All ASNs

Autonomous System details for AS18403

AS18403

FPT Telecom Company • fpt.com

AS18403 — FPT Telecom Company

AS Name

FPT-VN

Country

Vietnam (VN)

Website

fpt.com

Number of IPv4

6,189,568

Number of IPv6

6.64 × 10²⁹

ASN type

ISP

Status

Allocated

Registry

APNIC

Allocated

January 03, 2003

Last updated

May 25, 2026

IP Ranges

4,630 IPv4 prefixes, 19 IPv6 prefixes

Prefix	Company	Number of IPs
1.52.0.0/14	IP range for FPT Broadband Service	262,144
1.52.0.0/18	IP range for FPT Broadband Service	16,384
1.52.0.0/20	IP range for FPT Broadband Service	4,096
1.52.0.0/23	IP range for FPT Broadband Service	512
1.52.2.0/23	IP range for FPT Broadband Service	512
1.52.4.0/24	IP range for FPT Broadband Service	256
1.52.5.0/24	IP range for FPT Broadband Service	256
1.52.6.0/24	IP range for FPT Broadband Service	256
1.52.7.0/24	IP range for FPT Broadband Service	256
1.52.8.0/23	IP range for FPT Broadband Service	512
1.52.10.0/24	IP range for FPT Broadband Service	256
1.52.11.0/24	IP range for FPT Broadband Service	256
1.52.12.0/24	IP range for FPT Broadband Service	256
1.52.13.0/24	IP range for FPT Broadband Service	256
1.52.14.0/24	IP range for FPT Broadband Service	256
1.52.15.0/24	IP range for FPT Broadband Service	256
1.52.16.0/20	FPT Telecom Company	4,096
1.52.16.0/24	FPT Telecom Company	256
1.52.17.0/24	FPT Telecom Company	256
1.52.18.0/24	FPT Telecom Company	256
1.52.19.0/24	FPT Telecom Company	256
1.52.20.0/24	FPT Telecom Company	256
1.52.21.0/24	FPT Telecom Company	256
1.52.22.0/24	FPT Telecom Company	256
1.52.23.0/24	FPT Telecom Company	256
1.52.24.0/24	FPT Telecom Company	256
1.52.25.0/24	FPT Telecom Company	256
1.52.26.0/24	FPT Telecom Company	256
1.52.27.0/24	FPT Telecom Company	256
1.52.28.0/24	FPT Telecom Company	256
1.52.29.0/24	FPT Telecom Company	256
1.52.31.0/24	FPT Telecom Company	256
1.52.32.0/20	FPT Telecom	4,096
1.52.32.0/24	FPT Telecom	256
1.52.33.0/24	FPT Telecom	256
1.52.34.0/24	FPT Telecom	256
1.52.35.0/24	FPT Telecom	256
1.52.36.0/24	FPT Telecom	256
1.52.37.0/24	FPT Telecom	256
1.52.38.0/24	FPT Telecom	256
1.52.39.0/24	FPT Telecom	256
1.52.40.0/23	FPT Telecom	512
1.52.42.0/24	FPT Telecom	256
1.52.43.0/24	FPT Telecom	256
1.52.44.0/24	FPT Telecom	256
1.52.45.0/24	FPT Telecom	256
1.52.46.0/24	FPT Telecom	256
1.52.47.0/24	FPT Telecom	256
1.52.48.0/20	FPT Telecom	4,096
1.52.49.0/24	FPT Telecom	256
1.52.50.0/24	FPT Telecom	256
1.52.51.0/24	FPT Telecom	256
1.52.52.0/24	FPT Telecom	256
1.52.53.0/24	FPT Telecom	256
1.52.54.0/24	FPT Telecom	256
1.52.55.0/24	FPT Telecom	256
1.52.56.0/23	FPT Telecom	512
1.52.60.0/23	FPT Telecom	512
1.52.62.0/24	FPT Telecom	256
1.52.63.0/24	FPT Telecom	256
1.52.64.0/18	FPT Telecom	16,384
1.52.64.0/20	FPT Telecom	4,096
1.52.64.0/23	FPT Telecom	512
1.52.66.0/24	FPT Telecom	256
1.52.67.0/24	FPT Telecom	256
1.52.68.0/24	FPT Telecom	256
1.52.69.0/24	FPT Telecom	256
1.52.71.0/24	FPT Telecom	256
1.52.72.0/24	FPT Telecom	256
1.52.73.0/24	FPT Telecom	256
1.52.74.0/24	FPT Telecom	256
1.52.75.0/24	FPT Telecom	256
1.52.76.0/24	FPT Telecom	256
1.52.77.0/24	FPT Telecom	256
1.52.78.0/24	FPT Telecom	256
1.52.79.0/24	FPT Telecom	256
1.52.80.0/20	FPT Telecom	4,096
1.52.80.0/24	FPT Telecom	256
1.52.81.0/24	FPT Telecom	256
1.52.82.0/24	FPT Telecom	256
1.52.83.0/24	FPT Telecom	256
1.52.84.0/24	FPT Telecom	256
1.52.85.0/24	FPT Telecom	256
1.52.86.0/24	FPT Telecom	256
1.52.87.0/24	FPT Telecom	256
1.52.89.0/24	FPT Telecom	256
1.52.90.0/24	FPT Telecom	256
1.52.91.0/24	FPT Telecom	256
1.52.92.0/24	FPT Telecom	256
1.52.93.0/24	FPT Telecom	256
1.52.94.0/24	FPT Telecom	256
1.52.95.0/24	FPT Telecom	256
1.52.96.0/20	FPT Telecom	4,096
1.52.96.0/23	FPT Telecom	512
1.52.98.0/24	FPT Telecom	256
1.52.99.0/24	FPT Telecom	256
1.52.100.0/24	FPT Telecom	256
1.52.109.0/24	FPT Telecom	256
1.52.110.0/24	FPT Telecom	256
1.52.111.0/24	FPT Telecom	256
2405:4800::/30		3.17 × 10²⁹
2405:4800::/32		7.92 × 10²⁸
2405:4800:10c::/48		1.21 × 10²⁴
2405:4800:10d::/48		1.21 × 10²⁴
2405:4800:206::/48		1.21 × 10²⁴
2405:4800:2fe::/48		1.21 × 10²⁴
2405:4800:18c2::/48		1.21 × 10²⁴
2405:4800:5cc2::/48		1.21 × 10²⁴
2405:4800:a403::/48		1.21 × 10²⁴
2405:4800:a601::/48		1.21 × 10²⁴
2405:4801::/32		7.92 × 10²⁸
2405:4802::/32		7.92 × 10²⁸
2405:4803::/32		7.92 × 10²⁸
2405:4803:a000::/36		4.95 × 10²⁷
2405:4803:b000::/36		4.95 × 10²⁷
2405:4803:c000::/36		4.95 × 10²⁷
2405:4803:d000::/36		4.95 × 10²⁷
2405:4803:e000::/36		4.95 × 10²⁷
2405:4803:f000::/36		4.95 × 10²⁷

