More information Code, Allocation ...
| Code | Allocation | 
00 | International access | 
048 | Northern Ireland access | 
020 91 | Dummy numbers reserved for drama, film and television use to avoid accidental clashes with real telephone numbers | 
076 | VoIP services - phased out 1 January 2022 | 
080 | Mailbox for landline users (formerly access code for Northern Ireland)[when?] | 
0818 | Non-geographic numbers (inclusive/charged as per geographic numbers) | 
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These codes, unlike most of the above, cannot be dialled from abroad.
The following are special numbers dialled by themselves:
More information Number, Purpose ...
| Number | Purpose | 
999 or 112 | Emergency services | 
13xxx | Carrier preselect codes | 
1471 | Last-call return | 
171 | Mobile and fixed line voicemail | 
172, 173, 174X and 179 | Reserved for network use | 
1901 to 1999 | Helpline / customer service numbers for telecommunications companies. All are free of charge. | 
199000 | Identifies current number on OpenEir PSTN & ISDN lines. | 
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The following codes begin special phone numbers:
More information Code, Purpose ...
| Code | Purpose | 
116xxx | Harmonised service of social value | 
118xx | Directory enquiries (multiple commercial providers offer a variety of services in this number range) | 
151X | Premium-rate numbers (per-call cost) | 
15X0 (X between 2 and 9 inclusive) | Premium rate numbers (per-minute cost) | 
1598 and 1599 | Premium rate adult services | 
1800 | National freephone / toll free | 
00800 | International freephone / toll free | 
1850 | Non-geographic - phased out 1 January 2022 | 
1890 | Non-geographic - phased out 1 January 2022 | 
1891 | Reduced cost internet access (possibly timed) | 
1892 | Local rate internet access (timed) | 
1893 | Variable cost internet access (timed) | 
199 | Network engineering tests | 
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The following prefix regular phone numbers in order to affect how they are handled:
More information Code, Purpose ...
| Code | Purpose | 
13 | Carrier Selection (Third party long distance, international and internet services). These codes override the default carrier. | 
141 | Withhold Caller ID (CLIR) - (overrides preset for this call only) | 
142 | Present Caller ID (CLIP) - (overrides preset for this call only) | 
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Legacy, Historic and Obsolete codes
More information Code, Purpose ...
| Code | Purpose | 
16 | Former International Access Code (replaced by EU standard 00)[when?] | 
03 | Formerly used for calls to Great Britain. The format was 03 + STD code + local number[when?] | 
08 | Formerly used for Northern Ireland landlines (Now 048). e.g. Belfast 01232 xxx xxx was reached by dialling 08 01232 xxx xxx[when?] | 
084 | Formerly used for Belfast landlines[when?] | 
10 | National operator assistance (withdrawn in 2007) | 
114 | International operator assistance (withdrawn in 2007) | 
910 | Operator-assisted calls to some areas without direct dialling (withdrawn in the early 1980s) | 
1190 | Telecom Éireann national directory assistance (withdrawn in the early 2000s and replaced with 11811, originally 190) | 
1197 | Telecom Éireann UK directory assistance (withdrawn in the early 2000s and replaced with 11818, originally 197) | 
1198 | Telecom Éireann international directory assistance (withdrawn in the early 2000s and replaced with 11818, originally 198) | 
191 | Telecom Éireann repair services (withdrawn in the late 1990s) | 
196 | Telemessaging services, whereby callers could ask an operator to send a postcard with a printed message (withdrawn in the late 1990s) | 
1191 | Speaking clock (withdrawn on 27 August 2018) | 
0300 | Premium Rate (Now 15XX) | 
17 | Callback tests (Service codes may be contained in 19 range, but are not published) | 
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Historical Great Britain access codes (Discontinued in 1993)
More information Code, Purpose ...
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