IPv4 R&E Routing Table Report 23:05 GMT Sun 26 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: 1010148 Prefixes after maximum aggregation (per Origin AS): 392088 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498293 Number of IPv4 prefixes with a valid ROA: 581521 Number of IPv4 prefixes with an invalid ROA: 774 Number of IPv4 prefixes with no ROA: 427853 Total ASes present in the Internet Routing Table: 77382 Prefixes per ASN: 13.05 Origin-only ASes present in the Internet Routing Table: 66323 Origin ASes announcing only one prefix: 27080 Transit ASes present in the Internet Routing Table: 11059 Transit-only ASes present in the Internet Routing Table: 543 Paths with bogon ASNs present in the IPv4 Routing Table: 27 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: 1021 Number of instances of unregistered ASNs: 1050 Number of 32-bit ASNs allocated by the RIRs: 47816 Number of 32-bit ASNs visible in the Routing Table: 39161 Prefixes from 32-bit ASNs in the Routing Table: 214245 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 413 Number of addresses announced to Internet: 3111779328 Equivalent to 185 /8s, 121 /16s and 252 /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: 329677 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270549 Total APNIC prefixes after maximum aggregation: 80224 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 260374 Unique aggregates announced from the APNIC address blocks: 105730 APNIC Region origin ASes present in the Internet Routing Table: 14799 APNIC Prefixes per ASN: 17.59 APNIC Region origin ASes announcing only one prefix: 4468 APNIC Region transit ASes present in the Internet Routing Table: 2004 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: 10375 Number of APNIC addresses announced to Internet: 751682816 Equivalent to 44 /8s, 205 /16s and 197 /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: 298029 Total ARIN prefixes after maximum aggregation: 134839 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298758 Unique aggregates announced from the ARIN address blocks: 144651 ARIN Region origin ASes present in the Internet Routing Table: 19337 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7106 ARIN Region transit ASes present in the Internet Routing Table: 1908 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: 5385 Number of ARIN addresses announced to Internet: 1352229376 Equivalent to 80 /8s, 153 /16s and 98 /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: 280411 Total RIPE prefixes after maximum aggregation: 139050 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280191 Unique aggregates announced from the RIPE address blocks: 181390 RIPE Region origin ASes present in the Internet Routing Table: 29086 RIPE Prefixes per ASN: 9.63 RIPE Region origin ASes announcing only one prefix: 12105 RIPE Region transit ASes present in the Internet Routing Table: 4049 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: 12775 Number of RIPE addresses announced to Internet: 733264896 Equivalent to 43 /8s, 180 /16s and 188 /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: 124910 Total LACNIC prefixes after maximum aggregation: 30412 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121038 Unique aggregates announced from the LACNIC address blocks: 49461 LACNIC Region origin ASes present in the Internet Routing Table: 11311 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2678 LACNIC Region transit ASes present in the Internet Routing Table: 2539 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: 9283 Number of LACNIC addresses announced to Internet: 170725632 Equivalent to 10 /8s, 45 /16s and 17 /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: 35228 Total AfriNIC prefixes after maximum aggregation: 6876 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 49374 Unique aggregates announced from the AfriNIC address blocks: 16694 AfriNIC Region origin ASes present in the Internet Routing Table: 1979 AfriNIC Prefixes per ASN: 24.95 AfriNIC Region origin ASes announcing only one prefix: 723 AfriNIC Region transit ASes present in the Internet Routing Table: 378 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: 1343 Number of AfriNIC addresses announced to Internet: 103654400 Equivalent to 6 /8s, 45 /16s and 164 /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 13307 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6127 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4485 537 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4439 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3983 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3715 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3301 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3238 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2937 