IPv4 R&E Routing Table Report 23:05 GMT Sat 25 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: 1009901 Prefixes after maximum aggregation (per Origin AS): 391993 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498187 Number of IPv4 prefixes with a valid ROA: 581466 Number of IPv4 prefixes with an invalid ROA: 550 Number of IPv4 prefixes with no ROA: 427885 Total ASes present in the Internet Routing Table: 77375 Prefixes per ASN: 13.05 Origin-only ASes present in the Internet Routing Table: 66313 Origin ASes announcing only one prefix: 27087 Transit ASes present in the Internet Routing Table: 11062 Transit-only ASes present in the Internet Routing Table: 543 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: 1022 Number of instances of unregistered ASNs: 1051 Number of 32-bit ASNs allocated by the RIRs: 47809 Number of 32-bit ASNs visible in the Routing Table: 39164 Prefixes from 32-bit ASNs in the Routing Table: 214270 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: 420 Number of addresses announced to Internet: 3111660544 Equivalent to 185 /8s, 120 /16s and 44 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 329605 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270419 Total APNIC prefixes after maximum aggregation: 80178 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 260261 Unique aggregates announced from the APNIC address blocks: 105654 APNIC Region origin ASes present in the Internet Routing Table: 14801 APNIC Prefixes per ASN: 17.58 APNIC Region origin ASes announcing only one prefix: 4479 APNIC Region transit ASes present in the Internet Routing Table: 2000 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: 10381 Number of APNIC addresses announced to Internet: 751557376 Equivalent to 44 /8s, 203 /16s and 219 /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: 297871 Total ARIN prefixes after maximum aggregation: 134806 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298674 Unique aggregates announced from the ARIN address blocks: 144626 ARIN Region origin ASes present in the Internet Routing Table: 19336 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7104 ARIN Region transit ASes present in the Internet Routing Table: 1905 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: 1352239104 Equivalent to 80 /8s, 153 /16s and 136 /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: 280373 Total RIPE prefixes after maximum aggregation: 139039 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280153 Unique aggregates announced from the RIPE address blocks: 181361 RIPE Region origin ASes present in the Internet Routing Table: 29081 RIPE Prefixes per ASN: 9.63 RIPE Region origin ASes announcing only one prefix: 12101 RIPE Region transit ASes present in the Internet Routing Table: 4054 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 37 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12774 Number of RIPE addresses announced to Internet: 733241344 Equivalent to 43 /8s, 180 /16s and 96 /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: 124970 Total LACNIC prefixes after maximum aggregation: 30414 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121098 Unique aggregates announced from the LACNIC address blocks: 49479 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: 2680 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: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9282 Number of LACNIC addresses announced to Internet: 170747904 Equivalent to 10 /8s, 45 /16s and 104 /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: 35246 Total AfriNIC prefixes after maximum aggregation: 6872 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 49295 Unique aggregates announced from the AfriNIC address blocks: 16698 AfriNIC Region origin ASes present in the Internet Routing Table: 1977 AfriNIC Prefixes per ASN: 24.93 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: 1342 Number of AfriNIC addresses announced to Internet: 103650560 Equivalent to 6 /8s, 45 /16s and 149 /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 4480 536 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4416 347 25 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 3299 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3238 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2934 863 503 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 14380 41103 5380 AMAZON-02, US 11492 4772 316 803 CABLEONE, US 22773 4268 3086 373 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 3219 54766 2470 DNIC-AS-00749, US 4155 3123 242 1745 USDA-1, US 16625 2873 1224 2151 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 7351 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3983 376 2268 M247, RO 20940 3900 3395 124 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 1674 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 12461 3295 574 UNINET, MX 10620 3456 463 1099 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 1017 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 36935 1101 521 44 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 569 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 14380 41103 5380 AMAZON-02, US 9808 13307 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12461 3295 574 UNINET, MX 12479 7351 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 4480 536 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4416 347 25 FPT-AS-AP FPT Telecom Company, VN 22773 4268 3086 373 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 12461 11887 UNINET, MX 12479 7351 7202 UNI2-AS, ES 7545 6127 5537 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4416 4391 FPT-AS-AP FPT Telecom Company, VN 9498 4480 4169 BBIL-AP BHARTI Airtel Ltd., IN 11492 4772 3969 CABLEONE, US 7552 3983 3955 VIETEL-AS-AP Viettel Group, VN 22773 4268 3895 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 /14:1195 /15:2122 /16:13749 /17:8175 /18:13423 /19:24577 /20:44290 /21:51856 /22:112610 /23:104286 /24:632575 /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 12461 UNINET, MX 12479 6310 7351 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 2627 4268 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2427 14380 AMAZON-02, US 30036 2296 2638 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) ---------------------------------------------- 1:2431 2:1528 3:956 4:10 5:4874 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 23:8019 24:2559 25:2 27:2794 29:19 31:3351 32:31 33:1 34:84 35:275 36:4507 37:4551 38:9532 39:1097 40:453 41:4301 42:1952 43:2813 44:396 45:19218 46:5171 47:369 49:2111 50:2043 51:595 52:1630 54:357 55:1099 56:11 57:285 58:2309 59:1306 60:1189 61:2955 62:3084 63:1755 64:5834 65:2133 66:5596 67:3143 68:1474 69:4108 70:1042 71:628 72:2965 74:2855 75:1507 76:600 77:2754 78:1898 79:1749 80:2239 81:2114 82:3445 83:1465 84:1987 85:3571 86:1098 87:2131 88:1327 89:4514 90:814 91:8394 92:2798 93:2982 94:4154 95:4484 96:1467 97:313 98:949 99:754 100:71 101:1475 102:4201 103:32742 104:5427 105:769 106:896 107:2775 108:1198 109:4214 110:2258 111:3826 112:2722 113:1866 114:2070 115:2246 116:2106 117:3033 118:3059 119:2024 120:2317 121:1482 122:2806 123:2255 124:1706 125:2910 126:124 128:1561 129:958 130:1427 131:2192 132:785 133:461 134:1623 135:365 136:1494 137:1132 138:2815 139:1577 140:1639 141:1546 142:2203 143:2081 144:1294 145:629 146:2176 147:2121 148:2753 149:2888 150:1290 151:2611 152:2212 153:582 154:7962 155:2193 156:3224 157:2004 158:1446 159:2604 160:3637 161:2002 162:3970 163:2298 164:1948 165:2559 166:1512 167:2101 168:3793 169:773 170:5405 171:1059 172:4456 173:3425 174:904 175:1344 176:3755 177:4706 178:4296 179:2288 180:2876 181:4299 182:3750 183:2560 184:2055 185:21642 186:5366 187:4675 188:4391 189:4414 190:9730 191:1561 192:11361 193:9471 194:7834 195:5573 196:3254 197:3337 198:6090 199:8833 200:8076 201:6387 202:10441 203:10605 204:4605 205:3621 206:4351 207:3716 208:4240 209:5366 210:4685 211:2688 212:4897 213:3920 214:1035 215:53 216:7130 217:3352 218:1575 219:400 220:2200 221:1257 222:753 223:3112 End of report