classopen.org - dns.ninja

`classopen.org`

DNSSEC	⚠️ Not signed
A	2001:8d8:100f:f000::200^{🇩🇪 IONOS-AS2001:8d8::/32 DE-IONOS-20020910}
		PTR	`2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com`
A	217.160.0.210^{🇩🇪 IONOS-AS217.160.0.0/16 IONOS-PA-3}
NS	`ns1093.ui-dns.org` ⭐
		A	2001:8d8:fe:53:0:d9a0:535d:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1093.ui-dns.org`
		A	217.160.83.93^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1093.ui-dns.org`
NS	`ns1093.ui-dns.biz`
		A	2001:8d8:fe:53:0:d9a0:515d:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1093.ui-dns.biz`
		A	217.160.81.93^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1093.ui-dns.biz`
NS	`ns1093.ui-dns.com`
		A	2001:8d8:fe:53:0:d9a0:525d:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1093.ui-dns.com`
		A	217.160.82.93^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1093.ui-dns.com`
NS	`ns1093.ui-dns.de`
		A	2607:f1c0:fe:53:185:132:32:93^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`ns1093.ui-dns.de`
		A	217.160.80.93^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1093.ui-dns.de`
MX	`mx00.ionos.fr` ⭐
		A	212.227.15.41^{🇩🇪 IONOS-AS212.227.0.0/16 IONOS-PA-2}
			PTR	`mx00.kundenserver.de`
MX	`mx01.ionos.fr` ⭐
		A	217.72.192.67^{🇩🇪 IONOS-AS217.72.192.0/20 Web.de}
			PTR	`mx01.kundenserver.de`
TXT	`v=spf1 include:_spf-eu.ionos.com ~all`
SOA	`ns1093.ui-dns.org`hostmaster@1and1.fr 2017-03-29 #24

`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=1782934299

Same first word

classopen.org

classopen.com

Similar names

DNS History

15 records (8 active, 7 former)

●NSns1093.ui-dns.biz2026-03-04 → 2026-07-01 · 3 obs

○ 2017-08-30 06:24:34
● 2026-03-04 03:26:26
● 2026-07-01 20:02:44

●NSns1093.ui-dns.com2026-03-04 → 2026-07-01 · 3 obs

○ 2017-08-30 06:24:34
● 2026-03-04 03:26:26
● 2026-07-01 20:02:44

●NSns1093.ui-dns.de2026-03-04 → 2026-07-01 · 3 obs

○ 2017-08-30 06:24:34
● 2026-03-04 03:26:26
● 2026-07-01 20:02:44

●NSns1093.ui-dns.org2026-03-04 → 2026-07-01 · 3 obs

○ 2017-08-30 06:24:34
● 2026-03-04 03:26:26
● 2026-07-01 20:02:44

○NSns61.1and1.fr2015-06-19 → 2017-08-30 · 4 obs

● 2015-06-19 01:04:56
● 2017-08-30 06:24:34
○ 2026-03-04 03:26:26
○ 2026-07-01 20:02:44

○NSns62.1and1.fr2015-06-19 → 2017-08-30 · 4 obs

● 2015-06-19 01:04:56
● 2017-08-30 06:24:34
○ 2026-03-04 03:26:26
○ 2026-07-01 20:02:44

○MXmx00.1and1.fr2015-06-19 → 2017-08-30 · 4 obs

● 2015-06-19 01:04:56
● 2017-08-30 06:24:34
○ 2026-03-04 03:26:26
○ 2026-07-01 20:02:44

●MXmx00.ionos.fr2026-03-04 → 2026-07-01 · 3 obs

○ 2017-08-30 06:24:34
● 2026-03-04 03:26:26
● 2026-07-01 20:02:44

○MXmx01.1and1.fr2015-06-19 → 2017-08-30 · 4 obs

● 2015-06-19 01:04:56
● 2017-08-30 06:24:34
○ 2026-03-04 03:26:26
○ 2026-07-01 20:02:44

