a2m.co.kr - robtex.com
a2m.co.kr
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=2606170512 | ||||||
Subdomains
Same first word
Similar names
DNS History
12 records (6 active, 6 former)
○NSdemeter2016-09-12 → 2020-03-09 · 5 obs
● 2016-09-12 00:24:48
● 2020-03-09 22:49:48
○ 2026-03-26 12:47:58
○ 2026-06-16 23:13:02
○NSml5702015-10-31 → 2016-03-23 · 5 obs
● 2015-10-31 09:52:38
● 2016-03-23 23:08:26
○ 2016-09-12 00:24:48
○ 2026-06-16 23:13:02
●NSns-cloud-c1.googledomains.com2026-03-26 → 2026-06-16 · 3 obs
● 2026-03-26 12:47:58
● 2026-06-16 23:13:02
●NSns-cloud-c2.googledomains.com2026-03-26 → 2026-06-16 · 3 obs
● 2026-03-26 12:47:58
● 2026-06-16 23:13:02
●NSns-cloud-c3.googledomains.com2026-03-26 → 2026-06-16 · 3 obs
● 2026-03-26 12:47:58
● 2026-06-16 23:13:02
●NSns-cloud-c4.googledomains.com2026-03-26 → 2026-06-16 · 3 obs
● 2026-03-26 12:47:58
● 2026-06-16 23:13:02
○NSns12015-06-17 → 2020-03-09 · 4 obs
● 2020-03-09 22:49:48
○ 2026-03-26 12:47:58
○ 2026-06-16 23:13:02
●MXutm.a2m.co.kr2017-04-21 → 2026-06-16 · 3 obs
● 2017-04-21 10:01:48
● 2026-06-16 23:13:02
○MXwebmail.a2m.co.kr2015-10-31 → 2016-09-12 · 4 obs
● 2016-09-12 00:24:48
○ 2017-04-21 10:01:48
○ 2026-06-16 23:13:02
○A114.108.177.332015-06-17 → 2016-09-12 · 4 obs
● 2016-09-12 00:24:48
○ 2017-04-21 10:01:48
○ 2026-06-16 23:13:02
○A210.118.0.132017-04-21 → 2019-09-05 · 5 obs
● 2017-04-21 10:01:48
● 2019-09-05 05:16:28
○ 2020-03-03 02:35:34
○ 2026-06-16 23:13:02
●A211.240.98.1422020-03-03 → 2026-06-16 · 3 obs
● 2020-03-03 02:35:34
● 2026-06-16 23:13:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| kr | b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr... | - |
| a2m.co.kr | ns-cloud-c3.googledomains.com, ns-cloud-c4.googledomains.com, ns-cloud-c1.googledomains.com, ns-cloud-c2.googledomains.com | - |
✅ Authoritative Response
Server:216.239.36.108
NS records: ns-cloud-c3.googledomains.com, ns-cloud-c4.googledomains.com, ns-cloud-c1.googledomains.com, ns-cloud-c2.googledomains.com
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at a2m.co.kr: Error: DNS query timeout: 210.101.60.1 for DS a2m.co.kr
⏱️ Timing
Total: 3975ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 211.240.98.142 |
| NS | 4 | ns-cloud-c2.googledomains.com, ns-cloud-c1.googledomains.com... |
| MX | 1 | utm.a2m.co.kr (pri: 10) |
| TXT | 2 | v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQ, v=spf1 ip4:210.118.0.2 ~all |
| SOA | 1 | ns-cloud-c1.googledomains.com cloud-dns- |
Analysis
Hierarchy
webmail.a2m.co.kr and utm.a2m.co.kr each fall under a2m.co.kr as their parent domain.
IP Addresses
a2m.co.kr resolves to just one IP address, 211.240.98.142.
Name Servers
The NS records for a2m.co.kr point to four name servers: ns-cloud-c1.googledomains.com, ns-cloud-c2.googledomains.com, ns-cloud-c3.googledomains.com and ns-cloud-c4.googledomains.com.
At least some of a2m.co.kr's name servers are shared with other domains, for example bashout.org, umbrellaservices.us, visuallearningstudios.com and two more.
Four hostnames, each resolving to a pair of IP addresses: ns-cloud-c1.googledomains.com directs to 216.239.32.108 and 2001:4860:4802:32::6c; ns-cloud-c2.googledomains.com directs to 216.239.34.108 and 2001:4860:4802:34::6c; ns-cloud-c3.googledomains.com directs to 216.239.36.108 and 2001:4860:4802:36::6c; ns-cloud-c4.googledomains.com directs to 216.239.38.108 and 2001:4860:4802:38::6c.
Mail Servers
The sole mail server for a2m.co.kr is utm.a2m.co.kr.
utm.a2m.co.kr directs to just one IP number, 210.118.0.1.