The Tool Desk
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1. Check the website for a direct credit
Look for wording such as “site by,” “designed by” or “developed by” in the footer, About or Contact page, privacy policy, terms, or other legal pages. A named agency or developer is a useful, direct attribution lead. Check whether the credit is still present on the live site and what role it actually claims: a credit for a redesign, for example, does not necessarily mean that team built every version of the site.
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If you find no credit, this method has not established who built the site. Move on rather than treating the site owner’s name as the developer’s.
2. Search the exact domain with attribution phrases
Search the domain in quotation marks alongside phrases such as “built by,” “designed by,” “developed by” or “website by.” If you find a candidate, search that person or agency with the business name and domain. A search result can point you toward an attribution, but it is not confirmation by itself. ICANN’s 2016 consumer survey lists Google searches and information on the website among approaches people report using to identify a site’s creator: ICANN consumer research.
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3. Inspect the page source and metadata
In a desktop browser, use the page’s “View Source” command or open developer tools and inspect the HTML. Look for an explicit developer credit, comments, generator metadata, theme names, asset paths or links that identify a studio. These traces may reveal the technology or a possible contributor, but a CMS, framework or theme does not identify the person who implemented the site. Treat a technical fingerprint as a lead unless it names a creator and you can corroborate the claim elsewhere.
4. Check the domain’s registration record with ICANN Lookup
Use ICANN Lookup to check publicly available registration information. A record may show a registrant’s name and contact details, but privacy or proxy protection can mask them. ICANN explains that registration information is not necessarily public in full: ICANN registration data information.
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Since 28 January 2025, ICANN’s Registration Data Access Protocol (RDAP) has been the definitive source for generic top-level domain (gTLD) registration information, replacing sunsetted WHOIS services. ICANN recommends its RDAP-based Lookup for these records: ICANN’s RDAP and WHOIS update. A registration record identifies the recorded registrant when visible, not necessarily the website’s designer or developer.
5. Separate the builder from the registrar and host
A registrar handles domain registration; a hosting provider supplies services that make a website available. They may be different companies, and neither role identifies who designed or coded the site. ICANN explains that a domain name is not the website itself and that registration and hosting can be separate: ICANN General Questions.
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DNS, IP-address and hosting lookups can help identify infrastructure providers or intermediaries. Use them to understand where a site’s services point, not to attribute authorship. Even a developer listed as the domain registrant may have registered the domain for a client; that record alone does not prove the developer built the site.
6. Verify candidates against portfolios and case studies
If the site credits a possible developer, look for the project on that person’s or agency’s own portfolio. Check that the project page names the same client and displays the same domain, and note whether it describes the current site, a redesign or an earlier version. A first-party case study or direct confirmation is stronger than an unattributed directory listing.
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If no credit is visible, try searching the business name with “website redesign” or “case study.” A portfolio entry that matches the business is useful corroboration, but make sure it supports the specific claim you plan to make.
7. Compare archived versions for older credits
Earlier versions of a site may preserve a footer credit that has since disappeared or show when a redesign changed the attribution. Compare an older capture with the live site and record the capture date. An archived credit can support a claim about the version captured; it does not establish who built a later redesign. Archive availability and coverage are not guaranteed.
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How to judge what the evidence actually proves
| Evidence | What it can support | What it does not prove alone |
|---|---|---|
| Current “site by” or design credit | The named person or agency claims a design or build role. | That the credit is current or covers every part of development. |
| First-party portfolio or case study | The candidate publicly associates a project with their work. | That the live site is unchanged from the project shown. |
| Public domain registration record | The identity recorded as registrant, when information is visible. | Who designed or coded the website; privacy services may obscure the record. |
| Registrar information | Which company handles domain registration. | Who hosts or built the site. |
| DNS, IP or hosting clue | An infrastructure or service-provider lead. | Who created the website. |
| CMS, theme or source clue | The technology used, or an explicit code credit if one appears. | Individual authorship without corroboration. |
| Archived credit | Historical attribution for the version captured. | Who built a later version or redesign. |
For a defensible attribution, look for at least two independent clues—for example, a live-site credit and a matching case study on the developer’s own site. This is a practical cross-check, not an ICANN standard. State the narrowest claim the evidence supports: “credited for the redesign” is more accurate than “built the website” when only a redesign credit is established.
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