FactBook

The information shown below was provided by representatives of the carrier shown. The International Inbound Services Forum does not warrant the accuracy of the information and assumes no liability for errors.
General
CountryThailand 
CarrierNational Telecom PLC. (CAT) 
Last edited (yyy-mm-dd)2022-11-02 
Number formats
Outbound Freephone001800xxxxxxxx, 1800xxxxxx 
Domestic Freephone1800xxxxxx 
International Access Code001, 009 
Service offerIFSUIFN
InboundYes Yes 
DomesticYes Yes 
Home Country Direct InboundNo No 
OutboundYes Yes 
Home Country Direct OutboundYes Yes 
CLI provided on outbound callsYes Yes 
Outbound simultaneous call limit and defaultUp on number of circuit Up on number of circuit 
Call chargeIFSUIFN
Free or chargeableFree Free 
RemarkInbound roamer will be charged as local call Inbound roamer will be charged as local call 
Number accessibility within countryIFSUIFN
Accessible from PABXsYes, in most cases 
Accessible from HotelsYes, in most cases but some service charge required 
Accessible from phones with international call barringNo No 
Geographic restrictionsNo No 
Islands/teritories included in dialplan
Accessible through other carriers/networks in countryNo No 
Full country coverage provided by a single carrierYes Yes 
Telephone include alpha charactersYes 
Access from payphonesIFSUIFN
Coins or cards neededN/A N/A 
Payphone
operator
To be
recognized
IFS
access
free /
charged
UIFN
access
free /
charged
HCD
access
free /
charged
TOT TOT Yes Free No Yes Free 
Remarks on payphone access
Access from
mobile operators
Number
ranges
IFS
access
free /
charged
UIFN
access
free /
charged
HCD
access
free /
charged
AIS Yes Free Yes Free Yes Free 
DTAC Yes Free Yes Free Yes Free 
NT Mobile Yes Free Yes Free Yes Free 
True Move Yes Free Yes Free Yes Free 
Remarks on mobile accessibilityIn case of inbound roamers, they will be charged as local airtime.  
Number accessibility from abroadIFSUIFN
IFS numbersNo N.a.
Domestic freephonenumbersNo N.a.
DTMF Capability
Required for accessYes 
% of payphones with DTMF100 
100% by when
Number PortabilityIFSUIFN
Domestic to internationalNo All UIFN's portable as required by ITU-T rec. E.169
International to domesticNo 
International between countriesYes 
International between carriersNo 
Domestic or international between carriers within countryNo 
Single SOF portability supportedYes Yes 
Number for callers to report trouble1888 1888 
Directory serviceIFSUIFN
PrintedNo No 
Operator assistedNo No 
InternetNo No 
Aging period for disconnected numbersafter 6 months old access numbers can be re-assigned N.a.
Service provisioning leadtime5 working days 5 working days 
Related servicesInboundOutbound
Offers international shared costNo No 
Offers international premium rateNo No 
Does agree to use transit for IFS/HCDYes Yes 
Is willing to act as transit carrier for IFS/HCDYes 
Offers wholesale IFSNo 
Internet links
Carrier homepagewww.ntplc.co.th 
For additional information 
Regulatorwww.nbtc.go.th/wps/portal/NTC/eng 
Public holiday information