Registered
- costcko.
com - Nov 2, 2026 — 4 days old
- costco.
com - Mar 17, 1997 — 29 years old
Compare two sites
Paste the link you were sent and the brand it claims to be.
AboutUs puts the two domains side by side — registration, DNS, HTTPS, email authentication, and Authority/Safety — so you can see what's actually different before you click through.
What's different
- Registered 4 days old vs 29 years old.
- Different registrar — costcko.com: Name.com, Inc.; costco.com: CSC Corporate Domains, Inc..
- Different nameservers — costcko.com uses Name.com; costco.com uses an unidentified provider.
Side-by-side facts for costcko.com and costco.com
Registrar
- costcko.
com - Name.com, Inc.
- costco.
com - CSC Corporate Domains, Inc.
Nameservers / DNS provider
- costcko.
com - ns1bcp.name.com, ns2knz.name.com (Name.com)
- costco.
com - a28-66.akam.net, a14-67.akam.net
HTTPS / certificate
- costcko.
com - The website responded over HTTPS. Certificate issued by Let's Encrypt (expires Jan 20, 2027).
- costco.
com - The website responded over HTTPS. Certificate issued by Certainly (expires Nov 11, 2026).
Email authentication
- costcko.
com - SPF: not found in saved lookup · DMARC: not found in saved lookup.
- costco.
com - SPF: record valid · DMARC: reject requested (p=reject).
Authority / Safety
- costcko.
com - Authority: not enough signals yet. Safety: Not enough signals yet.
- costco.
com - Authority 95/100. Safety 90/100 (Clear).
Verified-owner status
- costcko.
com - Claimable
- costco.
com - Claimable
AboutUs on record since
- costcko.
com - Not retrieved yet
- costco.
com - Since 2006
| Fact | costcko. | costco. |
|---|---|---|
| Registered | Nov 2, 2026 — 4 days old | Mar 17, 1997 — 29 years old |
| Registrar | Name.com, Inc. | CSC Corporate Domains, Inc. |
| Nameservers / DNS provider | ns1bcp.name.com, ns2knz.name.com (Name.com) | a28-66.akam.net, a14-67.akam.net |
| HTTPS / certificate | The website responded over HTTPS. Certificate issued by Let's Encrypt (expires Jan 20, 2027). | The website responded over HTTPS. Certificate issued by Certainly (expires Nov 11, 2026). |
| Email authentication | SPF: not found in saved lookup · DMARC: not found in saved lookup. | SPF: record valid · DMARC: reject requested (p=reject). |
| Authority / Safety | Authority: not enough signals yet. Safety: Not enough signals yet. | Authority 95/100. Safety 90/100 (Clear). |
| Verified-owner status | Claimable | Claimable |
| AboutUs on record since | Not retrieved yet | Since 2006 |
What to do next
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