costco.com
AI Security Summary
85/100 — trusted. Long-established domain (29.5 years old), clean threat reputation, no impersonation patterns. Verdict driven by: no privacy policy found; no terms of service found; no contact page found — worth extra caution before trusting.
The server is reachable but did not return a success status.
Addressing this signal prevents trust downgrades and potential security risks.
View Glossary Guide- HTTPS is enforced
- Fast response (260ms)
- Served through Cloudflare
- 1 address record(s) resolved
- 6 authoritative nameservers
- Domain registered 29+ years ago
- Owner information disclosed
- HTTPS encryption active & verified
- Missing HSTS
- Missing Content Security Policy
- No mobile viewport meta tag
- Page has no <title>
- No privacy policy found
- No terms of service found
- No contact page found
- Site returned HTTP 520
- Registrar Name
- CSC Corporate Domains, Inc.
- Creation Date
- March 17, 1997 (29.5 years ago)
- Last Updated
- March 15, 2026
- Registry Expiry Date
- March 18, 2027
- WHOIS Privacy Protection
- Publicly Visible
- Domain Status Codes
- client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
- IPv4 Addresses (A)
- 23.14.94.16
- IPv6 Addresses (AAAA)
- None
- Mail Servers (MX)
- mx0a-001f9d01.pphosted.com (Priority: 10), mx0b-001f9d01.pphosted.com (Priority: 10)
- Authoritative Nameservers (NS)
- a28-66.akam.net, a9-66.akam.net, a5-64.akam.net, a14-67.akam.net, a6-64.akam.net, a1-116.akam.net
- TXT Records Found
- 30 TXT verification records
- Registrable Domain
- costco.com
- Registrar Organization
- CSC Corporate Domains, Inc.
- WHOIS Privacy Status
- Public Registration Data
- Registry Status Codes
- client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
- Delegated Authoritative Nameservers
- a1-116.akam.net, a14-67.akam.net, a28-66.akam.net, a5-64.akam.net, a6-64.akam.net, a9-66.akam.net
- Registration Lifecycle
- Registered: 1997 → Expires: 2027
- SPF Record
- v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
- DMARC Policy Mode
- Policy: REJECT
- DMARC Raw Record
- v=DMARC1; p=reject; sp=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com;
- DKIM Selectors Detected
- google, s1, s2
- Root Domain Label
- costco
- Top-Level Domain (TLD)
- .com (Standard TLD)
- Punycode Obfuscation
- No (Standard ASCII)
- Homoglyph / Lookalike Script
- No mixed scripts
- Brand Match Analysis
- No recognized brand impersonation
- Typosquatting Risk
- Clean
- HTML Title
- —
- Meta Description
- —
- Document Language
- en
- Character Encoding
- utf-8
- Viewport Setting
- width=device-width
- Generator Software
- —
- HTTP Response Time
- 260 ms
- Payload Body Size
- 0 KB
- Compression Status
- Uncompressed
- Cache Directives
- private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
85/100 — trusted. Long-established domain (29.5 years old), clean threat reputation, no impersonation patterns. Verdict driven by: no privacy policy found; no terms of service found; no contact page found — worth extra caution before trusting.
- Payment Red Flags
- None (No suspicious payment requests)
- High-Pressure Language
- None (No artificial urgency detected)
- Disposable Domain Risk
- No (Established infrastructure)
- Text Scanned Depth
- 16 characters verified
- Primary Web Server
- cloudflare
- CDN / Cloud Provider
- Cloudflare
- Primary IP Address
- 23.14.94.16
- HTTP Status Code
- 520 OK
- Final Landing Destination
- https://www.costco.com/
- Redirect Hop Count
- 1 hop
- 1.https://costco.com/ → https://www.costco.com/
- Certificate Authority (Issuer)
- Standard Trusted CA
- Subject Common Name (CN)
- costco.com
- Validity Period
- 60 days remaining (Expires: 2026-11-04T10:55:13.169Z)
- Subject Alternative Names (SANs)
- 1 domain protected
- Certificates Logged (CT)
- 1 certs recorded
- Robots.txt Directives
- Present & Configured
- Sitemaps Declared
- https://www.costco.com/sitemap_lw_index.xml
- Disallow Rules Count
- 54 rules
View Raw robots.txt
