dongbuedu.org - robtex.com
dongbuedu.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 121.125.73.51🇰🇷 SKB-NET121.125.0.0/16 SK Broadband | ||||||
| NS | ns1.nurihosting.com ⭐ | ||||||
| A | 211.215.17.210🇰🇷 SKB-NET211.212.0.0/14 SK Broadband | ||||||
| NS | ns1.aramschool.co.kr ⚠️ Not in zone NS records | ||||||
| A | 221.139.49.17🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| NS | ns2.aramschool.co.kr ⚠️ Not in zone NS records | ||||||
| A | 121.125.73.38🇰🇷 SKB-NET121.125.0.0/16 SK Broadband | ||||||
| MX | mail.dongbuedu.org ⭐ | ||||||
| A | 121.125.73.58🇰🇷 SKB-NET121.125.0.0/16 SK Broadband | ||||||
| TXT | v=spf1 spf.naver.com ip4:218.237.67.247 ip4:121.125.73.53 ip4:218.237.67.249 ... | ||||||
| SOA | ns1.nurihosting.comsupport@nurihosting.com 2023-01-26 #1 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1778331042 | ||||||
Previously NS for
dongbuedu.org |
Subdomains
mail.dongbuedu.org |
Same first word
dongbuedu.org |
DNS History
12 records (5 active, 7 former)
○NSdongbuedu.org2015-08-22 → 2015-08-22 · 3 obs
○ 2015-11-15 00:09:54
○ 2026-05-09 13:28:36
○NSksidc-9j6b5gmh62015-08-22 → 2015-08-22 · 3 obs
○ 2015-11-15 00:09:54
○ 2026-05-09 13:28:36
●NSns1.aramschool.co.kr2026-03-05 → 2026-05-09 · 3 obs
● 2026-03-05 05:11:24
● 2026-05-09 13:28:36
●NSns1.nurihosting.com2015-11-15 → 2026-05-09 · 3 obs
● 2015-11-15 00:09:54
● 2026-05-09 13:28:36
●NSns2.aramschool.co.kr2026-03-05 → 2026-05-09 · 3 obs
● 2026-03-05 05:11:24
● 2026-05-09 13:28:36
○NSns2.nurihosting.com2015-11-15 → 2020-02-11 · 5 obs
● 2015-11-15 00:09:54
● 2020-02-11 21:44:56
○ 2026-03-05 05:11:24
○ 2026-05-09 13:28:36
●MXmail.dongbuedu.org2015-11-15 → 2026-05-09 · 2 obs
● 2026-05-09 13:28:36
○A116.122.36.782015-08-22 → 2015-08-22 · 3 obs
○ 2015-11-15 00:09:54
○ 2026-05-09 13:28:36
○A121.125.73.192016-02-01 → 2017-02-07 · 5 obs
● 2016-02-01 14:09:20
● 2017-02-07 18:54:22
○ 2020-02-11 21:44:56
○ 2026-05-09 13:28:36
○A121.125.73.272015-11-15 → 2015-11-15 · 4 obs
● 2015-11-15 00:09:54
○ 2016-02-01 14:09:20
○ 2026-05-09 13:28:36
●A121.125.73.512026-03-05 → 2026-05-09 · 3 obs
● 2026-03-05 05:11:24
● 2026-05-09 13:28:36
○A221.139.49.32020-02-11 → 2020-02-11 · 4 obs
● 2020-02-11 21:44:56
○ 2026-03-05 05:11:24
○ 2026-05-09 13:28:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, d0.org.afilias-nst.org, b2.org.afilias-nst.org | - |
| dongbuedu.org | ns2.aramschool.co.kr, ns1.aramschool.co.kr | - |
✅ Authoritative Response
Server:221.139.49.17
NS records: ns2.aramschool.co.kr, ns1.aramschool.co.kr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dongbuedu.org (unsigned zone)
⏱️ Timing
Total: 3129ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 121.125.73.51 |
| MX | 1 | mail.dongbuedu.org (pri: 10) |
| TXT | 1 | v=spf1 spf.naver.com ip4:218.237.67.247 |
| SOA | 1 | ns1.nurihosting.com support.nurihosting. |
Analysis
Hierarchy
mail.dongbuedu.org has dongbuedu.org as its parent.
IP Addresses
dongbuedu.org maps to IP address 121.125.73.51.
Other host names, for instance mail.ami-montessori.co.kr, sensbody.co.kr, mail.upipsc.com, onsemiro.com and gusanwon.com share IP numbers with dongbuedu.org.
Name Servers
dongbuedu.org is delegated to name servers ns1.nurihosting.com, ns1.aramschool.co.kr and ns2.aramschool.co.kr.
dongbuedu.org at least partially shares name servers with other domains such as xn--9d0bp79b31a.com, allnations.co.kr, ndsc.co.kr, kblp.co.kr and munjibang.com.
These name servers are often used together with ns2.nurihosting.com, ns1.web-store.kr, ns2.web-store.kr, ns1.anybuild.co.kr, ns2.anybuild.co.kr, ns1.bver.co.kr, ns2.bver.co.kr, ns1.ehompy.co.kr, ns2.ehompy.co.kr and ns1.namuweb.co.kr.
Host names with a single IP:
ns1.nurihosting.com points to 211.215.17.210
ns1.aramschool.co.kr points to 221.139.49.17
ns2.aramschool.co.kr points to 121.125.73.38
Mail Servers
dongbuedu.org is handled by a single mail server, mail.dongbuedu.org.
mail.dongbuedu.org points to one IP number: 121.125.73.58.