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
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations77 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
Recommended actions
- Submit your domain to hstspreload.org to be added to the Chrome preload list
- 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
ADNS Records2 A records, 337 ms lookupPASS
| A | 199.232.198.154, 199.232.194.154 |
| AAAA | — |
| CNAME | — |
| NS | ns-cloud-b2.googledomains.com, ns-cloud-b4.googledomains.com, ns-cloud-b1.googledomains.com, ns-cloud-b3.googledomains.com |
| MX | 1 smtp.google.com |
| TXT | knowbe4-site-verification=f250b2a70f1bef3a0d3e9e990a25ada0 google-site-verification=OEcQCk6m6XyHagDu-7BnHevLzPmjK8VLrehu0rHHPGs SPF v=spf1 mx ip4:64.30.227.218 ip4:64.30.226.54/31 ip4:74.125.148.0/22 ip4:216.239.... facebook-domain-verification=qxzu4bw9l67g1b59xbja9fqgyetsfq figma-domain-verification=4f7cdfa45ca39f617dd7ba7b165e1bfd5e9b5e1ec18b849c6098df... MS=ms65532728 canva-site-verification=Dq2WPizCkBmFzG8pX1jdkQ tollbit-domain-verification=ed765eec87445a9c7fc97d88202a4e247d115ec1dcce8b285564... google-site-verification=0MpBgJlty0QJTSbL0NsxKSMQao7AtbMttqQqLBpnuqo gpu99tm7bpjr5ffe6j6lff9c6g workplace-domain-verification=q8l8dtiG9ONhEmL8nIvj0Z5L2D5A3i adobe-idp-site-verification=b6e27597198dfc9921fbe2ad78e9a76012bb17d0ddb65389e600... google-site-verification=VvA5ip4lC7mt45ap9Ra_PNfXXe3OgEsWiV3ZySfTRKI amazonses:kWgTT8gEghPg1NxciZwhrB3xu+jSMwW8T80qgRg5Kyw= amazonses:tf7PxlKrP5loKZqpIoiHCfuwRc9LWPN35B8KBlvXYvU= google-site-verification=pYonWwLh0y5UIPReObylCHtCWHGz9YmWq9OI0NnlEOk qb5l10tv3ifansmtg2j67ls4vm |
| 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.
Slow DNS adds latency to every page load. Consider a faster DNS provider.
DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.
Source: DNS performance benchmarks
ARedirect Chain1 redirect(s), 866 ms totalPASS
https://zdnet.com
438 ms · HTTP/1.1
https://www.zdnet.com/
428 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://zdnet.com | 301 | 438 ms | HTTP/1.1 | |
| 2 | https://www.zdnet.com/ | 200 | 428 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
