Skip to content
https://avira.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
86
GRADE
B
FIX
1
REVIEW
3
PASS
5
INFO
0
Probed from New York, United Stated
301 Moved Permanently
Checks
9
5 PASS 3 REVIEW 1 FIX
D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected

Consider using a CDN to improve global delivery speed and reduce origin load.

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.avira.com/
200https://avira.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://avira.com/ → https://avira.com/

Consistent

B
TLS Certificate Expiry & Recommendations
33 days until leaf cert expires — 5 issues to address
REVIEW

Certificate validity

33
days left
0d 30d 60d 90d+

Recommended actions

  • Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
  • Add includeSubDomains to the HSTS directive
  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • 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 Records
1 A records, 13 ms lookup
PASS
1 A records, 13 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 52.58.28.12
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: edns109.ultradns.biz, edns109.ultradns.com, edns109.ultradns.net, edns109.ultradns.org
Info::
1 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: 13 ms
Got: 13 ms
A52.58.28.12
AAAA—
CNAME—
NSedns109.ultradns.biz, edns109.ultradns.com, edns109.ultradns.net, edns109.ultradns.org
MX
0 avira-com.mail.protection.outlook.com
TXT
MS=ms48453355
52g29bnsh7jc4qbkt0c3t969yrdtxm1d
_gw4btl8706rjzml91930th0oauh9bsd
_v0etryxvdbwvesnsafanzl50dl24plt
_wpjcylgb15szm2f7g54nwdx05inn3fy
rgpfxnqzcfwst5y73q422tc94gd95y3g
dropbox-domain-verification=8t403ze095xv
dropbox-domain-verification=suju11ekp76q
bugcrowd-verification=7bb75ae28a3f7df959f7f3a740e0d8b6
adobe-sign-verification=77f2a6247f58a63b1e609b9ba2a587d
mixpanel-domain-verify=3b7dd851-e7b8-4cab-bbfb-9d54caafcd8f
spycloud-domain-verification=923760f7-6ff2-4184-a6e6-0eb0caf99f32
google-site-verification=-2bninT4J2Z6p1ufth1Y9ND7iO2PViBMqVr0-IG0xuk
google-site-verification=9dAIQ0zDED9NczIU_3q55o-yQNEGMOu9KuyBY9XFlR4
google-site-verification=GBLSqKJ-UIk6ar_dlfSyVBrvHLNo1KRhaIHcc4VM3h0
google-site-verification=HjrqFuigIDnoTgrt9TrQBXcmCHIF6ohP2mTvQCHgfcQ
google-site-verification=LZnFMZXxMPJ2SdeyWtnSG9wZQ7EAWmEts57GFzvpcdY
google-site-verification=SiLAoYmQTaaBBgwqKRkBGZwC3mvPacyIFWT95o6Ydv4
google-site-verification=glYxhwzwguuIgzYjk7-W5-xC--OoQRajleFgm1ZJny8
google-site-verification=poH2o8VXxl0-px7Ysv6CMkL-hZHK9EFZuB9ISuDPpjg
0+bGr/jhgbrPrDLFQn/fTVTtrhOEXAJsRacDvvkH4tm+URAv2ESATMNhA6uszF1I4SHx+tdQBupePGUF...
atlassian-domain-verification=/HWfB70u2BCI5tlCrBw7XK2EDdzHBrrc9r5Vahdzh/x8PlBzWC...
SPF v=spf1 include:_spf.avira.com include:spf.protection.outlook.com include:email.p...
CAALookup not available with standard resolver
Resolved in 13 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
Redirect Chain
1 redirect(s), 575 ms total
PASS
1 redirect(s), 575 ms total
Info::
Single redirect
Got: https://avira.com → https://www.avira.com/ (301)
Info::
WWW normalization redirect
Info::
Redirect overhead: 575 ms total
Got: 575 ms

https://avira.com

260 ms · HTTP/1.1

301

https://www.avira.com/

315 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://avira.com301260 msHTTP/1.1nginx
2https://www.avira.com/200315 msHTTP/1.1akamai

