`as21.com`

DNSSEC	⚠️ Not signed
A	75.2.0.44^{🇺🇸 Amazon75.2.0.0/20}
		PTR	`ab791f743a3c6d593.awsglobalaccelerator.com`
A	99.83.248.72^{🇺🇸 Amazon99.83.240.0/20}
NS	`ns1.hosting.co.kr` ⭐
		A	121.254.170.11^{🇰🇷 DACOM-NET121.254.128.0/17 contact noc@bora.net if necessary}
NS	`ns2.hosting.co.kr`
		A	43.201.141.93^{🇰🇷 Amazon43.200.0.0/14 EC2 ICN Prefix}
			PTR	`ec2-43-201-141-93.ap-northeast-2.compute.amazonaws.com`
NS	`ns3.hosting.co.kr`
		A	121.254.170.12^{🇰🇷 DACOM-NET121.254.128.0/17 contact noc@bora.net if necessary}
NS	`ns4.hosting.co.kr`
		A	43.201.141.93^{🇰🇷 Amazon43.200.0.0/14 EC2 ICN Prefix}
			PTR	`ec2-43-201-141-93.ap-northeast-2.compute.amazonaws.com`
SOA	`ns1.hosting.co.kr`admin@as21.com serial=2

`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.net`nstld@verisign-grs.com serial=1774418422

WOT: UNKNOWN (1/100)

Same first word

as21.com

as21.net

as21.info

Similar names

12as.com

sa21.es

sa12.de

sa12.org

12sa.net

1a2s.com

a12s.com

2as1.co.uk

1a2s.cn

12sa.com

2as1.com

a2s1.com

a1s2.com

a12s.mobi

s2a1.com

as12.net

a21s.de

a21s.com

s12a.com

1a2s.de

2as1.net

as12.de

sa21.com

1as2.com

DNS History

11 records (6 active, 5 former)

●NSns1.hosting.co.kr2026-03-24 → 2026-03-25 · 3 obs

○ 2016-10-28 04:14:00
● 2026-03-24 00:28:42
● 2026-03-25 06:06:30

○NSns1.sedoparking.com2015-06-18 → 2016-10-28 · 4 obs

● 2015-06-18 07:49:02
● 2016-10-28 04:14:00
○ 2026-03-24 00:28:42
○ 2026-03-25 06:06:30

●NSns2.hosting.co.kr2026-03-24 → 2026-03-25 · 3 obs

○ 2016-10-28 04:14:00
● 2026-03-24 00:28:42
● 2026-03-25 06:06:30

○NSns2.sedoparking.com2015-06-18 → 2016-10-28 · 4 obs

● 2015-06-18 07:49:02
● 2016-10-28 04:14:00
○ 2026-03-24 00:28:42
○ 2026-03-25 06:06:30

●NSns3.hosting.co.kr2026-03-24 → 2026-03-25 · 3 obs

○ 2016-10-28 04:14:00
● 2026-03-24 00:28:42
● 2026-03-25 06:06:30

●NSns4.hosting.co.kr2026-03-24 → 2026-03-25 · 3 obs

○ 2016-10-28 04:14:00
● 2026-03-24 00:28:42
● 2026-03-25 06:06:30

○MXlocalhost2016-09-26 → 2016-10-28 · 5 obs

○ 2016-04-12 09:04:58
● 2016-09-26 13:52:22
● 2016-10-28 04:14:00
○ 2026-03-24 00:28:42
○ 2026-03-25 06:06:30

○MXmail.nickstel.com2015-06-18 → 2016-04-12 · 4 obs

● 2015-06-18 07:49:02
● 2016-04-12 09:04:58
○ 2016-09-26 13:52:22
○ 2026-03-25 06:06:30

○A72.52.4.912015-06-18 → 2016-10-28 · 4 obs

● 2015-06-18 07:49:02
● 2016-10-28 04:14:00
○ 2026-03-24 00:28:42
○ 2026-03-25 06:06:30

●A75.2.0.442026-03-24 → 2026-03-25 · 3 obs

○ 2016-10-28 04:14:00
● 2026-03-24 00:28:42
● 2026-03-25 06:06:30

●A99.83.248.722026-03-24 → 2026-03-25 · 3 obs

○ 2016-10-28 04:14:00
● 2026-03-24 00:28:42
● 2026-03-25 06:06:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, j.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net...	-
as21.com	ns2.hosting.co.kr, ns1.hosting.co.kr, ns3.hosting.co.kr, ns4.hosting.co.kr	-

✅ Authoritative Response

Server:43.201.141.93

NS records: ns2.hosting.co.kr, ns1.hosting.co.kr, ns3.hosting.co.kr, ns4.hosting.co.kr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for as21.com (unsigned zone)

⏱️ Timing

Total: 2020ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`99.83.248.72, 75.2.0.44`
NS	4	`ns1.hosting.co.kr, ns4.hosting.co.kr...`
SOA	1	`ns1.hosting.co.kr admin.as21.com`

Analysis

IP Addresses

as21.com resolves to two IP numbers: 75.2.0.44 and 99.83.248.72.

other host names including cocosoft.co.kr, sobija.com, lubbe.com, jnart.com and calitri.com share IP numbers with as21.com.

Name Servers

as21.com is delegated to four name servers: ns1.hosting.co.kr, ns2.hosting.co.kr, ns3.hosting.co.kr and ns4.hosting.co.kr.

as21.com at least partially shares name servers with other domains, for instance repius.com, fleek.kr, badatga.co.kr, navergames.com and lambgod.com.