IPv4 R&E Routing Table Report 23:05 GMT Wed 12 Nov, 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: 1009659 Prefixes after maximum aggregation (per Origin AS): 391315 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 500685 Number of IPv4 prefixes with a valid ROA: 585915 Number of IPv4 prefixes with an invalid ROA: 650 Number of IPv4 prefixes with no ROA: 423094 Total ASes present in the Internet Routing Table: 77418 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66327 Origin ASes announcing only one prefix: 27079 Transit ASes present in the Internet Routing Table: 11091 Transit-only ASes present in the Internet Routing Table: 548 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: 964 Number of instances of unregistered ASNs: 993 Number of 32-bit ASNs allocated by the RIRs: 47971 Number of 32-bit ASNs visible in the Routing Table: 39237 Prefixes from 32-bit ASNs in the Routing Table: 215340 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: 407 Number of addresses announced to Internet: 3102667008 Equivalent to 184 /8s, 238 /16s and 241 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 331107 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270960 Total APNIC prefixes after maximum aggregation: 80076 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 261016 Unique aggregates announced from the APNIC address blocks: 105958 APNIC Region origin ASes present in the Internet Routing Table: 14812 APNIC Prefixes per ASN: 17.62 APNIC Region origin ASes announcing only one prefix: 4480 APNIC Region transit ASes present in the Internet Routing Table: 1997 Average APNIC Region AS path length visible: 4.7 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: 748432896 Equivalent to 44 /8s, 156 /16s and 46 /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: 296456 Total ARIN prefixes after maximum aggregation: 133553 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296420 Unique aggregates announced from the ARIN address blocks: 145234 ARIN Region origin ASes present in the Internet Routing Table: 19356 ARIN Prefixes per ASN: 15.31 ARIN Region origin ASes announcing only one prefix: 7116 ARIN Region transit ASes present in the Internet Routing Table: 1931 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: 5407 Number of ARIN addresses announced to Internet: 1344942336 Equivalent to 80 /8s, 42 /16s and 49 /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: 280849 Total RIPE prefixes after maximum aggregation: 139405 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281249 Unique aggregates announced from the RIPE address blocks: 182283 RIPE Region origin ASes present in the Internet Routing Table: 29092 RIPE Prefixes per ASN: 9.67 RIPE Region origin ASes announcing only one prefix: 12099 RIPE Region transit ASes present in the Internet Routing Table: 4047 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12801 Number of RIPE addresses announced to Internet: 735313408 Equivalent to 43 /8s, 211 /16s and 254 /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: 124973 Total LACNIC prefixes after maximum aggregation: 30768 LACNIC Deaggregation factor: 4.06 Prefixes being announced from the LACNIC address blocks: 121031 Unique aggregates announced from the LACNIC address blocks: 49606 LACNIC Region origin ASes present in the Internet Routing Table: 11309 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2667 LACNIC Region transit ASes present in the Internet Routing Table: 2547 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: 9296 Number of LACNIC addresses announced to Internet: 170733568 Equivalent to 10 /8s, 45 /16s and 48 /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: 35457 Total AfriNIC prefixes after maximum aggregation: 6849 AfriNIC Deaggregation factor: 5.18 Prefixes being announced from the AfriNIC address blocks: 49536 Unique aggregates announced from the AfriNIC address blocks: 17243 AfriNIC Region origin ASes present in the Internet Routing Table: 1978 AfriNIC Prefixes per ASN: 25.04 AfriNIC Region origin ASes announcing only one prefix: 717 AfriNIC Region transit ASes present in the Internet Routing Table: 376 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: 1341 Number of AfriNIC addresses announced to Internet: 103024128 Equivalent to 6 /8s, 36 /16s and 6 /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 13390 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6099 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4521 538 317 BBIL-AP BHARTI Airtel Ltd., IN 18403 4398 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3974 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3717 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3319 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2937 863 509 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2485 272 1919 