A+Crawlabilityrobots.txt present, sitemap with 25 URLsPASS
# www.robotstxt.org/
# www.google.com/support/webmasters/bin/answer.py?hl=en&answer=156449
# Ziff Davis content is made available for your non-commercial use subject to our
# Terms of Use here: https://www.ziffdavis.com/terms-of-use
# Use of any robot, crawler, or other tool to scrape, harvest, extract, or retrieve any content on
# this website using automated means is prohibited without written permission from Ziff Davis.
# Prohibited uses include but are not limited to:
# (1) text and data mining under Art. 4 of the EU Directive on Copyright in the Digital Single
# Market;
# (2) development or operation of artificial intelligence or machine learning software or
# databases, including by training, fine-tuning, embedding, and retrieval-augmented generation;
# (3) creating data sets containing our content or sharing it with others; and
# (4) any commercial purposes.
# Contact licensing@ziffdavis.com for assistance.
User-agent: *
Disallow: /user/*
Disallow: /members/
Disallow: /members/newsletters/
Disallow: /members/alerts/add/
Disallow: /search/
Disallow: *Xhr*
Disallow: */xhr*
Disallow: */ajax/*
Disallow: */fly/*/bundles/flyjs/*
Disallow: */libs/*
Disallow: */version!libs/*
Disallow: /.well-known/*
Disallow: /index.php/*
Disallow: *?beta=*
Disallow: *?ftag=*
User-agent: msnbot
Crawl-delay: 1
# Ziff Davis bot list
User-agent: AddSearchBot
User-agent: AI2Bot
User-Agent: Ai2Bot-DeepResearchEval
User-agent: Ai2Bot-Dolma
User-agent: Amazonbot
User-agent: AmazonBuyForMe
User-Agent: Anchor Browser
User-agent: anthropic-ai
User-agent: Applebot
User-agent: Applebot-extended
User-Agent: atlassian-bot
User-Agent: AutoRAG
User-agent: AwarioSmartBot
User-Agent: Big Sur AI
User-agent: bigsur.ai
User-Agent: Brandwatch
User-Agent: Bravebot
User-agent: Bytespider
User-agent: CCBot
User-agent: Channel3Bot
User-agent: ChatGLM-Spider
User-agent: ChatGPT-User
User-agent: Claude-SearchBot
User-agent: Claude-User
User-agent: Claude-Web
User-agent: ClaudeBot
User-agent: ClaudeBot
User-agent: cohere-ai
User-agent: cohere-training-data-crawler
User-agent: Cotoyogi
User-agent: Crawl4AI
User-agent: Datenbank Crawler
User-agent: DeepSeekBot
User-agent: Devin
User-agent: Diffbot
User-Agent: Direqt Anomura
User-agent: DuckAssistBot
User-Agent: Echobot Bot
User-agent: FacebookBot
User-Agent: Factset_spyderbot
User-agent: GPTBot
User-agent: iAsk
User-agent: iaskspider
User-Agent: ICC Crawler
User-agent: ICC-Crawler
User-agent: ImageSiftBot
User-agent: imageSpider
User-agent: Kangaroo Bot
User-Agent: KlaviyoAIBot
User-agent: Kunato
User-agent: laion-huggingface-processor
User-agent: LCC
User-Agent: LINER Bot
User-agent: LinerBot
User-agent: LinkupBot
User-agent: Manus-User
User-agent: meta-externalagent
User-agent: meta-externalfetcher
User-Agent: meta-webindexer
User-agent: mistral.ai
User-agent: MistralAI-User
User-agent: netEstate Imprint Crawler
User-agent: NovaAct
User-Agent: Novellum AI Crawl
User-agent: OAI-SearchBot
User-agent: omgili
User-agent: PanguBot
User-agent: PeopleInc-DCipher-Scraper/1.1.0
User-agent: Perplexity-User
User-agent: PerplexityBot
User-agent: PetalBot
User-agent: Poggio-Citations
User-agent: QualifiedBot
User-agent: SBIntuitionsBot
User-agent: SeekrBot
User-Agent: SemrushBot-OCOB
User-Agent: SemrushBotSwa
User-Agent: ShapBot
User-agent: Spider
User-agent: TavilyBot
User-agent: Timpibot
User-agent: TwinAgent
User-agent: Velen Crawler
User-Agent: VelenPublicWebCrawler
User-agent: Webzio-Extended
User-agent: Wrtn
User-agent: YouBot
User-agent: ZanistaBot
Allow: /article/how-ai-companies-are-secretly-collecting-training-data-from-the-web-and-why-it-matters/
Allow: /article/how-proxy-servers-actually-work-and-why-theyre-so-valuable/
Allow: /article/how-to-remove-your-personal-information-from-whitepages-in-5-steps-and-why-you-should/
Allow: /article/how-to-undo-a-reconciliation-in-quickbooks-online-the-easy-way/
Allow: /article/i-found-the-easiest-way-to-delete-myself-from-the-internet-and-why-you-shouldnt-wait-to-use-it-too/
Allow: /article/incogni-vs-deleteme/
Allow: /article/this-proxy-provider-i-tested-is-the-best-for-web-scraping-and-its-not-iproyal-or-marsproxies/
Disallow: /
# ZDnet bot list
User-agent: "008"
User-agent: AwarioRssBot
User-agent: AwarioSmartBot
User-agent: DDM-DCipher/1.0.7
User-agent: HTTrack
User-agent: Magpie-crawler
User-agent: Nutch
User-agent: Offline Explorer
User-agent: Omgilibot
User-agent: Peer39_crawler/1.0
User-agent: Scrapy
Disallow: /
Sitemap: https://www.zdnet.com/sitemaps/news.xml
Sitemap: https://www.zdnet.com/sitemaps/topics.xml
Sitemap: https://www.zdnet.com/sitemaps/article/index.xml
Sitemap: https://www.zdnet.com/sitemaps/gallery/index.xml
Sitemap: https://www.zdnet.com/sitemaps/video/index.xml
Sitemap: https://www.zdnet.com/sitemaps/review/index.xml
- https://www.zdnet.com/article/i-tried-googles-new-desktop-app/
- https://www.zdnet.com/a/img/2026/04/15/5b37ef6e-5a8e-437b-a626-1338df0806ed/untitled.jpg
- https://www.zdnet.com/article/microsoft-back-to-school-laptop-deal/
- https://www.zdnet.com/a/img/2024/09/18/4a26b383-e911-4127-9445-26dbe60872bb/microsoft-surface-laptop-6.jpg
- https://www.zdnet.com/home-and-office/home-entertainment/lg-b5-oled-tv-deal-best-buy/
A+Domain Intelligencezdnet.com — via CSC Corporate Domains, Inc., 31 years, 5 months old, hosted on FastlyPASS
1047 days
April 28, 2029
77 days
Issued by Let's Encrypt
31 years, 5 months
Registered April 27, 1995
Not enabled
Protects against DNS spoofing
Fastly
ASN AS54113
199.232.198.154
CSC Corporate Domains, 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