IPv4 R&E Routing Table Report 23:05 GMT Mon 07 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: 981319 Prefixes after maximum aggregation (per Origin AS): 381661 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 485317 Number of IPv4 prefixes with a valid ROA: 552606 Number of IPv4 prefixes with an invalid ROA: 678 Number of IPv4 prefixes with no ROA: 428035 Total ASes present in the Internet Routing Table: 76824 Prefixes per ASN: 12.77 Origin-only ASes present in the Internet Routing Table: 65839 Origin ASes announcing only one prefix: 26880 Transit ASes present in the Internet Routing Table: 10985 Transit-only ASes present in the Internet Routing Table: 537 Paths with bogon ASNs present in the IPv4 Routing Table: 32 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 79 Max AS path prepend of ASN ( 37447) 75 Prefixes from unregistered ASNs in the Routing Table: 1110 Number of instances of unregistered ASNs: 1148 Number of 32-bit ASNs allocated by the RIRs: 46782 Number of 32-bit ASNs visible in the Routing Table: 38430 Prefixes from 32-bit ASNs in the Routing Table: 205136 Number of bogon 32-bit ASNs visible in the Routing Table: 92 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 409 Number of addresses announced to Internet: 3103518720 Equivalent to 184 /8s, 251 /16s and 240 /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: 320637 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 260935 Total APNIC prefixes after maximum aggregation: 77512 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 251754 Unique aggregates announced from the APNIC address blocks: 104670 APNIC Region origin ASes present in the Internet Routing Table: 14637 APNIC Prefixes per ASN: 17.20 APNIC Region origin ASes announcing only one prefix: 4436 APNIC Region transit ASes present in the Internet Routing Table: 1964 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 40 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10188 Number of APNIC addresses announced to Internet: 748864256 Equivalent to 44 /8s, 162 /16s and 195 /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: 289150 Total ARIN prefixes after maximum aggregation: 131512 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 290585 Unique aggregates announced from the ARIN address blocks: 140582 ARIN Region origin ASes present in the Internet Routing Table: 19200 ARIN Prefixes per ASN: 15.13 ARIN Region origin ASes announcing only one prefix: 7042 ARIN Region transit ASes present in the Internet Routing Table: 1922 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: 5231 Number of ARIN addresses announced to Internet: 1349038592 Equivalent to 80 /8s, 104 /16s and 178 /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: 275079 Total RIPE prefixes after maximum aggregation: 135451 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274122 Unique aggregates announced from the RIPE address blocks: 176669 RIPE Region origin ASes present in the Internet Routing Table: 28912 RIPE Prefixes per ASN: 9.48 RIPE Region origin ASes announcing only one prefix: 12044 RIPE Region transit ASes present in the Internet Routing Table: 4001 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 73 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12511 Number of RIPE addresses announced to Internet: 731099904 Equivalent to 43 /8s, 147 /16s and 179 /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: 123854 Total LACNIC prefixes after maximum aggregation: 29775 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 120249 Unique aggregates announced from the LACNIC address blocks: 49037 LACNIC Region origin ASes present in the Internet Routing Table: 11268 LACNIC Prefixes per ASN: 10.67 LACNIC Region origin ASes announcing only one prefix: 2668 LACNIC Region transit ASes present in the Internet Routing Table: 2523 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 71 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9221 Number of LACNIC addresses announced to Internet: 171177728 Equivalent to 10 /8s, 51 /16s and 247 /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: 31191 Total AfriNIC prefixes after maximum aggregation: 6677 AfriNIC Deaggregation factor: 4.67 Prefixes being announced from the AfriNIC address blocks: 44200 Unique aggregates announced from the AfriNIC address blocks: 13994 AfriNIC Region origin ASes present in the Internet Routing Table: 1913 AfriNIC Prefixes per ASN: 23.11 AfriNIC Region origin ASes announcing only one prefix: 690 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: 79 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1279 Number of AfriNIC addresses announced to Internet: 103097344 Equivalent to 6 /8s, 37 /16s and 36 /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 11563 8759 114 CHINAMOBILE-CN China Mobile Communication 7545 6146 840 622 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4440 535 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4388 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3921 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3701 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3289 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2899 862 526 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2429 812 179 CMNET-JIANGSU-AP