studbio.de - dns.ninja

`studbio.de`

DNSSEC	⚠️ Not signed
A	146.75.28.95^{🇺🇸 Fastly146.75.28.0/22}
NS	`pdns1.ultradns.net` ⭐
		A	2001:502:f3ff::1^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns1.ultradns.net`
		A	204.74.108.1^{🇺🇸 MAINT-ID-12008204.74.108.0/24 Neustar}
			PTR	`pdns1.ultradns.net`
NS	`pdns2.ultradns.net`
		A	2610:a1:1014::1^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns2.ultradns.net`
		A	204.74.109.1^{🇺🇸 MAINT-ID-12008204.74.109.0/24 Neustar}
			PTR	`pdns2.ultradns.net`
NS	`pdns3.ultradns.org`
		A	2610:a1:1015::1^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns3.ultradns.org`
		A	199.7.68.1^{🇺🇸 MAINT-ID-12008199.7.68.0/24 Neustar}
			PTR	`pdns3.ultradns.org`
NS	`pdns4.ultradns.org`
		A	2001:502:4612::1^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns4.ultradns.org`
		A	199.7.69.1^{🇺🇸 MAINT-ID-12008199.7.69.0/24 Neustar}
			PTR	`pdns4.ultradns.org`
NS	`pdns5.ultradns.info`
		A	2610:a1:1016::1^{🇺🇸 MAINT-ID-120082610:a1:1016::/48 Neustar}
			PTR	`pdns5.ultradns.info`
		A	204.74.114.1^{🇺🇸 MAINT-ID-12008204.74.114.0/24 Neustar}
			PTR	`pdns5.ultradns.info`
NS	`pdns6.ultradns.co.uk`
		A	2610:a1:1017::1^{🇺🇸 MAINT-ID-120082610:a1:1017::/48 Neustar}
			PTR	`pdns6.ultradns.co.uk`
		A	204.74.115.1^{🇺🇸 MAINT-ID-12008204.74.115.0/24 Neustar}
			PTR	`pdns6.ultradns.co.uk`
SOA	`pdns1.ultradns.net`hostmaster@springer.com 2017-01-23 #18

`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=1786147516

Same first word

studbio.de

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DNS History

17 records (7 active, 10 former)

○NSdns1.springer.com2015-04-17 → 2019-04-13 · 4 obs

● 2015-04-17 06:27:30
● 2019-04-13 03:35:44
○ 2026-02-15 11:06:36
○ 2026-08-08 00:34:26

○NSdns2.springer.com2015-04-17 → 2019-04-13 · 4 obs

● 2015-04-17 06:27:30
● 2019-04-13 03:35:44
○ 2026-02-15 11:06:36
○ 2026-08-08 00:34:26

○NSdns4.springer.com2015-04-17 → 2019-04-13 · 4 obs

● 2015-04-17 06:27:30
● 2019-04-13 03:35:44
○ 2026-02-15 11:06:36
○ 2026-08-08 00:34:26

●NSpdns1.ultradns.net2026-02-15 → 2026-08-08 · 3 obs

○ 2019-04-13 03:35:44
● 2026-02-15 11:06:36
● 2026-08-08 00:34:26

●NSpdns2.ultradns.net2026-02-15 → 2026-08-08 · 3 obs

○ 2019-04-13 03:35:44
● 2026-02-15 11:06:36
● 2026-08-08 00:34:26

●NSpdns3.ultradns.org2026-02-15 → 2026-08-08 · 3 obs

○ 2019-04-13 03:35:44
● 2026-02-15 11:06:36
● 2026-08-08 00:34:26

●NSpdns4.ultradns.org2026-02-15 → 2026-08-08 · 3 obs

○ 2019-04-13 03:35:44
● 2026-02-15 11:06:36
● 2026-08-08 00:34:26

●NSpdns5.ultradns.info2026-02-15 → 2026-08-08 · 3 obs

○ 2019-04-13 03:35:44
● 2026-02-15 11:06:36
● 2026-08-08 00:34:26

●NSpdns6.ultradns.co.uk2026-02-15 → 2026-08-08 · 3 obs

○ 2019-04-13 03:35:44
● 2026-02-15 11:06:36
● 2026-08-08 00:34:26

○A146.75.116.952026-06-25 → 2026-06-25 · 4 obs

○ 2026-06-16 04:37:36
● 2026-06-25 19:43:54
○ 2026-06-30 03:53:02
○ 2026-08-08 00:34:26

●A146.75.28.952026-03-21 → 2026-08-08 · 16 obs

○ 2026-03-17 22:48:34
● 2026-03-21 15:57:28
○ 2026-03-25 06:36:12
○ 2026-04-03 09:52:48
● 2026-04-05 14:29:06
● 2026-04-10 03:14:04
○ 2026-04-17 22:08:04
○ 2026-04-20 14:40:12
● 2026-05-01 22:10:10
○ 2026-05-05 06:09:58
○ 2026-05-26 04:05:48
● 2026-06-11 18:44:54
○ 2026-06-12 07:38:00
● 2026-07-08 13:16:52
○ 2026-07-14 03:41:28
● 2026-08-08 00:34:26

