securityheaders.io - dns.ninja

`securityheaders.io`

DNSSEC	🔒 Signed (DS record present)
A	2606:4700:3033::6815:1532^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:c46b^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.21.50^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.196.107^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`adrian.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a39^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adrian.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c039^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`adrian.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2039^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`adrian.ns.cloudflare.com`
		A	108.162.192.57^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adrian.ns.cloudflare.com`
		A	172.64.32.57^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adrian.ns.cloudflare.com`
		A	173.245.58.57^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adrian.ns.cloudflare.com`
NS	`karl.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bbe^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karl.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1be^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`karl.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21be^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`karl.ns.cloudflare.com`
		A	108.162.193.190^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karl.ns.cloudflare.com`
		A	172.64.33.190^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karl.ns.cloudflare.com`
		A	173.245.59.190^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karl.ns.cloudflare.com`
MX	`in1-smtp.messagingengine.com` ⭐
		A	103.168.172.216^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-01.messagingengine.com`
		A	103.168.172.217^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-02.messagingengine.com`
		A	103.168.172.218^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-03.messagingengine.com`
		A	103.168.172.219^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-04.messagingengine.com`
		A	103.168.172.220^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-05.messagingengine.com`
		A	103.168.172.221^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-06.messagingengine.com`
		A	103.168.172.222^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-07.messagingengine.com`
		A	103.168.172.223^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-08.messagingengine.com`
MX	`in2-smtp.messagingengine.com`⁽²⁰⁾
		A	202.12.124.216^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-01.messagingengine.com`
		A	202.12.124.217^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-02.messagingengine.com`
		A	202.12.124.218^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-03.messagingengine.com`
		A	202.12.124.219^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-04.messagingengine.com`
TXT	`blitz=mu-d15e2e49-bd72d4fd-b5efada7-c5904cb1`
TXT	`google-site-verification=Ope15tGgC-fqidRzJOi3pJfLYAUjg-fC1BzWgKHciJY`
TXT	`keybase-site-verification=36kRxygqDNby_83957VhO1OKAkrU-JQeY1apzZL3HTE`
TXT	`v=spf1 include:spf.messagingengine.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.21.50, 172.67.196.107
		IPv6 hints	2606:4700:3033::6815:1532, 2606:4700:3036::ac43:c46b
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=175, name=cloudflare-ech.com
SOA	`adrian.ns.cloudflare.com`dns@cloudflare.com serial=2408981976

`io`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.nic.io` ⭐
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`
	SOA	`a0.nic.io`hostmaster@donuts.email serial=1784507592

rank #247006 globally
rank #2008 in the tld
WOT: SAFE (91/100)
📈 Tranco rank: #998,910

Same first word

securityheaders.nl

securityheaders.io

securityheaders.com

DNS History

13 records (8 active, 5 former)

●NSadrian.ns.cloudflare.com2026-02-17 → 2026-07-20 · 3 obs

○ 2017-06-13 07:59:52
● 2026-02-17 04:57:14
● 2026-07-20 00:48:14

●NSkarl.ns.cloudflare.com2026-02-17 → 2026-07-20 · 3 obs

○ 2017-06-13 07:59:52
● 2026-02-17 04:57:14
● 2026-07-20 00:48:14

○NSroxy.ns.cloudflare.com2016-12-05 → 2017-06-13 · 4 obs

● 2016-12-05 01:16:42
● 2017-06-13 07:59:52
○ 2026-02-17 04:57:14
○ 2026-07-20 00:48:14

○NSwalt.ns.cloudflare.com2016-12-05 → 2017-06-13 · 4 obs

● 2016-12-05 01:16:42
● 2017-06-13 07:59:52
○ 2026-02-17 04:57:14
○ 2026-07-20 00:48:14