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 12 URLs
PASS
robots.txt present, sitemap with 12 URLs
Info::
robots.txt is present
Got: 1867 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 12 entries
Info::
Sitemap index with 12 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 1867 B Sitemaps referenced 19 User-agents PerplexityBot, Claude-User, ClaudeBot, *, OAI-SearchBot, ChatGPT-User, GPTBot, Perplexity-User Blocking No — crawling allowed
User-agent: *
Disallow: /*/support-threats-statistics/
Disallow: /*/support-threats-summary/*
Disallow: /*/support-virus-lab?page*
Disallow: /*/support-virus-lab?first*
Disallow: /threats/virusInfoTh/track/
Disallow: /recommend/form/
Disallow: /*/search/q/
Disallow: /search/frontendSc/
Disallow: /*?
Disallow: /*?*&*

Disallow: /*/wp-admin
Disallow: /*.rss$
Disallow: */rss/
Disallow: /zh-cn/news.xml$
Disallow: /*/blog/canvas-fingerprinting/amp
Disallow: /blog/wp-content/themes/avira-blog$
Disallow: /blog/wp-content/themes/avira-blog/fonts/KievitWeb/KievitWebPro-Light.woff$
Disallow: /blog/wp-content/themes/avira-blog/fonts/KievitWeb/KievitWebPro-Regular.woff$

Allow: /

Sitemap: https://www.avira.com/sitemap.xml
Sitemap: https://www.avira.com/en/sitemap.xml
Sitemap: https://www.avira.com/de/sitemap.xml
Sitemap: https://www.avira.com/fr/sitemap.xml
Sitemap: https://www.avira.com/es/sitemap.xml
Sitemap: https://www.avira.com/it/sitemap.xml
Sitemap: https://www.avira.com/pt-br/sitemap.xml
Sitemap: https://www.avira.com/ru/sitemap.xml
Sitemap: https://www.avira.com/nl/sitemap.xml
Sitemap: https://www.avira.com/tr/sitemap.xml
Sitemap: https://www.avira.com/ja/sitemap.xml
Sitemap: https://www.avira.com/zh-cn/sitemap.xml
Sitemap: https://www.avira.com/zh-tw/sitemap.xml
Sitemap: https://www.avira.com/en/blog/sitemap_index.xml
Sitemap: https://www.avira.com/de/blog/sitemap_index.xml
Sitemap: https://www.avira.com/fr/blog/sitemap_index.xml
Sitemap: https://www.avira.com/es/blog/sitemap_index.xml
Sitemap: https://www.avira.com/it/blog/sitemap_index.xml
Sitemap: https://www.avira.com/pt-br/blog/sitemap_index.xml


User-agent: OAI-SearchBot
Allow: /

User-agent: ChatGPT-User
Allow: /

User-agent: GPTBot
Allow: /

User-agent: Perplexity-User
Allow: /

User-agent: PerplexityBot
Allow: /

User-agent: Claude-User
Allow: /

User-agent: ClaudeBot
Allow: /
sitemap.xml 200 OK
Type Sitemap Index URLs 12 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
avira.com — via MarkMonitor Inc., 25 years, 5 months old, hosted on AWS
PASS
avira.com — via MarkMonitor Inc., 25 years, 5 months old, hosted on AWS
Info::
Domain registered until Oct 10, 2026 (5 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: AWS
Got: AS16509
Domain expiry

117 days

October 10, 2026

SSL certificate

33 days

Issued by Let's Encrypt

Domain age

25 years, 5 months

Registered March 5, 2001

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

AWS

ASN AS16509

52.58.28.12

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 March 5, 2001 (25 years, 5 months ago)
Expires October 10, 2026 (5 months)
Last Updated April 12, 2023
Name Servers edns109.ultradns.biz, edns109.ultradns.com, edns109.ultradns.net, edns109.ultradns.org
DNSSEC Not enabled
Hosting
IP Address 52.58.28.12
ASN AS16509 (AMAZON-02 - Amazon.com, Inc., US)
Provider AWS
Data source: rdap (0.1s)

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 261 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
4 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
84 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
89 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
262 ms
Total Time Total request time from DNS lookup through full response.
262 ms

Connection waterfall

DNS Lookup 4 ms TCP Connect 84 ms TLS Handshake 89 ms Server Processing 85 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.

Send Feedback