flexstudy.co.kr - dns.ninja
flexstudy.co.kr
| DNSSEC | ⚠️ Not signed | ||||||
| A | 49.247.8.88🇰🇷 SMILESERV-AS-KR49.247.0.0/17 Proxy-Registered Route Object by LGUPLUS(AS3786) | ||||||
| NS | ns1.gabia.co.kr ⭐ | ||||||
| A | 20.200.205.248🇰🇷 Microsoft20.192.0.0/10 | ||||||
| NS | ns.gabia.co.kr | ||||||
| A | 43.201.170.100🇰🇷 Amazon43.200.0.0/14 EC2 ICN Prefix | ||||||
| PTR | ec2-43-201-170-100.ap-northeast-2.compute.amazonaws.com | ||||||
| NS | ns.gabia.net | ||||||
| A | 121.78.117.39🇰🇷 GABIA-AS-KR121.78.117.0/24 Transit customer route announce | ||||||
| PTR | ns1.gabia.co.kr | ||||||
| A | 211.234.124.90🇰🇷 DACOM-NET211.234.0.0/17 contact jblee@aunet.nm.kr if necessary contact ojupark@aunet.nm.kr if necessary | ||||||
| MX | mxa.mailgun.org ⭐ | ||||||
| A | 34.36.182.139🇺🇸 Google34.32.0.0/11 | ||||||
| PTR | 139.182.36.34.bc.googleusercontent.com | ||||||
| MX | mxb.mailgun.org ⭐ | ||||||
| A | 34.149.254.5🇺🇸 Google34.148.0.0/14 | ||||||
| PTR | 5.254.149.34.bc.googleusercontent.com | ||||||
| TXT | v=spf1 include:mailgun.org ~all | ||||||
| SOA | ns.gabia.co.krhosting@gabia.com 2021-05-24 #22 | ||||||
co.kr
| DNSSEC | ⚠️ Not signed | ||||||
| NS | g.dns.kr ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.dns.kr ⚠️ Not in parent delegation | ||||||
| NS | c.dns.kr ⚠️ Not in parent delegation | ||||||
| NS | d.dns.kr ⚠️ Not in parent delegation | ||||||
| NS | e.dns.kr ⚠️ Not in parent delegation | ||||||
| NS | f.dns.kr ⚠️ Not in parent delegation | ||||||
| SOA | g.dns.krdomain-manager@nic.or.kr serial=2607040773 | ||||||
Same first word
flexstudy.com |
flexstudy.co.kr |
Similar names
DNS History
7 records (6 active, 1 former)
●NSns.gabia.co.kr2020-01-21 → 2026-07-04 · 2 obs
● 2026-07-04 15:38:02
●NSns1.gabia.co.kr2020-01-21 → 2026-07-04 · 2 obs
● 2026-07-04 15:38:02
●MXmxa.mailgun.org2020-01-21 → 2026-07-04 · 2 obs
● 2026-07-04 15:38:02
●MXmxb.mailgun.org2020-01-21 → 2026-07-04 · 2 obs
● 2026-07-04 15:38:02
○A49.247.3.1052020-01-21 → 2020-01-21 · 3 obs
○ 2026-06-15 13:14:32
○ 2026-07-04 15:38:02
●A49.247.8.882026-06-15 → 2026-07-04 · 3 obs
● 2026-06-15 13:14:32
● 2026-07-04 15:38:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| kr | b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr... | - |
| flexstudy.co.kr | ns1.gabia.co.kr, ns.gabia.net, ns.gabia.co.kr | 2 records |
✅ Authoritative Response
Server:121.78.117.39
NS records: ns1.gabia.co.kr, ns.gabia.net, ns.gabia.co.kr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for flexstudy.co.kr (unsigned zone)
⏱️ Timing
Total: 1707ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 49.247.8.88 |
| NS | 3 | ns.gabia.co.kr, ns1.gabia.co.kr... |
| MX | 2 | mxa.mailgun.org (pri: 10), mxb.mailgun.org (pri: 10) |
| TXT | 1 | v=spf1 include:mailgun.org ~all |
| SOA | 1 | ns.gabia.co.kr hosting.gabia.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.gabia.co.kr, ns.gabia.co.kr)
Analysis
IP Addresses
flexstudy.co.kr has exactly one IP address — 49.247.8.88.
Name Servers
flexstudy.co.kr carries NS records delegating to ns.gabia.net, ns1.gabia.co.kr and ns.gabia.co.kr.
At least some of flexstudy.co.kr's name servers are shared with other domains, for example xn--jo1bvz00fpw4b.com, livingsblog.com, budnamoo.com and two more.
These name servers tend to be used in conjunction with the name servers ns1.gabia.net.
Host names pointing to two IP addresses:
ns.gabia.net resolves to two addresses: 121.78.117.39 and 211.234.124.90.
Host names resolving to a single IP address:
The hostname ns1.gabia.co.kr resolves to 20.200.205.248.
The hostname ns.gabia.co.kr resolves to 43.201.170.100.
Mail Servers
flexstudy.co.kr uses two mail servers, mxa.mailgun.org and mxb.mailgun.org.
The mail server setup of flexstudy.co.kr matches that of other domains such as buckeyesupplytexas.com, burkepublish.com, avsinsuranceagency.com and two others.
At least some of the mail servers used by flexstudy.co.kr are shared with other domains: majalla.com, ivenframe.com, hiscapitalgroup.com and two others among them.
It is common to find these mail servers paired with the mail servers aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com, as well as two others.
Each of mxa.mailgun.org and mxb.mailgun.org has one IP address: mxa.mailgun.org uses 34.36.182.139 and mxb.mailgun.org uses 34.149.254.5.