IPv4 R&E Routing Table Report 23:05 GMT Sun 22 Jun, 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: 982836 Prefixes after maximum aggregation (per Origin AS): 380078 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 482684 Number of IPv4 prefixes with a valid ROA: 547701 Number of IPv4 prefixes with an invalid ROA: 959 Number of IPv4 prefixes with no ROA: 434176 Total ASes present in the Internet Routing Table: 76774 Prefixes per ASN: 12.80 Origin-only ASes present in the Internet Routing Table: 65807 Origin ASes announcing only one prefix: 26852 Transit ASes present in the Internet Routing Table: 10967 Transit-only ASes present in the Internet Routing Table: 545 Paths with bogon ASNs present in the IPv4 Routing Table: 35 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 73 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1195 Number of instances of unregistered ASNs: 1232 Number of 32-bit ASNs allocated by the RIRs: 46701 Number of 32-bit ASNs visible in the Routing Table: 38340 Prefixes from 32-bit ASNs in the Routing Table: 204553 Number of bogon 32-bit ASNs visible in the Routing Table: 98 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 438 Number of addresses announced to Internet: 3105664512 Equivalent to 185 /8s, 28 /16s and 174 /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: 321108 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 259553 Total APNIC prefixes after maximum aggregation: 77315 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 250889 Unique aggregates announced from the APNIC address blocks: 104437 APNIC Region origin ASes present in the Internet Routing Table: 14603 APNIC Prefixes per ASN: 17.18 APNIC Region origin ASes announcing only one prefix: 4423 APNIC Region transit ASes present in the Internet Routing Table: 1963 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 39 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10148 Number of APNIC addresses announced to Internet: 748659712 Equivalent to 44 /8s, 159 /16s and 164 /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: 288817 Total ARIN prefixes after maximum aggregation: 131063 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 290658 Unique aggregates announced from the ARIN address blocks: 139637 ARIN Region origin ASes present in the Internet Routing Table: 19196 ARIN Prefixes per ASN: 15.14 ARIN Region origin ASes announcing only one prefix: 7031 ARIN Region transit ASes present in the Internet Routing Table: 1932 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: 5222 Number of ARIN addresses announced to Internet: 1349607936 Equivalent to 80 /8s, 113 /16s and 98 /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: 274147 Total RIPE prefixes after maximum aggregation: 134752 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 272865 Unique aggregates announced from the RIPE address blocks: 175608 RIPE Region origin ASes present in the Internet Routing Table: 28888 RIPE Prefixes per ASN: 9.45 RIPE Region origin ASes announcing only one prefix: 12060 RIPE Region transit ASes present in the Internet Routing Table: 3986 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: 12476 Number of RIPE addresses announced to Internet: 730991360 Equivalent to 43 /8s, 146 /16s and 11 /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: 123864 Total LACNIC prefixes after maximum aggregation: 29561 LACNIC Deaggregation factor: 4.19 Prefixes being announced from the LACNIC address blocks: 120402 Unique aggregates announced from the LACNIC address blocks: 48912 LACNIC Region origin ASes present in the Internet Routing Table: 11260 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2651 LACNIC Region transit ASes present in the Internet Routing Table: 2508 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 71 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9212 Number of LACNIC addresses announced to Internet: 171280128 Equivalent to 10 /8s, 53 /16s and 135 /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: 35260 Total AfriNIC prefixes after maximum aggregation: 6626 AfriNIC Deaggregation factor: 5.32 Prefixes being announced from the AfriNIC address blocks: 47584 Unique aggregates announced from the AfriNIC address blocks: 13694 AfriNIC Region origin ASes present in the Internet Routing Table: 1918 AfriNIC Prefixes per ASN: 24.81 AfriNIC Region origin ASes announcing only one prefix: 687 AfriNIC Region transit ASes present in the Internet Routing Table: 375 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1282 Number of AfriNIC addresses announced to Internet: 104924416 Equivalent to 6 /8s, 65 /16s and 5 /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 11227 8759 105 CHINAMOBILE-CN China Mobile Communication 7545 6178 846 646 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4435 535 310 BBIL-AP BHARTI Airtel Ltd., IN 18403 4382 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3918 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3712 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3279 1869 103 VNPT-AS-VN VNPT Corp, VN 24560 2894 857 535 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2195 812 179 CMNET-JIANGSU-AP China Mobile communicati 4755 2181 434 194 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 