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https://semrush.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
83
GRADE
B
FIX
0
REVIEW
5
PASS
4
INFO
0
Probed from Singapore, Singapore
301 Moved Permanently
Checks
9
4 PASS 5 REVIEW
B
Redirect Chain
1 redirect(s), 1945 ms total
REVIEW
1 redirect(s), 1945 ms total
Info::
Single redirect
Got: https://semrush.com → https://www.semrush.com/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1945 ms total
Got: 1945 ms

https://semrush.com

865 ms · HTTP/1.1

301

https://www.semrush.com/

1079 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://semrush.com301865 msHTTP/1.1nginx
2https://www.semrush.com/2001079 msHTTP/1.1nginx

See the visual redirect chain in the HTTP Probe tab →

C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

B
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
www/non-www, trailing slash, HTTP→HTTPS
Critical::
Both www and non-www versions serve content
Got: Both variants return 200 Expected: One variant 301-redirects to the other
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.semrush.com/
200https://semrush.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://semrush.com/ → https://www.semrush.com:443/

Consistent

B
TLS Certificate Expiry & Recommendations
72 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

72
days left
0d 30d 60d 90d+

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
B
CDN & Delivery
Google Cloud CDN
REVIEW
Google Cloud CDN
Info::
Site is served via Google Cloud CDN CDN
Got: via: 1.1 google
CDN Detected: Google Cloud CDN
Provider Google Cloud CDN Evidence via: 1.1 google
A+
DNS Records
1 A records, 20 ms lookup
PASS
1 A records, 20 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 34.120.45.191
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
4 nameserver(s) configured
Got: ns-cloud-e4.googledomains.com, ns-cloud-e1.googledomains.com, ns-cloud-e2.googledomains.com, ns-cloud-e3.googledomains.com
Info::
2 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Info::
DNS resolution time: 20 ms
Got: 20 ms
A34.120.45.191
AAAA—
CNAME—
NSns-cloud-e4.googledomains.com, ns-cloud-e1.googledomains.com, ns-cloud-e2.googledomains.com, ns-cloud-e3.googledomains.com
MX
5 usb-smtp-inbound-1.mimecast.com
5 usb-smtp-inbound-2.mimecast.com
TXT
cursor-domain-verification-abbp7s=jqjNVm6cguLFXE4G9hr8Pv3XP
openai-domain-verification=dv-KI6NdhrJwaSBsG2Oy2TM1OQY
facebook-domain-verification=6zt69ggysiztnc3tk714d886fs3t3s
google-site-verification=N92wr1UtG9CBIK7ZKs-RPz5BK6hi5Wnd8IjOAzqy63s
atlassian-domain-verification=HsXqGyMljRsmEH6YwDOlJeL5RynYoGdbTwkU3nPNRxORfQFJxV...
mongodb-site-verification=AvYB5GFdhWjM6oABEmWmeNKnDGdZw0hl
hubspot-developer-verification=NmUwYTUxZmYtMmQzMi00NGNlLTg1NTctZjMxY2M2ZmEyNzBh
google-site-verification=Snl4HtfqFmAGr_Z35GevldSlWXA3Vy_h9Na6zptePlo
google-site-verification=viXQHbFKRnb-gic632XSpRZBGEAZAZaSE_zUUNzWvj4
google-site-verification=L5Z3DA9PoR_MHfOgRzgGg-FT9TPRl5yVDccxyW8Movs
linear-domain-verification=c6vqwj6z5hy2
adobe-idp-site-verification=9e2233e4bee36f8c577772a15f83ea2887da0acd12ee965b777e...
apple-domain-verification=jqXRNmPmTwwTjBYo
tiktok-developers-site-verification=WQYHInE4uDcGcn6oOXBXLDoQkaz9crpN
prowly-verification=7a04bf687fbaa0b022628c145b1a51c1694392949837ac84be1dac8b2a6a...
hubspot-developer-verification=YzQ3ZjUyZGItYWIwNS00Y2IyLTlmYTktYmYyMjY0ZGVlMjg4
MS=0276A76DB2EBFBDF6C3C84B6B7E8F807D50FFBA9
notion-domain-verification=PlfMolzbMlXLbWnfFbddmq4ohGB9km6tE9JhovfXVKf
google-site-verification=U4ufyI8TpcTtcB4dNFojdY1Xc1Hbe5ZS4BzoMu_zXQ0
docker-verification=96c2e5e2-f6cb-4ef3-98b3-3e0c88cfab43
miro-verification=06c0c44b44af219ca7a206d9d8c9729d95a46db8
tiktok-developers-site-verification=OIJeGky90TNaruXxgQFKwOvo93DmOS5z
google-site-verification=Jdyk-VWECYqQ7-puXdoLoGp7U629HhAnurYQcRavu90
MS=ms90185148
amazonses:qOSt0psxaU7JhHFJwm60EGwvr2taIB1swqbz/LDhhMk=
google-site-verification=ZggD_aUD-jtaj118dkluFZgsDIf-_ks6aV8bEI7rOLk
hubspot-developer-verification=YjMzZDE4ODEtMDllMi00ZDEzLWJlMGYtNDU5ZDMyYmUyYWUy
yahoo-verification-key=c6xMbKDeWtbu6HTBBF+hfB0cTdy1k1q0//OrO4IONm0=
google-site-verification=EaFYAaRVwiFSgGCFQ0FlIwlfaz8OJXXvWdDT9u6bbWs
google-site-verification=0fi-TYpzPeD1GbaE-XCVBDHbpfciG903iwRs3QSxwd0
SPF v=spf1 mx include:_spf.google.com include:usb._netblocks.mimecast.com include:sp...
CAALookup not available with standard resolver
Resolved in 20 ms

