IPv4 R&E Routing Table Report 23:05 GMT Tue 04 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: 1009163 Prefixes after maximum aggregation (per Origin AS): 391063 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 500059 Number of IPv4 prefixes with a valid ROA: 584483 Number of IPv4 prefixes with an invalid ROA: 597 Number of IPv4 prefixes with no ROA: 424083 Total ASes present in the Internet Routing Table: 77418 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66338 Origin ASes announcing only one prefix: 27081 Transit ASes present in the Internet Routing Table: 11080 Transit-only ASes present in the Internet Routing Table: 556 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: 1004 Number of instances of unregistered ASNs: 1033 Number of 32-bit ASNs allocated by the RIRs: 47882 Number of 32-bit ASNs visible in the Routing Table: 39219 Prefixes from 32-bit ASNs in the Routing Table: 215304 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: 411 Number of addresses announced to Internet: 3100137472 Equivalent to 184 /8s, 200 /16s and 88 /24s Percentage of available address space announced: 83.7 Percentage of allocated address space announced: 83.7 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: 331051 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271092 Total APNIC prefixes after maximum aggregation: 80358 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 261005 Unique aggregates announced from the APNIC address blocks: 106167 APNIC Region origin ASes present in the Internet Routing Table: 14808 APNIC Prefixes per ASN: 17.63 APNIC Region origin ASes announcing only one prefix: 4488 APNIC Region transit ASes present in the Internet Routing Table: 2010 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: 10391 Number of APNIC addresses announced to Internet: 751805696 Equivalent to 44 /8s, 207 /16s and 165 /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: 295693 Total ARIN prefixes after maximum aggregation: 133346 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296077 Unique aggregates announced from the ARIN address blocks: 145151 ARIN Region origin ASes present in the Internet Routing Table: 19353 ARIN Prefixes per ASN: 15.30 ARIN Region origin ASes announcing only one prefix: 7117 ARIN Region transit ASes present in the Internet Routing Table: 1912 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: 5402 Number of ARIN addresses announced to Internet: 1338629376 Equivalent to 79 /8s, 201 /16s and 221 /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: 280638 Total RIPE prefixes after maximum aggregation: 139341 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281020 Unique aggregates announced from the RIPE address blocks: 182121 RIPE Region origin ASes present in the Internet Routing Table: 29094 RIPE Prefixes per ASN: 9.66 RIPE Region origin ASes announcing only one prefix: 12097 RIPE Region transit ASes present in the Internet Routing Table: 4045 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: 12792 Number of RIPE addresses announced to Internet: 735389184 Equivalent to 43 /8s, 213 /16s and 38 /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: 125287 Total LACNIC prefixes after maximum aggregation: 30406 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121363 Unique aggregates announced from the LACNIC address blocks: 49469 LACNIC Region origin ASes present in the Internet Routing Table: 11305 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2659 LACNIC Region transit ASes present in the Internet Routing Table: 2548 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 39 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9292 Number of LACNIC addresses announced to Internet: 170695424 Equivalent to 10 /8s, 44 /16s and 155 /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: 35449 Total AfriNIC prefixes after maximum aggregation: 6939 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 49287 Unique aggregates announced from the AfriNIC address blocks: 16791 AfriNIC Region origin ASes present in the Internet Routing Table: 1980 AfriNIC Prefixes per ASN: 24.89 AfriNIC Region origin ASes announcing only one prefix: 720 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: 1342 Number of AfriNIC addresses announced to Internet: 103397376 Equivalent to 6 /8s, 41 /16s and 184 /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 13386 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6097 833 587 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4507 538 315 BBIL-AP BHARTI Airtel Ltd., IN 18403 4405 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3980 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3718 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3315 