IPv4 R&E Routing Table Report 23:05 GMT Mon 18 Aug, 2025 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: 992993 Prefixes after maximum aggregation (per Origin AS): 385582 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 489837 Number of IPv4 prefixes with a valid ROA: 562321 Number of IPv4 prefixes with an invalid ROA: 814 Number of IPv4 prefixes with no ROA: 429858 Total ASes present in the Internet Routing Table: 77132 Prefixes per ASN: 12.87 Origin-only ASes present in the Internet Routing Table: 66087 Origin ASes announcing only one prefix: 26998 Transit ASes present in the Internet Routing Table: 11045 Transit-only ASes present in the Internet Routing Table: 547 Paths with bogon ASNs present in the IPv4 Routing Table: 31 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 97 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1113 Number of instances of unregistered ASNs: 1157 Number of 32-bit ASNs allocated by the RIRs: 47202 Number of 32-bit ASNs visible in the Routing Table: 38786 Prefixes from 32-bit ASNs in the Routing Table: 208116 Number of bogon 32-bit ASNs visible in the Routing Table: 104 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 425 Number of addresses announced to Internet: 3106979328 Equivalent to 185 /8s, 48 /16s and 190 /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: 323293 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265390 Total APNIC prefixes after maximum aggregation: 78455 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256304 Unique aggregates announced from the APNIC address blocks: 105224 APNIC Region origin ASes present in the Internet Routing Table: 14746 APNIC Prefixes per ASN: 17.38 APNIC Region origin ASes announcing only one prefix: 4488 APNIC Region transit ASes present in the Internet Routing Table: 1998 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10300 Number of APNIC addresses announced to Internet: 749587200 Equivalent to 44 /8s, 173 /16s and 203 /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: 290371 Total ARIN prefixes after maximum aggregation: 132378 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 292002 Unique aggregates announced from the ARIN address blocks: 141844 ARIN Region origin ASes present in the Internet Routing Table: 19237 ARIN Prefixes per ASN: 15.18 ARIN Region origin ASes announcing only one prefix: 7058 ARIN Region transit ASes present in the Internet Routing Table: 1919 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5283 Number of ARIN addresses announced to Internet: 1349081856 Equivalent to 80 /8s, 105 /16s and 91 /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, 393216-402332 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: 277203 Total RIPE prefixes after maximum aggregation: 137000 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276314 Unique aggregates announced from the RIPE address blocks: 178887 RIPE Region origin ASes present in the Internet Routing Table: 29022 RIPE Prefixes per ASN: 9.52 RIPE Region origin ASes announcing only one prefix: 12095 RIPE Region transit ASes present in the Internet Routing Table: 4012 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 33 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12644 Number of RIPE addresses announced to Internet: 732206080 Equivalent to 43 /8s, 164 /16s and 148 /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: 124230 Total LACNIC prefixes after maximum aggregation: 30221 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120466 Unique aggregates announced from the LACNIC address blocks: 49416 LACNIC Region origin ASes present in the Internet Routing Table: 11274 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2646 LACNIC Region transit ASes present in the Internet Routing Table: 2541 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9243 Number of LACNIC addresses announced to Internet: 170794752 Equivalent to 10 /8s, 46 /16s and 31 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 34686 Total AfriNIC prefixes after maximum aggregation: 6795 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 47482 Unique aggregates announced from the AfriNIC address blocks: 14092 AfriNIC Region origin ASes present in the Internet Routing Table: 1952 AfriNIC Prefixes per ASN: 24.32 AfriNIC Region origin ASes announcing only one prefix: 711 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 89 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1316 Number of AfriNIC addresses announced to Internet: 105069056 Equivalent to 6 /8s, 67 /16s and 58 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & 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 12874 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4600 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3939 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3716 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3301 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2971 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 