China Mobile communicati 4755 2184 434 193 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 13561 40945 5223 AMAZON-02, US 11492 4781 317 604 CABLEONE, US 7155 3857 286 85 VIASAT-SP-BACKBONE, US 6327 3637 1320 82 SHAW, CA 174 3511 8771 858 COGENT-174, US 22773 3341 3034 168 ASN-CXA-ALL-CCI-22773-RDC, US 749 3226 54767 2477 DNIC-AS-00749, US 396982 3193 3854 430 GOOGLE-CLOUD-PLATFORM, US 16625 2954 1239 2204 AKAMAI-AS, US 4155 2838 215 1729 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 7669 1713 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3937 3395 123 AKAMAI-ASN1, NL 9009 3791 361 2115 M247, RO 12389 3118 2305 882 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2401 361 581 TELLCOM-AS, TR 212238 2356 169 1724 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1506 1852 14 TE-AS TE-AS, EG 8551 1432 366 39 BEZEQ-INTERNATIONAL-AS Bezeqint Internet 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 12167 3255 572 UNINET, MX 10620 3509 481 1020 Telmex Colombia S.A., CO 13999 2540 538 356 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1368 2435 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1344 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1195 371 22 Telefonica del Peru S.A.A., PE 22884 1061 67 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 11664 1045 278 33 Techtel LMDS Comunicaciones Interactivas 6503 1023 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 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36903 1248 553 97 MT-MPLS, MA 36935 705 522 45 Vodafone-, EG 36992 696 1405 192 ETISALAT-MISR, EG 24835 623 633 33 RAYA-AS, EG 37069 594 862 20 MOBINIL, EG 36914 573 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 534 56 53 WANANCHI-, KE 3741 519 661 316 IS, ZA 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 13561 40945 5223 AMAZON-02, US 8151 12167 3255 572 UNINET, MX 9808 11563 8759 114 CHINAMOBILE-CN China Mobile Communication 12479 7669 1713 148 UNI2-AS, ES 7545 6146 840 622 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4781 317 604 CABLEONE, US 9498 4440 535 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4388 347 26 FPT-AS-AP FPT Telecom Company, VN 20940 3937 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 12167 11595 UNINET, MX 9808 11563 11449 CHINAMOBILE-CN China Mobile Communications Grou 12479 7669 7521 UNI2-AS, ES 7545 6146 5524 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4388 4362 FPT-AS-AP FPT Telecom Company, VN 11492 4781 4177 CABLEONE, US 9498 4440 4127 BBIL-AP BHARTI Airtel Ltd., IN 7552 3921 3894 VIETEL-AS-AP Viettel Group, VN 20940 3937 3814 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 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 395195 UNALLOCATED 8.38.115.0/24 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: 6939 HURRICANE, 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 /11:92 /12:297 /13:577 /14:1192 /15:2124 /16:13713 /17:8157 /18:13344 /19:24292 /20:43075 /21:51262 /22:109867 /23:102096 /24:611160 /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 6592 7669 UNI2-AS, ES 8151 6416 12167 UNINET, MX 11492 3577 4781 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3637 SHAW, CA 7155 2816 3857 VIASAT-SP-BACKBONE, US 22773 2491 3341 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2324 13561 AMAZON-02, US 30036 2264 2605 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2196 3509 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) ---------------------------------------------- 1:2404 2:1494 3:827 4:10 5:4752 6:162 7:6 8:1558 9:1 11:172 12:1344 13:450 14:2553 15:364 16:285 17:380 18:894 20:555 21:4 22:188 23:7658 24:2671 25:2 27:2774 29:19 31:3318 32:35 33:1 34:83 35:256 36:3285 37:4558 38:9399 39:907 40:236 41:3973 42:1883 43:2693 44:370 45:18572 46:5076 47:325 49:1887 50:1888 51:588 52:1554 54:321 55:1097 56:10 57:269 58:2210 59:1271 60:1174 61:2830 62:2844 63:1789 64:5509 65:2170 66:4665 67:3076 68:1085 69:3855 70:1050 71:619 72:2850 74:2771 75:1504 76:607 77:2772 78:1888 79:1715 80:2189 81:2067 82:3161 83:1453 84:1807 85:3455 86:1084 87:2134 88:1311 89:4408 90:776 91:8406 92:2744 93:2937 94:4033 95:4387 96:1448 97:310 98:959 99:691 100:72 101:1439 102:3870 103:32829 104:5223 105:743 106:977 107:2641 108:1262 109:4136 110:2248 111:3254 112:2181 113:1845 114:1963 115:2162 116:2078 117:2554 118:2976 119:1921 120:2109 121:1320 122:2783 123:2211 124:1660 125:2904 126:91 128:1563 129:954 130:1277 131:2036 132:764 133:449 134:1570 135:349 136:1383 137:1125 138:2797 139:1590 140:1628 141:1506 142:1896 143:1957 144:1178 145:557 146:2170 147:2098 148:2710 149:2937 150:1280 151:2201 152:2082 153:525 154:7706 155:1776 156:3199 157:1937 158:1341 159:2504 160:3614 161:1846 162:3863 163:2210 164:1868 165:2051 166:1505 167:2005 168:3962 169:776 170:5111 171:1003 172:4428 173:3359 174:919 175:1319 176:3709 177:4700 178:3910 179:2308 180:2730 181:4096 182:3491 183:2230 184:2068 185:21501 186:5174 187:4602 188:4263 189:4256 190:9576 191:1461 192:11282 193:9456 194:7757 195:5544 196:3238 197:3125 198:6056 199:8546 200:8071 201:6391 202:10350 203:10636 204:4565 205:3597 206:4450 207:3496 208:4257 209:5097 210:4557 211:2553 212:4550 213:3773 214:1012 215:46 216:6755 217:3142 218:1359 219:396 220:2142 221:1151 222:712 223:2562 End of report