●MXmx01.ionos.fr2026-03-04 → 2026-07-01 · 3 obs

○ 2017-08-30 06:24:34
● 2026-03-04 03:26:26
● 2026-07-01 20:02:44

●A2001:8d8:100f:f000::2002026-03-04 → 2026-07-01 · 3 obs

○ 2017-08-30 06:24:34
● 2026-03-04 03:26:26
● 2026-07-01 20:02:44

●A217.160.0.2102026-03-04 → 2026-07-01 · 3 obs

○ 2017-08-30 06:24:34
● 2026-03-04 03:26:26
● 2026-07-01 20:02:44

○A217.160.0.782017-08-30 → 2017-08-30 · 4 obs

○ 2016-12-04 07:15:22
● 2017-08-30 06:24:34
○ 2026-03-04 03:26:26
○ 2026-07-01 20:02:44

○A217.160.231.1572016-12-04 → 2016-12-04 · 4 obs

○ 2016-04-16 16:36:14
● 2016-12-04 07:15:22
○ 2017-08-30 06:24:34
○ 2026-07-01 20:02:44

○A82.165.97.1612015-06-19 → 2016-04-16 · 4 obs

● 2015-06-19 01:04:56
● 2016-04-16 16:36:14
○ 2016-12-04 07:15:22
○ 2026-07-01 20:02:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org	-
classopen.org	ns1093.ui-dns.biz, ns1093.ui-dns.de, ns1093.ui-dns.org, ns1093.ui-dns.com	2 records

✅ Authoritative Response

Server:217.160.80.93

NS records: ns1093.ui-dns.biz, ns1093.ui-dns.de, ns1093.ui-dns.org, ns1093.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classopen.org (unsigned zone)

⏱️ Timing

Total: 678ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`217.160.0.210`
AAAA	1	`2001:8d8:100f:f000::200`
NS	4	`ns1093.ui-dns.org, ns1093.ui-dns.biz...`
MX	2	`mx00.ionos.fr (pri: 10), mx01.ionos.fr (pri: 10)`
TXT	1	`v=spf1 include:_spf-eu.ionos.com ~all`
SOA	1	`ns1093.ui-dns.org hostmaster.1and1.fr`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1093.ui-dns.org, ns1093.ui-dns.org)

Analysis

IP Addresses

classopen.org directs to two IP numbers, 217.160.0.210 and 2001:8d8:100f:f000::200

Additional host names — ck-artwork.de, solox.eu, bentopast.com and two others — share IP numbers with classopen.org.

Name Servers

classopen.org has four authoritative name servers: ns1093.ui-dns.biz, ns1093.ui-dns.com, ns1093.ui-dns.de and ns1093.ui-dns.org.

classopen.org shares at least some of its name servers with other domains, including arrahmanian.com, richardrichards.com, quaternia.com and two others.

These name servers are frequently paired with the name servers ns1078.ui-dns.org, ns1059.ui-dns.org and ns1118.ui-dns.biz.

The host names ns1093.ui-dns.biz, ns1093.ui-dns.com, ns1093.ui-dns.de and ns1093.ui-dns.org each resolve to two IP addresses: ns1093.ui-dns.biz resolves to 217.160.81.93 and 2001:8d8:fe:53:0:d9a0:515d:100; ns1093.ui-dns.com resolves to 217.160.82.93 and 2001:8d8:fe:53:0:d9a0:525d:100; ns1093.ui-dns.de resolves to 217.160.80.93 and 2607:f1c0:fe:53:185:132:32:93; ns1093.ui-dns.org resolves to 217.160.83.93 and 2001:8d8:fe:53:0:d9a0:535d:100.

Mail Servers

classopen.org has two mail servers: mx00.ionos.fr and mx01.ionos.fr.

classopen.org shares the same mail server setup as other domains, including atomicsoda.fr, cogetec.eu, admoveo.fr and two others.

classopen.org shares at least some of its mail servers with other domains, such as tiphaine-massages.com.

mx00.ionos.fr and mx01.ionos.fr each resolve to one IP number: mx00.ionos.fr points to 212.227.15.41 and mx01.ionos.fr points to 217.72.192.67.