firstus.com - dns.ninja

`firstus.com`

DNSSEC	⚠️ Not signed
A	141.193.213.10^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
A	141.193.213.11^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
NS	`ns43.domaincontrol.com` ⭐
		A	2603:5:2152::16^{🇺🇸 GODADDY-DNS2603:5:2150::/44}
			PTR	`ns43.domaincontrol.com`
		A	97.74.101.22^{🇺🇸 GODADDY-DNS97.74.100.0/23}
			PTR	`ns43.domaincontrol.com`
NS	`ns44.domaincontrol.com`
		A	2603:5:2252::16^{🇺🇸 GODADDY-DNS2603:5:2250::/44}
			PTR	`ns44.domaincontrol.com`
		A	173.201.69.22^{🇺🇸 GODADDY-DNS173.201.68.0/23}
			PTR	`ns44.domaincontrol.com`
MX	`mx2-us1.ppe-hosted.com` ⭐
		A	67.231.154.163^{🇺🇸 Proofpoint67.231.154.0/24 Inc.}
			PTR	`mx2-us1.ppe-hosted.com`
		A	148.163.129.51^{🇺🇸 AS13916148.163.129.0/24 Proofpoint Inc.}
			PTR	`mx2-us1.ppe-hosted.com`
MX	`mx1-us1.ppe-hosted.com`⁽¹⁾
		A	67.231.154.162^{🇺🇸 Proofpoint67.231.154.0/24 Inc.}
			PTR	`mx1-us1.ppe-hosted.com`
		A	148.163.129.50^{🇺🇸 AS13916148.163.129.0/24 Proofpoint Inc.}
			PTR	`mx1-us1.ppe-hosted.com`
MX	`firstus-com.mail.protection.outlook.com`⁽⁹⁹⁾
		A	2a01:111:f403:c922::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl0pr05cu00501.inbound.protection.outlook.com`
		A	2a01:111:f403:f902::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl2pr04cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f90b::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn6pr04cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f90f::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sa9pr04cu00201.inbound.protection.outlook.com`
		A	52.101.8.34^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dm2pr04cu00102.inbound.protection.outlook.com`
		A	52.101.9.14^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl0pr03cu00206.inbound.protection.outlook.com`
		A	52.101.10.2^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn8pr03cu00202.inbound.protection.outlook.com`
		A	52.101.11.10^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sa9pr03cu00202.inbound.protection.outlook.com`
TXT	`v=spf1 include:mailgun.org include:spf.protection.outlook.com ip4:73.28.95.20...`
TXT	`MS=ms65681912`
SOA	`ns43.domaincontrol.com`dns@jomax.net 2026-03-05 #0

`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=1784826502

Same first word

firstus.biz

firstus.com

firstus.org

firstus.us

Similar names

russfit.ru

usfirst.info

usfirst.org

sfruits.com

ssfruit.com

usfirst.biz

surfist.com

DNS History

13 records (7 active, 6 former)

○NSns1.above.com2015-11-07 → 2017-04-03 · 4 obs

● 2015-11-07 04:57:56
● 2017-04-03 05:08:02
○ 2026-04-21 21:32:12
○ 2026-07-23 17:09:12

○NSns2.above.com2015-11-07 → 2017-04-03 · 4 obs

● 2015-11-07 04:57:56
● 2017-04-03 05:08:02
○ 2026-04-21 21:32:12
○ 2026-07-23 17:09:12

●NSns43.domaincontrol.com2026-04-21 → 2026-07-23 · 3 obs

○ 2017-04-03 05:08:02
● 2026-04-21 21:32:12
● 2026-07-23 17:09:12

●NSns44.domaincontrol.com2026-04-21 → 2026-07-23 · 3 obs

○ 2017-04-03 05:08:02
● 2026-04-21 21:32:12
● 2026-07-23 17:09:12

●MXfirstus-com.mail.protection.outlook.com2026-04-21 → 2026-07-23 · 3 obs

○ 2017-04-03 05:08:02
● 2026-04-21 21:32:12
● 2026-07-23 17:09:12

○MXmail.post-host.net2015-11-07 → 2016-08-07 · 4 obs

● 2015-11-07 04:57:56
● 2016-08-07 14:08:32
○ 2017-04-03 05:08:02
○ 2026-07-23 17:09:12

