Dialing Hyderabad Landline vs. Mobile Phone Numbers

In Hyderabad , landline and mobile phones have similar, but different numbering formats that affect dialing for inbound international calls. You must use the proper phone number format for each type of phone or your call will not complete.

For inbound international callers (and domestic long distance callers), all India phone numbers, both landline and mobile, are ultimately 10-digits long - but how you get those 10-digits isn't the same. [Note: In 2009 / 2010, India mobile phone numbers are expected to change to 11-digits on account of rapid mobile phone growth. Details are still to be announced. Read more]

These differences affect how you dial an inbound international call (or a domestic long distance call) - especially with respect to whether you do or do not include the Hyderabad area code.

Read below for further information, including how to tell a mobile from a fixed line number.

Hyderabad online phone directories
Hyderabad telephone companies

Phone Number Formats to Call Hyderabad

To make an international telephone call to Hyderabad, you need to dial a phone number formatted correctly for either a landline or mobile phone. Each is a 10-digit number, but the format is slightly different for landline numbers vs. mobile numbers. The proper phone number formats are as shown below.

Continue reading below for further details on landline and mobile dialing.

Format to Dial a Hyderabad Landline Phone

xxx  91   40  nnnn nnnn
international
access code
country
code
area
code
local subscriber
number

Format to Dial a Hyderabad Mobile Phone

xxx  91  9x nnn nnnnn
international
access code
country
code
10-digit
mobile number

[Note: In 2009 / 2010, India mobile phone numbers are expected to change to 11-digits on account of rapid mobile phone growth. Details are still to be announced. Read more]

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Dialing Hyderabad Landline Phone Numbers

When making an international (or domestic long distance) call to a Hyderabad landline phone, you need to dial a 10-digit phone number that consists of a 2-digit area code PLUS an 8-digit subscriber number.

2-Digit Hyderabad Area Code

Despite it's large population, Hyderabad proper currently has only one area code / city code and that is: ' 40 '.

You need to dial this 2-digit area code, along with an 8-digit local subscriber number, for all inbound international calls to Hyderabad landline phones.

Note that while Hyderabad proper has only one area code, some areas nearby to Hyderabad do use different areas codes.

8-Digit Hyderabad Subscriber Numbers

All subscriber numbers for landline phones in Hyderabad are 8-digits long. They are typically written as a solid string, as in 'nnnnnnnn'.

You need to dial this 8-digit subscriber code, along with the 2-digit area code, for all inbound international calls to Hyderabad landline phones.

Note that landline subscriber numbers are generally assigned in blocks to specific carriers, so if you are curious, you can generally tell what carrier services any given number.

Here are the starting digits for the leading fixed line carriers:

  • BSNL and MTNL landline numbers start with a '2'
  • Reliance Communications landline numbers start with a '3'
  • Bharti Airtel landline numbers start with a '4'
  • MTS (Shyam) landline numbers start with a '5'
  • Tata Indicom landline numbers start with a '6'
  • Datacom Solutions landline numbers start with a '7' (company has not yet launched services and they may be assigned a new number group prior to launch)

If your Hyderabad number is a 8-digit number starting with any of the above, you can be sure it is a landline number and that you need to add ' 40 ' before it for inbound international calling.

Notes

  • You may find that some Hyderabad phone numbers already include the area code (' 40 ') and/or the national direct dial code (' 0 '). For instance, like this: 40 - nnnnnnnn or like this 040 - nnnnnnnn
  • In such cases, you obviously already have all 10-digits and should not add the area code a second time.
  • Note also that in such cases, you must remove the ' 0 ' from your dialing sequence as this is used only within India and will cause your call to fail.

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Dialing Hyderabad Mobile Phone Numbers

Hyderabad mobile phone numbers are much simpler than landline numbers - they are always 10-digits long and no area code is required.

To reach a Hyderabad mobile number, you simply dial the given 10-digit phone number.

Note that all India mobile numbers start with a '9' and have 10-digits - regardless of the carrier. So if you have a 10-digit Hyderabad phone number that starts with a '9', you can be certain that it is a mobile number.

Here are the starting digits for a few of the leading mobile carriers:

  • BSNL mobile numbers start with a '94'
  • Reliance Communications mobile numbers generally start with a '93', although some start with '92'
  • Tata Indicom mobile numbers generally start with a '92', although some start with '93'

Beginning in 2009 or possibly 2010, mobile phone numbers may become 11-digits long to accommodate growing demand for more mobile phones. This change is expect to be accomplished by adding an extra '9' to the start of all existing mobile numbers. Read more

Click here for more information on mobile phone numbering in India.

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How to Tell the Difference Between a Landline and Mobile Number

You probably have a Hyderabad landline phone number if you have any of the following:

  • An 8-digit number - especially if it starts with a '2', '3', '4', or '6'
  • A 10-digit number if it starts with ' 40 '
  • An 11-digit number if it starts with ' 040 '

You probably have a Hyderabad mobile phone number if you have any of the following:

  • A 10-digit number that starts with a '9'
  • An 11-digit number if it starts with ' 09 '

In either case, if you have an 11-digit number starting with a '0', you need to drop the '0' when making inbound international calls. The '0' is used only for domestic long distance dialing.

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Changeover to 11-Digit Mobile Numbers

Beginning in 2009 or possibly 2010, mobile phone numbers are expected to become 11-digits long. This is due to exceptional growth in demand for mobile phones in India.

As of this writing (Jan '09), details of this transition have not yet been finalized or announced - and there appears to be some disagreement among the players as to whether 11-digit numbers are, in fact, necessary. Apparently the need may be negated (or at least delayed) by making some other changes to India's numbering scheme.

However if the plan goes through, preliminary indications are that this change will be accomplished by adding an extra '9' to the start of all existing 10-digit mobile numbers. As a result, after the change all mobile numbers will continue to start with a '9' and many will start with '99'.

While authoritative information on the potential change is scant, you may refer to these sources for additional information.

We will post additional information as it becomes available. Or you can check directly with the sites shown at India telecom sources.

UPDATE: In a report dated March, 2009, TRAI is seeking to make adjustments to the national numbering system that would allow the 11-digit mobile scheme to be deferred for the some years. To accomplish this, numbers recently given to Datacom Solutions would have to be reassigned. Read more (pdf)

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Note that in the above discussion, we have spared you most of the arcane and complicated details, but if you want to learn more about subscriber numbers, national destination codes, PLMN access codes, mobile switching center (MSC) codes, etc., please read India's official National Numbering Plan [large pdf].

Click here for more information about India's telecommunications industry, including regulatory agencies and major trade groups.

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