Multiple A records provide failover if one server goes down.

Why this matters

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.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A+
Crawlability
robots.txt present, sitemap with 22 URLs
PASS
robots.txt present, sitemap with 22 URLs
Info::
robots.txt is present
Got: 3623 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 22 entries
Info::
Sitemap index with 22 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 3623 B Sitemaps referenced 14 User-agents facebookexternalhit, LinkedInBot, Twitterbot, 008, SiteAuditBot, Semrushbot-SI, Yahoo Pipes 2.0, Bingbot, BingPreview, *, Facebot Blocking No — crawling allowed
User-agent: 008
Disallow: /

User-agent: SiteAuditBot
Crawl-delay: 1
Allow: /

User-agent: Semrushbot-SI
Allow: /

User-agent: Yahoo Pipes 2.0
Disallow: /

User-agent: Facebot
Disallow: /archive/graphs.php
Allow: /academy/certificates/*

User-agent: facebookexternalhit
Allow: /academy/certificates/*

User-agent: Bingbot
Disallow: /archive/graphs.php

User-agent: BingPreview
Disallow: /archive/graphs.php

User-agent: LinkedInBot
Allow: /academy/certificates/*

User-agent: Twitterbot
Allow: /blog/*
Allow: /ranking-factors/*
Allow: /academy/certificates/*

User-agent: *
Disallow: /blog/*?img=*
Disallow: /archive/graphs.php
Disallow: /forrester-marketing-silos/*
Disallow: /partner/
Disallow: /blog/search/*
Disallow: /analytics/seomagic/
Disallow: /my_reports/reports/*
Disallow: /archive/
Disallow: /admin/
Disallow: /users/
Disallow: /clients/
Disallow: /custom_report/
Disallow: /limit_hits/
Disallow: /payment/
Disallow: /no_cookies/
Disallow: /double_activation/
Disallow: /projects/?*
Disallow: /?*/
Disallow: /activation_successful*
Disallow: /api.html?*
Disallow: /partners/
Disallow: /partner/
Disallow: */dvd-mode/
Disallow: /unsubscribe/
Disallow: /unsubscribe/*
Disallow: /demonstration/
Disallow: /demonstration/*
Allow: /projects/
Disallow: */custom-report/
Disallow: */request-demo/
Allow: */info/kdt/
Disallow: */pleasereg/
Disallow: */custom-report/
Disallow: */custom-report
Allow: */sensor/*
Disallow: /swa/api/*
Disallow: /redirect?url=*
Disallow: /sso/
Disallow: /_/report_blank/
Disallow: /_/toolkit_blank/
Disallow: /_/site_info_blank/
Disallow: /seo-old/*
Disallow: /projects2/*
Disallow: /free-tools/plagiarism-checker/?q=
Allow: /news/*?page=*

