Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.CIPv6 ReadinessActionNo IPv6 supportREVIEW
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.
Source: Google IPv6 stats
BCrawlabilityrobots.txt present, sitemap with 4087 URLsREVIEW
Search engines may not be able to parse the sitemap. Fix XML validation errors.
An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.
Learn more ▾ ▴
Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.
Source: sitemaps.org / Google Search Central
#v1.2
User-agent: *
Crawl-delay: 10
# Specific rules for search engine bots
User-agent: Googlebot
Allow: /
User-agent: Bingbot
Allow: /
Crawl-delay: 90
User-agent: AdsBot-Google
Allow: /
User-agent: AdsBot-Google-Mobile
Allow: /
User-agent: AhrefsBot
Allow: /
User-agent: AhrefsSiteAudit
Allow: /
User-agent: SiteAuditBot
Allow: /
User-agent: Screaming Frog SEO Spider
Allow: /
User-agent: SemrushBot
Allow: /
# Special handling for some other bots
User-agent: YandexBot
Disallow: /
User-agent: Mail.RU
Disallow: /
# Sitemap Locations
# Directories
User-agent: *
Disallow: /app/
Disallow: /bin/
Disallow: /dev/
Disallow: /lib/
Disallow: /phpserver/
Disallow: /pkginfo/
Disallow: /pub/
Disallow: /api/
Disallow: /setup/
Disallow: /update/
Disallow: /var/
Disallow: /vendor/
# Paths (clean URLs)
Disallow: /cart
Disallow: /checkout
Disallow: /checkout/thank-you
Disallow: /my-account*
Disallow: /compare
Disallow: /track-order/
Disallow: /order-information/
Disallow: /search*
Disallow: /*?itemsPerPage=
Disallow: /search?q=*
Disallow: /index.php/
Disallow: /catalog/
Disallow: /catalog/product_compare/
Disallow: /catalog/category/view/
Disallow: /catalog/product/view/
Disallow: /catalogsearch/
Disallow: /control/
Disallow: /contacts/
Disallow: /customer/
Disallow: /customize/
Disallow: /newsletter/
Disallow: /sendfriend/
Disallow: /wishlist/
Disallow: /tag/
Disallow: /report/
Disallow: /review/
Disallow: *?bvstate=*
Disallow: /*SID=
# Files
Disallow: /composer.json
Disallow: /composer.lock
Disallow: /CONTRIBUTING.md
Disallow: /CONTRIBUTOR_LICENSE_AGREEMENT.html
Disallow: /COPYING.txt
Disallow: /Gruntfile.js
Disallow: /LICENSE.txt
Disallow: /LICENSE_AFL.txt
Disallow: /ISSUE_TEMPLATE.md
Disallow: /nginx.conf.sample
Disallow: /package.json
Disallow: /php.ini.sample
Disallow: /RELEASE_NOTES.txt
# Do not index pages that are sorted or filtered.
Disallow: /*?*product_list_mode=
Disallow: /*?*product_list_order=
Disallow: /*?*limit=
Disallow: /*?*product_list_dir=
Disallow: /*?*p=
Disallow: /*?*color=
Disallow: /*?*manufacturer=
Disallow: /*?*price=
Disallow: /*?*category=
Disallow: /*?*brand=
# Do not index session ID
Disallow: /*.php$
Disallow: /*?SID=
# CVS, SVN directory and dump files
Disallow: /*.cvs
Disallow: /*.zip$
Disallow: /*.svn$
Disallow: /*.idea$
Disallow: /*.sql$
Disallow: /*.sql.gz$
Disallow: /*.tgz$
Disallow: /*.tar.gz$
Disallow: /*.tar.bz2$
Sitemap: https://www.sparkfun.com/media/sitemap.xml
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations79 days until leaf cert expires — 4 issues to addressREVIEW
Certificate validity
Recommended actions
- Add includeSubDomains to the HSTS directive
- Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
- Enable DNSSEC on your domain for DNS spoofing protection
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+DNS Records4 A records, 40 ms lookupPASS
| A | 151.101.1.124, 151.101.129.124, 151.101.193.124, 151.101.65.124 |
| AAAA | — |
| CNAME | — |
| NS | ns-1172.awsdns-18.org, ns-1895.awsdns-44.co.uk, ns-455.awsdns-56.com, ns-572.awsdns-07.net |
| MX | 1 aspmx.l.google.com 5 alt1.aspmx.l.google.com 5 alt2.aspmx.l.google.com 10 aspmx3.googlemail.com 10 aspmx2.googlemail.com |
| TXT | google-site-verification=-0VgJBoPVznuJziba8fIy83GvDxd9psfnz18hLgsDJU google-site-verification=Bem5rgouHEJQtkF9DMW2FHN8y7iNFxEMOeXROHTnr9Y google-site-verification=Bpdqek1Sm5eAVsHTrt4NPj4zDfPnSq6sJYUeJVNh5Iw google-site-verification=CH2DN8785glkgvZd4iD9jgAVHXhytaNQ6QpMPm2QxHw google-site-verification=TsuOEn-VsWVe77YpX0ofpydqkrRFkLtDQMCxe_dfxwE SPF v=spf1 include:amazonses.com include:_spf.google.com include:2224003.spf01.hubsp... |
| CAA | Lookup not available with standard resolver |
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
ARedirect Chain1 redirect(s), 107 ms totalPASS
https://sparkfun.com
53 ms · HTTP/1.1
https://www.sparkfun.com/
55 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://sparkfun.com | 301 | 53 ms | HTTP/1.1 | |
| 2 | https://www.sparkfun.com/ | 200 | 55 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
A+Domain Intelligencesparkfun.com — via NameCheap, Inc., 23 years, 8 months old, hosted on FastlyPASS
183 days
December 16, 2026
79 days
Issued by Let's Encrypt
23 years, 8 months
Registered December 16, 2002
Not enabled
Protects against DNS spoofing
Fastly
ASN AS54113
151.101.193.124
NameCheap, Inc.
Expiry timeline
Recommended actions
- Enable DNSSEC to protect visitors from DNS spoofing
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.
Learn more ▾ ▴
DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.
Source: ICANN / RFC 4033
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.
Learn more ▾ ▴
Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.
Source: ICANN / domain-security best practice