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https://pubmatic.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
100
GRADE
A+
FIX
0
REVIEW
1
PASS
8
INFO
0
Probed from Madrid, Spain
200 OK
Checks
9
8 PASS 1 REVIEW
B
TLS Certificate Expiry & Recommendations
219 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

219
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 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
4 A records, 28 ms lookup
PASS
4 A records, 28 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 18.239.50.73, 18.239.50.101, 18.239.50.112, 18.239.50.18
Info::
Has 8 IPv6 (AAAA) record(s)
Got: 2600:9000:2035:4800:1a:89bc:d200:93a1, 2600:9000:2035:f600:1a:89bc:d200:93a1, 2600:9000:2035:f200:1a:89bc:d200:93a1, 2600:9000:2035:8600:1a:89bc:d200:93a1, 2600:9000:2035:5800:1a:89bc:d200:93a1, 2600:9000:2035:e00:1a:89bc:d200:93a1, 2600:9000:2035:800:1a:89bc:d200:93a1, 2600:9000:2035:5a00:1a:89bc:d200:93a1
Info::
4 nameserver(s) configured
Got: dns1.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net, dns2.p01.nsone.net
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: 28 ms
Got: 28 ms
A18.239.50.73, 18.239.50.101, 18.239.50.112, 18.239.50.18
AAAA2600:9000:2035:4800:1a:89bc:d200:93a1, 2600:9000:2035:f600:1a:89bc:d200:93a1, 2600:9000:2035:f200:1a:89bc:d200:93a1, 2600:9000:2035:8600:1a:89bc:d200:93a1, 2600:9000:2035:5800:1a:89bc:d200:93a1, 2600:9000:2035:e00:1a:89bc:d200:93a1, 2600:9000:2035:800:1a:89bc:d200:93a1, 2600:9000:2035:5a00:1a:89bc:d200:93a1
CNAME—
NSdns1.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net, dns2.p01.nsone.net
MX
10 pubmatic-com.mail.protection.outlook.com
TXT
cloudflare-verify.pubmatic.com=251111832-549189046
dlr5eopv1stdhivt0a25juv948
google-site-verification=4x3AESePyWUn3Fyfirac5BT57SUokyyYZhdZ331OmpQ
SPF v=spf1 ip4:18.200.1.103 ip4:52.8.26.248 ip4:162.248.17.59 ip4:74.199.212.72 incl...
zoom=9694355ca3-06b3a0af34c24f35b9d6441fb0ee7b0e
hes=7e94a34b26db97ef237e11205058c0fb
google-site-verification=Jn4Jtz0fCWQxljwA2-D15cbK1zLSMuLFANANTeAu4UM
pardot_214271_*=d91debdeb5dc3f241f55d67d2d6396d8f7f8f6a1791396b9e1f64f56df382f32
notion-domain-verification=19jpcRd8mRVJtv6Hn97ddyBJ5GBR2SPJbT7ti3W5wvk
cursor-domain-verification-ch2q0f=5DZkmX5DbpYp7YqaEeojXLqGx
anthropic-domain-verification-6tq69t=QONTNTkr56i3Ju2XiibqWyQOd
google-site-verification=D6vg1pORp0ZtyaeGqXbiAcjDS7_flAW30VL0iClCmgE
MS=ms97294344
CAALookup not available with standard resolver
Resolved in 28 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
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://pubmatic.com

https://pubmatic.com

100 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://pubmatic.com200100 msHTTP/1.1Caddy
A+
IPv6 Readiness
IPv6 reachable (16 ms)
PASS
IPv6 reachable (16 ms)
Info::
IPv6 is configured and reachable at 2600:9000:2035:4800:1a:89bc:d200:93a1, 2600:9000:2035:f600:1a:89bc:d200:93a1, 2600:9000:2035:f200:1a:89bc:d200:93a1, 2600:9000:2035:8600:1a:89bc:d200:93a1, 2600:9000:2035:5800:1a:89bc:d200:93a1, 2600:9000:2035:e00:1a:89bc:d200:93a1, 2600:9000:2035:800:1a:89bc:d200:93a1, 2600:9000:2035:5a00:1a:89bc:d200:93a1
Got: 16 ms connect
IPv6 Ready
AAAA Records 2600:9000:2035:4800:1a:89bc:d200:93a1, 2600:9000:2035:f600:1a:89bc:d200:93a1, 2600:9000:2035:f200:1a:89bc:d200:93a1, 2600:9000:2035:8600:1a:89bc:d200:93a1, 2600:9000:2035:5800:1a:89bc:d200:93a1, 2600:9000:2035:e00:1a:89bc:d200:93a1, 2600:9000:2035:800:1a:89bc:d200:93a1, 2600:9000:2035:5a00:1a:89bc:d200:93a1 Connection Reachable (16 ms)
A+
Crawlability
robots.txt present, sitemap with 27 URLs
PASS
robots.txt present, sitemap with 27 URLs
Info::
robots.txt is present
Got: 113 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 27 entries
Info::
Sitemap index with 27 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 113 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-agent: *
Disallow: /wp-admin/
Allow: /wp-admin/admin-ajax.php

Sitemap: https://pubmatic.com/wp-sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 27 entries Valid XML Yes
Child Sitemaps:
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: non-www)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

301https://www.pubmatic.com/
200https://pubmatic.com/

Preferred variant: non-www

HTTP → HTTPS

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

Consistent

A+
Domain Intelligence
pubmatic.com — via GoDaddy.com, LLC, 19 years, 6 months old
PASS
pubmatic.com — via GoDaddy.com, LLC, 19 years, 6 months old
Info::
Domain registered until Sep 8, 2034 (8 years, 6 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: GoDaddy.com, LLC
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.
Domain expiry

2979 days

September 8, 2034

SSL certificate

219 days

Issued by Amazon

Domain age

19 years, 6 months

Registered December 29, 2006

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2600:9000:20ab:7c00:1a:89bc:d200:93a1

Registrar

GoDaddy.com, LLC

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 GoDaddy.com, LLC
Created December 29, 2006 (19 years, 6 months ago)
Expires September 8, 2034 (8 years, 6 months)
Last Updated July 11, 2025
Name Servers dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net
DNSSEC Not enabled
Hosting
IP Address 2600:9000:20ab:7c00:1a:89bc:d200:93a1
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 182 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
28 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
30 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
33 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
126 ms
Total Time Total request time from DNS lookup through full response.
182 ms

Connection waterfall

DNS Lookup 28 ms TCP Connect 30 ms TLS Handshake 33 ms Server Processing 35 ms Content Transfer 57 ms
A+
CDN & Delivery
AWS CloudFront (Hit from cloudfront)
PASS
AWS CloudFront (Hit from cloudfront)
Info::
Site is served via AWS CloudFront CDN (edge: AMS58-P3)
Got: x-amz-cf-id: bc6jw2q_uUfZ4jMnZwvxoEFKCkv8XgVFdC2tamINV-poCREZmfa_vg==
Info::
CDN cache status: Hit from cloudfront
CDN Detected: AWS CloudFront
Provider AWS CloudFront Cache Status Hit from cloudfront Evidence x-amz-cf-id: bc6jw2q_uUfZ4jMnZwvxoEFKCkv8XgVFdC2tamINV-poCREZmfa_vg==
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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