mem-tech.com - dns.ninja
mem-tech.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 221.139.49.8🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| NS | ns1.nurihosting.com ⭐ | ||||||
| A | 211.215.17.210🇰🇷 SKB-NET211.212.0.0/14 SK Broadband | ||||||
| NS | ns1.yncmedia.kr ⚠️ Not in zone NS records | ||||||
| A | 221.139.49.17🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| NS | ns2.yncmedia.kr ⚠️ Not in zone NS records | ||||||
| MX | mail.mem-tech.com ⭐ | ||||||
| A | 221.139.49.13🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| TXT | v=spf1 ip4:221.139.49.3 ip4:221.139.49.9 ip4:221.139.49.14 ip4:221.139.49.26 ... | ||||||
| SOA | ns1.nurihosting.comsupport@nurihosting.com 2023-01-26 #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=1785545202 | ||||||
Previously NS for
mem-tech.com |
postmaster.mem-tech.com |
Previously MX for
postmaster.mem-tech.com |
mem-tech.com |
Subdomains
mail.mem-tech.com |
Same first word
mem-tech.com |
Similar names
DNS History
10 records (5 active, 5 former)
○NSmem-tech.com2015-05-23 → 2017-06-23 · 4 obs
● 2017-06-23 12:15:34
○ 2026-03-08 21:00:36
○ 2026-08-01 00:49:42
○NSns.mem-tech.com2015-05-23 → 2017-06-23 · 4 obs
● 2017-06-23 12:15:34
○ 2026-03-08 21:00:36
○ 2026-08-01 00:49:42
●NSns1.nurihosting.com2026-03-08 → 2026-08-01 · 3 obs
● 2026-03-08 21:00:36
● 2026-08-01 00:49:42
●NSns1.yncmedia.kr2026-03-08 → 2026-08-01 · 3 obs
● 2026-03-08 21:00:36
● 2026-08-01 00:49:42
○NSns2.mem-tech.com2015-05-23 → 2017-06-23 · 4 obs
● 2017-06-23 12:15:34
○ 2026-03-08 21:00:36
○ 2026-08-01 00:49:42
●NSns2.yncmedia.kr2026-03-08 → 2026-08-01 · 3 obs
● 2026-03-08 21:00:36
● 2026-08-01 00:49:42
●MXmail.mem-tech.com2026-03-08 → 2026-08-01 · 3 obs
● 2026-03-08 21:00:36
● 2026-08-01 00:49:42
○MXmem-tech.com2015-05-23 → 2017-06-23 · 4 obs
● 2017-06-23 12:15:34
○ 2026-03-08 21:00:36
○ 2026-08-01 00:49:42
●A221.139.49.82026-03-08 → 2026-08-01 · 3 obs
● 2026-03-08 21:00:36
● 2026-08-01 00:49:42
○A61.74.62.622015-05-23 → 2017-06-23 · 4 obs
● 2017-06-23 12:15:34
○ 2026-03-08 21:00:36
○ 2026-08-01 00:49:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| mem-tech.com | ns1.yncmedia.kr, ns2.yncmedia.kr | - |
✅ Authoritative Response
Server:121.125.73.38
NS records: ns1.yncmedia.kr, ns2.yncmedia.kr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mem-tech.com (unsigned zone)
⏱️ Timing
Total: 1641ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 221.139.49.8 |
| MX | 1 | mail.mem-tech.com (pri: 10) |
| TXT | 1 | v=spf1 ip4:221.139.49.3 ip4:221.139.49.9 |
| SOA | 1 | ns1.nurihosting.com support.nurihosting. |
Analysis
Hierarchy
mail.mem-tech.com is a subdomain of mem-tech.com.
IP Addresses
mem-tech.com resolves to one IP address: 221.139.49.8.
mail.xn--ok0b410b23k.com, mail.katsuroi.com, kcou.org and two other host names share IP numbers with mem-tech.com.
Name Servers
DNS for mem-tech.com is handled by three authoritative name servers: ns1.nurihosting.com, ns1.yncmedia.kr and ns2.yncmedia.kr.
The name servers of mem-tech.com overlap at least partially with those of other domains — among them dinail.com, xn--vk1b120bh6e9sfz2b.com, amcare.kr and two more.
These name servers commonly appear in delegations together with ns2.nurihosting.com, ns1.aramschool.co.kr, ns1.bver.co.kr and 7 other.
Both ns1.nurihosting.com and ns1.yncmedia.kr have a single IP address each — ns1.nurihosting.com resolves to 211.215.17.210 while ns1.yncmedia.kr resolves to 221.139.49.17.
Mail Servers
Mail for mem-tech.com is handled by a single mail server, mail.mem-tech.com.
mail.mem-tech.com has exactly one IP number: 221.139.49.13.