`sieb.ch`

DNSSEC	⚠️ Not signed
A	80.74.152.50^{🇨🇭 ASN-METANET80.74.144.0/20 METANET AG, Switzerland}
		PTR	`tesla.sui-inter.net`
NS	`ns5.nine.ch` ⭐
		A	2001:67c:2f98:5::5^{🇨🇭 NINE2001:67c:2f98::/48 Nine Internet Solutions AG, Switzerland}
			PTR	`ns5.nine.ch`
		A	193.17.85.122^{🇨🇭 NINE193.17.85.0/24 Nine Internet Solutions AG, Switzerland}
			PTR	`ns5.nine.ch`
NS	`ns6.nine.ch`
		A	2a02:418:400b:1::6^{🇨🇭 NINE2a02:418::/29 Nine Internet Solutions AG, Switzerland}
			PTR	`ns6.nine.ch`
		A	5.148.164.36^{🇨🇭 NINE5.148.160.0/19 Nine Internet Solutions AG, Switzerland}
			PTR	`ns6.nine.ch`
MX	`sieb-ch.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca3c::^{🇨🇭 Microsoft2a01:111:f000::/36}
			PTR	`mail-zrap278cu00300.inbound.protection.outlook.com`
		A	2a01:111:f403:ca3c::1^{🇨🇭 Microsoft2a01:111:f000::/36}
			PTR	`mail-zrzp278cu00201.inbound.protection.outlook.com`
		A	2a01:111:f403:ca3c::2^{🇨🇭 Microsoft2a01:111:f000::/36}
			PTR	`mail-zr1p278cu00202.inbound.protection.outlook.com`
		A	2a01:111:f403:ca3e::1^{🇨🇭 Microsoft2a01:111:f000::/36}
			PTR	`mail-gvap278cu00301.inbound.protection.outlook.com`
		A	52.101.185.12^{🇨🇭 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-zrap278cu00304.inbound.protection.outlook.com`
		A	52.101.185.13^{🇨🇭 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-zrzp278cu00205.inbound.protection.outlook.com`
		A	52.101.185.14^{🇨🇭 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-zr1p278cu00206.inbound.protection.outlook.com`
		A	52.101.187.1^{🇨🇭 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-gvap278cu00301.inbound.protection.outlook.com`
TXT	`MS=ms75432211`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
SOA	`ns5.nine.ch`nic@nine.ch 2025-01-22 #1

`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 2026-07-18 #38

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DNS History

8 records (4 active, 4 former)

●NSns5.nine.ch2015-05-27 → 2026-07-18 · 2 obs

● 2015-05-27 15:25:02
● 2026-07-18 17:43:26

●NSns6.nine.ch2015-05-27 → 2026-07-18 · 2 obs

● 2015-05-27 15:25:02
● 2026-07-18 17:43:26

○MXmx1.nine.ch2015-05-27 → 2016-12-28 · 4 obs

● 2015-05-27 15:25:02
● 2016-12-28 19:47:12
○ 2026-06-14 19:05:06
○ 2026-07-18 17:43:26

○MXmx2.nine.ch2015-05-27 → 2016-12-28 · 4 obs

● 2015-05-27 15:25:02
● 2016-12-28 19:47:12
○ 2026-06-14 19:05:06
○ 2026-07-18 17:43:26

●MXsieb-ch.mail.protection.outlook.com2026-06-14 → 2026-07-18 · 3 obs

○ 2016-12-28 19:47:12
● 2026-06-14 19:05:06
● 2026-07-18 17:43:26

○A217.150.244.562015-05-27 → 2015-12-21 · 4 obs

● 2015-05-27 15:25:02
● 2015-12-21 17:40:54
○ 2016-06-23 05:38:54
○ 2026-07-18 17:43:26

○A217.150.252.622016-06-23 → 2016-12-28 · 5 obs

○ 2015-12-21 17:40:54
● 2016-06-23 05:38:54
● 2016-12-28 19:47:12
○ 2026-06-14 19:05:06
○ 2026-07-18 17:43:26

●A80.74.152.502026-06-14 → 2026-07-18 · 3 obs

○ 2016-12-28 19:47:12
● 2026-06-14 19:05:06
● 2026-07-18 17:43:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	a.nic.ch, b.nic.ch, d.nic.ch, e.nic.ch...	-
sieb.ch	ns6.nine.ch, ns5.nine.ch	-

✅ Authoritative Response

Server:5.148.164.36

NS records: ns6.nine.ch, ns5.nine.ch

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sieb.ch (unsigned zone)

⏱️ Timing

Total: 1091ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`80.74.152.50`
NS	2	`ns5.nine.ch, ns6.nine.ch`
MX	1	`sieb-ch.mail.protection.outlook.com (pri`
TXT	2	`MS=ms75432211, v=spf1 include:spf.protection.outlook.co`
SOA	1	`ns5.nine.ch nic.nine.ch`

Analysis

IP Addresses

sieb.ch resolves to one IP address: 80.74.152.50.

ns1.vyv.ch, zergroup.com, foul.ch and two other host names share IP numbers with sieb.ch.

Name Servers

The NS records for sieb.ch delegate to ns5.nine.ch and ns6.nine.ch.

sieb.ch uses the same name servers as several other domains — among them biodiversity2010.ch, barristers.ch, tckoeniz.ch and two more.

sieb.ch partially shares its NS delegation with several other domains, including bni-schweiz.ch, kmu-office.ch, umsatzkurbel.de and two others.

These name servers often co-occur with the name servers ns7.nine.ch.

ns5.nine.ch resolves to 193.17.85.122 and 2001:67c:2f98:5::5. Likewise, ns6.nine.ch resolves to 5.148.164.36 and 2a02:418:400b:1::6 — two IP addresses apiece.

Mail Servers

Mail for sieb.ch is handled by a single mail server, sieb-ch.mail.protection.outlook.com.

sieb-ch.mail.protection.outlook.com resolves to 8 IP addresses — 52.101.185.12, 52.101.185.13, 52.101.185.14 and 5 others.

sieb.ch - robtex.com

sieb.ch

ch