istudybusstats.com - robtex.com

istudybusstats.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=1776996211
WOT: SAFE (60/100)

Same first word

istudybusstats.com
istudybusstats.ca

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.biz2015-06-01 → 2026-04-24 · 2 obs
● 2015-06-01 06:12:56
● 2026-04-24 02:30:02
●NSpdns85.ultradns.com2015-06-01 → 2026-04-24 · 2 obs
● 2015-06-01 06:12:56
● 2026-04-24 02:30:02
●NSpdns85.ultradns.net2015-06-01 → 2026-04-24 · 2 obs
● 2015-06-01 06:12:56
● 2026-04-24 02:30:02
●NSpdns85.ultradns.org2015-06-01 → 2026-04-24 · 2 obs
● 2015-06-01 06:12:56
● 2026-04-24 02:30:02
●MXcorp148mr3.mcgraw-hill.com2015-06-01 → 2026-04-24 · 2 obs
● 2015-06-01 06:12:56
● 2026-04-24 02:30:02
●MXcorp148mr4.mcgraw-hill.com2015-06-01 → 2026-04-24 · 2 obs
● 2015-06-01 06:12:56
● 2026-04-24 02:30:02
●MXnj12corpmr01.mcgraw-hill.com2015-06-01 → 2026-04-24 · 2 obs
● 2015-06-01 06:12:56
● 2026-04-24 02:30:02
●MXnj12corpmr02.mcgraw-hill.com2015-06-01 → 2026-04-24 · 2 obs
● 2015-06-01 06:12:56
● 2026-04-24 02:30:02
○A192.243.83.302015-06-01 → 2017-04-20 · 4 obs
● 2015-06-01 06:12:56
● 2017-04-20 10:33:02
○ 2026-04-23 20:44:02
○ 2026-04-24 02:30:02
●A192.243.85.362026-04-23 → 2026-04-24 · 3 obs
○ 2017-04-20 10:33:02
● 2026-04-23 20:44:02
● 2026-04-24 02:30:02
○A192.243.93.452015-06-01 → 2017-04-20 · 4 obs
● 2015-06-01 06:12:56
● 2017-04-20 10:33:02
○ 2026-04-23 20:44:02
○ 2026-04-24 02:30:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
istudybusstats.compdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org2 records

✅ Authoritative Response

Server:156.154.67.85

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for istudybusstats.com (unsigned zone)

⏱️ Timing

Total: 419ms | 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

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

Other host names such as etextbook.ca, mathatwork.ca, istudyom.ca, aleksppl.com and istudywriting.ca share IPs with istudybusstats.com.

Name Servers

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

istudybusstats.com at least partially shares name servers with other domains, for example aetnabettercarerewards.com, radreviewmhe.com, betterforyou.com, mhpractice.com.tw and wncpmathcurriculum.com.

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

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

istudybusstats.com shares at least partially some mail servers with other domains, for instance joyanes.es, standardandpoors.ae, istudyob.com, istudyeconomics.com and standardandpoors.net.

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