betterclass.kr - robtex.com
betterclass.kr
| DNSSEC | ⚠️ Not signed | ||||||
| A | 3.37.40.103🇰🇷 Amazon3.36.0.0/14 EC2 ICN prefix | ||||||
| PTR | ec2-3-37-40-103.ap-northeast-2.compute.amazonaws.com | ||||||
| A | 43.200.75.224🇰🇷 Amazon43.200.0.0/14 EC2 ICN Prefix | ||||||
| NS | ns-1483.awsdns-57.org ⭐ | ||||||
| A | 2600:9000:5305:cb00::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront | ||||||
| PTR | ns-1483.awsdns-57.org | ||||||
| A | 205.251.197.203🇺🇸 Amazon205.251.197.0/24 prefix | ||||||
| PTR | ns-1483.awsdns-57.org | ||||||
| NS | ns-1674.awsdns-17.co.uk | ||||||
| A | 2600:9000:5306:8a00::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1674.awsdns-17.co.uk | ||||||
| A | 205.251.198.138🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1674.awsdns-17.co.uk | ||||||
| NS | ns-64.awsdns-08.com | ||||||
| A | 2600:9000:5300:4000::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront | ||||||
| PTR | ns-64.awsdns-08.com | ||||||
| A | 205.251.192.64🇺🇸 Amazon205.251.192.0/24 prefix | ||||||
| PTR | ns-64.awsdns-08.com | ||||||
| NS | ns-682.awsdns-21.net | ||||||
| A | 2600:9000:5302:aa00::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-682.awsdns-21.net | ||||||
| A | 205.251.194.170🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-682.awsdns-21.net | ||||||
| SOA | ns-1483.awsdns-57.orgawsdns-hostmaster@amazon.com serial=1 | ||||||
kr
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | g.dns.kr ⭐ | ||||||
| NS | b.dns.kr | ||||||
| NS | c.dns.kr | ||||||
| NS | d.dns.kr | ||||||
| NS | e.dns.kr | ||||||
| NS | f.dns.kr | ||||||
| SOA | g.dns.krdomain-manager@nic.or.kr serial=2603080650 | ||||||
Same first word
betterclass.kr |
betterclass.click |
DNS History
8 records (6 active, 2 former)
●NSns-1483.awsdns-57.org2026-02-16 → 2026-03-23 · 2 obs
● 2026-03-23 10:19:36
●NSns-1674.awsdns-17.co.uk2026-02-16 → 2026-03-23 · 2 obs
● 2026-03-23 10:19:36
●NSns-64.awsdns-08.com2026-02-16 → 2026-03-23 · 2 obs
● 2026-03-23 10:19:36
●NSns-682.awsdns-21.net2026-02-16 → 2026-03-23 · 2 obs
● 2026-03-23 10:19:36
○A13.124.147.1432026-02-16 → 2026-02-19 · 3 obs
● 2026-02-19 00:44:02
○ 2026-03-23 10:19:36
○A3.35.60.2362026-02-16 → 2026-02-19 · 3 obs
● 2026-02-19 00:44:02
○ 2026-03-23 10:19:36
●A3.37.40.1032026-03-23 → 2026-03-23 · 2 obs
● 2026-03-23 10:19:36
●A43.200.75.2242026-03-23 → 2026-03-23 · 2 obs
● 2026-03-23 10:19:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| kr | c.dns.kr, b.dns.kr, e.dns.kr, f.dns.kr... | 10 records |
| betterclass.kr | ns-1674.awsdns-17.co.uk, ns-1483.awsdns-57.org, ns-64.awsdns-08.com, ns-682.awsdns-21.net | - |
✅ Authoritative Response
Server:205.251.192.64
NS records: ns-1674.awsdns-17.co.uk, ns-1483.awsdns-57.org, ns-64.awsdns-08.com, ns-682.awsdns-21.net
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at betterclass.kr: Error: DNS query timeout: 210.101.60.1 for DS betterclass.kr
⏱️ Timing
Total: 3639ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 3.37.40.103, 43.200.75.224 |
| NS | 4 | ns-1483.awsdns-57.org, ns-1674.awsdns-17.co.uk... |
| SOA | 1 | ns-1483.awsdns-57.org awsdns-hostmaster. |
📌 Glue Records Collected
Total: 10
In-bailiwick: 10 (b.dns.kr, c.dns.kr, d.dns.kr...)
Analysis
IP Addresses
betterclass.kr resolves to two IP numbers: 3.37.40.103 and 43.200.75.224.
Other host names, for instance ec2-43-200-75-224.ap-northeast-2.compute.amazonaws.com, share IP numbers with betterclass.kr.
Name Servers
betterclass.kr is delegated to four name servers: ns-64.awsdns-08.com, ns-682.awsdns-21.net, ns-1483.awsdns-57.org and ns-1674.awsdns-17.co.uk.
betterclass.kr at least partially shares name servers with other domains, for instance pizzamarchello.sk, moconavi.biz, tvc.co.jp, holy-2710.link and stpancrasintl.co.uk.
These name servers are commonly used alongside ns-335.awsdns-41.com, ns-874.awsdns-45.net, ns-1528.awsdns-63.org, ns-225.awsdns-28.com, ns-776.awsdns-33.net and ns-1601.awsdns-08.co.uk.
Host names with two IP numbers:
ns-64.awsdns-08.com points to 2600:9000:5300:4000::1 and 205.251.192.64; ns-682.awsdns-21.net points to 2600:9000:5302:aa00::1 and 205.251.194.170; ns-1483.awsdns-57.org points to 2600:9000:5305:cb00::1 and 205.251.197.203; ns-1674.awsdns-17.co.uk points to 2600:9000:5306:8a00::1 and 205.251.198.138.