`firstdefender.de`

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	217.160.0.138^{🇩🇪 IONOS-AS217.160.0.0/16 IONOS-PA-3}
NS	`ns1089.ui-dns.com` ⭐
		A	2001:8d8:fe:53:0:d9a0:5259:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1089.ui-dns.com`
		A	217.160.82.89^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1089.ui-dns.com`
NS	`ns1089.ui-dns.biz`
		A	2001:8d8:fe:53:0:d9a0:5159:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1089.ui-dns.biz`
		A	217.160.81.89^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1089.ui-dns.biz`
NS	`ns1089.ui-dns.de`
		A	2607:f1c0:fe:53:185:132:32:89^{🇺🇸 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	`ns1089.ui-dns.de`
		A	217.160.80.89^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1089.ui-dns.de`
NS	`ns1089.ui-dns.org`
		A	2001:8d8:fe:53:0:d9a0:5359:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1089.ui-dns.org`
		A	217.160.83.89^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1089.ui-dns.org`
MX	`mx00.ionos.de` ⭐
		A	212.227.15.41^{🇩🇪 IONOS-AS212.227.0.0/16 IONOS-PA-2}
			PTR	`mx00.kundenserver.de`
MX	`mx01.ionos.de` ⭐
		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	`ns1089.ui-dns.com`hostmaster@1und1.de 2017-06-12 #8

`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=1773551474

Same first word

firstdefender.com

DNS History

15 records (8 active, 7 former)

●NSns1089.ui-dns.biz2018-10-17 → 2026-03-15 · 3 obs

○ 2016-12-30 13:52:16
● 2018-10-17 06:44:52
● 2026-03-15 05:46:28

●NSns1089.ui-dns.com2018-10-17 → 2026-03-15 · 3 obs

○ 2016-12-30 13:52:16
● 2018-10-17 06:44:52
● 2026-03-15 05:46:28

●NSns1089.ui-dns.de2018-10-17 → 2026-03-15 · 3 obs

○ 2016-12-30 13:52:16
● 2018-10-17 06:44:52
● 2026-03-15 05:46:28

●NSns1089.ui-dns.org2018-10-17 → 2026-03-15 · 3 obs

○ 2016-12-30 13:52:16
● 2018-10-17 06:44:52
● 2026-03-15 05:46:28

○NSns65.1und1.de2015-06-24 → 2016-12-30 · 4 obs

● 2015-06-24 04:08:58
● 2016-12-30 13:52:16
○ 2018-10-17 06:44:52
○ 2026-03-15 05:46:28

○NSns66.1und1.de2015-06-24 → 2016-12-30 · 4 obs

● 2015-06-24 04:08:58
● 2016-12-30 13:52:16
○ 2018-10-17 06:44:52
○ 2026-03-15 05:46:28

●MXmx00.ionos.de2026-03-15 → 2026-03-15 · 3 obs

○ 2018-10-17 06:44:52
● 2026-03-15 05:46:26
● 2026-03-15 05:46:28

○MXmx00.kundenserver.de2015-06-24 → 2018-10-17 · 4 obs

● 2015-06-24 04:08:58
● 2018-10-17 06:44:52
○ 2026-03-15 05:46:26
○ 2026-03-15 05:46:28

●MXmx01.ionos.de2026-03-15 → 2026-03-15 · 3 obs

○ 2018-10-17 06:44:52
● 2026-03-15 05:46:26
● 2026-03-15 05:46:28

○MXmx01.kundenserver.de2015-06-24 → 2018-10-17 · 4 obs

● 2015-06-24 04:08:58
● 2018-10-17 06:44:52
○ 2026-03-15 05:46:26
○ 2026-03-15 05:46:28

●A2001:8d8:100f:f000::2002026-03-15 → 2026-03-15 · 3 obs

○ 2018-10-17 06:44:52
● 2026-03-15 05:46:26
● 2026-03-15 05:46:28

●A217.160.0.1382026-03-15 → 2026-03-15 · 3 obs

○ 2018-10-17 06:44:52
● 2026-03-15 05:46:26
● 2026-03-15 05:46:28

○A217.160.0.2442018-10-17 → 2018-10-17 · 4 obs

○ 2016-12-30 13:52:16
● 2018-10-17 06:44:52
○ 2026-03-15 05:46:26
○ 2026-03-15 05:46:28

○A217.160.114.2482015-06-24 → 2016-04-20 · 4 obs

● 2015-06-24 04:08:58
● 2016-04-20 02:20:34
○ 2016-12-30 13:52:16
○ 2026-03-15 05:46:28

○A217.160.233.2492016-12-30 → 2016-12-30 · 4 obs

○ 2016-04-20 02:20:34
● 2016-12-30 13:52:16
○ 2018-10-17 06:44:52
○ 2026-03-15 05:46:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
firstdefender.de	ns1089.ui-dns.biz, ns1089.ui-dns.de, ns1089.ui-dns.org, ns1089.ui-dns.com	-

✅ Authoritative Response

Server: 217.160.83.89

NS records: ns1089.ui-dns.biz, ns1089.ui-dns.de, ns1089.ui-dns.org, ns1089.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstdefender.de (unsigned zone)

⏱️ Timing

Total: 829ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`217.160.0.138`
AAAA	1	`2001:8d8:100f:f000::200`
NS	4	`ns1089.ui-dns.biz, ns1089.ui-dns.de...`
MX	2	`mx01.ionos.de (pri: 10), mx00.ionos.de (pri: 10)`
TXT	1	`v=spf1 include:_spf-eu.ionos.com ~all`
SOA	1	`ns1089.ui-dns.com hostmaster.1und1.de`

Analysis

IP Addresses

firstdefender.de resolves to two IP numbers: 2001:8d8:100f:f000::200 and 217.160.0.138.

Other host names, for instance sailfish-yachts.com, magmabuilder.com, stylesuite.de, cypheros.at and mec-lashing.de share IP numbers with firstdefender.de.

Name Servers

firstdefender.de is delegated to four name servers: ns1089.ui-dns.biz, ns1089.ui-dns.com, ns1089.ui-dns.de and ns1089.ui-dns.org.

firstdefender.de shares some name servers with other domains, for example topths.com, gruposona.com, mroink.com, aplus-homeinspection.net and mccluretravel.com.

These name servers are commonly paired with ns1081.ui-dns.org, ns1113.ui-dns.de, ns1116.ui-dns.biz, ns1117.ui-dns.de, ns1091.ui-dns.com, ns1022.ui-dns.com and ns1047.ui-dns.org.

Host names with two IP numbers

Two IPs per host:

ns1089.ui-dns.biz points to 2001:8d8:fe:53:0:d9a0:5159:100 and 217.160.81.89

ns1089.ui-dns.com points to 2001:8d8:fe:53:0:d9a0:5259:100 and 217.160.82.89

ns1089.ui-dns.de points to 2607:f1c0:fe:53:185:132:32:89 and 217.160.80.89

ns1089.ui-dns.org points to 2001:8d8:fe:53:0:d9a0:5359:100 and 217.160.83.89

Mail Servers

firstdefender.de is served by two mail servers: mx00.ionos.de and mx01.ionos.de.

firstdefender.de shares the mail server setup with other domains, for example filzis-shop.de, sicod.solutions, soonx.de, tinn-silver.de and who.de.

Host names with a single IP:

mx00.ionos.de points to 212.227.15.41

mx01.ionos.de points to 217.72.192.67

firstdefender.de - robtex.com