`softwaredeveloperjobs.com`

DNSSEC	⚠️ Not signed
A	50.28.12.203^{🇺🇸 LiquidWeb50.28.0.0/18 Liquidweb Inc}
		PTR	`host.onedoorcloses.com`
NS	`ns1.1doorcloses.com` ⭐ ⚠️ Not in parent delegation
NS	`ns1.onedoorcloses.com` ⚠️ Not in zone NS records
		A	50.28.12.203^{🇺🇸 LiquidWeb50.28.0.0/18 Liquidweb Inc}
			PTR	`host.onedoorcloses.com`
		A	75.103.70.60^{🇺🇸 AS1499275.103.64.0/18}
NS	`ns2.1doorcloses.com` ⚠️ Not in parent delegation
NS	`ns2.onedoorcloses.com` ⚠️ Not in zone NS records
		A	50.28.12.203^{🇺🇸 LiquidWeb50.28.0.0/18 Liquidweb Inc}
			PTR	`host.onedoorcloses.com`
		A	75.103.71.60^{🇺🇸 AS1499275.103.64.0/18}
MX	`softwaredeveloperjobs.com` ⭐
		A	50.28.12.203^{🇺🇸 LiquidWeb50.28.0.0/18 Liquidweb Inc}
			PTR	`host.onedoorcloses.com`
TXT	`v=spf1 +a +mx +ip4:50.28.12.203 ~all`
SOA	`ns1.1doorcloses.com`fran@onedoorcloses.com 2025-12-29 #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=1778734591

MX for

softwaredeveloperjobs.com

Same first word

softwaredeveloperjobs.com

DNS History

15 records (6 active, 9 former)

●NSns1.1doorcloses.com2026-05-14 → 2026-05-14 · 3 obs

○ 2015-10-17 06:15:22
● 2026-05-14 05:22:00
● 2026-05-14 05:22:02

●NSns1.onedoorcloses.com2015-10-17 → 2026-05-14 · 3 obs

○ 2007-10-28 18:03:26
● 2015-10-17 06:15:22
● 2026-05-14 05:22:02

○NSns1.searchjobsusa.com2015-05-23 → 2015-05-23 · 4 obs

○ 2007-10-28 18:03:26
● 2015-05-23 17:21:40
○ 2015-10-17 06:15:22
○ 2026-05-14 05:22:02

●NSns2.1doorcloses.com2026-05-14 → 2026-05-14 · 3 obs

○ 2015-10-17 06:15:22
● 2026-05-14 05:22:00
● 2026-05-14 05:22:02

●NSns2.onedoorcloses.com2015-10-17 → 2026-05-14 · 3 obs

○ 2007-10-28 18:03:26
● 2015-10-17 06:15:22
● 2026-05-14 05:22:02

○NSns2.searchjobsusa.com2015-05-23 → 2015-05-23 · 4 obs

○ 2007-10-28 18:03:26
● 2015-05-23 17:21:40
○ 2015-10-17 06:15:22
○ 2026-05-14 05:22:02

○NSns3.webcontrolcenter.com2007-10-28 → 2007-10-28 · 3 obs

● 2007-10-28 18:03:26
○ 2015-05-23 17:21:40
○ 2026-05-14 05:22:02

○NSns4.webcontrolcenter.com2007-10-28 → 2007-10-28 · 3 obs

● 2007-10-28 18:03:26
○ 2015-05-23 17:21:40
○ 2026-05-14 05:22:02

○NSvps2118852015-05-23 → 2015-05-23 · 4 obs

○ 2007-10-28 18:03:26
● 2015-05-23 17:21:40
○ 2015-10-17 06:15:22
○ 2026-05-14 05:22:02

○MXmail31.webcontrolcenter.com2007-10-28 → 2007-10-28 · 3 obs

● 2007-10-28 18:03:26
○ 2015-05-23 17:21:40
○ 2026-05-14 05:22:02

●MXsoftwaredeveloperjobs.com2015-10-17 → 2026-05-14 · 3 obs

○ 2007-10-28 18:03:26
● 2015-10-17 06:15:22
● 2026-05-14 05:22:02

○A209.200.114.1832007-10-28 → 2007-10-28 · 3 obs

● 2007-10-28 18:03:26
○ 2015-05-23 17:21:40
○ 2026-05-14 05:22:02

●A50.28.12.2032026-05-14 → 2026-05-14 · 3 obs

○ 2017-04-18 19:43:44
● 2026-05-14 05:22:00
● 2026-05-14 05:22:02

○A75.103.119.532015-05-23 → 2015-05-23 · 4 obs

○ 2007-10-28 18:03:26
● 2015-05-23 17:21:40
○ 2015-10-17 06:15:22
○ 2026-05-14 05:22:02

○A75.103.70.602015-10-17 → 2017-04-18 · 5 obs

○ 2007-10-28 18:03:26
● 2015-10-17 06:15:22
● 2017-04-18 19:43:44
○ 2026-05-14 05:22:00
○ 2026-05-14 05:22:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, l.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net...	-
softwaredeveloperjobs.com	ns2.onedoorcloses.com, ns1.onedoorcloses.com	2 records

✅ Authoritative Response

Server:50.28.12.203

NS records: ns2.onedoorcloses.com, ns1.onedoorcloses.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for softwaredeveloperjobs.com (unsigned zone)

⏱️ Timing

Total: 243ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`50.28.12.203`
NS	2	`ns2.1doorcloses.com, ns1.1doorcloses.com`
MX	1	`softwaredeveloperjobs.com (pri: 0)`
TXT	1	`v=spf1 +a +mx +ip4:50.28.12.203 ~all`
SOA	1	`ns1.1doorcloses.com fran.onedoorcloses.c`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns2.onedoorcloses.com, ns1.onedoorcloses.com)

Analysis

Mail Server Role

softwaredeveloperjobs.com serves as the mail server for softwaredeveloperjobs.com.

IP Addresses

softwaredeveloperjobs.com resolves to a single IP address: 50.28.12.203.

Other host names including admissionsjobs.com, hiringnonprofit.com, pharmacydirectorjobs.com, chemistjobs.com and healthpromotionjobs.com share IP numbers with softwaredeveloperjobs.com.

Name Servers

softwaredeveloperjobs.com is delegated to four name servers: ns1.1doorcloses.com, ns2.1doorcloses.com, ns1.onedoorcloses.com and ns2.onedoorcloses.com.

softwaredeveloperjobs.com at least partially shares name servers with other domains, including businesseducationjobs.com, hmojobs.com, medicalengineerjobs.com, hiringbanking.com and hiringalternativehealth.com.

Host names with two IP numbers:

Host ns1.onedoorcloses.com points to 50.28.12.203 and 75.103.70.60

Host ns2.onedoorcloses.com points to 50.28.12.203 and 75.103.71.60

Host names that point to 50.28.12.203 are ns1.onedoorcloses.com and ns2.onedoorcloses.com

Mail Servers

A single mail server handles softwaredeveloperjobs.com.

softwaredeveloperjobs.com points to a single IP: 50.28.12.203.

softwaredeveloperjobs.com - robtex.com