IPv4 R&E Routing Table Report 23:05 GMT Mon 13 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: 1006600 Prefixes after maximum aggregation (per Origin AS): 390860 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 497382 Number of IPv4 prefixes with a valid ROA: 577471 Number of IPv4 prefixes with an invalid ROA: 761 Number of IPv4 prefixes with no ROA: 428368 Total ASes present in the Internet Routing Table: 77353 Prefixes per ASN: 13.01 Origin-only ASes present in the Internet Routing Table: 66290 Origin ASes announcing only one prefix: 27053 Transit ASes present in the Internet Routing Table: 11063 Transit-only ASes present in the Internet Routing Table: 554 Paths with bogon ASNs present in the IPv4 Routing Table: 67 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: 1058 Number of instances of unregistered ASNs: 1124 Number of 32-bit ASNs allocated by the RIRs: 47694 Number of 32-bit ASNs visible in the Routing Table: 39110 Prefixes from 32-bit ASNs in the Routing Table: 213201 Number of bogon 32-bit ASNs visible in the Routing Table: 152 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 448 Number of addresses announced to Internet: 3111132928 Equivalent to 185 /8s, 112 /16s and 31 /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: 327851 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270288 Total APNIC prefixes after maximum aggregation: 79949 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 259970 Unique aggregates announced from the APNIC address blocks: 105911 APNIC Region origin ASes present in the Internet Routing Table: 14801 APNIC Prefixes per ASN: 17.56 APNIC Region origin ASes announcing only one prefix: 4487 APNIC Region transit ASes present in the Internet Routing Table: 1991 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: 10380 Number of APNIC addresses announced to Internet: 751650816 Equivalent to 44 /8s, 205 /16s and 72 /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: 295619 Total ARIN prefixes after maximum aggregation: 134227 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 296696 Unique aggregates announced from the ARIN address blocks: 143976 ARIN Region origin ASes present in the Internet Routing Table: 19314 ARIN Prefixes per ASN: 15.36 ARIN Region origin ASes announcing only one prefix: 7095 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: 5355 Number of ARIN addresses announced to Internet: 1352365568 Equivalent to 80 /8s, 155 /16s and 118 /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: 279769 Total RIPE prefixes after maximum aggregation: 138783 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279753 Unique aggregates announced from the RIPE address blocks: 181181 RIPE Region origin ASes present in the Internet Routing Table: 29071 RIPE Prefixes per ASN: 9.62 RIPE Region origin ASes announcing only one prefix: 12099 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: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12760 Number of RIPE addresses announced to Internet: 732500480 Equivalent to 43 /8s, 169 /16s and 18 /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: 124904 Total LACNIC prefixes after maximum aggregation: 30350 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121039 Unique aggregates announced from the LACNIC address blocks: 49401 LACNIC Region origin ASes present in the Internet Routing Table: 11305 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2658 LACNIC Region transit ASes present in the Internet Routing Table: 2538 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9278 Number of LACNIC addresses announced to Internet: 170691328 Equivalent to 10 /8s, 44 /16s and 139 /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: 34962 Total AfriNIC prefixes after maximum aggregation: 6849 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 48694 Unique aggregates announced from the AfriNIC address blocks: 16520 AfriNIC Region origin ASes present in the Internet Routing Table: 1971 AfriNIC Prefixes per ASN: 24.71 AfriNIC Region origin ASes announcing only one prefix: 714 AfriNIC Region transit ASes present in the Internet Routing Table: 379 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: 1337 Number of AfriNIC addresses announced to Internet: 103685888 Equivalent to 6 /8s, 46 /16s and 31 /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 13734 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6182 834 601 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4422 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3972 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3687 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3305 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3140 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2929 863 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2512 516 1636 HUTCHISON-AS-AP HGC Global Communications 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 