`tcdapps.com`

DNSSEC	⚠️ Not signed
NS	`ns-329.awsdns-41.com` ⭐
		A	2600:9000:5301:4900::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-329.awsdns-41.com`
		A	205.251.193.73^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-329.awsdns-41.com`
NS	`ns-1189.awsdns-20.org`
		A	2600:9000:5304:a500::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1189.awsdns-20.org`
		A	205.251.196.165^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1189.awsdns-20.org`
NS	`ns-1867.awsdns-41.co.uk`
		A	2600:9000:5307:4b00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1867.awsdns-41.co.uk`
		A	205.251.199.75^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1867.awsdns-41.co.uk`
NS	`ns-902.awsdns-48.net`
		A	2600:9000:5303:8600::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-902.awsdns-48.net`
		A	205.251.195.134^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-902.awsdns-48.net`
SOA	`ns-329.awsdns-41.com`awsdns-hostmaster@amazon.com serial=1

`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=1771291435

Subdomains

optumpdf.tcdapps.com

Same first word

tcdapps.com

Similar names

dtcapps.com

cdtapps.com

dtcapps.net

tdcapps.com

DNS History

8 records (4 active, 4 former)

●NSns-1189.awsdns-20.org2026-03-10 → 2026-03-14 · 3 obs

○ 2017-03-28 16:33:00
● 2026-03-10 17:06:42
● 2026-03-14 03:36:04

●NSns-1867.awsdns-41.co.uk2026-03-10 → 2026-03-14 · 3 obs

○ 2017-03-28 16:33:00
● 2026-03-10 17:06:42
● 2026-03-14 03:36:04

●NSns-329.awsdns-41.com2026-03-10 → 2026-03-14 · 3 obs

○ 2017-03-28 16:33:00
● 2026-03-10 17:06:42
● 2026-03-14 03:36:04

●NSns-902.awsdns-48.net2026-03-10 → 2026-03-14 · 3 obs

○ 2017-03-28 16:33:00
● 2026-03-10 17:06:42
● 2026-03-14 03:36:04

○NSns1.justhost.com2015-07-16 → 2017-03-28 · 4 obs

● 2015-07-16 05:29:02
● 2017-03-28 16:33:00
○ 2026-03-10 17:06:42
○ 2026-03-14 03:36:04

○NSns2.justhost.com2015-07-16 → 2017-03-28 · 4 obs

● 2015-07-16 05:29:02
● 2017-03-28 16:33:00
○ 2026-03-10 17:06:42
○ 2026-03-14 03:36:04

○MXmail.tcdapps.com2015-07-16 → 2017-03-28 · 4 obs

● 2015-07-16 05:29:02
● 2017-03-28 16:33:00
○ 2026-03-10 17:06:42
○ 2026-03-14 03:36:04

○A173.254.28.1382015-07-16 → 2017-03-28 · 4 obs

● 2015-07-16 05:29:02
● 2017-03-28 16:33:00
○ 2026-03-10 17:06:42
○ 2026-03-14 03:36:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
tcdapps.com	ns-329.awsdns-41.com, ns-902.awsdns-48.net, ns-1189.awsdns-20.org, ns-1867.awsdns-41.co.uk	1 record

✅ Authoritative Response

Server: 205.251.199.75

NS records: ns-329.awsdns-41.com, ns-902.awsdns-48.net, ns-1189.awsdns-20.org, ns-1867.awsdns-41.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tcdapps.com (unsigned zone)

⏱️ Timing

Total: 472ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns-1189.awsdns-20.org, ns-1867.awsdns-41.co.uk...`
SOA	1	`ns-329.awsdns-41.com awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-329.awsdns-41.com)

Analysis

Hierarchy

tcdapps.com is a parent of optumpdf.tcdapps.com.

Name Servers

tcdapps.com is delegated to four name servers: ns-329.awsdns-41.com, ns-902.awsdns-48.net, ns-1189.awsdns-20.org and ns-1867.awsdns-41.co.uk.

At least part of the name servers for tcdapps.com are shared with other domains, for instance kobe-wing.com, nubiant.com, tegna.careers, nssghonline.com and glb21pkgr.com.