IPv4 R&E Routing Table Report 23:05 GMT Thu 30 Oct, 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: 1011701 Prefixes after maximum aggregation (per Origin AS): 392448 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 499507 Number of IPv4 prefixes with a valid ROA: 583941 Number of IPv4 prefixes with an invalid ROA: 574 Number of IPv4 prefixes with no ROA: 427186 Total ASes present in the Internet Routing Table: 77342 Prefixes per ASN: 13.08 Origin-only ASes present in the Internet Routing Table: 66287 Origin ASes announcing only one prefix: 27063 Transit ASes present in the Internet Routing Table: 11055 Transit-only ASes present in the Internet Routing Table: 549 Paths with bogon ASNs present in the IPv4 Routing Table: 26 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1005 Number of instances of unregistered ASNs: 1034 Number of 32-bit ASNs allocated by the RIRs: 47832 Number of 32-bit ASNs visible in the Routing Table: 39155 Prefixes from 32-bit ASNs in the Routing Table: 214930 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 432 Number of addresses announced to Internet: 3112822528 Equivalent to 185 /8s, 137 /16s and 231 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 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: 330485 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271137 Total APNIC prefixes after maximum aggregation: 80407 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 260894 Unique aggregates announced from the APNIC address blocks: 106093 APNIC Region origin ASes present in the Internet Routing Table: 14807 APNIC Prefixes per ASN: 17.62 APNIC Region origin ASes announcing only one prefix: 4489 APNIC Region transit ASes present in the Internet Routing Table: 2006 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: 10392 Number of APNIC addresses announced to Internet: 751738880 Equivalent to 44 /8s, 206 /16s and 160 /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: 298702 Total ARIN prefixes after maximum aggregation: 134937 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 299204 Unique aggregates announced from the ARIN address blocks: 144811 ARIN Region origin ASes present in the Internet Routing Table: 19337 ARIN Prefixes per ASN: 15.47 ARIN Region origin ASes announcing only one prefix: 7115 ARIN Region transit ASes present in the Internet Routing Table: 1909 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5386 Number of ARIN addresses announced to Internet: 1353059328 Equivalent to 80 /8s, 166 /16s and 12 /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: 280634 Total RIPE prefixes after maximum aggregation: 139225 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280862 Unique aggregates announced from the RIPE address blocks: 181922 RIPE Region origin ASes present in the Internet Routing Table: 29077 RIPE Prefixes per ASN: 9.66 RIPE Region origin ASes announcing only one prefix: 12088 RIPE Region transit ASes present in the Internet Routing Table: 4043 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 27 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12778 Number of RIPE addresses announced to Internet: 733701376 Equivalent to 43 /8s, 187 /16s and 101 /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: 125080 Total LACNIC prefixes after maximum aggregation: 30404 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121175 Unique aggregates announced from the LACNIC address blocks: 49486 LACNIC Region origin ASes present in the Internet Routing Table: 11310 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2672 LACNIC Region transit ASes present in the Internet Routing Table: 2542 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9292 Number of LACNIC addresses announced to Internet: 170672640 Equivalent to 10 /8s, 44 /16s and 66 /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: 35143 Total AfriNIC prefixes after maximum aggregation: 6795 AfriNIC Deaggregation factor: 5.17 Prefixes being announced from the AfriNIC address blocks: 49134 Unique aggregates announced from the AfriNIC address blocks: 16817 AfriNIC Region origin ASes present in the Internet Routing Table: 1933 AfriNIC Prefixes per ASN: 25.42 AfriNIC Region origin ASes announcing only one prefix: 699 AfriNIC Region transit ASes present in the Internet Routing Table: 369 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1307 Number of AfriNIC addresses announced to Internet: 103389952 Equivalent to 6 /8s, 41 /16s and 155 /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 13384 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6124 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4499 537 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4419 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3985 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3716 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3309 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3252 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2936 864 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2482 272 1916 