IPv4 R&E Routing Table Report 23:05 GMT Mon 21 Jul, 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: 987523 Prefixes after maximum aggregation (per Origin AS): 382716 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 487036 Number of IPv4 prefixes with a valid ROA: 555492 Number of IPv4 prefixes with an invalid ROA: 611 Number of IPv4 prefixes with no ROA: 431420 Total ASes present in the Internet Routing Table: 76912 Prefixes per ASN: 12.84 Origin-only ASes present in the Internet Routing Table: 65894 Origin ASes announcing only one prefix: 26930 Transit ASes present in the Internet Routing Table: 11018 Transit-only ASes present in the Internet Routing Table: 547 Paths with bogon ASNs present in the IPv4 Routing Table: 27 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 63 Max AS path prepend of ASN ( 37447) 57 Prefixes from unregistered ASNs in the Routing Table: 1144 Number of instances of unregistered ASNs: 1177 Number of 32-bit ASNs allocated by the RIRs: 46911 Number of 32-bit ASNs visible in the Routing Table: 38561 Prefixes from 32-bit ASNs in the Routing Table: 206132 Number of bogon 32-bit ASNs visible in the Routing Table: 82 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 424 Number of addresses announced to Internet: 3106547456 Equivalent to 185 /8s, 42 /16s and 39 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 321933 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 262155 Total APNIC prefixes after maximum aggregation: 77720 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 253109 Unique aggregates announced from the APNIC address blocks: 105018 APNIC Region origin ASes present in the Internet Routing Table: 14686 APNIC Prefixes per ASN: 17.23 APNIC Region origin ASes announcing only one prefix: 4485 APNIC Region transit ASes present in the Internet Routing Table: 1979 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10239 Number of APNIC addresses announced to Internet: 749120512 Equivalent to 44 /8s, 166 /16s and 172 /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: 289844 Total ARIN prefixes after maximum aggregation: 131783 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291431 Unique aggregates announced from the ARIN address blocks: 141112 ARIN Region origin ASes present in the Internet Routing Table: 19199 ARIN Prefixes per ASN: 15.18 ARIN Region origin ASes announcing only one prefix: 7035 ARIN Region transit ASes present in the Internet Routing Table: 1929 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5249 Number of ARIN addresses announced to Internet: 1349213440 Equivalent to 80 /8s, 107 /16s and 93 /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: 275656 Total RIPE prefixes after maximum aggregation: 135859 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274720 Unique aggregates announced from the RIPE address blocks: 177375 RIPE Region origin ASes present in the Internet Routing Table: 28927 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12052 RIPE Region transit ASes present in the Internet Routing Table: 4009 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: 12562 Number of RIPE addresses announced to Internet: 731897344 Equivalent to 43 /8s, 159 /16s and 222 /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: 124249 Total LACNIC prefixes after maximum aggregation: 29818 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 120602 Unique aggregates announced from the LACNIC address blocks: 49102 LACNIC Region origin ASes present in the Internet Routing Table: 11259 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2664 LACNIC Region transit ASes present in the Internet Routing Table: 2529 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9219 Number of LACNIC addresses announced to Internet: 171069952 Equivalent to 10 /8s, 50 /16s and 82 /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: 34475 Total AfriNIC prefixes after maximum aggregation: 6785 AfriNIC Deaggregation factor: 5.08 Prefixes being announced from the AfriNIC address blocks: 47237 Unique aggregates announced from the AfriNIC address blocks: 14063 AfriNIC Region origin ASes present in the Internet Routing Table: 1927 AfriNIC Prefixes per ASN: 24.51 AfriNIC Region origin ASes announcing only one prefix: 694 AfriNIC Region transit ASes present in the Internet Routing Table: 374 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1292 Number of AfriNIC addresses announced to Internet: 105003264 Equivalent to 6 /8s, 66 /16s and 57 /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 11823 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6161 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4489 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4463 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3701 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3290 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2907 863 516 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2740 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2187 434 196 TATACOMM-AS TATA Communications formerly 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 