This table only shows the first 100 of the set of IPv4 and IPv6 prefixes. All data is available via our IP data API.

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS18403

325 peers

AS42 AS553 AS559 AS983 AS997 AS1764 AS1836 AS2500 AS2516 AS2518 AS2906 AS3856 AS4058 AS4181 AS4608 AS4628 AS4657 AS4764 AS4773 AS4788 AS4817 AS4844 AS5405 AS6057 AS6204 AS6424 AS6461 AS6507 AS6619 AS6939 AS7195 AS7610 AS7713 AS8220 AS8283 AS8298 AS8359 AS8426 AS8529 AS8849 AS8888 AS8966 AS9009 AS9226 AS9264 AS9269 AS9299 AS9304 AS9318 AS9370 AS9658 AS9664 AS9821 AS9886 AS9930 AS10024 AS10122 AS10310 AS11158 AS12577 AS13237 AS13786 AS14061 AS15547 AS16552 AS17451 AS17984 AS17996 AS18019 AS18106 AS18186 AS18187 AS293 AS1267 AS1828 AS3214 AS3216 AS3303 AS4134 AS4455 AS4775 AS4826 AS5713 AS7552 AS7575 AS7594 AS8758 AS9002 AS9266 AS11039 AS12389 AS12552 AS12779 AS12859 AS13194 AS14537 AS14630 AS15943 AS17639 AS17660 AS19551 AS20326 AS20473 AS20485 AS20764 AS20932 AS20940 AS22356 AS23671 AS23673 AS23855 AS23856 AS23947 AS24198 AS24482 AS24492 AS24516 AS24538 AS24961 AS25152 AS25160 AS25192 AS26277 AS29691 AS30103 AS30999 AS32590 AS32787 AS33353 AS33891 AS34019 AS34549 AS35280 AS35598 AS35710 AS37002 AS37989 AS38001 AS38040 AS38082 AS38158 AS38182 AS38195 AS38278 AS38757 AS39120 AS39572 AS40009 AS40627 AS41327 AS41564 AS42909 AS44066 AS44356 AS45102 AS45259 AS45296 AS45352 AS45430 AS45701 AS45796 AS45899 AS46475 AS47957 AS49902 AS51185 AS52075 AS52320 AS53334 AS53813 AS54113 AS55195 AS55720 AS55821 AS55850 AS55855 AS56308 AS56987 AS57695 AS57777 AS58057 AS58299 AS58389 AS58436 AS58485 AS58495 AS58511 AS58655 AS58682 AS58715 AS58717 AS58907 AS58952 AS59217 AS59238 AS59318 AS60022 AS60486 AS61292 AS62014 AS62713 AS62955 AS63399 AS63516 AS63741 AS63927 AS63949 AS64010 AS64049 AS64073 AS131219 AS131314 AS132203 AS132602 AS132696 AS132816 AS132829 AS133159 AS133210 AS133840 AS134078 AS134148 AS134469 AS134654 AS134672 AS134835 AS135158 AS136106 AS136168 AS136557 AS137367 AS137969 AS137991 AS138128 AS138699 AS138881 AS139225 AS139341 AS139428 AS139628 AS139831 AS139901 AS139967 AS141389 AS141642 AS141995 AS147094 AS147168 AS149290 AS150279 AS151066 AS151326 AS151404 AS152144 AS153087 AS197537 AS202053 AS202617 AS206356 AS210937 AS212024 AS212483 AS213151 AS213241 AS216211 AS263444 AS264479 AS328366 AS396986 AS398465 AS399077 AS20562 AS21412 AS21859 AS23962 AS24889 AS24940 AS25091 AS25220 AS28663 AS28716 AS29075 AS29140 AS29838 AS30844 AS31510 AS33597 AS34177 AS34288 AS34927 AS35360 AS35625 AS36994 AS37100 AS37468 AS37721 AS38880 AS39351 AS42541 AS45903 AS47147 AS47692 AS48362 AS48919 AS49544 AS51184 AS51907 AS55518 AS59105 AS59360 AS60068 AS63956 AS64475 AS132337 AS132847 AS135895 AS137409 AS140627 AS148968 AS198385 AS199938 AS205112 AS215638 AS215859 AS262355

