| Property | Value |
| Name | Costco Wholesale Membership Inc. |
| Organization | Costco Wholesale Membership, Inc. |
| admincontact@costco.com | |
| Address | 999 Lake Drive |
| Zip Code | 98027 |
| City | Issaquah |
| State | WA |
| Country | US |
| Phone | +1.4253138100 |
| Fax | +1.4254273120 |
| NameServer | cbru.br.ns.els-gms.att.net |
| Created | 1999-05-10 04:00:00 |
| Changed | 2016-05-06 06:11:57 |
| Expires | 2017-05-10 00:00:00 |
| Registrar | CSC CORPORATE DOMAIN |
| Date | IP Address |
| 2025-07-22 | 165.160.13.20 (ClassC) |
| 2025-08-03 | 165.160.15.20 (ClassC) |