4218 110:2302 111:4111 112:3139 113:1978 114:2264 115:2285 116:2198 117:3492 118:3000 119:2082 120:2689 121:1543 122:2983 123:2249 124:1704 125:3015 126:125 128:1663 129:957 130:1610 131:2456 132:803 133:475 134:1654 135:607 136:1590 137:1352 138:3170 139:1633 140:1761 141:1696 142:2518 143:2097 144:1713 145:642 146:2194 147:2167 148:2731 149:3078 150:1359 151:2736 152:2305 153:986 154:9552 155:2312 156:4465 157:2282 158:1506 159:2815 160:3832 161:1955 162:4031 163:2449 164:2037 165:2636 166:1288 167:2261 168:4001 169:887 170:5552 171:1118 172:4538 173:3478 174:885 175:1378 176:3826 177:4799 178:4360 179:2301 180:3166 181:4477 182:4017 183:2832 184:2012 185:21787 186:5772 187:4968 188:4613 189:4516 190:9798 191:1533 192:11446 193:9580 194:7850 195:5801 196:3329 197:3347 198:6105 199:6083 200:8084 201:6412 202:10667 203:10633 204:4749 205:3736 206:4483 207:3860 208:4378 209:5432 210:4714 211:2686 212:4989 213:4108 214:1051 215:47 216:7282 217:3546 218:1698 219:421 220:2202 221:1307 222:929 223:3407 End of report