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
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations88 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
Recommended actions
- Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
- 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
BCDN & DeliveryCloudflare (BYPASS)REVIEW
A+DNS Records2 A records, 59 ms lookupPASS
| A | 141.193.213.11, 141.193.213.10 |
| AAAA | — |
| CNAME | — |
| NS | leo.ns.cloudflare.com, emma.ns.cloudflare.com |
| MX | 1 ASPMX.L.GOOGLE.com 5 ALT1.ASPMX.L.GOOGLE.com 5 alt2.ASPMX.L.GOOGLE.com 10 alt4.ASPMX.L.GOOGLE.com 10 alt3.ASPMX.L.GOOGLE.com |
| TXT | 8d8h3r3vtuh0tvl2el70s57ir9 google-site-verification=Bj48pwkKwARMjQ6ccaMuUv_iciwR6NpLkTDXG0fSh1I MS=ms18345035 2bal4baq54uka61jiv6mruabck google-site-verification=aQ5wlhFRRLU5azKLqVe1NFTGs2sCbvns9GuIEiCDMks bmFbgO2FG71UxNRUMcXpzx9e03P8iQauzugjjKFLJN2JesHBXCCEIvEfTbBxenYzswYRxgz/2sydAt0v... 0ed1fe018a9de38b907c7c458caf9510 7fa80betd4e7fe1seognb8g0pk SPF v=spf1 include:_spf.google.com ~all etk1in20soi028ph0dk4odrf9m facebook-domain-verification=g1gnepzz88je0ng1fds4jnm0ere28i google-gws-recovery-domain-verification=52451732 google-site-verification=njHBAlVlY7dCkCTGxAvon5pdN-b585UFZtmmrciq9yE CU2565XfDGfHVGdkHr2tZiRBzWWSl4HvKqnWm23KRMI4hbEe0Mdf/Gk9N1NZaVp2p3h3h4JzSlXb9OFB... |
| 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), 450 ms totalPASS
https://astronomy.com
185 ms · HTTP/1.1
https://www.astronomy.com/
265 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://astronomy.com | 301 | 185 ms | HTTP/1.1 | cloudflare |
| 2 | https://www.astronomy.com/ | 200 | 265 ms | HTTP/1.1 | cloudflare |
See the visual redirect chain in the HTTP Probe tab →
A+Crawlabilityrobots.txt present, sitemap with 23 URLsPASS
Crawl-delay: 10
# START YOAST BLOCK
# ---------------------------
User-agent: *
Disallow:
Sitemap: https://www.astronomy.com/sitemap_index.xml
# ---------------------------
# END YOAST BLOCK
- https://www.astronomy.com/post-sitemap.x...
- https://www.astronomy.com/post-sitemap2....
- https://www.astronomy.com/post-sitemap3....
- https://www.astronomy.com/post-sitemap4....
- https://www.astronomy.com/post-sitemap5....
- https://www.astronomy.com/post-sitemap6....
- https://www.astronomy.com/post-sitemap7....
- https://www.astronomy.com/post-sitemap8....
- https://www.astronomy.com/post-sitemap9....
- https://www.astronomy.com/post-sitemap10...
- https://www.astronomy.com/post-sitemap11...
- https://www.astronomy.com/post-sitemap12...
- https://www.astronomy.com/post-sitemap13...
- https://www.astronomy.com/post-sitemap14...
- https://www.astronomy.com/post-sitemap15...
- https://www.astronomy.com/post-sitemap16...
- https://www.astronomy.com/post-sitemap17...
- https://www.astronomy.com/page-sitemap.x...
- https://www.astronomy.com/potd-sitemap.x...
- https://www.astronomy.com/category-sitem...
- https://www.astronomy.com/post_tag-sitem...
- https://www.astronomy.com/issues-sitemap...
- https://www.astronomy.com/author-sitemap...
A+Domain Intelligenceastronomy.com — via GoDaddy.com, LLC, 31 years, 8 months old, hosted on CloudflarePASS
938 days
January 9, 2029
88 days
Issued by Let's Encrypt
31 years, 8 months
Registered January 10, 1995
Not enabled
Protects against DNS spoofing
Cloudflare
ASN AS209242
141.193.213.11
GoDaddy.com, LLC
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