`certsear.ch`

DNSSEC	⚠️ Not signed
A	2a0e:ac00:c7:d449::5bc7:d449^{🇬🇧 Comodo2a0e:ac00::/32}
		PTR	`crt.sh`
A	91.199.212.73^{🇬🇧 Comodo91.199.212.0/24 Sectigo CA}
NS	`ns1.sectigodns.com` ⭐ ⚠️ Not in parent delegation
		A	2a0e:ac00:c7:d432::5bc7:d432^{🇬🇧 Comodo2a0e:ac00::/32}
			PTR	`ns1.as48447.net`
		A	91.199.212.50^{🇬🇧 Comodo91.199.212.0/24 Sectigo CA}
			PTR	`ns1.as48447.net`
NS	`ns1.as48447.net` ⚠️ Not in zone NS records
		A	2a0e:ac00:c7:d432::5bc7:d432^{🇬🇧 Comodo2a0e:ac00::/32}
			PTR	`ns1.as48447.net`
		A	91.199.212.50^{🇬🇧 Comodo91.199.212.0/24 Sectigo CA}
			PTR	`ns1.as48447.net`
NS	`ns2.as48447.net` ⚠️ Not in zone NS records
		A	2a0e:ac00:d1:c432::5bd1:c432^{🇬🇧 Comodo2a0e:ac00::/32}
		A	91.209.196.50^{🇬🇧 Comodo91.209.196.0/24 Sectigo}
			PTR	`ns2.as48447.net`
NS	`ns2.sectigodns.com` ⚠️ Not in parent delegation
		A	2a0e:ac00:d1:c432::5bd1:c432^{🇬🇧 Comodo2a0e:ac00::/32}
		A	91.209.196.50^{🇬🇧 Comodo91.209.196.0/24 Sectigo}
			PTR	`ns2.as48447.net`
NS	`ns3.as48447.net` ⚠️ Not in zone NS records
		A	2a0e:ac00:d4:c32::5bd4:c32^{🇬🇧 Comodo2a0e:ac00::/32}
		A	91.212.12.50^{🇬🇧 Comodo91.212.12.0/24 Sectigo}
			PTR	`ns3.as48447.net`
NS	`ns3.sectigodns.com` ⚠️ Not in parent delegation
		A	2a0e:ac00:d4:c32::5bd4:c32^{🇬🇧 Comodo2a0e:ac00::/32}
		A	91.212.12.50^{🇬🇧 Comodo91.212.12.0/24 Sectigo}
			PTR	`ns3.as48447.net`
TXT	`v=spf1 -all`
SOA	`ns1.sectigodns.com`hostmaster@comodoca.com 2025-10-29 #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 2026-03-04 #12

Similar names

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	a.nic.ch, f.nic.ch, d.nic.ch, b.nic.ch...	-
certsear.ch	ns1.as48447.net, ns3.as48447.net, ns2.as48447.net	-

✅ Authoritative Response

Server: 91.199.212.50

NS records: ns1.as48447.net, ns3.as48447.net, ns2.as48447.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for certsear.ch (unsigned zone)

⏱️ Timing

Total: 883ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`91.199.212.73`
AAAA	1	`2a0e:ac00:c7:d449::5bc7:d449`
NS	3	`ns2.sectigodns.com, ns1.sectigodns.com...`
TXT	1	`v=spf1 -all`
SOA	1	`ns1.sectigodns.com hostmaster.comodoca.c`

Analysis

IP Addresses

certsear.ch points to two IP numbers: 2a0e:ac00:c7:d449::5bc7:d449 and 91.199.212.73.

Other host names, for instance cert-watch.com and crt.sh, share IP numbers with certsear.ch.

Name Servers

certsear.ch delegates to six name servers: ns1.sectigodns.com, ns2.sectigodns.com, ns3.sectigodns.com, ns1.as48447.net, ns2.as48447.net and ns3.as48447.net.

certsear.ch shares name servers with other domains at least partially, for instance sitelock.co, servercertificates.com, xolphin.net, sslsure.com and enterprisessl.com.

Host names with two IP numbers:

ns1.sectigodns.com points to: 2a0e:ac00:c7:d432::5bc7:d432 and 91.199.212.50

ns2.sectigodns.com points to: 2a0e:ac00:d1:c432::5bd1:c432 and 91.209.196.50

ns3.sectigodns.com points to: 2a0e:ac00:d4:c32::5bd4:c32 and 91.212.12.50

ns1.as48447.net points to: 2a0e:ac00:c7:d432::5bc7:d432 and 91.199.212.50

ns2.as48447.net points to: 2a0e:ac00:d1:c432::5bd1:c432 and 91.209.196.50

ns3.as48447.net points to: 2a0e:ac00:d4:c32::5bd4:c32 and 91.212.12.50

Host names that point to 2a0e:ac00:c7:d432::5bc7:d432: ns1.sectigodns.com and ns1.as48447.net

Host names that point to 91.199.212.50: ns1.sectigodns.com and ns1.as48447.net

Host names that point to 2a0e:ac00:d1:c432::5bd1:c432: ns2.sectigodns.com and ns2.as48447.net

Host names that point to 91.209.196.50: ns2.sectigodns.com and ns2.as48447.net

Host names that point to 2a0e:ac00:d4:c32::5bd4:c32: ns3.sectigodns.com and ns3.as48447.net

Host names that point to 91.212.12.50: ns3.sectigodns.com and ns3.as48447.net

certsear.ch - robtex.com

certsear.ch

ch