13606 40953 5213 AMAZON-02, US 11492 4780 317 603 CABLEONE, US 7155 3857 286 85 VIASAT-SP-BACKBONE, US 6327 3635 1320 81 SHAW, CA 174 3581 8743 860 COGENT-174, US 22773 3350 3032 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3227 54767 2478 DNIC-AS-00749, US 396982 3192 3854 428 GOOGLE-CLOUD-PLATFORM, US 16625 2993 1255 2219 AKAMAI-AS, US 36352 2819 230 860 AS-COLOCROSSING, 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 7676 1713 148 UNI2-AS, ES 39891 4780 291 66 ALJAWWALSTC-AS, SA 20940 3935 3395 123 AKAMAI-ASN1, NL 9009 3894 358 2099 M247, RO 12389 3114 2304 885 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2401 361 575 TELLCOM-AS, TR 212238 2313 169 1695 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1571 1852 14 TE-AS TE-AS, EG 8551 1420 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 12216 3256 574 UNINET, MX 10620 3505 481 1017 Telmex Colombia S.A., CO 13999 2536 537 354 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1371 2436 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1340 787 207 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1209 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1198 371 22 Telefonica del Peru S.A.A., PE 22884 1078 68 361 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1048 2503 52 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 1821 644 27 RAYA-AS, EG 24863 1622 389 16 LINKdotNET-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1431 1519 280 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 1075 523 47 Vodafone-, EG 20011 568 154 212 INTERNET-SOLUTIONS, ZA 36914 559 82 3 KENET-AS, KE 15399 543 57 57 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 13606 40953 5213 AMAZON-02, US 8151 12216 3256 574 UNINET, MX 9808 11227 8759 105 CHINAMOBILE-CN China Mobile Communication 12479 7676 1713 148 UNI2-AS, ES 7545 6178 846 646 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4780 317 603 CABLEONE, US 39891 4780 291 66 ALJAWWALSTC-AS, SA 9498 4435 535 310 BBIL-AP BHARTI Airtel Ltd., IN 18403 4382 347 26 FPT-AS-AP FPT Telecom Company, VN 20940 3935 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 12216 11642 UNINET, MX 9808 11227 11122 CHINAMOBILE-CN China Mobile Communications Grou 12479 7676 7528 UNI2-AS, ES 7545 6178 5532 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4780 4714 ALJAWWALSTC-AS, SA 18403 4382 4356 FPT-AS-AP FPT Telecom Company, VN 11492 4780 4177 CABLEONE, US 9498 4435 4125 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 3892 VIETEL-AS-AP Viettel Group, VN 20940 3935 3812 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: 3491 CONSOLE-CONNECT-ASN, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.155.208.0/24 Origin: 396169 AS-GHCIL-01, US 23.155.208.0/24 Transit: 35985 ONERINGNET-ATL-1, 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 /12:300 /13:581 /14:1199 /15:2128 /16:13803 /17:8191 /18:13438 /19:24404 /20:43845 /21:51449 /22:111700 /23:102262 /24:609373 /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 6598 7676 UNI2-AS, ES 8151 6430 12216 UNINET, MX 11492 3576 4780 CABLEONE, US 39891 3489 4780 ALJAWWALSTC-AS, SA 6327 3431 3635 SHAW, CA 7155 2816 3857 VIASAT-SP-BACKBONE, US 22773 2501 3350 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2345 13606 AMAZON-02, US 30036 2256 2597 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2192 3505 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) ---------------------------------------------- 1:2386 2:1490 3:827 4:10 5:4762 6:161 7:6 8:1569 9:1 11:172 12:1347 13:447 14:2525 15:363 16:285 17:378 18:919 20:550 21:4 22:188 23:7575 24:2816 25:2 27:2767 29:19 31:3263 32:35 33:1 34:83 35:254 36:3161 37:4567 38:9372 39:906 40:180 41:4277 42:1923 43:2642 44:377 45:18634 46:5079 47:319 49:1939 50:1877 51:592 52:1561 54:324 55:1008 56:11 57:267 58:2209 59:1288 60:1171 61:2830 62:2897 63:1791 64:5473 65:2173 66:4623 67:3068 68:1119 69:3840 70:1068 71:622 72:2857 74:2783 75:1505 76:622 77:2724 78:1852 79:1675 80:2197 81:2052 82:3164 83:1441 84:1864 85:3445 86:1082 87:2124 88:1307 89:4404 90:770 91:8379 92:2720 93:2912 94:4036 95:4357 96:1428 97:311 98:981 99:687 100:72 101:1424 102:3865 103:32779 104:5153 105:765 106:979 107:2659 108:1241 109:4079 110:2247 111:3285 112:2125 113:1849 114:1993 115:2159 116:2080 117:2531 118:2915 119:1919 120:2056 121:1372 122:2785 123:2183 124:1633 125:2911 126:91 128:1574 129:947 130:1287 131:2037 132:773 133:451 134:1543 135:349 136:1345 137:1117 138:2844 139:1583 140:1618 141:1498 142:1914 143:1876 144:1179 145:545 146:2174 147:2113 148:2697 149:2930 150:1279 151:1989 152:2075 153:524 154:7356 155:1750 156:2834 157:1921 158:1324 159:2493 160:3601 161:1853 162:3856 163:2204 164:1857 165:2005 166:1499 167:1975 168:3970 169:785 170:5132 171:1008 172:4451 173:3341 174:919 175:1324 176:3713 177:4730 178:3747 179:2316 180:2750 181:4072 182:3459 183:2194 184:2067 185:21374 186:5168 187:4592 188:4258 189:4315 190:9569 191:1490 192:11281 193:9454 194:7795 195:5533 196:3287 197:3248 198:6062 199:8524 200:8067 201:6390 202:10272 203:10674 204:4549 205:3614 206:4432 207:3464 208:4268 209:5119 210:4565 211:2537 212:4552 213:3733 214:1030 215:48 216:6746 217:3181 218:1354 219:394 220:2081 221:1145 222:723 223:2496 End of report