istudycomposition.com - robtex.com

istudycomposition.com

DNSSEC⚠️ Not signed
A192.243.85.36🇺🇸 F5192.243.85.0/24 hosted
NSpdns85.ultradns.com ⭐
A2001:502:f3ff::79🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar
PTRpdns85.ultradns.com
A156.154.64.85🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar
PTRpdns85.ultradns.com
NSpdns85.ultradns.biz
A2610:a1:1015::79🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar
PTRpdns85.ultradns.biz
A156.154.66.85🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar
PTRpdns85.ultradns.biz
NSpdns85.ultradns.net
A2610:a1:1014::79🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar
PTRpdns85.ultradns.net
A156.154.65.85🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar
PTRpdns85.ultradns.net
NSpdns85.ultradns.org
A2001:502:4612::79🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar
PTRpdns85.ultradns.org
A156.154.67.85🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar
PTRpdns85.ultradns.org
MXcorp148mr3.mcgraw-hill.com ⭐
MXcorp148mr4.mcgraw-hill.com ⭐
MXnj12corpmr01.mcgraw-hill.com ⭐
MXnj12corpmr02.mcgraw-hill.com ⭐
TXTv=spf1 mx -all
SOApdns85.ultradns.comhostmaster@mheducation.com 2014-06-30 #17

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1777119562

Same first word

istudycomposition.com

DNS History

11 records (9 active, 2 former)

20162017201820192020202120222023202420252026NSpdns85.ultradns.bizpdns85.ultradns.compdns85.ultradns.netpdns85.ultradns.orgMXcorp148mr3.mcgraw-hill.comcorp148mr4.mcgraw-hill.comnj12corpmr01.mcgraw-hill.comnj12corpmr02.mcgraw-hill.comA192.243.85.36192.243.83.30192.243.93.45
●NSpdns85.ultradns.biz2015-05-31 → 2026-04-25 · 2 obs
● 2015-05-31 19:51:50
● 2026-04-25 12:47:30
●NSpdns85.ultradns.com2015-05-31 → 2026-04-25 · 2 obs
● 2015-05-31 19:51:50
● 2026-04-25 12:47:30
●NSpdns85.ultradns.net2015-05-31 → 2026-04-25 · 2 obs
● 2015-05-31 19:51:50
● 2026-04-25 12:47:30
●NSpdns85.ultradns.org2015-05-31 → 2026-04-25 · 2 obs
● 2015-05-31 19:51:50
● 2026-04-25 12:47:30
●MXcorp148mr3.mcgraw-hill.com2015-05-31 → 2026-04-25 · 2 obs
● 2015-05-31 19:51:50
● 2026-04-25 12:47:30
●MXcorp148mr4.mcgraw-hill.com2015-05-31 → 2026-04-25 · 2 obs
● 2015-05-31 19:51:50
● 2026-04-25 12:47:30
●MXnj12corpmr01.mcgraw-hill.com2015-05-31 → 2026-04-25 · 2 obs
● 2015-05-31 19:51:50
● 2026-04-25 12:47:30
●MXnj12corpmr02.mcgraw-hill.com2015-05-31 → 2026-04-25 · 2 obs
● 2015-05-31 19:51:50
● 2026-04-25 12:47:30
○A192.243.83.302015-05-31 → 2017-04-09 · 4 obs
● 2015-05-31 19:51:50
● 2017-04-09 22:31:32
○ 2026-04-24 09:29:28
○ 2026-04-25 12:47:30
●A192.243.85.362026-04-24 → 2026-04-25 · 3 obs
○ 2017-04-09 22:31:32
● 2026-04-24 09:29:28
● 2026-04-25 12:47:30
○A192.243.93.452015-05-31 → 2017-04-09 · 4 obs
● 2015-05-31 19:51:50
● 2017-04-09 22:31:32
○ 2026-04-24 09:29:28
○ 2026-04-25 12:47:30

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comg.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net, d.gtld-servers.net...-
istudycomposition.compdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org2 records

✅ Authoritative Response

Server:156.154.66.85

NS records: pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for istudycomposition.com (unsigned zone)

⏱️ Timing

Total: 335ms | Queries: -

📄 Records

TypeCountSample Data
A1192.243.85.36
NS4pdns85.ultradns.biz, pdns85.ultradns.com...
MX4corp148mr3.mcgraw-hill.com (pri: 20), corp148mr4.mcgraw-hill.com (pri: 20)...
TXT1v=spf1 mx -all
SOA1pdns85.ultradns.com hostmaster.mheducati

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (pdns85.ultradns.com, pdns85.ultradns.com)

Analysis

IP Addresses

istudycomposition.com points to a single IP address: 192.243.85.36.

Other host names such as istudyfrench.ca, istudypersonalhealth.ca, istudysocialpsychology.ca, istudyaccounting.com and istudybuscomm.com share IP numbers with istudycomposition.com.

Name Servers

istudycomposition.com is delegated to four name servers: pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org.

At least part of the name servers for istudycomposition.com are shared with other domains, for instance connectintrotobusiness.com, wgconnect.com, cardonbcom.com, mathscape2.com and myebook.ca.

These name servers are commonly used alongside udns1.ultradns.net and udns2.ultradns.net.

Host names with two IP numbers:

pdns85.ultradns.biz points to: 2610:a1:1015::79 and 156.154.66.85

pdns85.ultradns.com points to: 2001:502:f3ff::79 and 156.154.64.85

pdns85.ultradns.net points to: 2610:a1:1014::79 and 156.154.65.85

pdns85.ultradns.org points to: 2001:502:4612::79 and 156.154.67.85

Mail Servers

istudycomposition.com is handled by four mail servers: corp148mr3.mcgraw-hill.com, corp148mr4.mcgraw-hill.com, nj12corpmr01.mcgraw-hill.com and nj12corpmr02.mcgraw-hill.com.

istudycomposition.com shares at least some mail servers with other domains, for example sandp.us, standardpoors.com, aviationweek.eu, maalot.co.il and istudyhealthpsychology.ca.

these mail servers are often used together with corp148mr6.mcgraw-hill.com and corp55wmr5.mcgraw-hill.com.