chemistjobs.com - robtex.com
chemistjobs.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 | chemistjobs.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.comfran@onedoorcloses.com 2026-05-01 #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.netnstld@verisign-grs.com serial=1778660821 | ||||||
MX for
chemistjobs.com |
Same first word
chemistjobs.com |
DNS History
11 records (6 active, 5 former)
●NSns1.1doorcloses.com2026-05-13 → 2026-05-13 · 3 obs
● 2026-05-13 08:42:44
● 2026-05-13 08:42:46
○NSns1.healthcarejobstore.com2015-06-18 → 2015-06-18 · 3 obs
○ 2015-11-01 01:43:36
○ 2026-05-13 08:42:46
●NSns1.onedoorcloses.com2015-11-01 → 2026-05-13 · 3 obs
● 2015-11-01 01:43:36
● 2026-05-13 08:42:46
●NSns2.1doorcloses.com2026-05-13 → 2026-05-13 · 3 obs
● 2026-05-13 08:42:44
● 2026-05-13 08:42:46
○NSns2.healthcarejobstore.com2015-06-18 → 2015-06-18 · 3 obs
○ 2015-11-01 01:43:36
○ 2026-05-13 08:42:46
●NSns2.onedoorcloses.com2015-11-01 → 2026-05-13 · 3 obs
● 2015-11-01 01:43:36
● 2026-05-13 08:42:46
○NSvps2171972015-06-18 → 2015-06-18 · 3 obs
○ 2015-11-01 01:43:36
○ 2026-05-13 08:42:46
●MXchemistjobs.com2015-11-01 → 2026-05-13 · 2 obs
● 2026-05-13 08:42:46
●A50.28.12.2032026-05-13 → 2026-05-13 · 3 obs
● 2026-05-13 08:42:44
● 2026-05-13 08:42:46
○A75.103.111.2102015-06-18 → 2015-06-18 · 3 obs
○ 2015-11-01 01:43:36
○ 2026-05-13 08:42:46
○A75.103.70.602015-11-01 → 2017-06-05 · 5 obs
● 2015-11-01 01:43:36
● 2017-06-05 12:35:20
○ 2026-05-13 08:42:44
○ 2026-05-13 08:42:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| chemistjobs.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 chemistjobs.com (unsigned zone)
⏱️ Timing
Total: 702ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 50.28.12.203 |
| NS | 2 | ns1.1doorcloses.com, ns2.1doorcloses.com |
| MX | 1 | chemistjobs.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
The mail server for chemistjobs.com is chemistjobs.com.
IP Addresses
chemistjobs.com maps to IP address 50.28.12.203.
Other host names, for instance hepatologistjobs.com, onedoorcloses.com, infectioncontroljobs.com, hiringgovernment.com and nurseeducatorjobs.com share IP numbers with chemistjobs.com.
Name Servers
chemistjobs.com is delegated to four name servers: ns1.1doorcloses.com, ns2.1doorcloses.com, ns1.onedoorcloses.com and ns2.onedoorcloses.com.
chemistjobs.com at least partially shares name servers with other domains such as hiringeducators.com, socialworkjobs.com, oralsurgeonjobs.com, hiringdental.com and primarycarejobs.com.
Host names with two IP numbers:
The host name ns1.onedoorcloses.com points to 50.28.12.203 and 75.103.70.60.
The host name 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
One mail server serves chemistjobs.com.
chemistjobs.com points to one IP number: 50.28.12.203.