14273 40986 5346 AMAZON-02, US 11492 4756 321 791 CABLEONE, US 22773 4118 3077 365 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3684 1320 82 SHAW, CA 396982 3275 4824 466 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3104 240 1741 USDA-1, US 174 3056 8763 850 COGENT-174, US 16625 2903 1238 2170 AKAMAI-AS, 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 7396 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3975 373 2242 M247, RO 20940 3918 3395 124 AKAMAI-ASN1, NL 12389 3104 2310 840 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2519 180 1832 CDNEXT, GB 34984 2414 363 575 TELLCOM-AS, TR 203020 1686 198 996 HOSTROYALE, IN 8452 1644 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 12365 3281 576 UNINET, MX 10620 3476 468 1086 Telmex Colombia S.A., CO 13999 2529 511 346 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1270 371 23 Telefonica del Peru S.A.A., PE 11664 1227 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1060 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 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 1767 594 28 RAYA-AS, EG 36992 1512 1498 385 ETISALAT-MISR, EG 29571 1284 102 52 ORANGE-COTE-IVOIRE, CI 24863 1250 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1085 1096 13 MOBINIL, EG 36935 1010 523 47 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 571 82 3 KENET-AS, KE 15399 551 57 54 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 14273 40986 5346 AMAZON-02, US 9808 13734 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12365 3281 576 UNINET, MX 12479 7396 1711 149 UNI2-AS, ES 7545 6182 834 601 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4756 321 791 CABLEONE, US 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4422 347 25 FPT-AS-AP FPT Telecom Company, VN 22773 4118 3077 365 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 13734 13617 CHINAMOBILE-CN China Mobile Communications Grou 8151 12365 11789 UNINET, MX 12479 7396 7247 UNI2-AS, ES 7545 6182 5581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4422 4397 FPT-AS-AP FPT Telecom Company, VN 9498 4477 4165 BBIL-AP BHARTI Airtel Ltd., IN 11492 4756 3965 CABLEONE, US 7552 3972 3944 VIETEL-AS-AP Viettel Group, VN 20940 3918 3794 AKAMAI-ASN1, NL 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 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 397015 UNALLOCATED 8.44.246.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 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 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 /14:1197 /15:2122 /16:13745 /17:8142 /18:13398 /19:24558 /20:44172 /21:51787 /22:112354 /23:103964 /24:630118 /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 6587 12365 UNINET, MX 12479 6363 7396 UNI2-AS, ES 11492 3569 4756 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3472 3684 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2586 4118 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2389 14273 AMAZON-02, US 30036 2303 2642 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3476 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) ---------------------------------------------- 1:2428 2:1527 3:939 4:10 5:4851 6:170 7:6 8:1531 9:6 11:172 12:1240 13:562 14:2652 15:402 16:304 17:388 18:907 20:575 21:4 22:188 23:7934 24:2646 25:2 27:2795 29:19 31:3353 32:31 33:1 34:84 35:274 36:4468 37:4539 38:9503 39:1098 40:471 41:4275 42:1965 43:2794 44:392 45:19188 46:5168 47:367 49:2090 50:2052 51:595 52:1592 54:359 55:1091 56:11 57:282 58:2317 59:1320 60:1189 61:2950 62:3075 63:1762 64:5664 65:2132 66:5044 67:3114 68:1227 69:3998 70:1045 71:625 72:2985 74:2824 75:1503 76:602 77:2768 78:1894 79:1751 80:2246 81:2125 82:3466 83:1473 84:1986 85:3509 86:1101 87:2132 88:1324 89:4517 90:811 91:8387 92:2811 93:2975 94:4148 95:4501 96:1471 97:311 98:949 99:752 100:71 101:1479 102:4157 103:32859 104:5450 105:778 106:894 107:2732 108:1205 109:4226 110:2258 111:3771 112:2664 113:1853 114:2073 115:2300 116:2100 117:3028 118:3035 119:2010 120:2282 121:1477 122:2803 123:2253 124:1703 125:2909 126:125 128:1567 129:958 130:1380 131:2155 132:784 133:462 134:1618 135:364 136:1487 137:1127 138:2815 139:1594 140:1626 141:1543 142:2151 143:2088 144:1270 145:628 146:2177 147:2129 148:2741 149:2938 150:1288 151:2606 152:2174 153:576 154:7774 155:2106 156:3158 157:2002 158:1431 159:2601 160:3631 161:1993 162:3955 163:2298 164:1950 165:2549 166:1567 167:2110 168:3823 169:776 170:5369 171:1057 172:4455 173:3415 174:906 175:1355 176:3802 177:4776 178:4295 179:2269 180:2878 181:4256 182:3747 183:2548 184:2053 185:21637 186:5344 187:4683 188:4388 189:4400 190:9721 191:1551 192:11371 193:9461 194:7803 195:5576 196:3290 197:3351 198:6076 199:8790 200:8071 201:6364 202:10447 203:10584 204:4595 205:3635 206:4386 207:3576 208:4272 209:5315 210:4687 211:2684 212:4829 213:3886 214:1033 215:52 216:6940 217:3354 218:1575 219:396 220:2194 221:1248 222:751 223:3071 End of report