`centralchicago.com`

DNSSEC	⚠️ Not signed
A	20.49.97.16^{🇺🇸 Microsoft20.48.0.0/12}
NS	`auth1.dns.expedient.com` ⭐
		A	209.166.168.15^{🇺🇸 E-xpedient209.166.128.0/18 Pittsburgh}
			PTR	`auth1.dns.pitdc1.stargate.net`
NS	`auth2.dns.expedient.com`
		A	216.183.191.12^{🇺🇸 E-xpedient216.183.160.0/19}
			PTR	`auth2.dns.bosdc1.expedient.net`
NS	`auth3.dns.expedient.com`
		A	207.54.143.204^{🇺🇸 E-xpedient207.54.128.0/18 Cleveland}
			PTR	`auth3.dns.expedient.com`
MX	`us-smtp-inbound-1.mimecast.com` ⭐
		A	170.10.128.141^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.221^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.242^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.141^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.221^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.242^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
MX	`us-smtp-inbound-2.mimecast.com` ⭐
		A	170.10.128.141^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.221^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.242^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.141^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.221^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.242^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
TXT	`MS=ms74306999`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
SOA	`auth1.dns.expedient.com`hostmaster@expedient.com 2013-08-15 #2

`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

DNS History

9 records (6 active, 3 former)

●NSauth1.dns.expedient.com2015-06-28 → 2026-03-14 · 2 obs

● 2015-06-28 10:36:26
● 2026-03-14 05:49:30

●NSauth2.dns.expedient.com2015-06-28 → 2026-03-14 · 2 obs

● 2015-06-28 10:36:26
● 2026-03-14 05:49:30

●NSauth3.dns.expedient.com2015-06-28 → 2026-03-14 · 2 obs

● 2015-06-28 10:36:26
● 2026-03-14 05:49:30

○MXcentralchicago.com.inbound10.mxlogic.net2015-06-28 → 2016-04-22 · 4 obs

● 2015-06-28 10:36:26
● 2016-04-22 22:43:40
○ 2016-11-25 19:15:56
○ 2026-03-14 05:49:30

○MXcentralchicago.com.inbound10.mxlogicmx.net2015-06-28 → 2016-04-22 · 4 obs

● 2015-06-28 10:36:26
● 2016-04-22 22:43:40
○ 2016-11-25 19:15:56
○ 2026-03-14 05:49:30

●MXus-smtp-inbound-1.mimecast.com2016-11-25 → 2026-03-14 · 3 obs

○ 2016-04-22 22:43:40
● 2016-11-25 19:15:56
● 2026-03-14 05:49:30

●MXus-smtp-inbound-2.mimecast.com2016-11-25 → 2026-03-14 · 3 obs

○ 2016-04-22 22:43:40
● 2016-11-25 19:15:56
● 2026-03-14 05:49:30

○A184.173.116.1182015-06-28 → 2017-06-15 · 4 obs

● 2015-06-28 10:36:26
● 2017-06-15 16:29:50
○ 2026-03-14 05:49:28
○ 2026-03-14 05:49:30

●A20.49.97.162026-03-14 → 2026-03-14 · 3 obs

○ 2017-06-15 16:29:50
● 2026-03-14 05:49:28
● 2026-03-14 05:49:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
centralchicago.com	auth1.dns.expedient.com, auth2.dns.expedient.com, auth3.dns.expedient.com	3 records

✅ Authoritative Response

Server: 207.54.143.204

NS records: auth1.dns.expedient.com, auth2.dns.expedient.com, auth3.dns.expedient.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for centralchicago.com (unsigned zone)

⏱️ Timing

Total: 179ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`20.49.97.16`
NS	3	`auth1.dns.expedient.com, auth3.dns.expedient.com...`
MX	2	`us-smtp-inbound-2.mimecast.com (pri: 10), us-smtp-inbound-1.mimecast.com (pri: 10)`
TXT	2	`v=spf1 include:spf.protection.outlook.co, MS=ms74306999`
SOA	1	`auth1.dns.expedient.com hostmaster.exped`

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (auth1.dns.expedient.com, auth2.dns.expedient.com, auth3.dns.expedient.com)

Analysis

IP Addresses

centralchicago.com points to an IP address: 20.49.97.16.

other host names include allsunshinecranerental.com, bluesoftti.com, summer.schweitzer.com, dawescrane.com and allerection.com; they share IP numbers with centralchicago.com.

Name Servers

centralchicago.com is delegated to three name servers auth1.dns.expedient.com, auth2.dns.expedient.com and auth3.dns.expedient.com.

centralchicago.com at least partially shares name servers with other domains, for instance 58.37.216.in-addr.arpa, 152.40.208.in-addr.arpa, 251.255.64.in-addr.arpa, 137.190.209.in-addr.arpa and 247.40.208.in-addr.arpa.

these name servers are commonly used with auth5.dns.expedient.com, auth4.dns.expedient.com, ns1.nframe.com, ns2.nframe.com, auth6.dns.expedient.com, ns1.abs.net, ns2.abs.net, ns1.apk.net, ns2.apk.net and ns-prime.charm.net.

Host names with one IP:

auth1.dns.expedient.com points to 209.166.168.15; auth2.dns.expedient.com points to 216.183.191.12; auth3.dns.expedient.com points to 207.54.143.204.

Mail Servers

centralchicago.com is handled by two mail servers: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.

centralchicago.com uses the same mail server setup as other domains, for instance cityofkyle.com, youngengineers.com, tcirood.com, spadafarms.com and daceventures.com.

centralchicago.com shares at least partially some mail servers with other domains, for instance gpsfx.com, datatrends.net, curizon.com, hirtlecallaghan.com and onyxrenewables.com.