○A146.75.92.952026-02-15 → 2026-07-28 · 26 obs

○ 2019-04-13 03:35:44
● 2026-02-15 11:06:36
● 2026-02-26 05:29:38
○ 2026-03-17 22:48:34
○ 2026-03-21 15:57:28
● 2026-03-25 06:36:12
● 2026-03-31 01:53:50
○ 2026-04-03 09:52:48
○ 2026-04-17 22:08:04
● 2026-04-20 14:40:12
○ 2026-05-01 22:10:10
● 2026-05-05 06:09:58
○ 2026-05-15 22:20:50
● 2026-05-19 03:53:22
● 2026-05-26 04:05:48
○ 2026-06-11 18:44:54
● 2026-06-12 07:38:00
○ 2026-06-16 01:57:58
● 2026-06-16 04:37:36
○ 2026-06-25 19:43:54
● 2026-06-30 03:53:02
○ 2026-07-08 13:16:52
● 2026-07-14 03:41:28
○ 2026-07-21 03:34:46
● 2026-07-28 11:39:52
○ 2026-08-08 00:34:26

○A151.101.204.952026-06-16 → 2026-06-16 · 4 obs

○ 2026-06-12 07:38:00
● 2026-06-16 01:57:58
○ 2026-06-16 04:37:36
○ 2026-08-08 00:34:26

○A151.101.40.952026-04-03 → 2026-07-21 · 6 obs

○ 2026-03-31 01:53:50
● 2026-04-03 09:52:48
○ 2026-04-05 14:29:06
● 2026-07-21 03:34:46
○ 2026-07-21 04:41:30
○ 2026-08-08 00:34:26

○A195.128.8.1342017-02-12 → 2019-04-13 · 5 obs

○ 2016-07-01 14:56:24
● 2017-02-12 16:57:44
● 2019-04-13 03:35:44
○ 2026-02-15 11:06:36
○ 2026-08-08 00:34:26

○A199.232.36.952026-03-17 → 2026-05-15 · 10 obs

○ 2026-02-26 05:29:38
● 2026-03-17 22:48:34
○ 2026-03-21 15:57:28
○ 2026-04-10 03:14:04
● 2026-04-17 22:08:04
○ 2026-04-20 14:40:12
○ 2026-05-05 06:09:58
● 2026-05-15 22:20:50
○ 2026-05-19 03:53:22
○ 2026-08-08 00:34:26

○A62.50.45.352015-04-17 → 2016-07-01 · 4 obs

● 2015-04-17 06:27:30
● 2016-07-01 14:56:24
○ 2017-02-12 16:57:44
○ 2026-08-08 00:34:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, z.nic.de, f.nic.de	-
studbio.de	pdns5.ultradns.info, pdns3.ultradns.org, pdns2.ultradns.net, pdns1.ultradns.net...	-

✅ Authoritative Response

Server:204.74.115.1

NS records: pdns5.ultradns.info, pdns3.ultradns.org, pdns2.ultradns.net, pdns1.ultradns.net, pdns4.ultradns.org, pdns6.ultradns.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studbio.de (unsigned zone)

⏱️ Timing

Total: 1144ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`199.232.36.95`
NS	6	`pdns1.ultradns.net, pdns2.ultradns.net...`
SOA	1	`pdns1.ultradns.net hostmaster.springer.c`

Analysis

IP Addresses

studbio.de points to a single IP number: 146.75.28.95.

Additional host names — springer.com, springernature.com, bacandrology.com and two others — share IP numbers with studbio.de.

Name Servers

The DNS delegation for studbio.de covers 6 name servers: pdns5.ultradns.info, pdns1.ultradns.net, pdns2.ultradns.net and 3 more.

At least some of studbio.de's name servers are shared with other domains, for example cheapticketspot.net, dealdetector.cz, 1800hotflesh.com and two more.

These name servers tend to co-occur with pdns3.ultradns.org, pdns4.ultradns.org, pdns6.ultradns.co.uk and 7 other name servers in the same DNS delegations.

Host names with two IP numbers:

pdns5.ultradns.info maps to two IP addresses — 204.74.114.1 and 2610:a1:1016::1.

pdns1.ultradns.net maps to two IP addresses — 204.74.108.1 and 2001:502:f3ff::1.

pdns2.ultradns.net maps to two IP addresses — 204.74.109.1 and 2610:a1:1014::1.

pdns3.ultradns.org maps to two IP addresses — 199.7.68.1 and 2610:a1:1015::1.

pdns4.ultradns.org maps to two IP addresses — 199.7.69.1 and 2001:502:4612::1.

pdns6.ultradns.co.uk maps to two IP addresses — 204.74.115.1 and 2610:a1:1017::1.