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https://taboola.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
87
GRADE
B
FIX
0
REVIEW
3
PASS
6
INFO
0
Probed from Sao Paulo, Brazil
301 Moved Permanently
Checks
9
6 PASS 3 REVIEW
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.taboola.com/
200https://taboola.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

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

Consistent

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

Certificate validity

264
days left
0d 30d 60d 90d+

Recommended actions

  • Add includeSubDomains to the HSTS directive
  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+
DNS Records
4 A records, 118 ms lookup
PASS
4 A records, 118 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 151.101.2.132, 151.101.66.132, 151.101.130.132, 151.101.194.132
Info::
No IPv6 (AAAA) records
Info::
8 nameserver(s) configured
Got: dns1.p05.nsone.net, dns2.p05.nsone.net, dns3.p05.nsone.net, dns4.p05.nsone.net, ns01.dnsfaster.com, ns02.dnsfaster.com, ns03.dnsfaster.com, ns04.dnsfaster.com
Info::
7 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: 118 ms
Got: 118 ms
A151.101.2.132, 151.101.66.132, 151.101.130.132, 151.101.194.132
AAAA—
CNAME—
NSdns1.p05.nsone.net, dns2.p05.nsone.net, dns3.p05.nsone.net, dns4.p05.nsone.net, ns01.dnsfaster.com, ns02.dnsfaster.com, ns03.dnsfaster.com, ns04.dnsfaster.com
MX
1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 aspmx3.googlemail.com
10 aspmx2.googlemail.com
10 aspmx4.googlemail.com
10 aspmx5.googlemail.com
TXT
c1a74638-2510-480f-ae6e-fa1ecd1f5650
anthropic-domain-verification-1zbekh=lJFJALlYr77IEwETZNf4Bb2Bj
google-site-verification=N60gm5YnA_5ibrU2k9tH-TJqaVwp-P3sB44ZzWbzxAc
google-site-verification=k1dQX_v14MN8Mq34nd3RU2QJx_e7Emv7PeDmP_GPcbE
atlassian-sending-domain-verification=0a85057d-574b-4719-b1e0-2a8933fb47f7
SPF v=spf1 ip4:0.0.0.6 ip4:103.28.42.0/24 ip4:104.130.122.0/23 ip4:104.130.96.0/28 i...
CAALookup not available with standard resolver
Resolved in 118 ms

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), 134 ms total
PASS
1 redirect(s), 134 ms total
Info::
Single redirect
Got: https://taboola.com → https://www.taboola.com/ (301)
Info::
WWW normalization redirect

https://taboola.com

121 ms · HTTP/1.1

301

https://www.taboola.com/

13 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://taboola.com301121 msHTTP/1.1Varnish
2https://www.taboola.com/20013 msHTTP/1.1

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 19 URLs
PASS
robots.txt present, sitemap with 19 URLs
Info::
robots.txt is present
Got: 2350 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 19 entries
Info::
Sitemap index with 19 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 2350 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
Crawl-delay: 10
# CSS, JS, Images
Allow: /misc/*.css$
Allow: /misc/*.css?
Allow: /misc/*.js$
Allow: /misc/*.js?
Allow: /misc/*.gif
Allow: /misc/*.jpg
Allow: /misc/*.jpeg
Allow: /misc/*.png
Allow: /modules/*.css$
Allow: /modules/*.css?
Allow: /modules/*.js$
Allow: /modules/*.js?
Allow: /modules/*.gif
Allow: /modules/*.jpg
Allow: /modules/*.jpeg
Allow: /modules/*.png
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /themes/*.css$
Allow: /themes/*.css?
Allow: /themes/*.js$
Allow: /themes/*.js?
Allow: /themes/*.gif
Allow: /themes/*.jpg
Allow: /themes/*.jpeg
Allow: /themes/*.png
# Directories
Disallow: /includes/
Disallow: /misc/
Disallow: /modules/
Disallow: /profiles/
Disallow: /scripts/
Disallow: /themes/
# Files
Disallow: /CHANGELOG.txt
Disallow: /cron.php
Disallow: /INSTALL.mysql.txt
Disallow: /INSTALL.pgsql.txt
Disallow: /INSTALL.sqlite.txt
Disallow: /install.php
Disallow: /INSTALL.txt
Disallow: /LICENSE.txt
Disallow: /MAINTAINERS.txt
Disallow: /update.php
Disallow: /UPGRADE.txt
Disallow: /xmlrpc.php
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips/
Disallow: /node/add/
Disallow: /search/
Disallow: /test/
Disallow: /user/register/
Disallow: /user/password/
Disallow: /user/login/
Disallow: /user/logout/
# Paths (no clean URLs)
Disallow: /?q=admin/
Disallow: /?q=comment/reply/
Disallow: /?q=filter/tips/
Disallow: /?q=node/add/
Disallow: /?q=search/
Disallow: /?q=user/password/
Disallow: /?q=user/register/
Disallow: /?q=user/login/
Disallow: /?q=user/logout/
Disallow: /atlassian-domain-verification*

# Operad
Disallow: */node/
Disallow: */vef/load/

Sitemap: https://www.taboola.com/sitemap_index.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 19 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
taboola.com — via Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA, 19 years, 5 months old, hosted on Fastly
PASS
taboola.com — via Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA, 19 years, 5 months old, hosted on Fastly
Info::
Domain registered until Feb 23, 2031 (4 years, 11 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA
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: Fastly
Got: AS54113
Domain expiry

1714 days

February 23, 2031

SSL certificate

264 days

Issued by DigiCert Inc

Domain age

19 years, 5 months

Registered February 23, 2007

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Fastly

ASN AS54113

151.101.130.132

Registrar

Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA

Unlocked 8 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA
Created February 23, 2007 (19 years, 5 months ago)
Expires February 23, 2031 (4 years, 11 months)
Last Updated February 9, 2026
Name Servers dns1.p05.nsone.net, dns2.p05.nsone.net, dns3.p05.nsone.net, dns4.p05.nsone.net, ns01.dnsfaster.com, ns02.dnsfaster.com, ns03.dnsfaster.com, ns04.dnsfaster.com
DNSSEC Enabled
Hosting
IP Address 151.101.130.132
ASN AS54113 (FASTLY - Fastly, Inc., US)
Provider Fastly
Data source: rdap (0.7s)

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

Connection waterfall

DNS Lookup 113 ms TCP Connect 1 ms TLS Handshake 7 ms Server Processing 2 ms Content Transfer 0 ms
A+
CDN & Delivery
Fastly (HIT)
PASS
Fastly (HIT)
Info::
Site is served via Fastly CDN
Got: x-served-by: cache-gru-sbgr1930034-GRU
Info::
CDN cache status: HIT
CDN Detected: Fastly
Provider Fastly Cache Status HIT Evidence x-served-by: cache-gru-sbgr1930034-GRU
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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