●MXmx1-us1.ppe-hosted.com2026-04-21 → 2026-07-23 · 3 obs

○ 2017-04-03 05:08:02
● 2026-04-21 21:32:12
● 2026-07-23 17:09:12

●MXmx2-us1.ppe-hosted.com2026-04-21 → 2026-07-23 · 3 obs

○ 2017-04-03 05:08:02
● 2026-04-21 21:32:12
● 2026-07-23 17:09:12

○MXmx92.m1bp.com2017-04-03 → 2017-04-03 · 4 obs

○ 2016-08-07 14:08:32
● 2017-04-03 05:08:02
○ 2026-04-21 21:32:12
○ 2026-07-23 17:09:12

○MXmx92.mb5p.com2017-04-03 → 2017-04-03 · 4 obs

○ 2016-08-07 14:08:32
● 2017-04-03 05:08:02
○ 2026-04-21 21:32:12
○ 2026-07-23 17:09:12

○A103.224.182.2452015-11-07 → 2017-04-03 · 4 obs

● 2015-11-07 04:57:56
● 2017-04-03 05:08:02
○ 2026-04-21 21:32:12
○ 2026-07-23 17:09:12

●A141.193.213.102026-04-21 → 2026-07-23 · 3 obs

○ 2017-04-03 05:08:02
● 2026-04-21 21:32:12
● 2026-07-23 17:09:12

●A141.193.213.112026-04-21 → 2026-07-23 · 3 obs

○ 2017-04-03 05:08:02
● 2026-04-21 21:32:12
● 2026-07-23 17:09:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
firstus.com	ns43.domaincontrol.com, ns44.domaincontrol.com	4 records

✅ Authoritative Response

Server:173.201.69.22

NS records: ns43.domaincontrol.com, ns44.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstus.com (unsigned zone)

⏱️ Timing

Total: 92ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`141.193.213.10, 141.193.213.11`
NS	2	`ns43.domaincontrol.com, ns44.domaincontrol.com`
MX	3	`mx2-us1.ppe-hosted.com (pri: 0), mx1-us1.ppe-hosted.com (pri: 1)...`
TXT	2	`v=spf1 include:mailgun.org include:spf.p, MS=ms65681912`
SOA	1	`ns43.domaincontrol.com dns.jomax.net`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns43.domaincontrol.com, ns43.domaincontrol.com, ns44.domaincontrol.com...)

Analysis

IP Addresses

firstus.com points to the IP addresses 141.193.213.10 and 141.193.213.11

briggsmarine.com, danmccaskey.com, theheathcote.net and two other host names share IP numbers with firstus.com.

Name Servers

DNS delegation for firstus.com points to two name servers: ns43.domaincontrol.com and ns44.domaincontrol.com.

firstus.com uses the same name servers as several other domains — among them socialme.mx, rudolphracing.com, myalevelup.com and two more.

firstus.com has partial name server overlap with other domains, including thecapn.biz.

ns43.domaincontrol.com directs to 97.74.101.22 and 2603:5:2152::16. ns44.domaincontrol.com directs to 173.201.69.22 and 2603:5:2252::16. Each host name carries two IP addresses.

Mail Servers

Incoming mail for firstus.com is delivered via three mail servers: mx1-us1.ppe-hosted.com, mx2-us1.ppe-hosted.com and firstus-com.mail.protection.outlook.com.

firstus.com has at least partial mail server overlap with other domains such as simply-kitchens-norfolk.com, pursepower.com, mocarenursing.com and two more.

Hostnames that resolve to 8 IP addresses:

firstus-com.mail.protection.outlook.com has IP addresses 52.101.8.34, 52.101.9.14 and 52.101.10.2, plus 5 other.

Hostnames that resolve to two IP addresses:

mx1-us1.ppe-hosted.com has two IP addresses: 67.231.154.162 and 148.163.129.50.

mx2-us1.ppe-hosted.com has two IP addresses: 67.231.154.163 and 148.163.129.51.