🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`efficiencystudy.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:ae1b:4e28:5224:1c17:c95d^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	54.81.72.86^{🇺🇸 Amazon54.80.0.0/14 EC2 IAD prefix}
			PTR	`ec2-54-81-72-86.compute-1.amazonaws.com`
		A	54.162.28.79^{🇺🇸 Amazon54.160.0.0/14 EC2 IAD prefix}
			PTR	`ec2-54-162-28-79.compute-1.amazonaws.com`
NS	`domain-for-sale.hugedomainsdns.com`
		A	2600:1f18:683a:ae1a:b7f8:9db8:e2c0:ea4d^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:3678:5912:58b4:f1bb^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:972d:ba8c:15bd:1fc4^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	13.221.70.139^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
			PTR	`ec2-13-221-70-139.compute-1.amazonaws.com`
		A	52.90.122.106^{🇺🇸 Amazon52.90.0.0/15 EC2 IAD prefix}
			PTR	`ec2-52-90-122-106.compute-1.amazonaws.com`
		A	54.91.117.97^{🇺🇸 Amazon54.90.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-91-117-97.compute-1.amazonaws.com`
NS	`forsale.hugedomainsdns.com`
		A	2600:1f18:683a:ae1a:4cc0:5acf:aad1:572a^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:bf98:4592:dea7:ef46^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:44ba:1b15:cef8:e750^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.81.217.152^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-81-217-152.compute-1.amazonaws.com`
		A	54.82.105.15^{🇺🇸 Amazon54.80.0.0/14 EC2 IAD prefix}
			PTR	`ec2-54-82-105-15.compute-1.amazonaws.com`
		A	54.209.221.205^{🇺🇸 Amazon54.208.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-209-221-205.compute-1.amazonaws.com`
TXT	`v=spf1 -all`
TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-10-06 #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=1791348494

Same first word

efficiencystudy.com

Previous names

Next names

DNS History

22 records (7 active, 15 former)

●NSdomain-for-sale.hugedomainsdns.com2026-08-27 → 2026-10-07 · 3 obs

○ 2017-01-27 23:25:00
● 2026-08-27 09:34:06
● 2026-10-07 05:18:00

●NSforsale.hugedomainsdns.com2026-08-27 → 2026-10-07 · 3 obs

○ 2017-01-27 23:25:00
● 2026-08-27 09:34:06
● 2026-10-07 05:18:00

●NSns1.namebrightdns.com2015-06-18 → 2026-10-07 · 6 obs

● 2015-06-18 13:22:12
○ 2015-11-20 20:14:36
● 2016-02-28 13:49:16
○ 2016-05-29 19:36:34
● 2017-01-27 23:25:00
● 2026-10-07 05:18:00

○NSns2.namebrightdns.com2015-06-18 → 2017-01-27 · 7 obs

● 2015-06-18 13:22:12
○ 2015-11-20 20:14:36
● 2016-02-28 13:49:16
○ 2016-05-29 19:36:34
● 2017-01-27 23:25:00
○ 2026-08-27 09:34:06
○ 2026-10-07 05:18:00

○NSnsg1.namebrightdns.com2015-11-20 → 2016-05-29 · 6 obs

○ 2015-06-18 13:22:12
● 2015-11-20 20:14:36
○ 2016-02-28 13:49:16
● 2016-05-29 19:36:34
○ 2017-01-27 23:25:00
○ 2026-10-07 05:18:00

○NSnsg2.namebrightdns.com2015-11-20 → 2016-05-29 · 6 obs

○ 2015-06-18 13:22:12
● 2015-11-20 20:14:36
○ 2016-02-28 13:49:16
● 2016-05-29 19:36:34
○ 2017-01-27 23:25:00
○ 2026-10-07 05:18:00

○MXanmail.namebrightmail.com2015-06-18 → 2016-02-28 · 4 obs

● 2015-06-18 13:22:12
● 2016-02-28 13:49:16
○ 2016-05-29 19:36:34
○ 2026-10-07 05:18:00

○MXmailtest8888.namebrightmail.com2016-05-29 → 2016-05-29 · 4 obs

○ 2016-02-28 13:49:16
● 2016-05-29 19:36:34
○ 2017-01-27 23:25:00
○ 2026-10-07 05:18:00

○A107.23.42.502016-02-28 → 2016-02-28 · 4 obs

○ 2015-11-20 20:14:36
● 2016-02-28 13:49:16
○ 2016-05-29 19:36:34
○ 2026-10-07 05:18:00

