`expressmaintenance.com`

DNSSEC	⚠️ Not signed
A	204.17.39.158^{🇺🇸 AS22772204.17.32.0/19 1855 N 6th Ave Tucson AZ 85705 United States}
NS	`ns2.expressmaintenance.com` ⭐ ⚠️ Not in parent delegation
		A	204.17.39.158^{🇺🇸 AS22772204.17.32.0/19 1855 N 6th Ave Tucson AZ 85705 United States}
NS	`ns1.expressmaintenance.com` ⚠️ Not in parent delegation
		A	204.17.39.158^{🇺🇸 AS22772204.17.32.0/19 1855 N 6th Ave Tucson AZ 85705 United States}
NS	`ns3.blackbeltdatacenter.com` ⚠️ Not in zone NS records
		A	204.17.39.158^{🇺🇸 AS22772204.17.32.0/19 1855 N 6th Ave Tucson AZ 85705 United States}
NS	`ns4.blackbeltdatacenter.com` ⚠️ Not in zone NS records
		A	204.17.39.158^{🇺🇸 AS22772204.17.32.0/19 1855 N 6th Ave Tucson AZ 85705 United States}
MX	`expressmaintenance-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::3^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj0pr03cu01703.inbound.protection.outlook.com`
		A	2a01:111:f403:f905::4^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-dm2pr04cu00404.inbound.protection.outlook.com`
		A	2a01:111:f403:f909::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn6pr04cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:f912::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-cy5pr03cu00200.inbound.protection.outlook.com`
		A	52.101.10.5^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn6pr04cu00105.inbound.protection.outlook.com`
		A	52.101.50.10^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-mw2pr02cu00502.inbound.protection.outlook.com`
		A	52.101.50.13^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-mw2pr02cu00605.inbound.protection.outlook.com`
		A	52.101.194.19^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch5pr02cu00303.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com include:5436876.spf10.hubspotemail....`
TXT	`google-site-verification=8uN4tUnqIgLr7Q-TMwidbAQnde9o1f-iWmL5YJbf0T0`
TXT	`MS=ms24556207`
SOA	`ns2.expressmaintenance.com`jacrowder@blackbeltdatacenter.com 2026-04-01 #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=1785414557

Previously MX for

expressmaintenance.com

Subdomains

ns1.expressmaintenance.com

ns2.expressmaintenance.com

Same first word

expressmaintenance.com

DNS History

16 records (6 active, 10 former)

○NSns.inmotionhosting.com2017-02-20 → 2017-02-20 · 4 obs

○ 2016-06-30 03:46:00
● 2017-02-20 03:27:18
○ 2020-01-16 17:42:22
○ 2026-07-30 12:48:32

○NSns1-expresstech.webserversystems.com2016-03-01 → 2016-06-30 · 5 obs

○ 2015-11-20 21:25:02
● 2016-03-01 15:23:00
● 2016-06-30 03:46:00
○ 2017-02-20 03:27:18
○ 2026-07-30 12:48:32

●NSns1.expressmaintenance.com2020-01-16 → 2026-07-30 · 3 obs

○ 2017-02-20 03:27:18
● 2020-01-16 17:42:22
● 2026-07-30 12:48:32

○NSns1.expresstechnology.com2015-07-18 → 2015-11-20 · 4 obs

● 2015-07-18 18:50:02
● 2015-11-20 21:25:02
○ 2016-03-01 15:23:00
○ 2026-07-30 12:48:32

○NSns2-expresstech.webserversystems.com2016-03-01 → 2016-06-30 · 5 obs

○ 2015-11-20 21:25:02
● 2016-03-01 15:23:00
● 2016-06-30 03:46:00
○ 2017-02-20 03:27:18
○ 2026-07-30 12:48:32

●NSns2.expressmaintenance.com2020-01-16 → 2026-07-30 · 3 obs

○ 2017-02-20 03:27:18
● 2020-01-16 17:42:22
● 2026-07-30 12:48:32

○NSns2.expresstechnology.com2015-07-18 → 2015-11-20 · 4 obs

● 2015-07-18 18:50:02
● 2015-11-20 21:25:02
○ 2016-03-01 15:23:00
○ 2026-07-30 12:48:32

○NSns2.inmotionhosting.com2017-02-20 → 2017-02-20 · 4 obs

○ 2016-06-30 03:46:00
● 2017-02-20 03:27:18
○ 2020-01-16 17:42:22
○ 2026-07-30 12:48:32

