SMS Alerts

Configure SMS text messages and phone call notifications for critical alerts and emergency escalation

Monitoring as Code: Learn more about the SMS Alert Channel Construct.

The phone numbers used for SMS alerting need to be in E.164 format format. Stick to the following rules and you’ll be fine:

• Prepend international access codes with a + sign
• Do not use any white spaces
• Use up to 15 characters

You can add as many SMS channels as you like.

Supported countries and regions

North America

Anguilla (+1264)	Antigua and Barbuda (+1268)
Aruba (+297)	Ascension (+247)
Bahamas (+1242)	Barbados (+1246)
Belize (+501)	Bermuda (+1441)
Canada (+1)	Cayman Islands (+1345)
Costa Rica (+506)	Cuba (+53)
Curaçao and Caribbean Netherlands (Bonaire, Sint Eustatius, Sint Maarten, Saba) (+599)	Dominica (+1767)
Dominican Republic (+1829)	Dominican Republic (+1849)
Dominican Republic (+1809201)	Dominican Republic (+1809)
El Salvador (+503)	Greenland (+299)
Grenada (+1473)	Guadeloupe (+590)
Guatemala (+502)	Haiti (+509)
Honduras (+504)	Jamaica (+1876)
Martinique (+596)	Mexico (+52)
Montserrat (+1664)	Nicaragua (+505)
Panama (+507)	Puerto Rico (+1787)
St Kitts and Nevis (+1869)	St Lucia (+1758)
St Pierre and Miquelon (+508)	St Vincent Grenadines (+1784)
Trinidad and Tobago (+1868)	Turks and Caicos Islands (+1649)
United States (+1)	Virgin Islands, British (+1284)
Virgin Islands, U.S. (+1340)

Asia

Afghanistan (+93)	Armenia (+374)
Azerbaijan (+994)	Bahrain (+973)
Bangladesh (+880)	Bhutan (+975)
Brunei (+673)	Cambodia (+855)
China (+86)	East Timor (+670)
Georgia (+995)	Hong Kong (+852)
India (+91)	Indonesia (+62)
Iran (+98)	Iraq (+964)
Israel (+972)	Japan (+81)
Jordan (+962)	Korea Dem People’s Rep (+850)
Korea Republic of (+82)	Kuwait (+965)
Kyrgyzstan (+996)	Laos PDR (+856)
Lebanon (+961)	Macau (+853)
Malaysia (+60)	Maldives (+960)
Mongolia (+976)	Myanmar (+95)
Nepal (+977)	Oman (+968)
Pakistan (+92)	Palestinian Territory (+970, +972)
Philippines (+63)	Qatar (+974)
Saudi Arabia (+966)	Singapore (+65)
Sri Lanka (+94)	Syria (+963)
Taiwan (+886)	Tajikistan (+992)
Thailand (+66)	Turkiye (+90)
Turkmenistan (+993)	United Arab Emirates (+971)
Uzbekistan (+998)	Vietnam (+84)
Yemen (+967)

Europe

Albania (+355)	Andorra (+376)
Austria (+43)	Belarus (+375)
Belgium (+32)	Bosnia and Herzegovina (+387)
Bulgaria (+359)	Canary Islands (+3491)
Croatia (+385)	Cyprus (+357)
Czech Republic (+420)	Denmark (+45)
Estonia (+372)	Faroe Islands (+298)
Finland/Aland Islands (+358)	France (+33)
Germany (+49)	Gibraltar (+350)
Greece (+30)	Guernsey/Jersey (+44)
Hungary (+36)	Iceland (+354)
Ireland (+353)	Isle of Man (+44)
Italy (+39)	Kosovo (+383)
Latvia (+371)	Liechtenstein (+423)
Lithuania (+370)	Luxembourg (+352)
Malta (+356)	Moldova (+373)
Monaco (+377)	Montenegro (+382)
Netherlands (+31)	Norway (+47)
Poland (+48)	Portugal (+351)
Republic of North Macedonia (+389)	Romania (+40)
San Marino (+378)	Serbia (+381)
Slovakia (+421)	Slovenia (+386)
Spain (+34)	Sweden (+46)
Switzerland (+41)	Turkish Republic of Northern Cyprus (+90)
Ukraine (+380)	United Kingdom (+44)
Vatican City (+379)

South America

Argentina (+54)	Bolivia (+591)
Brazil (+55)	Chile (+56)
Colombia (+57)	Ecuador (+593)
Falkland Islands (+500)	French Guiana (+594)
Guyana (+592)	Paraguay (+595)
Peru (+51)	Suriname (+597)
Uruguay (+598)	Venezuela (+58)

Africa

Algeria (+213)	Angola (+244)
Benin (+229)	Botswana (+267)
Burkina Faso (+226)	Burundi (+257)
Cameroon (+237)	Cape Verde (+238)
Central Africa (+236)	Chad (+235)
Comoros (+269)	Congo (+242)
Congo, Dem Rep (+243)	Djibouti (+253)
Egypt (+20)	Equatorial Guinea (+240)
Eritrea (+291)	Ethiopia (+251)
Gabon (+241)	Gambia (+220)
Ghana (+233)	Guinea (+224)
Guinea-Bissau (+245)	Ivory Coast (+225)
Kenya (+254)	Lesotho (+266)
Liberia (+231)	Libya (+218)
Madagascar (+261)	Malawi (+265)
Mali (+223)	Mauritania (+222)
Mauritius (+230)	Morocco/Western Sahara (+212)
Mozambique (+258)	Namibia (+264)
Niger (+227)	Nigeria (+234)
Reunion/Mayotte (+262)	Rwanda (+250)
Sao Tome and Principe (+239)	Senegal (+221)
Seychelles (+248)	Sierra Leone (+232)
Somalia (+252)	South Africa (+27)
South Sudan (+211)	Sudan (+249)
Swaziland (+268)	Tanzania (+255)
Togo (+228)	Tunisia (+216)
Uganda (+256)	Zambia (+260)
Zimbabwe (+263)

Oceania

American Samoa (+1684)	Australia/Cocos/Christmas Island (+61)
Cook Islands (+682)	Fiji (+679)
French Polynesia (+689)	Guam (+1671)
Kiribati (+686)	Marshall Islands (+692)
Micronesia (+691)	New Caledonia (+687)
New Zealand (+64)	Niue (+683)
Norfolk Island (+672)	Northern Mariana Islands (+1670)
Palau (+680)	Papua New Guinea (+675)
Samoa (+685)	Solomon Islands (+677)
Tonga (+676)	Tuvalu (+688)
Vanuatu (+678)	Wallis and Futuna (+681)

SMS alert number and sender ID

SMS alerts will be sent with a sender ID and phone number. The Checkly sender ID is ‘Checkly’. If your carrier does not support sender ID, you will instead see the Checkly SMS alert phone number, [phone].

For limits and other SMS-related questions, please refer to our Pricing page.