`grad-central.net`

DNSSEC	⚠️ Not signed
A	192.189.112.185^{🇺🇸 JOSTENS_INC192.189.112.0/24 Proxy Add for Charter Customer Jostens}
NS	`udns1.cscdns.net` ⭐
		A	2001:502:f3ff::201^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`edns1.ultradns.com`
			PTR	`udns1.cscdns.net`
			PTR	`udns1.cscdns.uk`
			PTR	`ns1.webipdns.com.au`
		A	204.74.66.1^{🇺🇸 MAINT-ID-12008204.74.66.0/24 Neustar}
			PTR	`ns1.alba.bank`
			PTR	`edns1.ultradns.com`
			PTR	`udns1.cscdns.net`
			PTR	`udns1.cscdns.uk`
			PTR	`ns1.webipdns.com.au`
NS	`udns2.cscdns.uk`
		A	2001:502:4612::201^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`udns2.cscdns.net`
			PTR	`edns1.ultradns.org`
			PTR	`udns2.cscdns.uk`
			PTR	`ns2.webipdns.com.au`
		A	204.74.111.1^{🇺🇸 MAINT-ID-12008204.74.111.0/24 Neustar}
			PTR	`ns2.alba.bank`
			PTR	`udns2.cscdns.net`
			PTR	`edns1.ultradns.org`
			PTR	`udns2.cscdns.uk`
			PTR	`ns2.webipdns.com.au`
MX	`p.webcom.ctmail.com` ⭐
		A	216.163.188.190
SOA	`udns1.cscdns.net`hostmaster@cscdns.net 2019-10-11 #7

`net`

	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=1774598317

Same first word

grad-central.net

grad-central.co.uk

grad-central.org

DNS History

8 records (4 active, 4 former)

○NSdns1.cscdns.net2016-09-25 → 2017-06-14 · 5 obs

○ 2016-03-11 18:14:30
● 2016-09-25 19:07:48
● 2017-06-14 22:17:14
○ 2026-02-21 15:24:10
○ 2026-03-27 08:17:06

○NSdns2.cscdns.net2016-09-25 → 2017-06-14 · 5 obs

○ 2016-03-11 18:14:30
● 2016-09-25 19:07:48
● 2017-06-14 22:17:14
○ 2026-02-21 15:24:10
○ 2026-03-27 08:17:06

○NSns63.worldnic.com2015-08-14 → 2016-03-11 · 4 obs

● 2015-08-14 07:31:22
● 2016-03-11 18:14:30
○ 2016-09-25 19:07:48
○ 2026-03-27 08:17:06

○NSns64.worldnic.com2015-08-14 → 2016-03-11 · 4 obs

● 2015-08-14 07:31:22
● 2016-03-11 18:14:30
○ 2016-09-25 19:07:48
○ 2026-03-27 08:17:06

●NSudns1.cscdns.net2026-02-21 → 2026-03-27 · 3 obs

○ 2017-06-14 22:17:14
● 2026-02-21 15:24:10
● 2026-03-27 08:17:06

●NSudns2.cscdns.uk2026-02-21 → 2026-03-27 · 3 obs

○ 2017-06-14 22:17:14
● 2026-02-21 15:24:10
● 2026-03-27 08:17:06

●MXp.webcom.ctmail.com2015-12-01 → 2026-03-27 · 2 obs

● 2015-12-01 05:15:12
● 2026-03-27 08:17:06

●A192.189.112.1852015-08-14 → 2026-03-27 · 2 obs

● 2015-08-14 07:31:22
● 2026-03-27 08:17:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	m.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net...	-
grad-central.net	udns1.cscdns.net, udns2.cscdns.uk	2 records

✅ Authoritative Response

Server:204.74.111.1

NS records: udns1.cscdns.net, udns2.cscdns.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for grad-central.net (unsigned zone)

⏱️ Timing

Total: 272ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`192.189.112.185`
NS	2	`udns1.cscdns.net, udns2.cscdns.uk`
MX	1	`p.webcom.ctmail.com (pri: 10)`
SOA	1	`udns1.cscdns.net hostmaster.cscdns.net`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (udns1.cscdns.net, udns1.cscdns.net)

Analysis

IP Addresses

grad-central.net points to IP number 192.189.112.185.

For instance, other host names customizedcollegiate.com, jostensrings.biz, yearbooks.jostens.com, www.jostens.us and www.shopjostens.tv share IP numbers with grad-central.net.

Name Servers

grad-central.net is delegated to two name servers: udns1.cscdns.net and udns2.cscdns.uk.

grad-central.net uses the same name server setup as other domains such as avionicsimulation-airbus.com, electroluxicon.net.br, legoworldshop.nl, electroluxappliance.net and theflipside.co.

grad-central.net shares name servers with other domains at least partially, for example electrolux.no, electrolux.ph, electroluxcoinwash.com, electrolux.lt and monrpac.ca.

Host names with two IP numbers:

udns1.cscdns.net points to 2001:502:f3ff::201 and 204.74.66.1; udns2.cscdns.uk points to 2001:502:4612::201 and 204.74.111.1.

Mail Servers

grad-central.net is handled by a single mail server, p.webcom.ctmail.com.

grad-central.net shares the same mail server setup as other domains, for instance steelcityfins.org, autogermanabmw.com, allcourthawaii.com, deartsstandards.org and theanimalhospitalonthegoldenstrip.com.

grad-central.net shares some mail servers with other domains, including maineyoungbirders.org, ks.kidsklik.com, jensvoldrisk.com and adenation.com.

p.webcom.ctmail.com points to a single IP: 216.163.188.190.

grad-central.net - robtex.com

grad-central.net

net