s-engineering.ch - dns.ninja

`s-engineering.ch`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:c6e2^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:54ed^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.84.237^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.198.226^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`katja.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2635^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`katja.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c235^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`katja.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2235^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`katja.ns.cloudflare.com`
		A	108.162.194.53^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`katja.ns.cloudflare.com`
		A	162.159.38.53^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`katja.ns.cloudflare.com`
		A	172.64.34.53^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`katja.ns.cloudflare.com`
NS	`logan.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bc6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`logan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1c6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`logan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21c6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`logan.ns.cloudflare.com`
		A	108.162.193.198^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`logan.ns.cloudflare.com`
		A	172.64.33.198^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`logan.ns.cloudflare.com`
		A	173.245.59.198^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`logan.ns.cloudflare.com`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c0b::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bj-in-f26.1e100.net`
		A	2607:f8b0:4004:c0b::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bj-in-f27.1e100.net`
		A	2607:f8b0:4004:c17::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f27.1e100.net`
		A	2607:f8b0:4004:c19::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bk-in-f27.1e100.net`
		A	142.250.31.26^{🇺🇸 Google142.250.31.0/24}
			PTR	`bj-in-f26.1e100.net`
		A	142.250.31.27^{🇺🇸 Google142.250.31.0/24}
			PTR	`bj-in-f27.1e100.net`
		A	142.251.16.26^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f26.1e100.net`
		A	142.251.16.27^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f27.1e100.net`
		A	142.251.111.27^{🇺🇸 Google142.251.111.0/24}
			PTR	`bk-in-f27.1e100.net`
TXT	`google-site-verification=TSAUit4cluM5iqfWPDZwmLWOM1Ufy3qCrRcuzFCPxT8`
TXT	`hosting-site=skilful-rite-491314-g3`
TXT	`v=spf1 redirect=spf-permissive.mail.hostpoint.ch`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.84.237, 172.67.198.226
		IPv6 hints	2606:4700:3032::ac43:c6e2, 2606:4700:3034::6815:54ed
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=26, name=cloudflare-ech.com
SOA	`katja.ns.cloudflare.com`dns@cloudflare.com serial=2410269346

`ch`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.ch` ⭐
	NS	`b.nic.ch`
	NS	`d.nic.ch`
	NS	`e.nic.ch`
	NS	`f.nic.ch`
	SOA	`a.nic.ch`dns-operation@switch.ch 2026-08-11 #30

WOT: SAFE (61/100)

Subdomains

mail.s-engineering.ch

Same first word

s-engineering.com

s-engineering.ch

s-engineering.ru

Similar names

sign-engineer.com

DNS History

18 records (7 active, 11 former)

○NSdns1.rigilan.ch2015-07-13 → 2017-02-05 · 4 obs

● 2015-07-13 09:22:18
● 2017-02-05 16:52:48
○ 2018-11-28 15:31:22
○ 2026-08-11 13:30:00

○NSdns2.rigilan.ch2015-07-13 → 2017-02-05 · 4 obs

● 2015-07-13 09:22:18
● 2017-02-05 16:52:48
○ 2018-11-28 15:31:22
○ 2026-08-11 13:30:00

○NSdns3.rigilan.ch2015-07-13 → 2017-02-05 · 4 obs

● 2015-07-13 09:22:18
● 2017-02-05 16:52:48
○ 2018-11-28 15:31:22
○ 2026-08-11 13:30:00

●NSkatja.ns.cloudflare.com2026-04-14 → 2026-08-11 · 3 obs

○ 2026-03-24 08:01:02
● 2026-04-14 09:05:14
● 2026-08-11 13:30:00

●NSlogan.ns.cloudflare.com2026-04-14 → 2026-08-11 · 3 obs

○ 2026-03-24 08:01:02
● 2026-04-14 09:05:14
● 2026-08-11 13:30:00

○NSns.hostpoint.ch2026-03-23 → 2026-03-24 · 5 obs

○ 2018-11-28 15:31:22
● 2026-03-23 16:47:24
● 2026-03-24 08:01:02
○ 2026-04-14 09:05:14
○ 2026-08-11 13:30:00

○NSns2.hostpoint.ch2026-03-23 → 2026-03-24 · 5 obs

○ 2018-11-28 15:31:22
● 2026-03-23 16:47:24
● 2026-03-24 08:01:02
○ 2026-04-14 09:05:14
○ 2026-08-11 13:30:00

○NSns3.hostpoint.ch2026-03-23 → 2026-03-24 · 5 obs

○ 2018-11-28 15:31:22
● 2026-03-23 16:47:24
● 2026-03-24 08:01:02
○ 2026-04-14 09:05:14
○ 2026-08-11 13:30:00

