`rnc.cz`

DNSSEC	⚠️ Not signed
NS	`ns1.savana.cz` ⚠️ Not in zone NS records
		A	2a00:1e40:a:53::5^{🇸🇰 IGNUM-AS2a00:1e40:a::/48}
			PTR	`ns1-bra.core.webglobe.com`
		A	185.65.223.35^{🇸🇰 IGNUM-AS185.65.223.0/24}
			PTR	`ns1-bra.core.webglobe.com`
NS	`ns2.savana.cz` ⚠️ Not in zone NS records
		A	2001:1ab0:7e1e:2::5^{🇨🇿 IGNUM-AS2001:1ab0::/32 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/}
			PTR	`ns2-prg.core.webglobe.com`
		A	217.31.48.201^{🇨🇿 IGNUM-AS217.31.48.0/20 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/}
			PTR	`ns2-prg.core.webglobe.com`
NS	`ns3.savana.cz` ⚠️ Not in zone NS records
		A	2a03:b0c0:1:d0::1090:2001^{🇬🇧 DIGITALOCEAN2a03:b0c0:1::/48 DigitalOcean}
			PTR	`ns3-lon.core.webglobe.com`
		A	178.62.60.201^{🇬🇧 DIGITALOCEAN178.62.0.0/18 DigitalOcean}
			PTR	`ns3-lon.core.webglobe.com`

`cz`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.ns.nic.cz` ⭐
	NS	`b.ns.nic.cz`
	NS	`c.ns.nic.cz`
	NS	`d.ns.nic.cz`
	SOA	`a.ns.nic.cz`hostmaster@nic.cz serial=1775962034

Same first word

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Similar names

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crn.ch

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cnr.com.br

ncr.co.il

DNS History

11 records (3 active, 8 former)

●NSns1.savana.cz2015-07-10 → 2026-04-12 · 2 obs

● 2015-07-10 22:22:30
● 2026-04-12 03:12:06

●NSns2.savana.cz2015-07-10 → 2026-04-12 · 2 obs

● 2015-07-10 22:22:30
● 2026-04-12 03:12:06

●NSns3.savana.cz2015-07-10 → 2026-04-12 · 2 obs

● 2015-07-10 22:22:30
● 2026-04-12 03:12:06

○MXmx1.savana.cz2015-07-10 → 2021-09-28 · 4 obs

● 2015-07-10 22:22:30
● 2021-09-28 15:37:14
○ 2026-03-26 03:33:58
○ 2026-04-12 03:12:06

○MXmx2.savana.cz2015-07-10 → 2021-09-28 · 4 obs

● 2015-07-10 22:22:30
● 2021-09-28 15:37:14
○ 2026-03-26 03:33:58
○ 2026-04-12 03:12:06

○MXmx3.savana.cz2017-08-06 → 2017-08-06 · 4 obs

○ 2015-07-10 22:22:30
● 2017-08-06 20:48:08
○ 2021-01-08 17:16:38
○ 2026-04-12 03:12:06

○MXmx4.savana.cz2017-08-06 → 2017-08-06 · 4 obs

○ 2015-07-10 22:22:30
● 2017-08-06 20:48:08
○ 2021-01-08 17:16:38
○ 2026-04-12 03:12:06

○A109.123.209.1862015-07-10 → 2017-01-25 · 4 obs

● 2015-07-10 22:22:30
● 2017-01-25 14:04:54
○ 2017-08-06 20:48:08
○ 2026-04-12 03:12:06

○A185.183.8.1692017-08-06 → 2021-09-28 · 5 obs

○ 2017-01-25 14:04:54
● 2017-08-06 20:48:08
● 2021-09-28 15:37:14
○ 2026-03-26 03:33:58
○ 2026-04-12 03:12:06

○A2001:1528:146:0:1:32:1000:12015-07-10 → 2017-01-25 · 4 obs

● 2015-07-10 22:22:30
● 2017-01-25 14:04:54
○ 2017-08-06 20:48:08
○ 2026-04-12 03:12:06

○A2a00:1ed0:1:1800:7:32:1000:12017-08-06 → 2021-09-28 · 5 obs

○ 2017-01-25 14:04:54
● 2017-08-06 20:48:08
● 2021-09-28 15:37:14
○ 2026-03-26 03:33:58
○ 2026-04-12 03:12:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	c.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz	-
rnc.cz	ns1.savana.cz, ns2.savana.cz, ns3.savana.cz	-

✅ Authoritative Response

Server:185.65.223.35

NS records: ns1.savana.cz, ns2.savana.cz, ns3.savana.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rnc.cz (unsigned zone)

⏱️ Timing

Total: 1043ms | Queries: -

📄 Records

Type	Count	Sample Data

Analysis

Name Servers

The domain rnc.cz is delegated to three name servers: ns1.savana.cz, ns2.savana.cz and ns3.savana.cz.

rnc.cz shares name servers with other domains at least partially, for instance certiso.cz, cmz.cz, gospellimited.cz, mivali.ro and altany-vysinka.cz.

Host names with two IP numbers:

ns1.savana.cz points to 2a00:1e40:a:53::5 and 185.65.223.35

ns2.savana.cz points to 2001:1ab0:7e1e:2::5 and 217.31.48.201

ns3.savana.cz points to 2a03:b0c0:1:d0::1090:2001 and 178.62.60.201

rnc.cz - robtex.com

rnc.cz

cz

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Name Servers

`rnc.cz`

`cz`