`proxy.ost.ch`

CNAME	`siproxy11.ost.ch`
DNSSEC	⚠️ Not signed
A	2001:620:1c0:d212:0:2ff:fe12:15^{🇨🇭 Switch2001:620::/32 SWITCH, The Swiss Education & Research Network}
		PTR	`siproxy11.ost.ch`
A	146.136.212.15^{🇨🇭 Switch146.136.0.0/16 NTB-CH}

`ost.ch`

	DNSSEC	⚠️ Not signed
	A	2001:620:1c0:d212:0:2ff:fe12:33^{🇨🇭 Switch2001:620::/32 SWITCH, The Swiss Education & Research Network}
	A	146.136.212.33^{🇨🇭 Switch146.136.0.0/16 NTB-CH}
	NS	`dns01.ost.ch` ⭐
	NS	`dns02.ost.ch`
	NS	`dns03.ost.ch`
	MX	`ost-ch.mail.protection.outlook.com` ⭐
	TXT	`MS=ms41259948`
	TXT	`61sjwdyp9nf20ntp906wskswwq3vtqxq`
	TXT	`QuoVadis=f5454eb2-12d3-4af4-8db6-173f2d4c8e67`
	TXT	`v=spf1 a:sismtp01.ost.ch a:smtp01.ost.ch a:smtp02.ost.ch include:spf.protecti...`
	TXT	`google-site-verification=7YXhAcoroQ4uSttlo7_mlhh6_QY53Uk3fJEDUiXqdFk`
	TXT	`mentimeter-fe4edff1-5775-476e-9db7-8f48b5ad32e8`
	TXT	`google-site-verification=uXsX_aEfoeSpZ9tzZgcmmRCl99PcBClh8usP1_eoLDM`
	TXT	`dell-technologies-domain-verification=ost.ch_ae6a1c17-bbb6-4a86-9d07-7009ba89...`
	TXT	`google-site-verification=1OL9JT_78j1_2bbGT5J54ZLFzcjOKMC1dCO8nf6hrBw`
	TXT	`atlassian-domain-verification=mAHOHBOXxMe1UY/dDOFAqWSzeWJyoFosKuUf0NbaXHjWQcQ...`
	TXT	`have-i-been-pwned-verification=9e7ce5e8d1af7986d410ec1f1991a6e7`
	TXT	`miro-verification=6183e083cd5466bedb6f161552334b22553b7724`
	SOA	`dns01.ost.ch`sysreports@ost.ch serial=14880

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DNS History

1 record (1 active, 0 former)

●CNAMEsiproxy11.ost.ch2026-02-26 → 2026-04-27 · 2 obs

● 2026-02-26 02:09:34
● 2026-04-27 09:57:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	b.nic.ch, e.nic.ch, a.nic.ch, d.nic.ch...	-
ost.ch	dns01.ost.ch, dns02.ost.ch, dns03.ost.ch	4 records

✅ Authoritative Response

Server:86.119.39.141

NS records: dns01.ost.ch, dns02.ost.ch, dns03.ost.ch

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ost.ch (unsigned zone)

⏱️ Timing

Total: 785ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`siproxy11.ost.ch`

📌 Glue Records Collected

Total: 4

In-bailiwick: 4 (dns01.ost.ch, dns02.ost.ch, dns03.ost.ch...)

Analysis

IP Addresses

Two IP numbers are pointed to by proxy.ost.ch: 2001:620:1c0:d212:0:2ff:fe12:15 and 146.136.212.15.

other host names include msengineering.ch, ipek.ch, gps-concorso.ch, naturnahertourismus.ch and fit-care.ch; they share IP numbers with proxy.ost.ch.

proxy.ost.ch - robtex.com

proxy.ost.ch

ost.ch