These directory areas correspond approximately to the following geographical regions: Irish geographical numbering is structured on a regional basis and follows a logical hierarchy. Main article: List of Irish dialling codes in telephone directories) as follows:Īlphanumeric dialling, using letters as mnemonics for advertising etc is supported, but is rarely used. While formats vary, numbers are usually printed (e.g. Merging or reformatting these tends to cause confusion or make numbers look unfamiliar. are not used as separators.Īrea codes / prefixes are always separated from the subscriber number. The use of spaces is recommended by ComReg for ease of compatibility with online services, such as linking to a phone number in a mobile browser, copying and pasting into mobile diallers etc Numbers are usually grouped into easy to read clusters, separated by spaces or hyphens for ease of use. The area code, or prefix, is normally separated by a space, or less commonly, may be displayed in parentheses (brackets). Irish geographic numbers vary in length from area to area, but follow standard formats within each area code. There is currently no plan to move to a closed numbering system.
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However, mobile numbers use the full range of digits, as local dialling is not supported on mobile networks, and the area code must always be dialled.Ī migration to a standard format, 0xx xxx xxxx, is in progress however, to avoid disruption, this process is only being carried out as needed, where existing area codes and local numbering systems have reached full capacity. Irish area codes vary in length, between one and three digits (excluding the leading 0), and subscribers' numbers are between five and seven digits.Īs optional local dialling is facilitated, Irish geographic numbers cannot begin with 0 (trunk prefix), 1 (special number prefix) or 999 (emergency services). In common with most European countries, the trunk prefix 0 must be omitted when calling Irish numbers from abroad. mobile).Ĭalls made from mobile phones and some VoIP systems always require the full area code and phone number. This is followed by an area code, referred to as a National Dialling Code (NDC), the first digit of which indicates the geographical area or type of service (e.g. The trunk prefix 0 is used to access numbers outside the local area and for all mobile calls. Irish Mobile and non–geographic numbers are fixed length and do not support local dialling. It differs from UK numbering, which originated as alphanumeric codes based on town names. The Irish format is similar to systems used in many parts of Europe, notably the Netherlands, Sweden, Germany, Belgium and France, where geographical numbers are organised using a logic of large regional prefixes, which are then further subdivided into smaller regions. Telephone numbers in Ireland are part of an open numbering plan that allows variations in number length. 17.6 Historical Great Britain access codes.17.5 Historical Northern Ireland access codes.15.2.2.1 Call forwarding (unconditional).15.2 Services on Virgin Media Ireland cable network.15.1.4 Call hold / transfer to another extension.15 Call management services / supplementary service codes.
13.1 Check phone number associated with line / automatic number announcement circuit (ANAC).9 Non–geographic numbers (Freephone & Standard rate).5.1 Speed dial short numbers to contact carriers.1.5.1 M2M (Machine to Machine) Communication.1.5 Mobile virtual network operators (MVNOs).
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