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
BCrawlabilityrobots.txt present, sitemap with 0 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
An empty sitemap provides no value. Add <url> entries for your pages.
An empty sitemap signals 'no content to index' to Google — actively harmful versus having no sitemap at all.
Learn more ▾ ▴
Google compares URLs in the sitemap against URLs it has crawled. An empty sitemap on a site with thousands of pages signals abandonment. Either populate it correctly (most CMSes auto-generate) or delete the file and let Google crawl normally.
Source: Google Search Central / sitemaps.org
Sitemap: https://www.sfgate.com/sitemap.xml
Sitemap: https://www.sfgate.com/sitemap_news.xml
User-agent: ai2bot-dolma
User-agent: anthropic-ai
User-agent: applebot-extended
User-agent: bytespider
User-agent: ccbot
User-agent: claude-user
User-agent: claude-web
User-agent: claudebot
User-agent: cohere-ai
User-agent: diffbot
User-agent: duckassistbot
User-agent: Friendlycrawler
User-agent: omgili
User-agent: omgilibot
User-agent: perplexity-user
User-agent: perplexitybot
User-agent: scrapy
User-agent: timpibot
User-agent: youbot
User-agent: webzio-extended
User-agent: kangaroo-bot
Disallow: /
User-agent: AmazonAdBot
Allow: /
User-agent: *
Disallow: /business/press-releases/
Disallow: /style/beauty/hearstmagazines/
Disallow: /style/fashion/hearstmagazines/
Disallow: /living/relationships/hearstmagazines/
Disallow: /homeandgarden/home/hearstmagazines/
Disallow: /living/wellness/hearstmagazines/
Disallow: /movies/templates/listings
Disallow: /food/dbapps/restaurants
Disallow: /sso/action/logout
Disallow: /general/dbapps/404
Disallow: /coupons/visit
Disallow: /search
Disallow: /413gkwMT/
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 — 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
ADNS Records4 A records, 835 ms lookupPASS
| A | 34.235.224.231, 34.204.119.243, 34.198.86.45, 34.197.233.251 |
| AAAA | — |
| CNAME | — |
| NS | ns2.hearstnp.com, ns6.hearstnp.com, ns1.hearstnp.com, ns3.hearstnp.com, ns5.hearstnp.com, ns4.hearstnp.com |
| MX | 10 sfgate-com.mail.protection.outlook.com |
| TXT | google-site-verification=1m5nOKgH4m5Nr2d1puoZgEp6cXnnKahXaLGLJwAwTA0 google-site-verification=Jcpz_cHqgnfl6x94Lm_joJ9J5q6EqkiMDffkIZMbrlI google-site-verification=K8tV1DbrPFdrO7ZPariBk0n-raEK-2whiujM2STd5rU google-site-verification=9BCpCvbmNpBr1tKyNPPpDYON0uX28sqBX2Y93f3PTDY atlassian-domain-verification=FpL/aWW65m3p2lAjgu9uaxMnORyl2KLKjkSbpFUulvCwkkhAoy... google-site-verification=3fMDP6-72ihF6y45oawiomCNZWKeQo36ocuXIvH2FSE google-site-verification=UMxOQT0gt8TERCOyRWSPP80_vMGW40-meE0Jfr8BpZM google-site-verification=cRfr3E17Tp0pgpjtWiPX1MjKaT0FqSlJRIMKM4tx-CY google-site-verification=xE9mZkrxGdPtiY0MvoyWLhKLP4_4KqMvAvVdOPj9HGE google-site-verification=L7_nw8jNjw9qsiKf7VJo9OuzFdhTZfYNibY0d3xxun8 680c5ce09e3441c69047611efe4faeb7 SPF v=spf1 ip4:98.129.228.67 ip4:34.239.169.101 include:spf.protection.outlook.com i... openai-domain-verification=dv-W45nYtCHsBlkQWvpBLfy9OiI google-site-verification=xzugS3_GIqJIfzZ1bnQ05Rj8KqdcL57WvR_5qMgI1P4 anthropic-domain-verification-qjbz25=PFuJW5qjxIuYPpxotDHWZ6Bhq google-site-verification=w7_0lPEuKP1XgagexUQY1nv5W1r-WDz7Fza0qG_8Kfo facebook-domain-verification=faosxzy5p51wicr5ie59vp2oqhidww google-site-verification=cPLhqvYeHN7wkiLSV6Pjoa_PY6yaKR1fWW6vKPdlrsQ google-site-verification=4BHoHtfYiaiDIinXeTswr4hUe2iRFYNXOHK6rj_faPo FBFlR0fdrg02SII+qegeKCtLvJESGEhjOsY0IJlgbepKR6+ByiyyTqeAXH4CZh/qQfeWnLuDTrJg4l4l... google-site-verification=VLzJOl3igqWf1RlOXE0CY9J8ys4uqD2hJNSFmwEDQ3g tollbit-domain-verification=912537cb66cea7a2430691de74df257bf291fb9fb270a9020f16... _globalsign-domain-verification=Iiihy-iv_vLdlIMtHvh-aCdqO2T53oCoknhW44njXn yahoo-verification-key=g+WhEe4N0CrrEDRyZ1wwuE9mLEFvkYz2e0qq3oLPjHc= cursor-domain-verification-pjkxgd=6Bn9y7uJ8Vw692k7Fno6CSwzb google-site-verification=36dbrWLhz5VLUFXySCsb9XVTTydxajQK4WZY7xZTzPg BSI103498586397 facebook-domain-verification=qqynxm212f5lyr5u525q554vlwn7kk adobe-idp-site-verification=3ebb0754e0941b0fd3e9cfe346802f5b6321a2a9bce74d7ffbce... google-site-verification=yAIpULotH9YMiQPmbN4KeEn6F-eJX1wPsJ57vurqOd0 google-site-verification=cVLyuJzCwJrtt7fPi8NMCEUcWPaI720_yjTazOfL7CQ google-site-verification=s4Ck77cuaN02hprkSoPAB4mkVaPHKWHTMDoSQgfGR0A google-site-verification=MhIxpkTaMNCW3TCfkC0j38khn03PtCoswQPB_DcI7qc google-site-verification=gIbCFh-MvYslYYD0cihA67zBu6kynkGrA05QPYqjlsU MS=ms47985603 |
| 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), 365 ms totalPASS
https://sfgate.com
294 ms · HTTP/1.1
https://www.sfgate.com/
71 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://sfgate.com | 301 | 294 ms | HTTP/1.1 | Apache/2.4.58 |
| 2 | https://www.sfgate.com/ | 200 | 71 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
A+Domain Intelligencesfgate.com — via CSC Corporate Domains, Inc., 32 years, 6 months old, hosted on AWSPASS
258 days
March 30, 2027
79 days
Issued by Let's Encrypt
32 years, 6 months
Registered March 29, 1994
Not enabled
Protects against DNS spoofing
AWS
ASN AS14618
34.197.233.251
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