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 & Recommendations190 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
A+DNS Records1 A records, 141 ms lookupPASS
| A | 40.117.169.225 |
| AAAA | — |
| CNAME | — |
| NS | a2-65.akam.net, a10-67.akam.net, a12-66.akam.net, a5-67.akam.net, a1-247.akam.net, a9-65.akam.net |
| MX | 50 ptc-com.mail.protection.outlook.com |
| TXT | globalsign-domain-verification=20E7E1DCC2151FFC1EF466C55445DF0E value=globalsign-domain-verification=20E7E1DCC2151FFC1EF466C55445DF0E apple-domain-verification=P6l6TKmBTWhGwPmK status-page-domain-verification=klpcpq7lzy88 O+716fz6zH7PhR6xPWbS1cugbKIHg3F8aW7OVXmxij6WX8xNxtvTtAztRfqUFjwjPbyaIcpEW3eo20+s... webexdomainverification.4C675B8ACADAB136E053AB06FC0A3F65=61d660e0-517d-49f1-a27d... 0m8vbcjz88gc5j2t8h2v5nxly9p1wtfx stripe-verification=9981f79781ed00ee04e165fc7ddb25c5191c368297d01d1f54d0742bb530... globalsign-domain-verification=7d369375921068ffca38064d9c7d5c43 onetrust-domain-verification=9a4dfa79cf524f9bb8a5f4a83bdf149 _30jd1q6we65eg3ibe2dfkpzesjcs8pg atlassian-domain-verification=0sxSLvulymJSftWUjLYW7BpgwKItZareavDlcLxMWKF5GjGGL3... matillion:ptc-com-saml QuoVadis=01a4114c-2ce5-4ce8-a534-0b557b379c6a miro-verification=d370a08d65cf415cca4b8e9663f7818953dda846 MS=ms20499661 postman-domain-verification=d043b06bdaba7fdefb3cac0e490cd396058e53d1ebe664c500a7... _sz9hr49e42kfb6aznugt0fh321s48s0 cb6efe28-eb5a-4dfd-971b-303db4683d6e identrust_validate=EQ87kzb2pRKha+dBQCTLWnXBZuCF353+8PphkqlXhqFI anthropic-domain-verification-2ft5xr=FX9aWN7gXolhaupUoFVrJYbTO globalsign-domain-verification=5B008804BBF2B6C0619D432FC692655A infoblox-domain-mastery=08563ec51ce9966f2ce965267b4f158c03c30e513d93d445ff940623... google-site-verification=yPAx4bpJd7uQpDVibLPcLdL34mTw7K7wbPQIboIpbYo mongodb-site-verification=GW2OmKNAinS7p7QIHApXc70AFwEyKXG4 ZOOM_verify_9QPB33cZQli2cpbtRLnZ3g ddg2x30pnd77rtyhztpnbmlpqfrlb5fd ibmid=79e79ef6-61a9-4ee2-a2da-fa431c6fbb55 google-site-verification=D9TM-DtJV-QYP-Z03Q0QMIWP1gX5-A7WcJnhj79MyQU google-site-verification=NnNrVC9Ghb4A0tUP21Iw-zgnLZ3NirVhqSUTnVpDiSE ps-cd-verification=a769dde2-8e74-473b-a741-bd46359d056a 0b26afca-948d-DocuSign-4ab3-beb8-0ffd47d8eb7b announcekit-verify=6du1tf1wzeU2f4s6BGlVan4niUdYV7 northpass-domain-verification=1868b232f0e7d65e8552472b993be781 cursor-domain-verification-bjr808=77IkAU0b4eb7ch81bO9LLDbOD wiz-domain-verification=1eb85fa5d4ba983d357c2672f8d096c873daec6077b91b7db379cfce... SPF v=spf1 ip4:54.79.0.4 ip4:52.16.38.44 ip4:52.16.49.62 ip4:132.68.32.25 ip4:52.16.... <03.04.2025> oci-domain-verification=jlA7em6NTLZ8lg0rWL48ltXNi0M72ma1inXor63DNS duo_sso_verification=tdRqnBRusRvv8yFqvZwE0LTdYvNey81JIpif24igiRUiLuMCVTrqa08GApW... vyj205pnrhx879b26swq98vvxz9n572s atlassian-domain-verification=ogBnepUpkAfZap04BhaIlXhdypVsJoYcaD/BBCUM6Vd8aVKqKk... reachdesk-verification=0KDaJWonfORj2Jo7qlIdmnouIs7VYzkfel2y61Nxh863sI111wJuMj1YL... mpx7vjrlqh0rk772rhph0wh00q2swt2n _wm4fcjxi89tfvd2ibzphl5y32p9xbrm globalsign-domain-verification=B890F8AD1EC4721C658FEBB23E3133C6 intersight=4dc12157293573cfcfda6f3c1a8fc219832a86c13ec6a16ffacc186090572391 cisco-ci-domain-verification=39cc8d35c3f55a4a83fd3e1cf81a1a83b85722c219798c6014e... globalsign-domain-verification=9bb072651054b80d6cd0fd83ab727670 onetrust-domain-verification=9a4dfa79cf524f9bb8a5f4a83bdf149f atlassian-domain-verification=atlassian-domain-verification=+ZnoyVUo/wNFswVuIDex... globalsign-domain-verification=48bdb914c3793073e8dd0c7339f91d09 |
| 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.
ARedirect Chain1 redirect(s), 483 ms totalPASS
https://ptc.com
422 ms · HTTP/1.1
https://www.ptc.com/
61 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://ptc.com | 301 | 422 ms | HTTP/1.1 | |
| 2 | https://www.ptc.com/ | 403 | 61 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
HTTP → HTTPS
Consistent
A+Domain Intelligenceptc.com — via Key-Systems GmbH, 32 years, 10 months old, hosted on Microsoft AzurePASS
906 days
December 8, 2028
190 days
Issued by IdenTrust
32 years, 10 months
Registered December 9, 1993
Not enabled
Protects against DNS spoofing
Microsoft Azure
ASN AS8075
40.117.169.225
Key-Systems GmbH
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