opentool.com - dns.ninja
opentool.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 211.233.5.187🇰🇷 DACOM-NET211.233.0.0/18 contact noc@bora.net if necessary contact ysjeon7@bora.net if necessary | ||||||
| PTR | opentool.com | ||||||
| PTR | opentool.co.kr | ||||||
| NS | dns.happycgi.com ⭐ ⚠️ Not in zone NS records | ||||||
| A | 211.233.62.222🇰🇷 DACOM-NET211.233.0.0/18 contact noc@bora.net if necessary contact ysjeon7@bora.net if necessary | ||||||
| NS | dns1.zidc.net ⚠️ Not in zone NS records | ||||||
| A | 211.233.5.88🇰🇷 DACOM-NET211.233.0.0/18 contact noc@bora.net if necessary contact ysjeon7@bora.net if necessary | ||||||
| NS | opentool.com ⚠️ Not in parent delegation | ||||||
| A | 211.233.5.187🇰🇷 DACOM-NET211.233.0.0/18 contact noc@bora.net if necessary contact ysjeon7@bora.net if necessary | ||||||
| PTR | opentool.com | ||||||
| PTR | opentool.co.kr | ||||||
| MX | aspmx.daum.net ⭐ | ||||||
| A | 121.53.85.23🇰🇷 KAKAO-AY1121.53.80.0/21 Kakao | ||||||
| MX | alt.aspmx.daum.net(20) | ||||||
| A | 121.53.85.23🇰🇷 KAKAO-AY1121.53.80.0/21 Kakao | ||||||
| TXT | v=spf1 ip4:211.233.5.187 ip4:211.231.108.174 ip4:211.231.108.45 _spf.daum.net... | ||||||
| SOA | dns.happycgi.comroot@happycgi.com 2025-08-27 #8 | ||||||
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=1783207121 | ||||||
PTR for
NS for
opentool.com |
Same first word
Similar names
DNS History
17 records (6 active, 11 former)
●NSdns.happycgi.com2026-03-25 → 2026-07-04 · 3 obs
● 2026-03-25 21:08:40
● 2026-07-04 23:44:40
●NSdns1.zidc.net2026-03-25 → 2026-07-04 · 3 obs
● 2026-03-25 21:08:40
● 2026-07-04 23:44:40
○NSns.buydomains.com2008-03-19 → 2008-03-19 · 3 obs
○ 2015-06-18 16:16:00
○ 2026-07-04 23:44:40
○NSns.zidc.net2015-06-18 → 2017-09-11 · 5 obs
● 2015-06-18 16:16:00
● 2017-09-11 05:14:04
○ 2026-03-25 21:08:40
○ 2026-07-04 23:44:40
●NSopentool.com2015-06-18 → 2026-07-04 · 3 obs
● 2015-06-18 16:16:00
● 2026-07-04 23:44:40
○NSthis-domain-for-sale.com2008-03-19 → 2008-03-19 · 3 obs
○ 2015-06-18 16:16:00
○ 2026-07-04 23:44:40
●MXalt.aspmx.daum.net2017-09-11 → 2026-07-04 · 3 obs
● 2017-09-11 05:14:04
● 2026-07-04 23:44:40
○MXalt1.aspmx.l.google.com2015-06-18 → 2016-12-13 · 5 obs
● 2015-06-18 16:16:00
● 2016-12-13 09:24:36
○ 2017-09-11 05:14:04
○ 2026-07-04 23:44:40
○MXalt2.aspmx.l.google.com2015-06-18 → 2016-12-13 · 5 obs
● 2015-06-18 16:16:00
● 2016-12-13 09:24:36
○ 2017-09-11 05:14:04
○ 2026-07-04 23:44:40
●MXaspmx.daum.net2017-09-11 → 2026-07-04 · 3 obs
● 2017-09-11 05:14:04
● 2026-07-04 23:44:40
○MXaspmx.l.google.com2015-06-18 → 2016-12-13 · 5 obs
● 2015-06-18 16:16:00
● 2016-12-13 09:24:36
○ 2017-09-11 05:14:04
○ 2026-07-04 23:44:40
○MXaspmx2.googlemail.com2015-06-18 → 2016-12-13 · 5 obs
● 2015-06-18 16:16:00
● 2016-12-13 09:24:36
○ 2017-09-11 05:14:04
○ 2026-07-04 23:44:40
○MXaspmx3.googlemail.com2015-06-18 → 2016-12-13 · 5 obs
● 2015-06-18 16:16:00
● 2016-12-13 09:24:36
○ 2017-09-11 05:14:04
○ 2026-07-04 23:44:40
○MXdev.null2008-03-19 → 2008-03-19 · 3 obs
○ 2015-06-18 16:16:00
○ 2026-07-04 23:44:40
○A208.254.26.1322008-03-19 → 2008-03-19 · 3 obs
○ 2015-06-18 16:16:00
○ 2026-07-04 23:44:40
●A211.233.5.1872026-03-25 → 2026-07-04 · 3 obs
● 2026-03-25 21:08:40
● 2026-07-04 23:44:40
○A211.233.62.2212015-06-18 → 2017-09-11 · 5 obs
● 2015-06-18 16:16:00
● 2017-09-11 05:14:04
○ 2026-03-25 21:08:40
○ 2026-07-04 23:44:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, c.gtld-servers.net, e.gtld-servers.net, i.gtld-servers.net... | - |
| opentool.com | dns1.zidc.net, dns.happycgi.com | 1 record |
✅ Authoritative Response
Server:211.233.62.222
NS records: dns1.zidc.net, dns.happycgi.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for opentool.com (unsigned zone)
⏱️ Timing
Total: 1095ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 211.233.5.187 |
| NS | 1 | opentool.com |
| MX | 2 | ASPMX.daum.net (pri: 10), ALT.ASPMX.daum.net (pri: 20) |
| TXT | 1 | v=spf1 ip4:211.233.5.187 ip4:211.231.108 |
| SOA | 1 | dns.happycgi.com root.happycgi.com |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (dns.happycgi.com)
Analysis
Name Server Role
The NS records for opentool.com point back to opentool.com itself.
dns.happycgi.com, dns1.zidc.net and opentool.com regularly act as name servers together.
IP Addresses
opentool.com resolves to just one IP address, 211.233.5.187.
opentool.com shares its IP numbers with other host names like uend.com, uend.net and opentool.co.kr.
Name Servers
Authority for opentool.com is delegated across three name servers: opentool.com, dns.happycgi.com and dns1.zidc.net.
opentool.com partially shares its NS delegation with several other domains, including newsstore.co.kr, housemuch.net, kosjob.com and two others.
These name servers are regularly seen alongside ns.ccdom.net and ns.zidc.net as name servers.
opentool.com points to 211.233.5.187; dns.happycgi.com points to 211.233.62.222; dns1.zidc.net points to 211.233.5.88 — each hostname maps to exactly one IP address.
Mail Servers
opentool.com is served by two mail servers, aspmx.daum.net and alt.aspmx.daum.net.
Among the domains sharing a mail server setup with opentool.com are genuin.co.kr, gijige.kr, diamonds.co.kr and two others.
The MX records for opentool.com are at least partially shared with other domains, such as angelsoft.co.kr, yonginfc.co.kr, daedongpipe.co.kr and hshilla.com.
aspmx.daum.net directs to 121.53.85.23, as does alt.aspmx.daum.net — both hostnames resolve to that one IP address.
aspmx.daum.net along with alt.aspmx.daum.net each resolve to 121.53.85.23 IP addresses.