mcgrawhill.ph - robtex.com

mcgrawhill.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

ph

DNSSEC🔒 Signed (DS record present)
NSph-tld-ns.dot.ph ⭐
NS1.ns.ph
NSns2.cuhk.edu.hk
NSns4.apnic.net
NSph.communitydns.net
SOAph-tld-ns.dot.phsysadmin@domains.ph 2026-04-25 #12

Same first word

mcgrawhill.app
mcgrawhill.cc
mcgrawhill.education
mcgrawhill.com.ph
mcgrawhill.be
mcgrawhill.com.pr
mcgrawhill.ag
mcgrawhill.co.il
mcgrawhill.dk
mcgrawhill.gen.in
mcgrawhill.com.pe
mcgrawhill.eu
mcgrawhill.tv
mcgrawhill.cn
mcgrawhill.co.at
mcgrawhill.me
mcgrawhill.co.uk
mcgrawhill.com
mcgrawhill.pr
mcgrawhill.net
mcgrawhill.us
mcgrawhill.ie
mcgrawhill.mobi
mcgrawhill.it
mcgrawhill.mx
mcgrawhill.fr
mcgrawhill.tw
mcgrawhill.sucks
mcgrawhill.org
mcgrawhill.cx
mcgrawhill.com.ru
mcgrawhill.io
mcgrawhill.ae
mcgrawhill.ca
mcgrawhill.ph
mcgrawhill.biz

DNS History

4 records (4 active, 0 former)

NSpdns85.ultradns.bizpdns85.ultradns.compdns85.ultradns.netpdns85.ultradns.org
●NSpdns85.ultradns.biz2026-04-23 → 2026-04-25 · 2 obs
● 2026-04-23 03:05:58
● 2026-04-25 06:13:04
●NSpdns85.ultradns.com2026-04-23 → 2026-04-25 · 2 obs
● 2026-04-23 03:05:58
● 2026-04-25 06:13:04
●NSpdns85.ultradns.net2026-04-23 → 2026-04-25 · 2 obs
● 2026-04-23 03:05:58
● 2026-04-25 06:13:04
●NSpdns85.ultradns.org2026-04-23 → 2026-04-25 · 2 obs
● 2026-04-23 03:05:58
● 2026-04-25 06:13:04

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ph1.ns.ph, ph.communitydns.net, ns2.cuhk.edu.hk, ns4.apnic.net8 records
mcgrawhill.phpdns85.ultradns.com, pdns85.ultradns.org, pdns85.ultradns.biz, pdns85.ultradns.net-

✅ Authoritative Response

Server:156.154.64.85

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mcgrawhill.ph (unsigned zone)

⏱️ Timing

Total: 849ms | Queries: -

📄 Records

TypeCountSample Data

📌 Glue Records Collected

Total: 8

In-bailiwick: 2 (1.ns.ph, 1.ns.ph)

Out-of-bailiwick: 6 (ph.communitydns.net, ns2.cuhk.edu.hk, ns4.apnic.net...)

Analysis

Name Servers

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

mcgrawhill.ph at least partially shares name servers with other domains, for example shopmcgrawhill.ca, alloyacorp.net, successinhighered.com, mymcgraw-hill.com and connectphysics.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