`sda-informatik.ch`

DNSSEC	⚠️ Not signed
NS	`ns1.keystone-sda.ch` ⭐
		A	185.176.236.43^{🇨🇭 SWISSCOM185.176.236.0/22 Keystone-SDA-ATS AG, Switzerland}
			PTR	`ns1.keystone-sda.ch`
NS	`ns2.keystone-sda.ch`
		A	185.176.236.44^{🇨🇭 SWISSCOM185.176.236.0/22 Keystone-SDA-ATS AG, Switzerland}
			PTR	`ns2.keystone-sda.ch`
MX	`mail1.sda-informatik.ch` ⭐
		A	91.220.99.52^{🇨🇭 SWISSCOM91.220.99.0/24 Keystone-SDA-ATS AG, Switzerland}
			PTR	`mail1.keystone-sda.ch`
MX	`mail2.sda-informatik.ch` ⭐
		A	91.220.99.53^{🇨🇭 SWISSCOM91.220.99.0/24 Keystone-SDA-ATS AG, Switzerland}
			PTR	`mail2.keystone-sda.ch`
SOA	`ns1.keystone-sda.ch`hostmaster@keystone-sda.ch 2025-12-08 #0

`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 2026-04-25 #12

Subdomains

mail2.sda-informatik.ch

mail1.sda-informatik.ch

gw10.sda-informatik.ch

Same first word

sda-informatik.ch

DNS History

8 records (4 active, 4 former)

●NSns1.keystone-sda.ch2026-02-15 → 2026-04-25 · 3 obs

○ 2018-01-25 11:59:20
● 2026-02-15 12:09:38
● 2026-04-25 04:31:50

●NSns2.keystone-sda.ch2026-02-15 → 2026-04-25 · 3 obs

○ 2018-01-25 11:59:20
● 2026-02-15 12:09:38
● 2026-04-25 04:31:50

○NSnsa1.nts.ch2015-08-15 → 2018-01-25 · 4 obs

● 2015-08-15 11:48:32
● 2018-01-25 11:59:20
○ 2026-02-15 12:09:38
○ 2026-04-25 04:31:50

○NSnsa2.nts.ch2015-08-15 → 2018-01-25 · 4 obs

● 2015-08-15 11:48:32
● 2018-01-25 11:59:20
○ 2026-02-15 12:09:38
○ 2026-04-25 04:31:50

●MXmail1.sda-informatik.ch2026-02-15 → 2026-04-25 · 3 obs

○ 2018-01-25 11:59:20
● 2026-02-15 12:09:38
● 2026-04-25 04:31:50

●MXmail2.sda-informatik.ch2026-02-15 → 2026-04-25 · 3 obs

○ 2018-01-25 11:59:20
● 2026-02-15 12:09:38
● 2026-04-25 04:31:50

○MXmxgw3.apanet.at2015-08-15 → 2018-01-25 · 4 obs

● 2015-08-15 11:48:32
● 2018-01-25 11:59:20
○ 2026-02-15 12:09:38
○ 2026-04-25 04:31:50

○A91.220.99.412015-08-15 → 2015-12-14 · 4 obs

● 2015-08-15 11:48:32
● 2015-12-14 06:28:14
○ 2016-03-12 03:25:04
○ 2026-04-25 04:31:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	a.nic.ch, b.nic.ch, d.nic.ch, e.nic.ch...	-
sda-informatik.ch	ns1.keystone-sda.ch, ns2.keystone-sda.ch	2 records

✅ Authoritative Response

Server:185.176.236.44

NS records: ns1.keystone-sda.ch, ns2.keystone-sda.ch

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sda-informatik.ch (unsigned zone)

⏱️ Timing

Total: 600ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns1.keystone-sda.ch, ns2.keystone-sda.ch`
MX	2	`mail1.sda-informatik.ch (pri: 10), mail2.sda-informatik.ch (pri: 10)`
SOA	1	`ns1.keystone-sda.ch hostmaster.keystone-`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns2.keystone-sda.ch, ns1.keystone-sda.ch)

Analysis

Hierarchy

sda-informatik.ch is a parent of mail2.sda-informatik.ch, mail1.sda-informatik.ch and gw10.sda-informatik.ch.

Name Servers

sda-informatik.ch is delegated to two name servers: ns1.keystone-sda.ch and ns2.keystone-sda.ch.

sda-informatik.ch uses the same name server setup as other domains, including keystone.pictures, keystone.agency, sitermine.ch, keystone.media and keystone.graphics.

Hostnames with a single IP

ns1.keystone-sda.ch resolves to: 185.176.236.43.

ns2.keystone-sda.ch resolves to: 185.176.236.44.

Mail Servers

sda-informatik.ch is handled by two mail servers: mail1.sda-informatik.ch and mail2.sda-informatik.ch.

Hostnames with a single IP

mail1.sda-informatik.ch resolves to: 91.220.99.52.

mail2.sda-informatik.ch resolves to: 91.220.99.53.

sda-informatik.ch - robtex.com