`istag.ch`

DNSSEC	⚠️ Not signed
A	212.40.5.42^{🇨🇭 VTX-NETWORK212.40.0.0/19 CH.VTX LIR Range}
		PTR	`mydomain4.datacomm.ch`
NS	`ns01.vtx.ch` ⭐
		A	212.147.10.15^{🇨🇭 VTX-NETWORK212.147.0.0/17 CH.VTX LIR Range}
			PTR	`ns01.vtx.ch`
NS	`ns02.vtx.ch`
		A	212.147.10.161^{🇨🇭 VTX-NETWORK212.147.0.0/17 CH.VTX LIR Range}
			PTR	`ns02.vtx.ch`
MX	`mx2.vtx.ch` ⭐
		A	194.38.175.33^{🇨🇭 VTX-NETWORK194.38.160.0/19 DECKPOINT-CH}
			PTR	`mx2.vtx.ch`
TXT	`v=spf1 a mx include:spf.vtx.ch ~all`
SOA	`ns01.vtx.ch`dnsmaster@vtx.ch 2022-10-03 #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 2026-04-24 #5

WOT: SAFE (61/100)

Same first word

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DNS History

4 records (4 active, 0 former)

●NSns01.vtx.ch2015-07-23 → 2026-04-24 · 2 obs

● 2015-07-23 10:53:50
● 2026-04-24 01:26:18

●NSns02.vtx.ch2015-07-23 → 2026-04-24 · 2 obs

● 2015-07-23 10:53:50
● 2026-04-24 01:26:18

●MXmx2.vtx.ch2015-07-23 → 2026-04-24 · 5 obs

● 2015-07-23 10:53:50
● 2026-04-09 13:48:46
○ 2026-04-21 07:15:40
● 2026-04-24 01:26:16
● 2026-04-24 01:26:18

●A212.40.5.422015-07-23 → 2026-04-24 · 5 obs

● 2015-07-23 10:53:50
● 2026-04-09 13:48:46
○ 2026-04-21 07:15:40
● 2026-04-24 01:26:16
● 2026-04-24 01:26:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	a.nic.ch, b.nic.ch, d.nic.ch, e.nic.ch...	-
istag.ch	ns01.vtx.ch, ns02.vtx.ch	2 records

✅ Authoritative Response

Server:212.147.10.15

NS records: ns01.vtx.ch, ns02.vtx.ch

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for istag.ch (unsigned zone)

⏱️ Timing

Total: 499ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`212.40.5.42`
NS	2	`ns01.vtx.ch, ns02.vtx.ch`
MX	1	`mx2.vtx.ch (pri: 10)`
TXT	1	`v=spf1 a mx include:spf.vtx.ch ~all`
SOA	1	`ns01.vtx.ch dnsmaster.vtx.ch`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns02.vtx.ch, ns01.vtx.ch)

Analysis

IP Addresses

istag.ch points to a single IP number: 212.40.5.42.

Other host names such as guspro.ch and zoi.ch share IP numbers with istag.ch.

Name Servers

Delegation for istag.ch rests with two name servers, ns01.vtx.ch and ns02.vtx.ch.

istag.ch shares the same name server setup as other domains, including desaxo.com, ccpm.ch, mcam.ch, ltdb.ch and actec.ch.

istag.ch partially shares name servers with other domains; for instance ipacs.ch, red-x.net and lcf-rothschild-group.com.

Host names with one IP number: ns01.vtx.ch points to 212.147.10.15; ns02.vtx.ch points to 212.147.10.161.

Mail Servers

istag.ch is handled by a single mail server, mx2.vtx.ch.

istag.ch uses the same mail server configuration as other domains, such as businessclubcvci.ch, cdlco.ch, cosich-avocats.com, telname.ch and travelec.ch.

istag.ch shares mail servers with other domains, at least partially, for instance ehc-uster.ch and bronv.ch.

mx2.vtx.ch points to a single IP: 194.38.175.33.

istag.ch - robtex.com

istag.ch

ch