semthink.com - dns.ninja

`semthink.com`

DNSSEC	⚠️ Not signed
A	2600:1f18:4ae:c605:dd5d:b838:5816:d7fb^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	2600:1f18:4ae:c606:78d4:4260:db4e:aeee^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	13.223.25.84^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
A	54.243.117.197^{🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix}
NS	`ns1.namebrightdns.com` ⭐
		A	2600:1f18:683a:ae1a:6900:d1bd:7672:d0ca^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:7bc2:638d:8ca6:fcc4^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:d57d:390a:64b4:d4f1^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	52.203.211.134^{🇺🇸 Amazon52.200.0.0/13 EC2 IAD prefix}
			PTR	`ec2-52-203-211-134.compute-1.amazonaws.com`
		A	52.204.81.90^{🇺🇸 Amazon52.200.0.0/13 EC2 IAD prefix}
			PTR	`ec2-52-204-81-90.compute-1.amazonaws.com`
NS	`nsg1.namebrightdns.com`
		A	2600:1f18:683a:ae1a:303c:9b15:3db3:a8a2^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:9b5a:7d38:2d23:6714^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:6fa6:bf7e:9de7:5e92^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	54.80.151.113^{🇺🇸 Amazon54.80.0.0/14 EC2 IAD prefix}
			PTR	`ec2-54-80-151-113.compute-1.amazonaws.com`
		A	54.89.201.236^{🇺🇸 Amazon54.89.0.0/16 EC2 IAD prefix}
			PTR	`ec2-54-89-201-236.compute-1.amazonaws.com`
		A	54.234.103.190^{🇺🇸 Amazon54.234.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-234-103-190.compute-1.amazonaws.com`
NS	`nsg2.namebrightdns.com`
		A	2600:1f18:683a:ae1a:f535:3a35:f979:7d42^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:9495:4bb7:fbde:b015^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:f6ec:2543:1b2e:f83c^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.90.140.102^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-90-140-102.compute-1.amazonaws.com`
		A	54.221.37.2^{🇺🇸 Amazon54.221.0.0/16 EC2 IAD prefix}
			PTR	`ec2-54-221-37-2.compute-1.amazonaws.com`
		A	54.225.31.228^{🇺🇸 Amazon54.224.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-225-31-228.compute-1.amazonaws.com`
TXT	`v=spf1 -all`
TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-07-13 #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.net`nstld@verisign-grs.com serial=1783994037

Same first word

semthink.com

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DNS History

15 records (7 active, 8 former)

○NSdns10.hichina.com2016-04-10 → 2017-02-01 · 5 obs

○ 2016-01-17 20:11:14
● 2016-04-10 03:51:32
● 2017-02-01 12:41:14
○ 2019-04-02 18:13:18
○ 2026-07-14 02:12:26

○NSdns9.hichina.com2016-04-10 → 2017-02-01 · 5 obs

○ 2016-01-17 20:11:14
● 2016-04-10 03:51:32
● 2017-02-01 12:41:14
○ 2019-04-02 18:13:18
○ 2026-07-14 02:12:26

○NSns1.nachtvision.com2008-03-07 → 2008-03-07 · 3 obs

● 2008-03-07 17:29:38
○ 2016-01-17 20:11:14
○ 2026-07-14 02:12:26

●NSns1.namebrightdns.com2026-03-04 → 2026-07-14 · 3 obs

○ 2019-04-02 18:13:18
● 2026-03-04 00:46:12
● 2026-07-14 02:12:26

○NSns2.nachtvision.com2008-03-07 → 2008-03-07 · 3 obs

● 2008-03-07 17:29:38
○ 2016-01-17 20:11:14
○ 2026-07-14 02:12:26

●NSnsg1.namebrightdns.com2019-04-02 → 2026-07-14 · 3 obs

○ 2017-02-01 12:41:14
● 2019-04-02 18:13:18
● 2026-07-14 02:12:26

●NSnsg2.namebrightdns.com2019-04-02 → 2026-07-14 · 3 obs

○ 2017-02-01 12:41:14
● 2019-04-02 18:13:18
● 2026-07-14 02:12:26

○MXmxn.mxhichina.com2016-04-10 → 2017-02-01 · 4 obs

● 2016-04-10 03:51:32
● 2017-02-01 12:41:14
○ 2019-04-02 18:13:18
○ 2026-07-14 02:12:26