865 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2173 427 181 TATACOMM-AS TATA Communications formerly 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 13835 41099 5339 AMAZON-02, US 11492 4733 314 786 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3647 1320 82 SHAW, CA 22773 3344 3029 165 ASN-CXA-ALL-CCI-22773-RDC, US 174 3300 8769 858 COGENT-174, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3215 3858 435 GOOGLE-CLOUD-PLATFORM, US 4155 2942 229 1746 USDA-1, US 16625 2903 1223 2164 AKAMAI-AS, 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 7552 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3908 3395 123 AKAMAI-ASN1, NL 9009 3859 365 2176 M247, RO 12389 3112 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 584 TELLCOM-AS, TR 212238 2332 165 1696 CDNEXT, GB 203020 1641 209 772 HOSTROYALE, IN 13188 1605 100 37 TRIOLAN, UA 8452 1594 1852 14 TE-AS TE-AS, EG 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 12264 3270 577 UNINET, MX 10620 3482 472 1048 Telmex Colombia S.A., CO 13999 2527 511 349 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1370 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1183 371 22 Telefonica del Peru S.A.A., PE 11664 1087 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1055 67 375 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1018 2487 55 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 1770 660 28 RAYA-AS, EG 29571 1499 94 32 ORANGE-COTE-IVOIRE, CI 36992 1421 1501 377 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1241 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 972 520 42 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 570 82 3 KENET-AS, KE 15399 535 56 53 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 13835 41099 5339 AMAZON-02, US 9808 12874 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12264 3270 577 UNINET, MX 12479 7552 1711 149 UNI2-AS, ES 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4733 314 786 CABLEONE, US 18403 4600 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3939 1332 27 VIETEL-AS-AP Viettel Group, 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 12874 12759 CHINAMOBILE-CN China Mobile Communications Grou 8151 12264 11687 UNINET, MX 12479 7552 7403 UNI2-AS, ES 7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4600 4573 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4733 3947 CABLEONE, US 7552 3939 3912 VIETEL-AS-AP Viettel Group, VN 20940 3908 3785 AKAMAI-ASN1, NL 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 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /10:41 /11:92 /12:298 /13:576 /14:1198 /15:2126 /16:13758 /17:8157 /18:13426 /19:24440 /20:43819 /21:51619 /22:111878 /23:102787 /24:618748 /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 12479 6512 7552 UNI2-AS, ES 8151 6473 12264 UNINET, MX 11492 3552 4733 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3444 3647 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2496 3344 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2363 13835 AMAZON-02, US 30036 2307 2650 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2202 3482 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) ---------------------------------------------- 1:2422 2:1499 3:884 4:10 5:4774 6:158 7:6 8:1544 9:3 11:172 12:1254 13:460 14:2585 15:379 16:283 17:379 18:901 20:564 21:4 22:188 23:7761 24:2652 25:2 27:2800 29:19 31:3368 32:29 33:1 34:84 35:261 36:4287 37:4567 38:9282 39:982 40:262 41:4278 42:2067 43:2741 44:378 45:18657 46:5105 47:338 49:1948 50:2043 51:592 52:1555 54:322 55:1107 56:11 57:279 58:2269 59:1290 60:1175 61:2919 62:3010 63:1775 64:5577 65:2143 66:4763 67:3089 68:1068 69:3890 70:1038 71:626 72:2845 74:2794 75:1505 76:602 77:2767 78:1891 79:1734 80:2211 81:2067 82:3257 83:1442 84:1916 85:3450 86:1127 87:2139 88:1317 89:4471 90:775 91:8412 92:2764 93:2966 94:4143 95:4438 96:1444 97:310 98:955 99:707 100:71 101:1471 102:3897 103:32886 104:5272 105:760 106:876 107:2635 108:1255 109:4177 110:2250 111:3584 112:2458 113:1861 114:1977 115:2191 116:2086 117:2694 118:3043 119:1919 120:2200 121:1325 122:2809 123:2189 124:1704 125:2925 126:91 128:1584 129:962 130:1286 131:2057 132:780 133:450 134:1617 135:357 136:1470 137:1130 138:2830 139:1597 140:1616 141:1533 142:1912 143:1979 144:1195 145:577 146:2175 147:2102 148:2692 149:2981 150:1269 151:2392 152:2102 153:525 154:7516 155:1883 156:3028 157:1962 158:1384 159:2527 160:3602 161:1923 162:3898 163:2272 164:1877 165:2466 166:1528 167:2053 168:3892 169:776 170:5226 171:1004 172:4235 173:3386 174:904 175:1326 176:3742 177:4715 178:3991 179:2315 180:2732 181:4175 182:3594 183:2385 184:2059 185:21595 186:5314 187:4559 188:4288 189:4338 190:9526 191:1531 192:11302 193:9472 194:7790 195:5625 196:3269 197:3219 198:6082 199:8643 200:8078 201:6384 202:10368 203:10653 204:4563 205:3600 206:4507 207:3513 208:4273 209:5116 210:4668 211:2647 212:4599 213:3825 214:1039 215:51 216:6779 217:3301 218:1434 219:399 220:2143 221:1208 222:742 223:2825 End of report