webcourses.de - dns.ninja

`webcourses.de`

DNSSEC	⚠️ Not signed
A	89.31.143.90^{🇩🇪 UDAG89.31.143.0/24}
NS	`ns.udag.de` ⭐
		A	2001:8d8:fe:53:217:160:80:253^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns.udag.de`
		A	217.160.80.253^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns.udag.de`
NS	`ns.udag.net`
		A	2607:f1c0:fe:53:185:132:33:253^{🇺🇸 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	`ns.udag.net`
		A	185.132.33.253^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns.udag.net`
NS	`ns.udag.org`
		A	2607:f1c0:fe:53:185:132:34:253^{🇺🇸 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	`ns.udag.org`
		A	185.132.34.253^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns.udag.org`
MX	`mx00.udag.de` ⭐
		A	62.146.106.39^{🇩🇪 IPX-AS1559862.146.104.0/22 NorthC Deutschland GmbH}
			PTR	`mx00.udag.de`
MX	`mx01.udag.de`⁽²⁰⁾
		A	62.146.106.40^{🇩🇪 IPX-AS1559862.146.104.0/22 NorthC Deutschland GmbH}
			PTR	`mx01.udag.de`
TXT	`v=spf1 include:_smtp.udag.de ~all`
SOA	`ns.udag.de`hostmaster@united-domains.de 2023-11-27 #1

`de`

	DNSSEC	🔒 Signed (DS record present)
	NS	`f.nic.de` ⭐
	NS	`a.nic.de`
	NS	`l.de.net` ⚠️ Not in parent delegation
	NS	`n.de.net` ⚠️ Not in parent delegation
	NS	`s.de.net` ⚠️ Not in parent delegation
	NS	`z.nic.de`
	SOA	`f.nic.de`dns-operations@denic.de serial=1785375131

Same first word

webcourses.tv

webcourses.net

webcourses.de

webcourses.ca

webcourses.us

webcourses.nz

webcourses.com

webcourses.gr

webcourses.ie

Similar names

coursesweb.com

coursewebs.com

sourcesweb.com

sourcewebs.com

websources.com

coursesweb.net

websources.ru

websources.net

DNS History

12 records (6 active, 6 former)

●NSns.udag.de2015-10-24 → 2026-07-30 · 3 obs

○ 2015-06-24 01:16:00
● 2015-10-24 08:11:08
● 2026-07-30 02:06:42

●NSns.udag.net2015-10-24 → 2026-07-30 · 3 obs

○ 2015-06-24 01:16:00
● 2015-10-24 08:11:08
● 2026-07-30 02:06:42

●NSns.udag.org2015-10-24 → 2026-07-30 · 3 obs

○ 2015-06-24 01:16:00
● 2015-10-24 08:11:08
● 2026-07-30 02:06:42

○NSserver1-ns1.udagdns.net2015-06-24 → 2015-06-24 · 3 obs

● 2015-06-24 01:16:00
○ 2015-10-24 08:11:08
○ 2026-07-30 02:06:42

○NSserver1-ns2.udagdns.net2015-06-24 → 2015-06-24 · 3 obs

● 2015-06-24 01:16:00
○ 2015-10-24 08:11:08
○ 2026-07-30 02:06:42

○NSserver1-ns3.udagdns.net2015-06-24 → 2015-06-24 · 3 obs

● 2015-06-24 01:16:00
○ 2015-10-24 08:11:08
○ 2026-07-30 02:06:42

●MXmx00.udag.de2015-06-24 → 2026-07-30 · 2 obs

● 2015-06-24 01:16:00
● 2026-07-30 02:06:42

●MXmx01.udag.de2015-06-24 → 2026-07-30 · 2 obs

● 2015-06-24 01:16:00
● 2026-07-30 02:06:42

○A89.31.143.12015-10-24 → 2015-10-24 · 4 obs

○ 2015-06-24 01:16:00
● 2015-10-24 08:11:08
○ 2015-12-30 17:23:08
○ 2026-07-30 02:06:42

○A89.31.143.142015-06-24 → 2015-06-24 · 3 obs

● 2015-06-24 01:16:00
○ 2015-10-24 08:11:08
○ 2026-07-30 02:06:42

○A89.31.143.162015-12-30 → 2017-06-28 · 5 obs

○ 2015-10-24 08:11:08
● 2015-12-30 17:23:08
● 2017-06-28 01:49:48
○ 2026-06-06 01:23:26
○ 2026-07-30 02:06:42

●A89.31.143.902026-06-06 → 2026-07-30 · 3 obs

○ 2017-06-28 01:49:48
● 2026-06-06 01:23:26
● 2026-07-30 02:06:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
webcourses.de	ns.udag.de, ns.udag.org, ns.udag.net	2 records

✅ Authoritative Response

Server:185.132.33.253

NS records: ns.udag.de, ns.udag.org, ns.udag.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for webcourses.de (unsigned zone)

⏱️ Timing

Total: 640ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`89.31.143.90`
NS	3	`ns.udag.de, ns.udag.org...`
MX	2	`mx01.udag.de (pri: 20), mx00.udag.de (pri: 10)`
TXT	1	`v=spf1 include:_smtp.udag.de ~all`
SOA	1	`ns.udag.de hostmaster.united-domains.de`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns.udag.de, ns.udag.de)

Analysis

IP Addresses

webcourses.de directs to one IP number, which is 89.31.143.90.

Among the host names that share IP numbers with webcourses.de are uniweb.de, goldbaerg.com, estermaier.info and two others.

Name Servers

Three name servers are authoritative for webcourses.de: ns.udag.de, ns.udag.net and ns.udag.org.

webcourses.de partially shares its NS delegation with several other domains, including tripar.de, celebi.gmbh, rolandsteiner.de and two others.

ns.udag.de resolves to 217.160.80.253 and 2001:8d8:fe:53:217:160:80:253. ns.udag.net resolves to 185.132.33.253 and 2607:f1c0:fe:53:185:132:33:253. ns.udag.org resolves to 185.132.34.253 and 2607:f1c0:fe:53:185:132:34:253. All three hostnames point to two IP numbers each.

Mail Servers

The MX records for webcourses.de point to two mail servers: mx00.udag.de and mx01.udag.de.

webcourses.de has the same mail server arrangement as a number of other domains, for example overclockers.fr, meilhaus.ch, knime.hk and two more.

mx00.udag.de resolves to 62.146.106.39. mx01.udag.de resolves to 62.146.106.40. Both host names point to a single IP number.