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 14185 37263 5351 AMAZON-02, US 11492 4785 317 804 CABLEONE, US 22773 4661 3093 392 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3290 4827 473 GOOGLE-CLOUD-PLATFORM, US 749 3215 54766 2466 DNIC-AS-00749, US 16625 2891 1235 2158 AKAMAI-AS, US 36352 2850 231 913 AS-COLOCROSSING, US 30036 2660 367 285 MEDIACOM-ENTERPRISE-BUSINESS, 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 7292 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4023 381 2287 M247, RO 20940 3881 3395 125 AKAMAI-ASN1, NL 12389 3148 2317 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2480 175 1783 CDNEXT, GB 34984 2417 363 575 TELLCOM-AS, TR 8452 1685 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1469 167 845 HOSTROYALE, IN 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 12538 3302 579 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2504 511 347 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 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 1275 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1027 2486 56 TIM SA, BR 18881 911 1127 31 TELEFONICA BRASIL S.A, 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 1854 630 32 RAYA-AS, EG 36992 1680 1509 397 ETISALAT-MISR, EG 24863 1266 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1104 523 34 Vodafone-, EG 37069 1086 1112 11 MOBINIL, EG 29571 1070 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 565 82 3 KENET-AS, KE 15399 551 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 14185 37263 5351 AMAZON-02, US 9808 13390 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12538 3302 579 UNINET, MX 12479 7292 1711 149 UNI2-AS, ES 7545 6099 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4785 317 804 CABLEONE, US 22773 4661 3093 392 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4521 538 317 BBIL-AP BHARTI Airtel Ltd., IN 18403 4398 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 13390 13273 CHINAMOBILE-CN China Mobile Communications Grou 8151 12538 11959 UNINET, MX 12479 7292 7143 UNI2-AS, ES 7545 6099 5511 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4398 4374 FPT-AS-AP FPT Telecom Company, VN 22773 4661 4269 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4521 4204 BBIL-AP BHARTI Airtel Ltd., IN 11492 4785 3981 CABLEONE, US 7552 3974 3946 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 3737 AS-PTD, 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 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 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 /8:18 /9:14 /10:41 /11:94 /12:298 /13:578 /14:1193 /15:2091 /16:13643 /17:8146 /18:13407 /19:24588 /20:44311 /21:51848 /22:112553 /23:104609 /24:632227 /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 6735 12538 UNINET, MX 12479 6234 7292 UNI2-AS, ES 11492 3598 4785 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 2981 4661 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2414 14185 AMAZON-02, US 30036 2316 2660 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) ---------------------------------------------- 1:2442 2:1529 3:959 4:10 5:4928 6:189 7:6 8:1515 9:6 11:172 12:1233 13:538 14:2632 15:409 16:303 17:387 18:906 20:584 21:4 22:188 23:8035 24:2562 25:2 27:2786 29:19 31:3354 32:31 33:1 34:84 35:275 36:4543 37:4566 38:9298 39:1174 40:444 41:4437 42:1944 43:2839 44:400 45:19223 46:5151 47:373 49:2152 50:2053 51:595 52:1624 54:352 55:1105 56:11 57:289 58:2313 59:1318 60:1190 61:3015 62:3079 63:1734 64:5897 65:2114 66:5877 67:3236 68:1490 69:4105 70:1039 71:625 72:2997 74:2891 75:1514 76:600 77:2762 78:1908 79:1781 80:2272 81:2110 82:3616 83:1469 84:2000 85:3576 86:1103 87:2130 88:1327 89:4531 90:838 91:8385 92:2800 93:2984 94:4138 95:4530 96:1456 97:311 98:953 99:762 100:68 101:1339 102:4235 103:32714 104:5458 105:778 106:912 107:2799 108:1192 109:4220 110:2250 111:3855 112:2753 113:1889 114:2081 115:2245 116:2123 117:3094 118:3060 119:2045 120:2345 121:1502 122:2847 123:2268 124:1644 125:2926 126:125 128:1576 129:961 130:1484 131:2232 132:777 133:461 134:1625 135:366 136:1492 137:1135 138:2854 139:1595 140:1699 141:1555 142:2253 143:2136 144:1334 145:634 146:2173 147:2110 148:2774 149:2846 150:1295 151:2643 152:2264 153:598 154:8132 155:2234 156:3251 157:2205 158:1407 159:2645 160:3673 161:2003 162:3976 163:2328 164:1955 165:2559 166:1324 167:2122 168:3825 169:778 170:5446 171:1091 172:4500 173:3428 174:910 175:1352 176:3762 177:4705 178:4289 179:2278 180:2894 181:4324 182:3785 183:2581 184:2060 185:21658 186:5413 187:4718 188:4390 189:4429 190:9684 191:1513 192:11409 193:9491 194:7839 195:5582 196:3254 197:3345 198:6061 199:6099 200:8058 201:6381 202:10437 203:10549 204:4585 205:3656 206:4354 207:3713 208:4271 209:5320 210:4705 211:2647 212:4879 213:3996 214:1039 215:54 216:7133 217:3339 218:1572 219:402 220:2201 221:1265 222:762 223:3125 End of report