AS18403 peers with these other Autonomous Systems.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS18403

13 upstreams

AS1299 AS2914 AS3356 AS3491 AS4229 AS4637 AS5511 AS6453 AS7473 AS13335 AS23764 AS58453 AS64050

AS18403 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS18403 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS18403

249 downstreams

AS9902 AS23999 AS24085 AS24088 AS24429 AS36224 AS38244 AS38251 AS38731 AS38734 AS38735 AS42473 AS45541 AS45543 AS45544 AS45552 AS45556 AS45557 AS45894 AS45896 AS45900 AS45901 AS45902 AS54994 AS55306 AS55308 AS55311 AS55315 AS55316 AS55318 AS55319 AS55322 AS55323 AS55324 AS56141 AS56144 AS56148 AS56150 AS56159 AS63199 AS63731 AS63732 AS63734 AS63735 AS63736 AS63737 AS63739 AS63743 AS63744 AS63751 AS63754 AS63756 AS63760 AS63765 AS63766 AS131124 AS131126 AS131127 AS131128 AS131130 AS131342 AS131343 AS131344 AS131345 AS131347 AS131348 AS131349 AS131351 AS131353 AS131354 AS131358 AS131362 AS131363 AS131364 AS131365 AS131366 AS131371 AS131372 AS131373 AS131375 AS131376 AS131379 AS131383 AS131385 AS131386 AS131387 AS131391 AS131396 AS131398 AS131402 AS131408 AS131412 AS131413 AS131414 AS131419 AS131423 AS131429 AS131438 AS135067 AS135338 AS135904 AS135906 AS135908 AS135910 AS135911 AS135912 AS135913 AS135916 AS135918 AS135919 AS135921 AS135922 AS135925 AS135927 AS135932 AS135933 AS135942 AS135945 AS135963 AS135964 AS135967 AS135969 AS135971 AS135974 AS135977 AS135990 AS135997 AS138915 AS139057 AS140739 AS140761 AS140764 AS140765 AS140766 AS140770 AS140774 AS140775 AS140796 AS140799 AS140801 AS140807 AS140810 AS140813 AS140815 AS140818 AS140822 AS140823 AS140824 AS140825 AS140832 AS142294 AS149062 AS149065 AS149078 AS149080 AS149082 AS149089 AS149096 AS149101 AS149102 AS149107 AS149109 AS149118 AS149120 AS149123 AS149124 AS149125 AS149131 AS149135 AS149136 AS149139 AS149142 AS149143 AS149149 AS149150 AS149151 AS149161 AS150344 AS150698 AS150820 AS150824 AS150828 AS150842 AS150857 AS150859 AS150862 AS150866 AS150869 AS150872 AS150889 AS150890 AS150895 AS151858 AS151866 AS151870 AS151872 AS151896 AS151901 AS151914 AS151917 AS151922 AS151923 AS151938 AS152194 AS152934 AS152935 AS152945 AS152947 AS152949 AS152953 AS152955 AS152959 AS152969 AS152974 AS152976 AS152978 AS152980 AS152981 AS152989 AS152993 AS152994 AS153032 AS153320 AS153391 AS153401 AS153403 AS153407 AS153413 AS153429 AS153430 AS153433 AS153435 AS153499 AS153501 AS153507 AS153535 AS153536 AS153539 AS153543 AS153585 AS153647 AS153713 AS153780 AS153831 AS154106 AS154144 AS154247 AS154388 AS199524

AS18403 provides internet connectivity to these downstream Autonomous Systems.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.