○MXmail.s-engineering.ch2015-07-13 → 2017-02-05 · 4 obs

● 2015-07-13 09:22:18
● 2017-02-05 16:52:48
○ 2018-11-28 15:31:22
○ 2026-08-11 13:30:00

●MXsmtp.google.com2026-03-23 → 2026-08-11 · 3 obs

○ 2018-11-28 15:31:22
● 2026-03-23 16:47:24
● 2026-08-11 13:30:00

●A104.21.84.2372026-04-14 → 2026-08-11 · 3 obs

○ 2026-03-24 08:01:02
● 2026-04-14 09:05:14
● 2026-08-11 13:30:00

●A172.67.198.2262026-04-14 → 2026-08-11 · 3 obs

○ 2026-03-24 08:01:02
● 2026-04-14 09:05:14
● 2026-08-11 13:30:00

○A217.26.63.202026-03-23 → 2026-03-24 · 4 obs

● 2026-03-23 16:47:24
● 2026-03-24 08:01:02
○ 2026-04-14 09:05:14
○ 2026-08-11 13:30:00

●A2606:4700:3032::ac43:c6e22026-07-16 → 2026-08-11 · 3 obs

○ 2026-04-14 09:05:14
● 2026-07-16 00:52:26
● 2026-08-11 13:30:00

●A2606:4700:3034::6815:54ed2026-07-16 → 2026-08-11 · 3 obs

○ 2026-04-14 09:05:14
● 2026-07-16 00:52:26
● 2026-08-11 13:30:00

○A2606:4700:3037::6815:54ed2026-04-14 → 2026-04-14 · 4 obs

○ 2026-03-24 08:01:02
● 2026-04-14 09:05:14
○ 2026-07-16 00:52:26
○ 2026-08-11 13:30:00

○A2606:4700:3037::ac43:c6e22026-04-14 → 2026-04-14 · 4 obs

○ 2026-03-24 08:01:02
● 2026-04-14 09:05:14
○ 2026-07-16 00:52:26
○ 2026-08-11 13:30:00

○A2a00:d70:0:a::4002026-03-23 → 2026-03-24 · 4 obs

● 2026-03-23 16:47:24
● 2026-03-24 08:01:02
○ 2026-04-14 09:05:14
○ 2026-08-11 13:30:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	a.nic.ch, b.nic.ch, d.nic.ch, e.nic.ch...	-
s-engineering.ch	logan.ns.cloudflare.com, katja.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.198

NS records: logan.ns.cloudflare.com, katja.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for s-engineering.ch (unsigned zone)

⏱️ Timing

Total: 479ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.198.226, 104.21.84.237`
AAAA	2	`2606:4700:3034::6815:54ed, 2606:4700:3032::ac43:c6e2`
NS	2	`katja.ns.cloudflare.com, logan.ns.cloudflare.com`
MX	1	`SMTP.GOOGLE.COM (pri: 1)`
TXT	3	`google-site-verification=TSAUit4cluM5iqf, hosting-site=skilful-rite-491314-g3...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`katja.ns.cloudflare.com dns.cloudflare.c`

Analysis

Hierarchy

The domain mail.s-engineering.ch falls under the parent s-engineering.ch.

IP Addresses

s-engineering.ch directs to four IP numbers, which are 104.21.84.237, 172.67.198.226, 2606:4700:3032::ac43:c6e2 and 2606:4700:3034::6815:54ed.

livequebec.com, vertexai-claude-35-sonnet.yx135790mg.workers.dev, gamingdepot.com.br and two other host names share IP numbers with s-engineering.ch.

Name Servers

s-engineering.ch uses two name servers for its delegation: katja.ns.cloudflare.com and logan.ns.cloudflare.com.

s-engineering.ch uses the same name servers as several other domains — among them dstat.ink, proxynet.shop, kompaktgarten.de and two more.

At least some of s-engineering.ch's name servers are shared with other domains, for example flamboroughhistory.com, mountvernonroofer.com, usborne.es and two more.

It is common for these name servers to be used in conjunction with the name servers cheryl.ns.cloudflare.com, adaline.ns.cloudflare.com and davina.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

Hostname katja.ns.cloudflare.com directs to 108.162.194.53, 162.159.38.53 and 172.64.34.53 along with 3 other IP addresses.

Hostname logan.ns.cloudflare.com directs to 108.162.193.198, 172.64.33.198 and 173.245.59.198 along with 3 other IP addresses.

Mail Servers

Mail for s-engineering.ch is handled by a single mail server, smtp.google.com.

s-engineering.ch uses an identical mail server configuration to several other domains — among them 378.it, informalice.com, chronavus.com and two more.

s-engineering.ch has at least partial mail server overlap with other domains such as fabianko.com, peculiarppl.com, sbinet.com.tw and two more.

smtp.google.com resolves to 9 IP addresses — 142.250.31.26, 142.250.31.27, 142.251.16.26 and 6 others.