`comcasttraining.com`

DNSSEC	🔒 Signed (DS record present)
A	54.164.56.153^{🇺🇸 Amazon54.164.0.0/15 EC2 IAD prefix}
		PTR	`ec2-54-164-56-153.compute-1.amazonaws.com`
NS	`ns.comcasttraining.com` ⭐
		A	68.87.72.244^{🇺🇸 COMCAST-IBONE68.80.0.0/13 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054}
			PTR	`dns105.comcast.net`
NS	`dns101.comcast.net`
		A	2001:558:fe23:8:69:252:250:103^{🇺🇸 AS332872001:558:fe23::/48}
			PTR	`dns101.comcast.net`
		A	69.252.250.103^{🇺🇸 COMCAST-IBONE69.240.0.0/12 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054}
			PTR	`dns101.comcast.net`
NS	`dns102.comcast.net`
		A	2001:558:1004:7:68:87:85:132^{🇺🇸 COMCAST-IBONE2001:558::/29 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054}
			PTR	`dns102.comcast.net`
		A	68.87.85.132^{🇺🇸 COMCAST-IBONE68.80.0.0/13 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054}
			PTR	`dns102.comcast.net`
NS	`dns103.comcast.net`
		A	2001:558:1014:c:68:87:76:228^{🇺🇸 COMCAST-IBONE2001:558::/29 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054}
			PTR	`dns103.comcast.net`
		A	68.87.76.228^{🇺🇸 COMCAST-IBONE68.80.0.0/13 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054}
			PTR	`dns103.comcast.net`
NS	`dns104.comcast.net`
		A	2001:558:100a:5:68:87:68:244^{🇺🇸 AS77252001:558:100a::/48}
			PTR	`dns104.comcast.net`
		A	68.87.68.244^{🇺🇸 COMCAST-IBONE68.80.0.0/13 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054}
			PTR	`dns104.comcast.net`
NS	`dns105.comcast.net`
		A	2001:558:100e:5:68:87:72:244^{🇺🇸 COMCAST-IBONE2001:558::/29 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054}
			PTR	`dns105.comcast.net`
		A	68.87.72.244^{🇺🇸 COMCAST-IBONE68.80.0.0/13 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054}
			PTR	`dns105.comcast.net`
MX	`mail.messaging.microsoft.com` ⭐
TXT	`v=spf1 ip4:192.149.93.109 ip4:192.149.93.117 ip4:192.149.93.96 ip4:62.189.59....`
SOA	`ns.comcasttraining.com`dnsmaster@comcasttraining.com 2008-11-14 #56

`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=1778708741

Subdomains

ns.comcasttraining.com

Same first word

comcasttraining.com

DNS History

9 records (8 active, 1 former)

●NSdns101.comcast.net2015-08-25 → 2026-05-13 · 2 obs

● 2015-08-25 08:45:00
● 2026-05-13 21:48:02

●NSdns102.comcast.net2015-08-25 → 2026-05-13 · 2 obs

● 2015-08-25 08:45:00
● 2026-05-13 21:48:02

●NSdns103.comcast.net2015-08-25 → 2026-05-13 · 2 obs

● 2015-08-25 08:45:00
● 2026-05-13 21:48:02

●NSdns104.comcast.net2015-08-25 → 2026-05-13 · 2 obs

● 2015-08-25 08:45:00
● 2026-05-13 21:48:02

●NSdns105.comcast.net2015-08-25 → 2026-05-13 · 2 obs

● 2015-08-25 08:45:00
● 2026-05-13 21:48:02

●NSns.comcasttraining.com2015-08-25 → 2026-05-13 · 2 obs

● 2015-08-25 08:45:00
● 2026-05-13 21:48:02

●MXmail.messaging.microsoft.com2015-08-25 → 2026-05-13 · 2 obs

● 2015-08-25 08:45:00
● 2026-05-13 21:48:02

●A54.164.56.1532017-03-15 → 2026-05-13 · 3 obs

○ 2016-06-22 18:11:38
● 2017-03-15 09:18:10
● 2026-05-13 21:48:02

○A54.86.206.1982015-08-25 → 2016-06-22 · 4 obs

● 2015-08-25 08:45:00
● 2016-06-22 18:11:38
○ 2017-03-15 09:18:10
○ 2026-05-13 21:48:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
comcasttraining.com	dns101.comcast.net, dns102.comcast.net, dns103.comcast.net, dns104.comcast.net...	-

✅ Authoritative Response

Server:68.87.72.244

NS records: dns101.comcast.net, dns102.comcast.net, dns103.comcast.net, dns104.comcast.net, dns105.comcast.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 651ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`54.164.56.153`
NS	5	`dns103.comcast.net, dns105.comcast.net...`
MX	1	`mail.messaging.microsoft.com (pri: 10)`
TXT	1	`v=spf1 ip4:192.149.93.109 ip4:192.149.93`
SOA	1	`ns.comcasttraining.com dnsmaster.comcast`

Analysis

Hierarchy

comcasttraining.com is the parent of ns.comcasttraining.com.

IP Addresses

comcasttraining.com resolves to one IP number: 54.164.56.153.

Name Servers

comcasttraining.com is delegated to six name servers: ns.comcasttraining.com, dns101.comcast.net, dns102.comcast.net, dns103.comcast.net, dns104.comcast.net and dns105.comcast.net.

comcasttraining.com at least partially shares name servers with other domains, for instance 27.15.24.in-addr.arpa, 110.222.98.in-addr.arpa, comcastnet.com, 224.111.76.in-addr.arpa and 2.204.98.in-addr.arpa.

These name servers are commonly used with ns1.comcastbusiness.net, ns2.comcastbusiness.net, ns3.comcastbusiness.net, ns.comcastnet.com and ns.candyscout.org.

Host names with two IP numbers:

dns101.comcast.net points to 2001:558:fe23:8:69:252:250:103 and 69.252.250.103.

dns102.comcast.net points to 2001:558:1004:7:68:87:85:132 and 68.87.85.132.

dns103.comcast.net points to 2001:558:1014:c:68:87:76:228 and 68.87.76.228.

dns104.comcast.net points to 2001:558:100a:5:68:87:68:244 and 68.87.68.244.

dns105.comcast.net points to 2001:558:100e:5:68:87:72:244 and 68.87.72.244.

Host names with one IP number:

ns.comcasttraining.com points to 68.87.72.244.

Host names that point to 68.87.72.244: dns105.comcast.net and ns.comcasttraining.com.

Mail Servers

comcasttraining.com is handled by a single mail server, mail.messaging.microsoft.com.

comcasttraining.com shares the same mail server setup as other domains, for instance animax-hongkong.com, msnbc.nl, westernunion.hn, motorola.org.cn and medtronic.ph.

comcasttraining.com shares some mail servers with other domains, at least partially, for instance hvcare.dk, spintopgames.com, eesinfo.com, sdcldn.com and fleetcostcare.com.

comcasttraining.com - robtex.com