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 14420 41086 5377 AMAZON-02, US 11492 4772 316 800 CABLEONE, US 22773 4642 3110 403 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3686 1320 82 SHAW, CA 396982 3279 4826 470 GOOGLE-CLOUD-PLATFORM, US 749 3218 54766 2469 DNIC-AS-00749, US 4155 3138 243 1765 USDA-1, US 16625 2860 1218 2142 AKAMAI-AS, US 36352 2853 231 918 AS-COLOCROSSING, 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 7301 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4011 377 2284 M247, RO 20940 3892 3395 122 AKAMAI-ASN1, NL 12389 3149 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2531 178 1824 CDNEXT, GB 34984 2414 363 575 TELLCOM-AS, TR 203020 1708 205 1002 HOSTROYALE, IN 8452 1672 1852 14 TE-AS TE-AS, EG 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 12488 3301 570 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2510 511 350 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1375 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1278 371 23 Telefonica del Peru S.A.A., PE 11664 1254 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1056 67 361 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1026 2486 56 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 1963 630 32 RAYA-AS, EG 36992 1678 1509 399 ETISALAT-MISR, EG 29571 1284 102 52 ORANGE-COTE-IVOIRE, CI 24863 1262 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1119 523 47 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 563 82 3 KENET-AS, KE 37342 536 32 1 MOVITEL, MZ 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 14420 41086 5377 AMAZON-02, US 9808 13384 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12488 3301 570 UNINET, MX 12479 7301 1711 149 UNI2-AS, ES 7545 6124 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4772 316 800 CABLEONE, US 22773 4642 3110 403 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4499 537 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4419 347 24 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 13384 13267 CHINAMOBILE-CN China Mobile Communications Grou 8151 12488 11918 UNINET, MX 12479 7301 7152 UNI2-AS, ES 7545 6124 5534 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4419 4395 FPT-AS-AP FPT Telecom Company, VN 22773 4642 4239 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4499 4187 BBIL-AP BHARTI Airtel Ltd., IN 11492 4772 3972 CABLEONE, US 7552 3985 3957 VIETEL-AS-AP Viettel Group, VN 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 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, 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 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 397015 UNALLOCATED 8.44.246.0/24 3356 LEVEL3, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /11:93 /12:300 /13:579 /14:1196 /15:2122 /16:13757 /17:8173 /18:13446 /19:24614 /20:44267 /21:51872 /22:112619 /23:104494 /24:634098 /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 6685 12488 UNINET, MX 12479 6260 7301 UNI2-AS, ES 11492 3585 4772 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3474 3686 SHAW, CA 22773 2985 4642 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2427 14420 AMAZON-02, US 30036 2304 2646 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3456 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) ---------------------------------------------- 1:2437 2:1520 3:967 4:10 5:4903 6:171 7:6 8:1507 9:6 11:172 12:1231 13:555 14:2657 15:401 16:303 17:386 18:909 20:580 21:4 22:188 23:7997 24:2558 25:2 27:2793 29:19 31:3357 32:31 33:1 34:84 35:275 36:4512 37:4547 38:9341 39:1169 40:469 41:4094 42:1957 43:2825 44:393 45:19244 46:5186 47:369 49:2138 50:2048 51:595 52:1628 54:357 55:1105 56:11 57:288 58:2315 59:1316 60:1193 61:2987 62:3100 63:1760 64:5862 65:2128 66:5875 67:3233 68:1487 69:4119 70:1041 71:629 72:2987 74:2863 75:1503 76:595 77:2765 78:1901 79:1783 80:2252 81:2114 82:3559 83:1469 84:1990 85:3582 86:1108 87:2143 88:1327 89:4517 90:813 91:8394 92:2805 93:2990 94:4162 95:4531 96:1469 97:312 98:947 99:751 100:71 101:1474 102:4123 103:32756 104:5451 105:774 106:905 107:2791 108:1195 109:4215 110:2257 111:3856 112:2756 113:1892 114:2083 115:2247 116:2115 117:3073 118:3058 119:2030 120:2343 121:1492 122:2811 123:2242 124:1709 125:2919 126:124 128:1569 129:958 130:1438 131:2198 132:777 133:461 134:1622 135:365 136:1491 137:1137 138:2823 139:1584 140:1675 141:1565 142:2195 143:2107 144:1306 145:627 146:2178 147:2127 148:2772 149:2820 150:1299 151:2645 152:2265 153:583 154:8117 155:2207 156:3221 157:1999 158:1392 159:2603 160:3672 161:1999 162:3977 163:2309 164:1949 165:2556 166:1516 167:2124 168:3790 169:759 170:5424 171:1062 172:4482 173:3427 174:905 175:1349 176:3751 177:4745 178:4310 179:2293 180:2893 181:4304 182:3774 183:2580 184:2050 185:21661 186:5394 187:4699 188:4400 189:4457 190:9707 191:1569 192:11392 193:9491 194:7838 195:5576 196:3199 197:3335 198:6111 199:8842 200:8083 201:6382 202:10429 203:10611 204:4597 205:3645 206:4354 207:3708 208:4242 209:5352 210:4698 211:2668 212:4880 213:3957 214:1039 215:53 216:7138 217:3391 218:1578 219:400 220:2198 221:1265 222:763 223:3125 End of report