863 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2403 267 1875 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 14394 41103 5388 AMAZON-02, US 11492 4772 316 803 CABLEONE, US 22773 4300 3088 372 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3860 286 85 VIASAT-SP-BACKBONE, US 6327 3686 1320 82 SHAW, CA 396982 3278 4826 469 GOOGLE-CLOUD-PLATFORM, US 749 3218 54766 2469 DNIC-AS-00749, US 4155 3128 242 1747 USDA-1, US 16625 2864 1219 2145 AKAMAI-AS, US 36352 2854 231 908 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 7352 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3983 376 2268 M247, RO 20940 3897 3395 122 AKAMAI-ASN1, NL 12389 3141 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2509 177 1818 CDNEXT, GB 34984 2416 363 577 TELLCOM-AS, TR 203020 1721 206 1005 HOSTROYALE, IN 8452 1677 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 12460 3295 575 UNINET, MX 10620 3455 463 1098 Telmex Colombia S.A., CO 13999 2510 510 349 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1280 371 23 Telefonica del Peru S.A.A., PE 11664 1232 278 34 Techtel LMDS Comunicaciones Interactivas 22884 1057 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1024 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 1925 630 32 RAYA-AS, EG 36992 1513 1498 386 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 37069 1085 1096 13 MOBINIL, EG 36935 1067 523 47 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 568 82 3 KENET-AS, KE 15399 552 57 56 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 14394 41103 5388 AMAZON-02, US 9808 13307 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12460 3295 575 UNINET, MX 12479 7352 1711 149 UNI2-AS, ES 7545 6127 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4772 316 803 CABLEONE, US 9498 4485 537 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4439 347 24 FPT-AS-AP FPT Telecom Company, VN 22773 4300 3088 372 ASN-CXA-ALL-CCI-22773-RDC, US 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 13307 13190 CHINAMOBILE-CN China Mobile Communications Grou 8151 12460 11885 UNINET, MX 12479 7352 7203 UNI2-AS, ES 7545 6127 5537 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4439 4415 FPT-AS-AP FPT Telecom Company, VN 9498 4485 4172 BBIL-AP BHARTI Airtel Ltd., IN 11492 4772 3969 CABLEONE, US 7552 3983 3955 VIETEL-AS-AP Viettel Group, VN 22773 4300 3928 ASN-CXA-ALL-CCI-22773-RDC, 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 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 /16:13750 /17:8174 /18:13425 /19:24584 /20:44276 /21:51844 /22:112600 /23:104290 /24:632844 /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 6669 12460 UNINET, MX 12479 6311 7352 UNI2-AS, ES 11492 3586 4772 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3474 3686 SHAW, CA 7155 2819 3860 VIASAT-SP-BACKBONE, US 22773 2643 4300 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2428 14394 AMAZON-02, US 30036 2296 2638 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2210 3455 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 2:1524 3:960 4:10 5:4862 6:171 7:6 8:1513 9:6 11:172 12:1239 13:543 14:2651 15:402 16:303 17:387 18:907 20:579 21:4 22:189 23:8014 24:2561 25:2 27:2793 29:19 31:3347 32:31 33:1 34:84 35:275 36:4506 37:4551 38:9518 39:1098 40:454 41:4304 42:1977 43:2817 44:393 45:19239 46:5172 47:369 49:2107 50:2045 51:595 52:1630 54:357 55:1102 56:11 57:285 58:2311 59:1310 60:1189 61:2956 62:3085 63:1755 64:5834 65:2134 66:5600 67:3141 68:1477 69:4109 70:1042 71:629 72:2982 74:2856 75:1508 76:602 77:2763 78:1898 79:1750 80:2240 81:2115 82:3444 83:1467 84:1987 85:3573 86:1100 87:2132 88:1327 89:4515 90:815 91:8396 92:2797 93:2981 94:4155 95:4483 96:1467 97:312 98:949 99:754 100:71 101:1469 102:4204 103:32830 104:5426 105:776 106:896 107:2791 108:1199 109:4218 110:2260 111:3832 112:2717 113:1866 114:2072 115:2245 116:2111 117:3037 118:3050 119:2027 120:2317 121:1480 122:2808 123:2257 124:1706 125:2909 126:124 128:1558 129:958 130:1437 131:2189 132:785 133:461 134:1621 135:365 136:1488 137:1136 138:2818 139:1584 140:1640 141:1547 142:2199 143:2094 144:1304 145:629 146:2175 147:2120 148:2754 149:2890 150:1295 151:2608 152:2212 153:582 154:7965 155:2191 156:3299 157:2008 158:1449 159:2601 160:3637 161:1999 162:3972 163:2300 164:1953 165:2563 166:1515 167:2092 168:3785 169:772 170:5405 171:1059 172:4456 173:3426 174:904 175:1349 176:3755 177:4689 178:4298 179:2290 180:2887 181:4298 182:3755 183:2560 184:2056 185:21641 186:5364 187:4675 188:4394 189:4416 190:9731 191:1568 192:11368 193:9480 194:7831 195:5578 196:3255 197:3340 198:6091 199:8839 200:8070 201:6387 202:10453 203:10546 204:4605 205:3632 206:4350 207:3718 208:4241 209:5367 210:4664 211:2653 212:4897 213:3921 214:1036 215:53 216:7133 217:3351 218:1576 219:400 220:2199 221:1257 222:754 223:3113 End of report