`doublecheckhvac.com`

DNSSEC	⚠️ Not signed
A	35.215.75.117^{🇺🇸 Google35.215.64.0/18}
		PTR	`117.75.215.35.bc.googleusercontent.com`
NS	`ns1.siteground.net` ⭐
		A	75.2.77.104^{🇺🇸 Amazon75.2.64.0/20}
			PTR	`ac4b097dbd0dd6307.awsglobalaccelerator.com`
NS	`ns2.siteground.net`
		A	99.83.229.113^{🇺🇸 Amazon99.83.224.0/20}
			PTR	`ac4b097dbd0dd6307.awsglobalaccelerator.com`
MX	`mx10.antispam.mailspamprotection.com` ⭐
		A	34.149.79.66^{🇺🇸 Google34.148.0.0/14}
			PTR	`66.79.149.34.bc.googleusercontent.com`
MX	`mx20.antispam.mailspamprotection.com`⁽²⁰⁾
		A	34.120.156.61^{🇺🇸 Google34.120.0.0/14}
			PTR	`61.156.120.34.bc.googleusercontent.com`
MX	`mx30.antispam.mailspamprotection.com`⁽³⁰⁾
		A	34.111.121.216^{🇺🇸 Google34.108.0.0/14}
			PTR	`216.121.111.34.bc.googleusercontent.com`
TXT	`v=spf1 +a +mx include:doublecheckhvac.com.spf.auto.dnssmarthost.net ~all`
SOA	`ns1.siteground.net`admins@siteground.com serial=82

`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

mail.doublecheckhvac.com

Same first word

doublecheckhvac.com

DNS History

10 records (6 active, 4 former)

●NSns1.siteground.net2026-02-18 → 2026-03-22 · 3 obs

○ 2017-07-04 19:13:30
● 2026-02-18 07:39:42
● 2026-03-22 14:53:00

●NSns2.siteground.net2026-02-18 → 2026-03-22 · 3 obs

○ 2017-07-04 19:13:30
● 2026-02-18 07:39:42
● 2026-03-22 14:53:00

○NSns53.domaincontrol.com2016-12-14 → 2017-07-04 · 4 obs

● 2016-12-14 00:27:00
● 2017-07-04 19:13:30
○ 2026-02-18 07:39:42
○ 2026-03-22 14:53:00

○NSns54.domaincontrol.com2016-12-14 → 2017-07-04 · 4 obs

● 2016-12-14 00:27:00
● 2017-07-04 19:13:30
○ 2026-02-18 07:39:42
○ 2026-03-22 14:53:00

○MXmail.doublecheckhvac.com2016-12-14 → 2017-07-04 · 4 obs

● 2016-12-14 00:27:00
● 2017-07-04 19:13:30
○ 2026-02-18 07:39:42
○ 2026-03-22 14:53:00

●MXmx10.antispam.mailspamprotection.com2026-02-18 → 2026-03-22 · 3 obs

○ 2017-07-04 19:13:30
● 2026-02-18 07:39:42
● 2026-03-22 14:53:00

●MXmx20.antispam.mailspamprotection.com2026-02-18 → 2026-03-22 · 3 obs

○ 2017-07-04 19:13:30
● 2026-02-18 07:39:42
● 2026-03-22 14:53:00

●MXmx30.antispam.mailspamprotection.com2026-02-18 → 2026-03-22 · 3 obs

○ 2017-07-04 19:13:30
● 2026-02-18 07:39:42
● 2026-03-22 14:53:00

○A23.229.211.932016-12-14 → 2017-07-04 · 4 obs

● 2016-12-14 00:27:00
● 2017-07-04 19:13:30
○ 2026-02-18 07:39:42
○ 2026-03-22 14:53:00

●A35.215.75.1172026-02-18 → 2026-03-22 · 3 obs

○ 2017-07-04 19:13:30
● 2026-02-18 07:39:42
● 2026-03-22 14:53:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
doublecheckhvac.com	ns1.siteground.net, ns2.siteground.net	-

✅ Authoritative Response

Server: 75.2.77.104

NS records: ns1.siteground.net, ns2.siteground.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for doublecheckhvac.com (unsigned zone)

⏱️ Timing

Total: 423ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`35.215.75.117`
NS	2	`ns1.siteground.net, ns2.siteground.net`
MX	3	`mx20.antispam.mailspamprotection.com (pr, mx10.antispam.mailspamprotection.com (pr...`
TXT	1	`v=spf1 +a +mx include:doublecheckhvac.co`
SOA	1	`ns1.siteground.net admins.siteground.com`

Analysis

Hierarchy

doublecheckhvac.com is parent of mail.doublecheckhvac.com.

IP Addresses

doublecheckhvac.com points to a single IP: 35.215.75.117.

Other host names, for instance healingmovement.us, vmhospital.com, truetherapy.org, opportunityinstitute.org and zixzag.com share IP numbers with doublecheckhvac.com.

Name Servers

doublecheckhvac.com's delegation is to two name servers ns1.siteground.net and ns2.siteground.net.

doublecheckhvac.com shares the same name server configuration as other domains, such as perfectum.agency, carygrovecomputers.com, redarrowgames.com, mythrite.com and directhearingservices.com.

doublecheckhvac.com at least partially shares its name servers with other domains, for instance imedview.com, playingcards.com.cn, topfooditaly.net, greenoak.academy and appartamenticattolica.info.

Host names with a single IP:

ns1.siteground.net resolves to 75.2.77.104.

ns2.siteground.net resolves to 99.83.229.113.

Mail Servers

doublecheckhvac.com is handled by three mail servers: mx10.antispam.mailspamprotection.com, mx20.antispam.mailspamprotection.com and mx30.antispam.mailspamprotection.com.

doublecheckhvac.com shares some mail servers with other domains, including trytyku.com, flnaacp.org, belmontfirearms.com, 3bmedia.com and heicowpdev.com.

Host names with one IP number:

mx10.antispam.mailspamprotection.com points to: 34.149.79.66.

mx20.antispam.mailspamprotection.com points to: 34.120.156.61.

mx30.antispam.mailspamprotection.com points to: 34.111.121.216.

doublecheckhvac.com - robtex.com