●NSns3.blackbeltdatacenter.com2026-03-01 → 2026-07-30 · 3 obs

○ 2020-01-16 17:42:22
● 2026-03-01 12:45:56
● 2026-07-30 12:48:32

●NSns4.blackbeltdatacenter.com2026-03-01 → 2026-07-30 · 3 obs

○ 2020-01-16 17:42:22
● 2026-03-01 12:45:56
● 2026-07-30 12:48:32

●MXexpressmaintenance-com.mail.protection.outlook.com2020-01-16 → 2026-07-30 · 3 obs

○ 2017-02-20 03:27:18
● 2020-01-16 17:42:22
● 2026-07-30 12:48:32

○MXexpressmaintenance.com2015-07-18 → 2017-02-20 · 4 obs

● 2015-07-18 18:50:02
● 2017-02-20 03:27:18
○ 2020-01-16 17:42:22
○ 2026-07-30 12:48:32

○A198.154.193.582015-07-18 → 2015-11-20 · 4 obs

● 2015-07-18 18:50:02
● 2015-11-20 21:25:02
○ 2016-03-01 15:23:00
○ 2026-07-30 12:48:32

●A204.17.39.1582020-01-16 → 2026-07-30 · 3 obs

○ 2017-02-20 03:27:18
● 2020-01-16 17:42:22
● 2026-07-30 12:48:32

○A216.247.238.1522016-03-01 → 2016-06-30 · 5 obs

○ 2015-11-20 21:25:02
● 2016-03-01 15:23:00
● 2016-06-30 03:46:00
○ 2017-02-20 03:27:18
○ 2026-07-30 12:48:32

○A74.124.200.622017-02-20 → 2017-02-20 · 4 obs

○ 2016-06-30 03:46:00
● 2017-02-20 03:27:18
○ 2020-01-16 17:42:22
○ 2026-07-30 12:48:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
expressmaintenance.com	ns3.blackbeltdatacenter.com, ns4.blackbeltdatacenter.com	2 records

✅ Authoritative Response

Server:204.17.39.158

NS records: ns3.blackbeltdatacenter.com, ns4.blackbeltdatacenter.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for expressmaintenance.com (unsigned zone)

⏱️ Timing

Total: 276ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`204.17.39.158`
NS	2	`ns1.expressmaintenance.com, ns2.expressmaintenance.com`
MX	1	`expressmaintenance-com.mail.protection.o`
TXT	3	`MS=ms24556207, google-site-verification=8uN4tUnqIgLr7Q-...`
SOA	1	`ns2.expressmaintenance.com jacrowder.bla`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns3.blackbeltdatacenter.com, ns4.blackbeltdatacenter.com)

Analysis

Hierarchy

The parent domain of ns1.expressmaintenance.com and ns2.expressmaintenance.com is expressmaintenance.com.

IP Addresses

expressmaintenance.com directs to one IP number, which is 204.17.39.158.

Among the host names that share IP numbers with expressmaintenance.com are ns3.blackbeltdatacenter.com, blackbeltdatacenter.com, mail.blackbeltdatacenter.com and two others.

Name Servers

The domain expressmaintenance.com is delegated to these four name servers: ns3.blackbeltdatacenter.com, ns4.blackbeltdatacenter.com, ns1.expressmaintenance.com and ns2.expressmaintenance.com.

There is an overlap in name servers between expressmaintenance.com and other domains, for example expresstechnology.com, mas.systems and blackbeltdatacenter.com

The name servers ns.mas.systems, ns1.blackbeltdatacenter.com and ns2.blackbeltdatacenter.com are often found in combination with these name servers.

ns3.blackbeltdatacenter.com, ns4.blackbeltdatacenter.com, ns1.expressmaintenance.com and ns2.expressmaintenance.com all direct traffic to the IP address 204.17.39.158.

ns3.blackbeltdatacenter.com, ns4.blackbeltdatacenter.com, ns1.expressmaintenance.com and ns2.expressmaintenance.com each direct to 204.17.39.158.

Mail Servers

expressmaintenance.com routes its mail through a single mail server, expressmaintenance-com.mail.protection.outlook.com.

expressmaintenance-com.mail.protection.outlook.com directs to 8 IP numbers, including 52.101.10.5, 52.101.50.10 and 52.101.50.13, along with 5 other.

expressmaintenance.com - robtex.com