○MXmxw.mxhichina.com2016-04-10 → 2017-02-01 · 4 obs

● 2016-04-10 03:51:32
● 2017-02-01 12:41:14
○ 2019-04-02 18:13:18
○ 2026-07-14 02:12:26

○A121.42.103.522016-04-10 → 2017-02-01 · 4 obs

● 2016-04-10 03:51:32
● 2017-02-01 12:41:14
○ 2019-04-02 18:13:18
○ 2026-07-14 02:12:26

●A13.223.25.842026-03-04 → 2026-07-14 · 3 obs

○ 2019-04-02 18:13:18
● 2026-03-04 00:46:12
● 2026-07-14 02:12:26

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-03-04 → 2026-07-14 · 3 obs

○ 2019-04-02 18:13:18
● 2026-03-04 00:46:12
● 2026-07-14 02:12:26

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-03-04 → 2026-07-14 · 3 obs

○ 2019-04-02 18:13:18
● 2026-03-04 00:46:12
● 2026-07-14 02:12:26

●A54.243.117.1972026-03-04 → 2026-07-14 · 3 obs

○ 2019-04-02 18:13:18
● 2026-03-04 00:46:12
● 2026-07-14 02:12:26

○CNAMEhdredirect-lb5-1afb6e2973825a56.elb.us-east-1.amazonaws.com2019-04-02 → 2019-04-02 · 3 obs

● 2019-04-02 18:13:18
○ 2026-03-04 00:46:12
○ 2026-07-14 02:12:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, l.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net...	-
semthink.com	nsg1.namebrightdns.com, nsg2.namebrightdns.com	12 records

✅ Authoritative Response

Server:3.90.140.102

NS records: nsg1.namebrightdns.com, nsg2.namebrightdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for semthink.com (unsigned zone)

⏱️ Timing

Total: 124ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`54.243.117.197, 13.223.25.84`
AAAA	2	`2600:1f18:4ae:c606:78d4:4260:db4e:aeee, 2600:1f18:4ae:c605:dd5d:b838:5816:d7fb`
NS	2	`nsg1.namebrightdns.com, nsg2.namebrightdns.com`
TXT	2	`afternic-verification-G9G3tM8T8EwEizzPzj, v=spf1 -all`
SOA	1	`ns1.namebrightdns.com dns.namebright.com`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (nsg1.namebrightdns.com, nsg1.namebrightdns.com, nsg1.namebrightdns.com...)

Analysis

IP Addresses

semthink.com resolves to four IP addresses: 13.223.25.84, 54.243.117.197, 2600:1f18:4ae:c605:dd5d:b838:5816:d7fb and 2600:1f18:4ae:c606:78d4:4260:db4e:aeee.

cioboard.com, kxnet.celljournalist.com, changanlife.com plus two other host names have IP numbers in common with semthink.com.

Name Servers

semthink.com is served by three name servers: ns1.namebrightdns.com, nsg1.namebrightdns.com and nsg2.namebrightdns.com.

semthink.com has at least partial name server overlap with other domains, such as outbent.com, airjector.com, fabsbook.com and two others.

These name servers tend to appear together with the name servers ns2.namebrightdns.com, domain-for-sale.hugedomainsdns.com and forsale.hugedomainsdns.com.

Hosts with 6 IP addresses each:

nsg1.namebrightdns.com maps to 54.80.151.113, 54.89.201.236, 54.234.103.190 and 3 additional IP addresses.

nsg2.namebrightdns.com maps to 3.90.140.102, 54.221.37.2, 54.225.31.228 and 3 additional IP addresses.

Hosts with five IP addresses:

ns1.namebrightdns.com has IP addresses 52.203.211.134, 52.204.81.90 and 2600:1f18:683a:ae1a:6900:d1bd:7672:d0ca along with two other addresses.