upskill.de - dns.ninja

`upskill.de`

DNSSEC	⚠️ Not signed
A	144.126.247.85^{🇩🇪 DIGITALOCEAN144.126.244.0/22 DigitalOcean}
NS	`nsa7.schlundtech.de` ⭐
		A	2607:f1c0:fe:53:185:132:34:227^{🇺🇸 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-stec.ui-dns.com`
		A	185.132.34.227^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns-stec.ui-dns.com`
NS	`nsb7.schlundtech.de`
		A	2607:f1c0:fe:53:185:132:35:227^{🇺🇸 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-stec.ui-dns.org`
		A	185.132.35.227^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns-stec.ui-dns.org`
NS	`nsc7.schlundtech.de`
		A	2001:8d8:fe:53:217:160:80:227^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns-stec.ui-dns.de`
		A	217.160.80.227^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns-stec.ui-dns.de`
NS	`nsd7.schlundtech.de`
		A	2001:8d8:fe:53:217:160:81:227^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns-stec.ui-dns.biz`
		A	217.160.81.227^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns-stec.ui-dns.biz`
MX	`upskill-de.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::5^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db3pr0202cu00205.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::1^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as9pr07cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::6^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am4pr0401cu00106.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::b^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00103.inbound.protection.outlook.com`
		A	52.101.68.5^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-du2pr03cu00105.inbound.protection.outlook.com`
		A	52.101.68.25^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db8pr02cu00101.inbound.protection.outlook.com`
		A	52.101.73.4^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr83cu00404.inbound.protection.outlook.com`
		A	52.101.73.16^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as2pr05cu00100.inbound.protection.outlook.com`
TXT	`MS=ms87282630`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
SOA	`nsa7.schlundtech.de`do-not-reply@upskill.de 2023-01-25 #0

`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=1783979383

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DNS History

14 records (6 active, 8 former)

●NSnsa7.schlundtech.de2026-03-01 → 2026-07-13 · 3 obs

○ 2020-03-29 21:07:14
● 2026-03-01 15:44:54
● 2026-07-13 22:06:02

●NSnsb7.schlundtech.de2026-03-01 → 2026-07-13 · 3 obs

○ 2020-03-29 21:07:14
● 2026-03-01 15:44:54
● 2026-07-13 22:06:02

●NSnsc7.schlundtech.de2026-03-01 → 2026-07-13 · 3 obs

○ 2020-03-29 21:07:14
● 2026-03-01 15:44:54
● 2026-07-13 22:06:02

●NSnsd7.schlundtech.de2026-03-01 → 2026-07-13 · 3 obs

○ 2020-03-29 21:07:14
● 2026-03-01 15:44:54
● 2026-07-13 22:06:02

○NSq1.dnsservice.net2020-03-29 → 2020-03-29 · 4 obs

○ 2017-04-01 06:14:10
● 2020-03-29 21:07:14
○ 2026-03-01 15:44:54
○ 2026-07-13 22:06:02

○NSq2.dnsservice.net2020-03-29 → 2020-03-29 · 4 obs

○ 2017-04-01 06:14:10
● 2020-03-29 21:07:14
○ 2026-03-01 15:44:54
○ 2026-07-13 22:06:02

○NSw1.dnsservice.net2015-08-19 → 2017-04-01 · 4 obs

● 2015-08-19 14:45:14
● 2017-04-01 06:14:10
○ 2020-03-29 21:07:14
○ 2026-07-13 22:06:02

○NSw2.dnsservice.net2015-08-19 → 2017-04-01 · 4 obs

● 2015-08-19 14:45:14
● 2017-04-01 06:14:10
○ 2020-03-29 21:07:14
○ 2026-07-13 22:06:02

○MXmail.upskill.de2015-08-19 → 2017-04-01 · 4 obs

● 2015-08-19 14:45:14
● 2017-04-01 06:14:10
○ 2020-03-29 21:07:14
○ 2026-07-13 22:06:02

○MXspamschutz.webhoster.de2020-03-29 → 2020-03-29 · 4 obs

○ 2017-04-01 06:14:10
● 2020-03-29 21:07:14
○ 2026-03-01 15:44:54
○ 2026-07-13 22:06:02

●MXupskill-de.mail.protection.outlook.com2026-03-01 → 2026-07-13 · 3 obs

○ 2020-03-29 21:07:14
● 2026-03-01 15:44:54
● 2026-07-13 22:06:02

●A144.126.247.852026-03-01 → 2026-07-13 · 3 obs

○ 2020-03-29 21:07:14
● 2026-03-01 15:44:54
● 2026-07-13 22:06:02

○A212.172.221.72015-08-19 → 2017-04-01 · 4 obs

● 2015-08-19 14:45:14
● 2017-04-01 06:14:10
○ 2020-03-29 21:07:14
○ 2026-07-13 22:06:02

○A212.172.221.722020-03-29 → 2020-03-29 · 4 obs

○ 2017-04-01 06:14:10
● 2020-03-29 21:07:14
○ 2026-03-01 15:44:54
○ 2026-07-13 22:06:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
upskill.de	nsd7.schlundtech.de, nsb7.schlundtech.de, nsa7.schlundtech.de, nsc7.schlundtech.de	-

✅ Authoritative Response

Server:217.160.80.227

NS records: nsd7.schlundtech.de, nsb7.schlundtech.de, nsa7.schlundtech.de, nsc7.schlundtech.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for upskill.de (unsigned zone)

⏱️ Timing

Total: 2366ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`144.126.247.85`
NS	4	`nsb7.schlundtech.de, nsd7.schlundtech.de...`
MX	1	`upskill-de.mail.protection.outlook.com (`
TXT	2	`v=spf1 include:spf.protection.outlook.co, MS=ms87282630`
SOA	1	`nsa7.schlundtech.de do-not-reply.upskill`

Analysis

IP Addresses

upskill.de has exactly one IP address — 144.126.247.85.

Name Servers

Four name servers handle the delegation for upskill.de: nsa7.schlundtech.de, nsb7.schlundtech.de, nsc7.schlundtech.de and nsd7.schlundtech.de.

upskill.de has at least partial name server overlap with other domains, such as yasal.de, handytherapie.de, dropp-office.de and two others.

nsa7.schlundtech.de, nsb7.schlundtech.de, nsc7.schlundtech.de and nsd7.schlundtech.de all point to exactly two IP numbers each: nsa7.schlundtech.de → 185.132.34.227 and 2607:f1c0:fe:53:185:132:34:227; nsb7.schlundtech.de → 185.132.35.227 and 2607:f1c0:fe:53:185:132:35:227; nsc7.schlundtech.de → 217.160.80.227 and 2001:8d8:fe:53:217:160:80:227; nsd7.schlundtech.de → 217.160.81.227 and 2001:8d8:fe:53:217:160:81:227.

Mail Servers

upskill.de uses one mail server — upskill-de.mail.protection.outlook.com.

upskill-de.mail.protection.outlook.com has 8 IP addresses: 52.101.68.5, 52.101.68.25, 52.101.73.4 plus 5 more.