●MXin1-smtp.messagingengine.com2016-12-05 → 2026-07-20 · 2 obs

● 2016-12-05 01:16:42
● 2026-07-20 00:48:14

●MXin2-smtp.messagingengine.com2016-12-05 → 2026-07-20 · 2 obs

● 2016-12-05 01:16:42
● 2026-07-20 00:48:14

●A104.21.21.502026-02-17 → 2026-07-20 · 3 obs

○ 2017-06-13 07:59:52
● 2026-02-17 04:57:14
● 2026-07-20 00:48:14

●A172.67.196.1072026-02-17 → 2026-07-20 · 3 obs

○ 2017-06-13 07:59:52
● 2026-02-17 04:57:14
● 2026-07-20 00:48:14

○A192.241.216.2192016-12-05 → 2017-06-13 · 4 obs

● 2016-12-05 01:16:42
● 2017-06-13 07:59:52
○ 2026-02-17 04:57:14
○ 2026-07-20 00:48:14

○A2604:a880:1:20::7e:30012016-12-05 → 2017-06-13 · 4 obs

● 2016-12-05 01:16:42
● 2017-06-13 07:59:52
○ 2026-02-17 04:57:14
○ 2026-07-20 00:48:14

○A2606:4700:3031::ac43:c46b2026-02-17 → 2026-06-02 · 4 obs

○ 2017-06-13 07:59:52
● 2026-02-17 04:57:14
● 2026-06-02 13:23:54
○ 2026-07-20 00:48:14

●A2606:4700:3033::6815:15322026-02-17 → 2026-07-20 · 3 obs

○ 2017-06-13 07:59:52
● 2026-02-17 04:57:14
● 2026-07-20 00:48:14

●A2606:4700:3036::ac43:c46b2026-07-20 → 2026-07-20 · 2 obs

○ 2026-06-02 13:23:54
● 2026-07-20 00:48:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io	-
securityheaders.io	adrian.ns.cloudflare.com, karl.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.190

NS records: adrian.ns.cloudflare.com, karl.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 438ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.21.50, 172.67.196.107`
AAAA	2	`2606:4700:3036::ac43:c46b, 2606:4700:3033::6815:1532`
NS	2	`adrian.ns.cloudflare.com, karl.ns.cloudflare.com`
MX	2	`in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20)`
TXT	4	`blitz=mu-d15e2e49-bd72d4fd-b5efada7-c590, google-site-verification=Ope15tGgC-fqidR...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`adrian.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

securityheaders.io resolves to four IP addresses: 104.21.21.50, 172.67.196.107, 2606:4700:3033::6815:1532 and 2606:4700:3036::ac43:c46b.

Additional host names — wp-includes.wp2.ns1.webpresenceworld.com, www.afflovest.com, mail.vhsofnj.com and two others — share IP numbers with securityheaders.io.

Name Servers

securityheaders.io is delegated to two name servers: adrian.ns.cloudflare.com and karl.ns.cloudflare.com.

securityheaders.io shares its name server setup with other domains, including fpmmobile.com, rodmans.ru, nfbs.or.id and two others.

securityheaders.io partially shares its NS delegation with several other domains, including goldingmaudeyecare.co.uk, nomnompaleo.com, wiznix.com and two others.

These name servers regularly co-occur with the name servers tim.ns.cloudflare.com, thomas.ns.cloudflare.com and peyton.ns.cloudflare.com.

Host names with 6 IP numbers:

adrian.ns.cloudflare.com resolves to 108.162.192.57, 172.64.32.57, 173.245.58.57 and 3 other IP addresses.

karl.ns.cloudflare.com resolves to 108.162.193.190, 172.64.33.190, 173.245.59.190 and 3 other IP addresses.

Mail Servers

securityheaders.io has two mail servers: in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

securityheaders.io shares the same mail server setup as other domains, including warrentech.net, northall.me.uk, emacsredux.com and two others.

At least a portion of securityheaders.io's mail servers are also used by other domains, for example rockstable.net.

Host names with 8 IP numbers:

in1-smtp.messagingengine.com resolves to 103.168.172.216, 103.168.172.217, 103.168.172.218 and 5 other IP addresses.

Host names resolving to four IP addresses:

in2-smtp.messagingengine.com maps to the following IP addresses: 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.