# robots.txt for https://www.costco.com User-agent: * # Disallow: /*AboutUsView* # Disallow: /*CTOProductChooserView* # Disallow: /*CTOProductConfigurationView* # Disallow: /*CTOProductSummaryView* # Disallow: /*CashCardBalanceDisplayView* # Disallow: /*CashCardBalanceInquiry* # Disallow: /*CatalogAttachmentView* # Disallow: /*CatalogSearch* # Disallow: /*CatalogSearchInkJsonView* # Disallow: /*CatalogSearchResultView* # Disallow: /*CategoryDisplay* # Disallow: /*CategoryDisplayView* # Disallow: /*CategoryOnlyResultsDisplayView* # Disallow: /*ClickInfo* # Disallow: /*CompareProductsDisplay* # Disallow: /*ContactUsSendMessageView* # Disallow: /*ContactUsView* # Disallow: /*CostcoCashCardProcess* # Disallow: /*CostcoWarehouseListDisplayView* # Disallow: /*CreateStoreView* # Disallow: /*DefaultSitemapView* # Disallow: /*FaqView* # Disallow: /*GetCatalogEntryDetailsByID* # Disallow: /*GetCatalogEntryInventoryData* # Disallow: /*HelpContactUsView* # Disallow: /*NavigationView* # Disallow: /*OrderByItemsDisplayView* # Disallow: /*PrivacyView* # Disallow: /*ProductDisplay* # Disallow: /*ProductDisplayErrorView* # Disallow: /*ProductDisplayView* # Disallow: /*SharedWishListView* # Disallow: /*SiteMapView* # Disallow: /*StoreCatalogDisplay* # Disallow: /*StoreCatalogDisplayView* # Disallow: /*StoreView* # Disallow: /*SubCatListDisplayView* # Disallow: /*TopCategoriesDisplay* # Disallow: /*TopCategoriesDisplayView* Disallow: /*WarehouseLocatorBrowseView* # Disallow: /*WarehouseLocatorDetailsView* # Disallow: /*WarehouseLocatorDirectionsView* # Disallow: /*WarehouseLocatorJSView* # Disallow: /*WarehouseLocatorView* # Disallow: /*WarehouseTiresLocatorView* # Disallow: /*WelcomeView* # Disallow: /*WishListDetailView* # Disallow: /*WishListResultDisplayView* # Disallow: /*dynamicJs* # Disallow: /*dynamic_css* # Account Management Disallow: /*AddressBookDisplayView* Disallow: /*ChangePassword* Disallow: /*CommunicationPreferenceView* Disallow: /*NonAjaxAddressBook* Disallow: /*OrderStatusCmd* Disallow: /*PaymentMethodDisplayView* Disallow: /*UserAccountView* Disallow: /*UserRegistrationErrorView* Disallow: /*CashCardBalanceInquiry* Disallow: /*CashCardFormView* # Checkout Flow Disallow: /*BillingPaymentDisplayView* Disallow: /*CheckoutReviewDisplayView* Disallow: /*CostcoOrderReview* Disallow: /*MultipleShipmentOrderSummaryView* Disallow: /*OrderBillingView* Disallow: /*OrderConfirmationView* # Error Pages Disallow: /*AccessControlErrorView* Disallow: /*AuthenticationPolicyErrorView* Disallow: /*CrossSiteRequestForgeryErrorView* Disallow: /*GenericApplicationError* Disallow: /*GenericError* Disallow: /*GenericSystemError* Disallow: /*InvalidInputErrorView* Disallow: /*InvalidProductView* Disallow: /*PasswordReEnterErrorView* Disallow: /*PreviewExclusionView* Disallow: /*ProductNotFoundView* Disallow: /*ProhibitedCharacterErrorView* # Sort and Filtering Query Parameters #Disallow: /*?*refine=* Disallow: /*?*pageSize=* Allow: /*?currentPage=*pageSize=* Disallow: /*?*sortBy=* # Logon/Logoff Flow # Disallow: /*LogonForm* Disallow: /RegisterAccount* Disallow: /UserRegistrationForm* Disallow: /*ResetPassword* Disallow: /Logoff* # Order History Disallow: /*ListOrdersDisplayTableView* Disallow: /*ListOrdersDisplayView* Disallow: /*OrderStatusDetailsView* Disallow: /*OrderStatusSummaryFSAView* Disallow: /*OrderStatusSummaryView* Disallow: /*OrderStatusTableDetailsDisplay* # Legacy References Disallow: /Browse/ Disallow: /Common/ Disallow: /Warehouse/ Disallow: /CatalogSearch* # Email Pages # Added for story stry0143138 #Disallow: /EmailFriendView* # Mobile optimization # Added for story stry0143140 Disallow: /*AjaxManageShoppingCartCmd* Disallow: /*CTOConfigureCmd* Disallow: /*WarehouseLocatorDirectionsView* Disallow: /Pharmacy/AccountRegister Disallow: /SiteMap$ Disallow: /SiteMap?* Disallow: /*OrderByItemsDisplayView* Disallow: /*OrderDefinitionView* Disallow: /*SharedWishListView* Sitemap: https://www.costco.com/sitemap_lw_index.xml
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Download the complete official PDF verification report (all sections and technical signals expanded), or export raw JSON telemetry.
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