mcgrawhill.com.ph - robtex.com

mcgrawhill.com.ph

DNSSEC⚠️ Not signed
NSpdns85.ultradns.biz ⚠️ Not in zone NS records
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.com ⚠️ Not in zone NS records
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.net ⚠️ Not in zone NS records
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 ⚠️ Not in zone NS records
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

com.ph

DNSSEC⚠️ Not signed
NSph-tld-ns.dot.ph ⭐
NS1.ns.ph ⚠️ Not in parent delegation
NSns2.cuhk.edu.hk ⚠️ Not in parent delegation
NSns4.apnic.net ⚠️ Not in parent delegation
NSph.communitydns.net ⚠️ Not in parent delegation
SOAph-tld-ns.dot.phsysadmin@domains.ph 2026-04-27 #8
WOT: SAFE (8/100)

Same first word

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mcgrawhill.com.ph
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mcgrawhill.com.pr
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mcgrawhill.co.il
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mcgrawhill.com
mcgrawhill.pr
mcgrawhill.net
mcgrawhill.us
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mcgrawhill.it
mcgrawhill.mx
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mcgrawhill.tw
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mcgrawhill.org
mcgrawhill.cx
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mcgrawhill.io
mcgrawhill.ae
mcgrawhill.ca
mcgrawhill.ph
mcgrawhill.biz
mcgrawhill.app
mcgrawhill.cc

DNS History

4 records (4 active, 0 former)

NSpdns85.ultradns.bizpdns85.ultradns.compdns85.ultradns.netpdns85.ultradns.org
●NSpdns85.ultradns.biz2026-04-23 → 2026-04-27 · 2 obs
● 2026-04-23 19:17:12
● 2026-04-27 00:59:06
●NSpdns85.ultradns.com2026-04-23 → 2026-04-27 · 2 obs
● 2026-04-23 19:17:12
● 2026-04-27 00:59:06
●NSpdns85.ultradns.net2026-04-23 → 2026-04-27 · 2 obs
● 2026-04-23 19:17:12
● 2026-04-27 00:59:06
●NSpdns85.ultradns.org2026-04-23 → 2026-04-27 · 2 obs
● 2026-04-23 19:17:12
● 2026-04-27 00:59:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ph1.ns.ph, ph.communitydns.net, ns2.cuhk.edu.hk, ns4.apnic.net-
mcgrawhill.com.phpdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org, pdns85.ultradns.net-

✅ Authoritative Response

Server:156.154.65.85

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mcgrawhill.com.ph (unsigned zone)

⏱️ Timing

Total: 756ms | Queries: -

📄 Records

TypeCountSample Data

Analysis

Name Servers

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

mcgrawhill.com.ph at least partially shares its name servers with other domains, for instance mh.app, connecthist.net, mcgrawhillschool.com, cmdt2011.com and revealmathematics.com.

Host names with two IPs: 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.