encyclopediaofmath.com - dns.ninja

`encyclopediaofmath.com`

DNSSEC	⚠️ Not signed
A	80.242.138.72^{🇩🇪 PLUSSERVER-ASN180.242.128.0/19 PlusServer GmbH}
		PTR	`springer-live16.xmachina.net`
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 2011-07-06 #11

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1781121573

Same first word

encyclopediaofmath.com

encyclopediaofmath.org

DNS History

15 records (7 active, 8 former)

○NSdns1.springer.com2015-06-15 → 2017-06-05 · 5 obs

○ 2008-03-14 03:37:46
● 2015-06-15 01:48:52
● 2017-06-05 07:04:12
○ 2026-03-21 15:57:32
○ 2026-06-10 20:11:00

○NSdns2.springer.com2015-06-15 → 2017-06-05 · 5 obs

○ 2008-03-14 03:37:46
● 2015-06-15 01:48:52
● 2017-06-05 07:04:12
○ 2026-03-21 15:57:32
○ 2026-06-10 20:11:00

○NSdns4.springer.com2015-06-15 → 2017-06-05 · 5 obs

○ 2008-03-14 03:37:46
● 2015-06-15 01:48:52
● 2017-06-05 07:04:12
○ 2026-03-21 15:57:32
○ 2026-06-10 20:11:00

○NSns17.domaincontrol.com2008-03-14 → 2008-03-14 · 3 obs

● 2008-03-14 03:37:46
○ 2015-06-15 01:48:52
○ 2026-06-10 20:11:00

○NSns18.domaincontrol.com2008-03-14 → 2008-03-14 · 3 obs

● 2008-03-14 03:37:46
○ 2015-06-15 01:48:52
○ 2026-06-10 20:11:00

●NSpdns1.ultradns.net2026-03-21 → 2026-06-10 · 3 obs

○ 2017-06-05 07:04:12
● 2026-03-21 15:57:32
● 2026-06-10 20:11:00

●NSpdns2.ultradns.net2026-03-21 → 2026-06-10 · 3 obs

○ 2017-06-05 07:04:12
● 2026-03-21 15:57:32
● 2026-06-10 20:11:00

●NSpdns3.ultradns.org2026-03-21 → 2026-06-10 · 3 obs

○ 2017-06-05 07:04:12
● 2026-03-21 15:57:32
● 2026-06-10 20:11:00

●NSpdns4.ultradns.org2026-03-21 → 2026-06-10 · 3 obs

○ 2017-06-05 07:04:12
● 2026-03-21 15:57:32
● 2026-06-10 20:11:00

●NSpdns5.ultradns.info2026-03-21 → 2026-06-10 · 3 obs

○ 2017-06-05 07:04:12
● 2026-03-21 15:57:32
● 2026-06-10 20:11:00

●NSpdns6.ultradns.co.uk2026-03-21 → 2026-06-10 · 3 obs

○ 2017-06-05 07:04:12
● 2026-03-21 15:57:32
● 2026-06-10 20:11:00

○MXmailstore1.secureserver.net2008-03-14 → 2008-03-14 · 3 obs

● 2008-03-14 03:37:46
○ 2015-06-15 01:48:52
○ 2026-06-10 20:11:00

○MXsmtp.secureserver.net2008-03-14 → 2008-03-14 · 3 obs

● 2008-03-14 03:37:46
○ 2015-06-15 01:48:52
○ 2026-06-10 20:11:00

○A68.178.232.1002008-03-14 → 2008-03-14 · 3 obs

● 2008-03-14 03:37:46
○ 2015-06-15 01:48:52
○ 2026-06-10 20:11:00

●A80.242.138.722015-06-15 → 2026-06-10 · 3 obs

○ 2008-03-14 03:37:46
● 2015-06-15 01:48:52
● 2026-06-10 20:11:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
encyclopediaofmath.com	pdns3.ultradns.org, pdns4.ultradns.org, pdns1.ultradns.net, pdns2.ultradns.net...	-

✅ Authoritative Response

Server:204.74.114.1

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for encyclopediaofmath.com (unsigned zone)

⏱️ Timing

Total: 295ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`80.242.138.72`
NS	6	`pdns1.ultradns.net, pdns2.ultradns.net...`
SOA	1	`pdns1.ultradns.net hostmaster.springer.c`

Analysis

IP Addresses

encyclopediaofmath.com resolves to just one IP address, 80.242.138.72.

Two other host names, along with springer-live16.xmachina.net, statprob.com and encyclopaediaofmath.com, also share IP numbers with encyclopediaofmath.com.

Name Servers

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

The name servers of encyclopediaofmath.com overlap at least partially with those of other domains — among them classmates.co, florida-vacation-rentals.com, expedia-voiture.com.fr and two more.

These name servers commonly appear in delegations together with pdns3.ultradns.org, pdns4.ultradns.org, pdns6.ultradns.co.uk and 6 other.

Host names that have two IP addresses:

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.