●A13.223.25.842026-08-27 → 2026-10-07 · 3 obs

○ 2017-01-27 23:25:00
● 2026-08-27 09:34:06
● 2026-10-07 05:18:00

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-08-27 → 2026-10-07 · 3 obs

○ 2017-01-27 23:25:00
● 2026-08-27 09:34:06
● 2026-10-07 05:18:00

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-08-27 → 2026-10-07 · 3 obs

○ 2017-01-27 23:25:00
● 2026-08-27 09:34:06
● 2026-10-07 05:18:00

○A52.200.243.1232016-05-29 → 2016-05-29 · 4 obs

○ 2016-02-28 13:49:16
● 2016-05-29 19:36:34
○ 2017-01-27 23:25:00
○ 2026-10-07 05:18:00

○A52.73.136.1402016-02-28 → 2016-02-28 · 4 obs

○ 2015-11-20 20:14:36
● 2016-02-28 13:49:16
○ 2016-05-29 19:36:34
○ 2026-10-07 05:18:00

○A54.152.144.2432016-05-29 → 2016-05-29 · 4 obs

○ 2016-02-28 13:49:16
● 2016-05-29 19:36:34
○ 2017-01-27 23:25:00
○ 2026-10-07 05:18:00

○A54.174.31.2542015-06-18 → 2015-11-20 · 4 obs

● 2015-06-18 13:22:12
● 2015-11-20 20:14:36
○ 2016-02-28 13:49:16
○ 2026-10-07 05:18:00

○A54.208.74.2152015-06-18 → 2015-11-20 · 4 obs

● 2015-06-18 13:22:12
● 2015-11-20 20:14:36
○ 2016-02-28 13:49:16
○ 2026-10-07 05:18:00

●A54.243.117.1972026-08-27 → 2026-10-07 · 3 obs

○ 2017-01-27 23:25:00
● 2026-08-27 09:34:06
● 2026-10-07 05:18:00

○A54.82.156.192017-01-27 → 2017-01-27 · 4 obs

○ 2016-05-29 19:36:34
● 2017-01-27 23:25:00
○ 2026-08-27 09:34:06
○ 2026-10-07 05:18:00

○A54.86.225.1562017-01-27 → 2017-01-27 · 4 obs

○ 2016-05-29 19:36:34
● 2017-01-27 23:25:00
○ 2026-08-27 09:34:06
○ 2026-10-07 05:18:00

○CNAMEhdredirect-lb-399551664.us-east-1.elb.amazonaws.com2015-06-18 → 2016-05-29 · 4 obs

● 2015-06-18 13:22:12
● 2016-05-29 19:36:34
○ 2017-01-27 23:25:00
○ 2026-10-07 05:18:00

○CNAMEhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com2017-01-27 → 2017-01-27 · 4 obs

○ 2016-05-29 19:36:34
● 2017-01-27 23:25:00
○ 2026-08-27 09:34:06
○ 2026-10-07 05:18:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net...	-
efficiencystudy.com	domain-for-sale.hugedomainsdns.com, forsale.hugedomainsdns.com	12 records

✅ Authoritative Response

Server:13.221.70.139

NS records: domain-for-sale.hugedomainsdns.com, forsale.hugedomainsdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for efficiencystudy.com (unsigned zone)

⏱️ Timing

Total: 380ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`54.243.117.197, 13.223.25.84`
AAAA	2	`2600:1f18:4ae:c605:dd5d:b838:5816:d7fb, 2600:1f18:4ae:c606:78d4:4260:db4e:aeee`
NS	2	`forsale.hugedomainsdns.com, domain-for-sale.hugedomainsdns.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 (domain-for-sale.hugedomainsdns.com, domain-for-sale.hugedomainsdns.com, domain-for-sale.hugedomainsdns.com...)

Analysis

IP Addresses

efficiencystudy.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.

server54.cyberbg.com, hortunlimited.com, capsaq.com and two other host names share IP numbers with efficiencystudy.com.

Name Servers

efficiencystudy.com has three name servers — domain-for-sale.hugedomainsdns.com, forsale.hugedomainsdns.com and ns1.namebrightdns.com.

efficiencystudy.com partially shares its NS delegation with several other domains, including shelfdrop.com, soonhock.com, afutur.com and two others.

These name servers regularly co-occur with the name servers nsg1.namebrightdns.com, nsg2.namebrightdns.com and ns2.namebrightdns.com.

Hostnames that resolve to 6 IP addresses:

domain-for-sale.hugedomainsdns.com points to 13.221.70.139, 52.90.122.106, 54.91.117.97 and 3 other IP addresses.

forsale.hugedomainsdns.com points to 3.81.217.152, 54.82.105.15, 54.209.221.205 and 3 other IP addresses.

Hostnames that resolve to three IP addresses:

ns1.namebrightdns.com resolves to 54.81.72.86, 54.162.28.79 and 2600:1f18:683a:ae1b:4e28:5224:1c17:c95d.

efficiencystudy.com - robtex.com