`21centuryworkforce.com`

DNSSEC	⚠️ Not signed
A	50.19.230.255^{🇺🇸 Amazon50.19.128.0/17 EC2 IAD prefix}
		PTR	`ec2-50-19-230-255.compute-1.amazonaws.com`
NS	`pdns85.ultradns.com` ⭐
		A	2001:502:f3ff::79^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns85.ultradns.com`
		A	156.154.64.85^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`pdns85.ultradns.com`
NS	`pdns85.ultradns.biz`
		A	2610:a1:1015::79^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns85.ultradns.biz`
		A	156.154.66.85^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`pdns85.ultradns.biz`
NS	`pdns85.ultradns.net`
		A	2610:a1:1014::79^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns85.ultradns.net`
		A	156.154.65.85^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`pdns85.ultradns.net`
NS	`pdns85.ultradns.org`
		A	2001:502:4612::79^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns85.ultradns.org`
		A	156.154.67.85^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`pdns85.ultradns.org`
MX	`mail.eppg.com` ⭐
TXT	`v=spf1 mx -all`
SOA	`pdns85.ultradns.com`hostmaster@mheducation.com 2012-12-13 #16

`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=1777184091

Same first word

21centuryworkforce.com

DNS History

6 records (6 active, 0 former)

●NSpdns85.ultradns.biz2015-05-11 → 2026-04-26 · 2 obs

● 2015-05-11 14:38:18
● 2026-04-26 06:35:26

●NSpdns85.ultradns.com2015-05-11 → 2026-04-26 · 2 obs

● 2015-05-11 14:38:18
● 2026-04-26 06:35:26

●NSpdns85.ultradns.net2015-05-11 → 2026-04-26 · 2 obs

● 2015-05-11 14:38:18
● 2026-04-26 06:35:26

●NSpdns85.ultradns.org2015-05-11 → 2026-04-26 · 2 obs

● 2015-05-11 14:38:18
● 2026-04-26 06:35:26

●MXmail.eppg.com2015-05-11 → 2026-04-26 · 2 obs

● 2015-05-11 14:38:18
● 2026-04-26 06:35:26

●A50.19.230.2552015-05-11 → 2026-04-26 · 2 obs

● 2015-05-11 14:38:18
● 2026-04-26 06:35:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
21centuryworkforce.com	pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org	2 records

✅ Authoritative Response

Server:156.154.65.85

NS records: pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21centuryworkforce.com (unsigned zone)

⏱️ Timing

Total: 1393ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`50.19.230.255`
NS	4	`pdns85.ultradns.biz, pdns85.ultradns.com...`
MX	1	`mail.eppg.com (pri: 5)`
TXT	1	`v=spf1 mx -all`
SOA	1	`pdns85.ultradns.com hostmaster.mheducati`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (pdns85.ultradns.com, pdns85.ultradns.com)

Analysis

IP Addresses

21centuryworkforce.com points to a single IP: 50.19.230.255.

Other host names, for instance srascienceilabs.com, nevadamcgrawhillrti.com, srasnapshots.com, ec2-50-19-230-255.compute-1.amazonaws.com and sra4kids.com share IP numbers with 21centuryworkforce.com.

Name Servers

21centuryworkforce.com is delegated to four name servers: pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org.

21centuryworkforce.com at least partially shares its name servers with other domains, for instance istudyob.com, yourstudyguide.com, mheducation.com.br, pharmacotherapycasebook9e.com and mcgraw-hilleducation.app.

Host names with two IPs: pdns85.ultradns.biz points to 2610:a1:1015::79 and 156.154.66.85; pdns85.ultradns.com points to 2001:502:f3ff::79 and 156.154.64.85; pdns85.ultradns.net points to 2610:a1:1014::79 and 156.154.65.85; pdns85.ultradns.org points to 2001:502:4612::79 and 156.154.67.85.

Mail Servers

21centuryworkforce.com is served by a single mail server, mail.eppg.com.

21centuryworkforce.com uses the same mail server setup as other domains such as harrisonsmed.com, successinmath.com, lead21.net, panceasy.com and digitalzoology.com.

21centuryworkforce.com - robtex.com