# Community rules
Allow: /blog/*
Disallow: /blog/search/*
Disallow: /blog/*utm_source=*
Disallow: /blog-manager/*
Allow: /user/*

# Features new pages
Disallow: /features/index2/
Disallow: /features/for-*

# Disallow technical signup pages
Allow: /login/$
Allow: /signup/$
Disallow: /login/*
Disallow: /signup/*

# Solutions
Disallow: /solutions/$

# Enterprise
Allow: /enterprise/seo/

#landing
Disallow: /landing/
Disallow: /lp/
Allow: /lp/affiliate-program/*
Allow: /lp/for-agencies/en/
Allow: /lp/enterprise-aio/*
Allow: /lp/enterprise-crawler/*
Allow: /lp/enterprise-partner-program/*
Allow: /lp/seasonal-ai/en/
Allow: /lp/black-friday/*
Disallow: /lp/black-friday-aff/*
Allow: /lp/cyber-week/*
Allow: /lp/insights/*
Allow: /lp/growth-quadrant/
Allow: /lp/mfour/*
Allow: /lp/semrush-circle/*
Allow: /seo/
Allow: /lp/seo-consultation/*
Allow: /content-marketing/
Allow: /ppc/
Allow: /competitive-research/
Allow: /analytics/traffic/overview/
Disallow: /listings-management/superpower-landing2/

#academy
Allow: /academy/*
Disallow: /academy/*utm_source=*
Disallow: /academy/*/results
Disallow: /academy/certificates/*

#websites
Allow: /website/*
Disallow: /website/search/*

Disallow: /*/?*
Crawl-delay: 20

# Sitemap files
#Blog
Sitemap: https://www.semrush.com/sitemap.xml
Sitemap: https://pt.semrush.com/blog/sitemap/
Sitemap: https://es.semrush.com/blog/sitemap/
Sitemap: https://it.semrush.com/blog/sitemap/
Sitemap: https://fr.semrush.com/blog/sitemap/
Sitemap: https://de.semrush.com/blog/sitemap/
Sitemap: https://ja.semrush.com/blog/sitemap/
#Academy
Sitemap: https://www.semrush.com/academy/sitemap.xml
Sitemap: https://es.semrush.com/academy/sitemap.xml
Sitemap: https://pt.semrush.com/academy/sitemap.xml
Sitemap: https://it.semrush.com/academy/sitemap.xml
Sitemap: https://fr.semrush.com/academy/sitemap.xml
Sitemap: https://de.semrush.com/academy/sitemap.xml
#Free tools:
Sitemap: https://www.semrush.com/free-tools/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 22 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
semrush.com — via MarkMonitor Inc., 17 years, 9 months old, hosted on Google Cloud
PASS
semrush.com — via MarkMonitor Inc., 17 years, 9 months old, hosted on Google Cloud
Info::
Domain registered until Oct 3, 2035 (9 years, 7 months remaining)
Info::
DNSSEC is not enabled
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Info::
Registrar: MarkMonitor Inc.
Warning::
Registrar lock is NOT enabled
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.
Info::
Hosting: Google Cloud
Got: AS396982
Domain expiry

3397 days

October 3, 2035

SSL certificate

72 days

Issued by Google Trust Services

Domain age

17 years, 9 months

Registered October 3, 2008

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Google Cloud

ASN AS396982

34.120.45.191

Registrar

MarkMonitor Inc.

Unlocked 4 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar MarkMonitor Inc.
Created October 3, 2008 (17 years, 9 months ago)
Expires October 3, 2035 (9 years, 7 months)
Last Updated January 26, 2026
Name Servers ns-cloud-e1.googledomains.com, ns-cloud-e2.googledomains.com, ns-cloud-e3.googledomains.com, ns-cloud-e4.googledomains.com
DNSSEC Not enabled
Hosting
IP Address 34.120.45.191
ASN AS396982 (GOOGLE-CLOUD-PLATFORM - Google LLC, US)
Provider Google Cloud
Data source: rdap (1.0s)

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Why this matters

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.

Why this matters

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

A+
HTTP Probe Timing
Total 263 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
5 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
2 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
6 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
264 ms
Total Time Total request time from DNS lookup through full response.
264 ms

Connection waterfall

DNS Lookup 5 ms TCP Connect 2 ms TLS Handshake 6 ms Server Processing 251 ms Content Transfer 0 ms
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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