simtek.pt - dns.ninja

`simtek.pt`

DNSSEC	⚠️ Not signed
A	2606:4700:3037::6815:577b^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:8f4c^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.87.123^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.143.76^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`adi.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a38^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adi.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c038^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`adi.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2038^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`adi.ns.cloudflare.com`
		A	108.162.192.56^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adi.ns.cloudflare.com`
		A	172.64.32.56^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adi.ns.cloudflare.com`
		A	173.245.58.56^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adi.ns.cloudflare.com`
NS	`neil.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bd3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`neil.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1d3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`neil.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21d3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`neil.ns.cloudflare.com`
		A	108.162.193.211^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`neil.ns.cloudflare.com`
		A	172.64.33.211^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`neil.ns.cloudflare.com`
		A	173.245.59.211^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`neil.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.87.123, 172.67.143.76
		IPv6 hints	2606:4700:3037::6815:577b, 2606:4700:3037::ac43:8f4c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=4, name=cloudflare-ech.com
SOA	`adi.ns.cloudflare.com`dns@cloudflare.com serial=2406860873

`pt`

	DNSSEC	🔒 Signed (DS record present)
	NS	`curiosity.dns.pt` ⭐
	NS	`a.dns.pt`
	NS	`b.dns.pt`
	NS	`c.dns.pt`
	NS	`d.dns.pt`
	NS	`e.dns.pt`
	NS	`g.dns.pt`
	NS	`h.dns.pt`
	NS	`ns.dns.br` ⚠️ Not in parent delegation
	NS	`ns2.nic.fr` ⚠️ Not in parent delegation
	SOA	`curiosity.dns.pt`request@dns.pt 2026-07-02 #33

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DNS History

12 records (6 active, 6 former)

●NSadi.ns.cloudflare.com2026-02-25 → 2026-07-02 · 3 obs

○ 2017-06-07 09:24:38
● 2026-02-25 10:09:42
● 2026-07-02 16:25:26

●NSneil.ns.cloudflare.com2026-02-25 → 2026-07-02 · 3 obs

○ 2017-06-07 09:24:38
● 2026-02-25 10:09:42
● 2026-07-02 16:25:26

○NSns1.esoterica.com2015-07-14 → 2017-06-07 · 4 obs

● 2015-07-14 04:20:12
● 2017-06-07 09:24:38
○ 2026-02-25 10:09:42
○ 2026-07-02 16:25:26

○NSns2.esoterica.com2015-07-14 → 2017-06-07 · 4 obs

● 2015-07-14 04:20:12
● 2017-06-07 09:24:38
○ 2026-02-25 10:09:42
○ 2026-07-02 16:25:26

○MXmail.simtek.pt2015-07-14 → 2017-06-07 · 4 obs

● 2015-07-14 04:20:12
● 2017-06-07 09:24:38
○ 2026-02-25 10:09:42
○ 2026-07-02 16:25:26

●A104.21.87.1232026-02-25 → 2026-07-02 · 3 obs

○ 2017-06-07 09:24:38
● 2026-02-25 10:09:42
● 2026-07-02 16:25:26

●A172.67.143.762026-02-25 → 2026-07-02 · 3 obs

○ 2017-06-07 09:24:38
● 2026-02-25 10:09:42
● 2026-07-02 16:25:26

○A2606:4700:3033::6815:577b2026-02-25 → 2026-02-25 · 3 obs

○ 2017-06-07 09:24:38
● 2026-02-25 10:09:42
○ 2026-07-02 16:25:26

○A2606:4700:3035::ac43:8f4c2026-02-25 → 2026-02-25 · 3 obs

○ 2017-06-07 09:24:38
● 2026-02-25 10:09:42
○ 2026-07-02 16:25:26

●A2606:4700:3037::6815:577b2026-07-02 → 2026-07-02 · 2 obs

○ 2026-02-25 10:09:42
● 2026-07-02 16:25:26

●A2606:4700:3037::ac43:8f4c2026-07-02 → 2026-07-02 · 2 obs

○ 2026-02-25 10:09:42
● 2026-07-02 16:25:26

○A80.172.241.372015-07-14 → 2017-06-07 · 4 obs

● 2015-07-14 04:20:12
● 2017-06-07 09:24:38
○ 2026-02-25 10:09:42
○ 2026-07-02 16:25:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pt	b.dns.pt, h.dns.pt, a.dns.pt, e.dns.pt...	-
simtek.pt	neil.ns.cloudflare.com, adi.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.211

NS records: neil.ns.cloudflare.com, adi.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for simtek.pt (unsigned zone)

⏱️ Timing

Total: 531ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.87.123, 172.67.143.76`
AAAA	2	`2606:4700:3037::6815:577b, 2606:4700:3037::ac43:8f4c`
NS	2	`adi.ns.cloudflare.com, neil.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`adi.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

simtek.pt directs to four IP numbers, which are 104.21.87.123, 172.67.143.76, 2606:4700:3037::6815:577b and 2606:4700:3037::ac43:8f4c.

sh-unlocking.com, maildr.suhailbahwanautogroup.com, www.tjxingfa.com plus two other host names have IP numbers in common with simtek.pt.

Name Servers

DNS delegation for simtek.pt points to two name servers: adi.ns.cloudflare.com and neil.ns.cloudflare.com.

The name server configuration of simtek.pt is shared with other domains, for instance planet-tirol.com, mitaurored.com, christinasurer.com and two others.

The name servers of simtek.pt overlap at least partially with those of other domains — among them ipujian.com, cnpxsz.com, saintanneshospital.org and two more.

The name servers carl.ns.cloudflare.com, fay.ns.cloudflare.com and elliot.ns.cloudflare.com are commonly seen alongside these name servers.

Hosts with 6 IP addresses each:

adi.ns.cloudflare.com has IP addresses 108.162.192.56, 172.64.32.56 and 173.245.58.56, plus 3 other.

neil.ns.cloudflare.com has IP addresses 108.162.193.211, 172.64.33.211 and 173.245.59.211, plus 3 other.