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2936 864 504 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 14264 37243 5367 AMAZON-02, US 11492 4776 317 802 CABLEONE, US 22773 4641 3110 403 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3688 1320 82 SHAW, CA 396982 3283 4827 473 GOOGLE-CLOUD-PLATFORM, US 749 3218 54766 2469 DNIC-AS-00749, US 16625 2889 1235 2156 AKAMAI-AS, US 36352 2855 231 915 AS-COLOCROSSING, US 30036 2653 365 304 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 7281 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4018 378 2285 M247, RO 20940 3896 3395 124 AKAMAI-ASN1, NL 12389 3150 2317 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2535 178 1827 CDNEXT, GB 34984 2415 363 574 TELLCOM-AS, TR 8452 1654 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1579 184 909 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 12504 3299 573 UNINET, MX 10620 3455 463 1098 Telmex Colombia S.A., CO 13999 2503 511 350 Mega Cable, S.A. de C.V., MX 11830 1991 369 64 Instituto Costarricense de Electricidad y 28573 1376 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1294 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1276 371 23 Telefonica del Peru S.A.A., PE 22884 1057 67 362 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 1861 630 32 RAYA-AS, EG 36992 1679 1509 397 ETISALAT-MISR, EG 29571 1286 102 52 ORANGE-COTE-IVOIRE, CI 24863 1264 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 566 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 14264 37243 5367 AMAZON-02, US 9808 13386 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12504 3299 573 UNINET, MX 12479 7281 1711 149 UNI2-AS, ES 7545 6097 833 587 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4776 317 802 CABLEONE, US 22773 4641 3110 403 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4507 538 315 BBIL-AP BHARTI Airtel Ltd., IN 18403 4405 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 13386 13269 CHINAMOBILE-CN China Mobile Communications Grou 8151 12504 11931 UNINET, MX 12479 7281 7132 UNI2-AS, ES 7545 6097 5510 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4405 4381 FPT-AS-AP FPT Telecom Company, VN 22773 4641 4238 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4507 4192 BBIL-AP BHARTI Airtel Ltd., IN 11492 4776 3974 CABLEONE, US 7552 3980 3952 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 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 /11:94 /12:298 /13:577 /14:1193 /15:2088 /16:13644 /17:8143 /18:13429 /19:24575 /20:44246 /21:51861 /22:112508 /23:104563 /24:631873 /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 6708 12504 UNINET, MX 12479 6242 7281 UNI2-AS, ES 11492 3589 4776 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3476 3688 SHAW, CA 22773 2984 4641 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2439 14264 AMAZON-02, US 30036 2310 2653 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) ---------------------------------------------- 1:2435 2:1522 3:968 4:10 5:4914 6:173 7:6 8:1505 9:6 11:172 12:1241 13:546 14:2648 15:403 16:303 17:387 18:911 20:581 21:4 22:188 23:8041 24:2559 25:2 27:2788 29:19 31:3359 32:31 33:1 34:84 35:275 36:4510 37:4565 38:9358 39:1174 40:465 41:4316 42:1939 43:2826 44:402 45:19270 46:5185 47:367 49:2154 50:2047 51:595 52:1628 54:357 55:1095 56:11 57:288 58:2313 59:1321 60:1187 61:3016 62:3102 63:1754 64:5881 65:2130 66:5868 67:3237 68:1485 69:4115 70:1039 71:627 72:2984 74:2874 75:1508 76:601 77:2766 78:1907 79:1781 80:2263 81:2121 82:3570 83:1469 84:1999 85:3575 86:1106 87:2140 88:1327 89:4517 90:813 91:8386 92:2808 93:2988 94:4165 95:4531 96:1462 97:316 98:948 99:763 100:70 101:1479 102:4205 103:32737 104:5458 105:776 106:910 107:2790 108:1192 109:4207 110:2261 111:3854 112:2758 113:1894 114:2085 115:2245 116:2129 117:3095 118:3052 119:2031 120:2344 121:1497 122:2851 123:2255 124:1709 125:2921 126:124 128:1571 129:957 130:1451 131:2210 132:775 133:461 134:1622 135:366 136:1493 137:1135 138:2843 139:1587 140:1677 141:1575 142:2198 143:2131 144:1321 145:630 146:2180 147:2113 148:2768 149:2831 150:1292 151:2643 152:2275 153:584 154:8111 155:2212 156:3157 157:2023 158:1389 159:2624 160:3665 161:2001 162:3987 163:2321 164:1953 165:2556 166:1320 167:2122 168:3810 169:776 170:5433 171:1064 172:4463 173:3428 174:906 175:1351 176:3751 177:4746 178:4299 179:2293 180:2893 181:4306 182:3786 183:2604 184:2060 185:21660 186:5412 187:4733 188:4400 189:4469 190:9704 191:1588 192:11412 193:9496 194:7844 195:5576 196:3268 197:3348 198:6052 199:6100 200:8071 201:6365 202:10431 203:10560 204:4596 205:3641 206:4338 207:3711 208:4242 209:5315 210:4693 211:2648 212:4885 213:3965 214:1035 215:53 216:7129 217:3387 218:1574 219:401 220:2199 221:1266 222:762 223:3119 End of report