Reserved values directory

Safe test values

Copy domains, IP addresses, phone numbers, URLs, and identifiers designed for documentation and non-production testing.

Values that should not reach real people

Always confirm the rules of your own test environment before sending email, SMS, or network requests.

12 values shown

Email & domains

Example emailqa.user@example.comReserved example domain
Documentation domainexample.orgReserved for examples
Invalid TLDservice.invalidGuaranteed non-resolving TLD

Network

IPv4 TEST-NET-1192.0.2.42Documentation address block
IPv4 TEST-NET-2198.51.100.23Documentation address block
IPv6 documentation2001:db8::42Documentation prefix

Phone & location

US fictional phone+1 202-555-0147555-01xx fictional range
UK drama phone+44 7700 900123Reserved UK drama range
Example postal address123 Example Street, TestvilleObvious fictional address

URLs & identifiers

Callback URLhttps://example.com/oauth/callbackSafe documentation URL
UUID nil value00000000-0000-0000-0000-000000000000Known empty UUID
Reserved usernametest_user_001Clearly marked test account