Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
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
BCrawlabilityno robots.txt, no sitemapREVIEW
robots.txt is optional but recommended. It tells search engine crawlers which pages to index.
No robots.txt — crawlers fetch /robots.txt and get 404; not breaking but means default crawl behavior with no directives or sitemap reference.
Learn more ▾ ▴
A minimal robots.txt with `User-agent: * / Allow: / / Sitemap: https://example.com/sitemap.xml` covers the basics. Without it, crawlers behave fine but lose the sitemap signal and can't be selectively blocked from crawl-traps.
Source: robotstxt.org
A sitemap helps search engines discover and index your pages more efficiently.
No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.
Learn more ▾ ▴
A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.
Source: sitemaps.org / Google Search Central
No robots.txt found
This is fine for most sites — a missing robots.txt allows all crawling by default.
No sitemap found
Adding a sitemap helps search engines discover your pages.
BTLS Certificate Expiry & Recommendations185 days until leaf cert expires — 4 issues to addressREVIEW
Certificate validity
Recommended actions
- Prefer TLS 1.3 — TLS 1.2 is acceptable but TLS 1.3 removes RSA key exchange and improves latency
- 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
A+DNS Records1 A records, 15 ms lookupPASS
| A | 208.89.143.75 |
| AAAA | — |
| CNAME | — |
| NS | pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info, pdns6.ultradns.co.uk |
| MX | 10 mxb-002a2102.gslb.pphosted.com 10 mxa-002a2102.gslb.pphosted.com |
| TXT | MS=ms11598757 e2ma-verification=q2afb asv=73c36ff52101a69a1b8edf15f3946087 apple-domain-verification=NLwljc2pUNiaFNR3 9iZ7Fk852r09E6_XPAQi8PZp_1Ge4XzV0ZhGf9IInF4 QuoVadis=45cd3cbb-d76e-44d3-8304-3b523ddaff3a QuoVadis=d6fa4bc1-5927-4681-9e52-361139afaa36 zscaler-verification-209720-04082025-6tqcos54 mentimeter-bdf8175a-2540-486f-9195-2b7658983da2 traction-guest=68544901-435e-45ac-b82f-1811c0071a38 amazonses:4wrGG4GXEOYCNOuizePZZs4oHCQ6fGrQUrw06fjagw4= amazonses:96PPY81I9FNkoAyhls2HLO/dgg1lYEHmcl2B7WAujJ4= amazonses:FMJ7zs3Syzo36PqI6A6GosJpX7iHD8507Jvt8A3XacA= amazonses:WIIC+7amiaABMkwtU6uN796hlZoUbByWp+iTGD4vRNg= bugcrowd-verification=d7979e9436a78796a6ea56c131e356d0 openai-domain-verification=dv-c2CSBw3Ur0Iy8LqISdbAKhli adobe-sign-verification=187b5cf12d4334933dee7d004a2f3b3a miro-verification=cbee4d7b84d2aeffd45ba4fd919b8cffb555bc51 smartsheet-site-validation=Ut-iusf5whtvSQgdJIMmi2QMGFpD6adO teamviewer-sso-verification=e6d472220a1a4fa5805798babe01a9e4 bill-one-domain-verification=e152f6c9-8d86-4bf4-b2bc-81db20d8b94a google-site-verification=LoFA9-usUDssQrZ7-vETH4ZF2TpY4mtlFixFT_z57h8 google-site-verification=TdjTprSfoPngrCIE2cdWwb6wNdpVIX_haQDvDuAa5Bk google-site-verification=xgy2u4YmNV9c8yeS-GH7zFgdc51uqus9LcHg8JJm_dU google-site-verification=jP616X1CAcJOYbiJNUVgoD0KIK4Xr5S-1mcqBxTTzc4
atlassian-sending-domain-verification=2bb5aa55-2d40-46d0-89e3-9cc9f520ce68 BrFyQRhreQEqKHEftwD9g/jbQHZurC6EuV+VeAMm+bCTjdJVn0SgimOLIXacBjDPwI4jCRRX0FkQHZiu... adobe-idp-site-verification=278c0e0cd77700017cdd57ca7fe14f93b8c374ca0244d7b68543... atlassian-domain-verification=etKzmRbbAHVPDsXqbNu4oTUfqy1qEQMCer8Oajjx2IoR8XN6tj... cisco-ci-domain-verification=6a693ffb43cabcec92a212f07040b868fa9d741f931f965d78f... webexdomainverification.7004e8455833ea7de053ab06fc0a4a46=5c6bd1a2-3537-4b58-9843... webexdomainverification.711462fb2a18d2fce053ad06fc0aac35=41ff915f-c887-499b-90c1... atlassian-domain-verification=0VOnaMpauqIecCcR6GJhVgvNhKDyesmJmHvOwmCz5342IMJAjq... atlassian-domain-verification=GnP2wfQ5KWIZZHySxcaefgqfQCGx9fjEUktPSvqyjn7p+yRpwi... atlassian-domain-verification=eANs0/al0teAVVz7CVwu7sai2dpM11ebrZ8rbTqW9mkdZTV5bm... dell-technologies-domain-verification=thermofisher.com_552632c1-55b8-4697-88a3-c... wrike-verification=MzIzNTc3OjFhYTYxOTEyZDBmODk3MjhiMzVhMTYyZjBjNzc0YWYzZGI1MThmN... v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCYBVeaeO/MthoLI4Que0g/CK... =p:MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA13290Wqco6ezruvtiAvODwPrv8uDBUQBd... SPF v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:_spf-a.thermofisher.... |
| CAA | Lookup not available with standard resolver |
Multiple A records provide failover if one server goes down.
Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.
Learn more ▾ ▴
Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.
Source: SRE practice / DNS architecture
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.
A+Redirect Chain0 redirect(s), 89 ms totalPASS
https://thermofisher.com
89 ms · HTTP/1.0 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://thermofisher.com | 301 | 89 ms | HTTP/1.0 | BigIP |
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencethermofisher.com — via MarkMonitor Inc., 20 years, 2 months old, hosted on 1999FISHERSYS - Fisher Scientific, USPASS
294 days
May 8, 2027
185 days
Issued by Sectigo Limited
20 years, 2 months
Registered May 8, 2006
Not enabled
Protects against DNS spoofing
1999FISHERSYS - Fisher Scientific, US
ASN AS13812
208.89.143.75
MarkMonitor 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