`openproblemgarden.org`

DNSSEC	⚠️ Not signed
A	31.31.74.53^{🇨🇿 WEDOS31.31.72.0/21 Internet, a.s.}
NS	`kudykam.ms.mff.cuni.cz` ⭐
		A	2001:718:1e03:801::11^{🇨🇿 CESNET2001:718::/32 6-TCZ}
			PTR	`kudykam.ms.mff.cuni.cz`
NS	`akamas.troja.mff.cuni.cz`
SOA	`kudykam.ms.mff.cuni.cz`wizards@kam.mff.cuni.cz 2019-12-29 #2

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1777050295

Same first word

openproblemgarden.org

DNS History

8 records (3 active, 5 former)

●NSakamas.troja.mff.cuni.cz2020-02-27 → 2026-04-24 · 3 obs

○ 2017-03-17 09:56:42
● 2020-02-27 01:30:32
● 2026-04-24 17:15:56

●NSkudykam.ms.mff.cuni.cz2020-02-27 → 2026-04-24 · 3 obs

○ 2017-03-17 09:56:42
● 2020-02-27 01:30:32
● 2026-04-24 17:15:56

○NSns1.regzone.cz2015-07-26 → 2017-03-17 · 4 obs

● 2015-07-26 03:28:20
● 2017-03-17 09:56:42
○ 2020-02-27 01:30:32
○ 2026-04-24 17:15:56

○NSns1.regzone.de2015-07-26 → 2017-03-17 · 4 obs

● 2015-07-26 03:28:20
● 2017-03-17 09:56:42
○ 2020-02-27 01:30:32
○ 2026-04-24 17:15:56

○NSns1.regzone.info2015-07-26 → 2017-03-17 · 4 obs

● 2015-07-26 03:28:20
● 2017-03-17 09:56:42
○ 2020-02-27 01:30:32
○ 2026-04-24 17:15:56

○A195.113.20.162015-07-26 → 2017-03-17 · 4 obs

● 2015-07-26 03:28:20
● 2017-03-17 09:56:42
○ 2020-02-27 01:30:32
○ 2026-04-24 17:15:56

○A2001:718:1e03:801::202015-07-26 → 2017-03-17 · 4 obs

● 2015-07-26 03:28:20
● 2017-03-17 09:56:42
○ 2020-02-27 01:30:32
○ 2026-04-24 17:15:56

●A31.31.74.532020-02-27 → 2026-04-24 · 3 obs

○ 2017-03-17 09:56:42
● 2020-02-27 01:30:32
● 2026-04-24 17:15:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-
openproblemgarden.org	akamas.troja.mff.cuni.cz, kudykam.ms.mff.cuni.cz	-

✅ Authoritative Response

Server:195.113.10.4

NS records: akamas.troja.mff.cuni.cz, kudykam.ms.mff.cuni.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for openproblemgarden.org (unsigned zone)

⏱️ Timing

Total: 863ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`31.31.74.53`
NS	2	`kudykam.ms.mff.cuni.cz, akamas.troja.mff.cuni.cz`
SOA	1	`kudykam.ms.mff.cuni.cz wizards.kam.mff.c`

Analysis

IP Addresses

openproblemgarden.org points to a single IP number: 31.31.74.53.

Name Servers

openproblemgarden.org is delegated to two name servers: kudykam.ms.mff.cuni.cz and akamas.troja.mff.cuni.cz.

openproblemgarden.org uses the same name server setup as other domains, including naboj.org.

openproblemgarden.org at least partially shares name servers with other domains, for instance lingol.cz, ioinformatics.org, 1.8.0.3.0.e.1.8.1.7.0.1.0.0.2.ip6.arpa, kam.mff.cuni.cz and iuuk.mff.cuni.cz.

These name servers are commonly used with akamas.n.mff.cuni.cz, ns.ms.mff.cuni.cz, sns.ms.mff.cuni.cz and jabberwock.ucw.cz.

Host names with one IP number: kudykam.ms.mff.cuni.cz points to: 2001:718:1e03:801::11.

openproblemgarden.org - robtex.com