13678 40972 5282 AMAZON-02, US 11492 4813 319 611 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3505 8771 860 COGENT-174, US 22773 3342 3032 167 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3197 3856 433 GOOGLE-CLOUD-PLATFORM, US 16625 2930 1238 2181 AKAMAI-AS, US 4155 2854 217 1737 USDA-1, 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 7604 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3919 3395 123 AKAMAI-ASN1, NL 9009 3784 360 2106 M247, RO 12389 3119 2317 872 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2402 361 582 TELLCOM-AS, TR 212238 2323 164 1691 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1573 1852 14 TE-AS TE-AS, EG 203020 1476 163 649 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 12309 3259 574 UNINET, MX 10620 3484 474 1027 Telmex Colombia S.A., CO 13999 2529 511 349 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1370 2435 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1346 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1196 371 22 Telefonica del Peru S.A.A., PE 11664 1066 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1065 68 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1022 373 162 Axtel, S.A.B. de C.V., MX 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 1719 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1294 1488 355 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1205 389 22 LINKdotNET-AS, EG 37069 1101 1112 11 MOBINIL, EG 36935 822 520 43 Vodafone-, EG 36914 571 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 532 56 53 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 13678 40972 5282 AMAZON-02, US 8151 12309 3259 574 UNINET, MX 9808 11823 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7604 1712 148 UNI2-AS, ES 7545 6161 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4813 319 611 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4489 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4463 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3919 3395 123 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 12309 11735 UNINET, MX 9808 11823 11707 CHINAMOBILE-CN China Mobile Communications Grou 12479 7604 7456 UNI2-AS, ES 7545 6161 5540 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4489 4463 FPT-AS-AP FPT Telecom Company, VN 11492 4813 4202 CABLEONE, US 9498 4463 4152 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 3891 VIETEL-AS-AP Viettel Group, VN 20940 3919 3796 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 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 46639 UNALLOCATED 8.38.73.0/24 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 23.140.216.0/24 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /11:92 /12:298 /13:578 /14:1200 /15:2126 /16:13746 /17:8159 /18:13412 /19:24385 /20:43828 /21:51491 /22:111483 /23:102385 /24:614269 /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 12479 6548 7604 UNI2-AS, ES 8151 6527 12309 UNINET, MX 11492 3606 4813 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2814 3855 VIASAT-SP-BACKBONE, US 22773 2493 3342 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2355 13678 AMAZON-02, US 30036 2272 2613 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2195 3484 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) ---------------------------------------------- 1:2414 2:1491 3:854 4:10 5:4754 6:163 7:6 8:1552 9:1 11:172 12:1334 13:460 14:2562 15:365 16:286 17:378 18:897 20:558 21:4 22:188 23:7688 24:2672 25:2 27:2792 29:19 31:3338 32:35 33:1 34:83 35:257 36:3637 37:4559 38:9438 39:911 40:252 41:4216 42:1979 43:2724 44:371 45:18653 46:5068 47:336 49:1880 50:1936 51:591 52:1549 54:324 55:1108 56:11 57:271 58:2208 59:1299 60:1174 61:2830 62:2967 63:1792 64:5520 65:2163 66:4679 67:3094 68:1083 69:3871 70:1041 71:622 72:2852 74:2777 75:1502 76:602 77:2757 78:1894 79:1691 80:2197 81:2050 82:3167 83:1435 84:1884 85:3456 86:1086 87:2123 88:1290 89:4423 90:779 91:8401 92:2707 93:2945 94:4055 95:4399 96:1445 97:310 98:955 99:695 100:71 101:1437 102:3886 103:32799 104:5203 105:798 106:971 107:2640 108:1255 109:4184 110:2245 111:3311 112:2236 113:1848 114:1952 115:2213 116:2078 117:2582 118:2976 119:1917 120:2140 121:1323 122:2784 123:2229 124:1692 125:2903 126:90 128:1580 129:961 130:1290 131:2033 132:767 133:450 134:1637 135:323 136:1443 137:1126 138:2819 139:1584 140:1632 141:1505 142:1907 143:1994 144:1200 145:562 146:2161 147:2101 148:2710 149:2925 150:1280 151:2226 152:2069 153:525 154:7597 155:1849 156:3084 157:1947 158:1351 159:2502 160:3637 161:1887 162:3847 163:2249 164:1872 165:2359 166:1522 167:2018 168:3979 169:781 170:5121 171:1005 172:4235 173:3391 174:917 175:1331 176:3744 177:4702 178:3937 179:2314 180:2727 181:4132 182:3509 183:2267 184:2062 185:21562 186:5225 187:4659 188:4269 189:4324 190:9564 191:1492 192:11314 193:9477 194:7763 195:5574 196:3266 197:3183 198:6077 199:8587 200:8073 201:6381 202:10367 203:10646 204:4644 205:3604 206:4469 207:3511 208:4270 209:5126 210:4571 211:2592 212:4534 213:3813 214:1026 215:46 216:6703 217:3214 218:1363 219:394 220:2147 221:1191 222:743 223:2687 End of report