testprepden.com

Get an email when its DNS, website or certificate changes.

testprepden.com carries DNS records but serves no website. It has MX records for mail.

2,100 other domains share an IP address with it.

The most recent crawl returned the page title “Test Prep Den — Free SAT, ACT, and AP Study Guides” and 13,612 bytes of HTML.

Domain properties

Property	Value	Explanation
Top-level domain	.com	Statistics for all domains we know under this TLD.
Has website	no	A website is hosted under the domain, which does not redirect to an external domain.
Has MX-record	yes	The domain has an MX record.
External redirect	no	The domain redirects to another domain.
Redirect to https	no	The domain redirects to https.
Redirect to www.	no	The domain redirects to www.domain.
Only with www.	no	The domain can only be reached with the subdomain "www".
Only DNS, no website	yes	There are no A or AAAA records in DNS.
IP-Address	servfail	Shows whether the domain only has IPv4 or IPv6 or both.
SSL-Certificate	no certificate	Shows whether the domain has a valid SSL certificate.
Redirects	0	Number of domains that redirect to this domain.
Reverse IP	2,100	Number of domains with the same IP(s).

This data through the API

The data on this page is also available as JSON: /lookup for the key facts, /reverseip, /redirect and /similar for the lists, and /dnshistory with Basic and Premium. A free account comes with an API key and 100 calls a day.

curl -X POST https://api.webxtrend.com/v1.0/lookup \
  -H 'Content-Type: application/json' \
  -d '{"token": "YOUR_TOKEN", "query": "testprepden.com"}'

Create a free account Read the API docs

Similar websites

Website	Similarity
marlowworks.online Marlow Works — Free AP & SAT study resources Free AP and SAT study resources for high-school students—courses, practice questions, and study tools.	87 %
studyfox.org StudyFox · Free Study Material for School Free study material for school by Daniel Johnson: courses in math, science, English, and history, plus AP courses from AP U.S. History and AP World History t...	84 %
latestexampapers.com AP Past Papers, FRQs & Scoring Guidelines Browse AP past papers, free-response questions, scoring guidelines and student samples for 40 courses. Filter every course by exam year and resource type.	84 %
prepwisecourse.com PrepWise — Smarter Practice. Stronger Scores. Master AP Microeconomics, AP Macroeconomics and AP Statistics with exam-style questions, full-length mock exams and unit-level analytics. Plans from $29 a mo...	84 %
prepgo.com AP Exam Prep Platform - AP Study Guides & Practice \| PrepGo PrepGo is an AP exam prep platform with expert-verified study guides, flashcards, AP-style quizzes, and full-length mock exams, organized by unit and topic.	83 %
slyacademy.com Free Study Guides, Past Papers & Exam Tips – Sly Academy Access free study guides, solved past papers & expert exam‑day tips. Join 100 000+ students mastering AP, IB, SAT & more—start now.	83 %
testpestai.com TestPest AI: Free AP®, SAT® & ACT® Practice with an AI Tutor Free, gamified AP, SAT, and ACT practice tests with instant AI explanations, FRQ grading, multiplayer review games, streaks, XP, and a study-buddy pet.	83 %
lattice.study lattice.study — Free AP Study Platform \| AI Tutor, Concept Maps, FRQ Grading Free AP study platform covering 18 courses — AP World History, APUSH, AP Euro, AP Human Geo, AP Gov, AP Psych, AP Macro, AP Micro, AP Statistics, AP Biology,...	83 %
oneprep.com Free Digital SAT Prep, Practice Tests & Questions \| OnePrep Free Digital SAT prep with 4,000+ practice questions, full-length adaptive practice tests, score analytics, and instant AI explanations. Plus ACT and AP prep.	82 %
bclearns.com BCLearns	82 %
nxght.top Nxght Academic — Peer Tutoring & School Study Network Community platform for music streaming, unblocked games, real-time chat, and methods.	82 %
beaststudy.com Free Study Games Online — K-12 & AP Review Games Play 800+ free study games for Math, Science, History, English & AP exams. 33 courses, 5 game modes, no signup. Start reviewing now.	82 %
bestprepclasses.com Best Prep Classes Princeton Review COURSES For	82 %
testwizard.com TestWizard \| Assign online homework, quizzes, and reviews. TestWizard provides precise online control over the administration of exams, quizzes, and homework to your classroom. Teachers can upload or create their cla...	81 %
shrutam.com Free Accessible US K-12 & College Prep \| Texas Standards \| Shrutam Free, accessible K-12 & college prep for US students. Aligned to TEKS, Common Core, NGSS, AP, SAT/ACT. WCAG 2.1 AA, audio lessons. Always free, no ads. Built...	81 %
teachingapscience.com Teaching AP® Science - Resources By Kristi Schertz - kristi@teachingapscience.com Resources By Kristi Schertz -- kristi@teachingapscience.com	81 %
crampilot.com CramPilot: Turn anything into a study system. In seconds. The AI study app that turns notes, lectures, and textbooks into flashcards, quizzes, and study plans. Built for SAT, ACT, AP, and college exams.	81 %
getstudybuddy.io StudyBuddy - Grades that make sense See what matters, skip the rest. Real-time grades, a What-If calculator, and a calendar that actually loads - your complete academic dashboard, on your phone.	81 %
studysparkstutoring.com StudySparks Tutoring \| Math, AP Prep & Skill Building	81 %
connectprep.com SAT, ACT & Test Prep Tutoring in CT, NY & NJ \| ConnectPrep 1-on-1 SAT, ACT, AP, and graduate test prep from ConnectPrep's expert tutors — online or in person. Personalized plans and proven results. Book free.	80 %

Websites whose start page offers something similar, found by comparing the text of their start pages, across languages. Near-identical copies, parking pages and error pages are left out. The full list of up to 100 comes through the API: similar websites.

Last SSL certificate

No certificate data available for this domain.

Last successful crawl

Title	Test Prep Den — Free SAT, ACT, and AP Study Guides
Description	Free, structured study resources for US high school students preparing for the AP exams, SAT, and ACT. Per-course study guides, annotated FRQ walkthroughs, scoring-rubric breakdowns, and practice questions.
Content-Length	13,612 bytes

Title and description as published by the page itself in its own <title> and <meta name="description"> tags.

DNS history

IPv4 address	Last updated
104.21.71.16	7/8/2026
172.67.168.254	7/8/2026

IPv6 address	Last updated
2606:4700:3033:0:0:0:ac43:a8fe	7/8/2026
2606:4700:3037:0:0:0:6815:4710	7/8/2026

Mail server	Priority	Last updated
route1.mx.cloudflare.net	37	9/13/2026
route2.mx.cloudflare.net	48	9/13/2026
route3.mx.cloudflare.net	88	9/13/2026

Name server	Last updated
hugh.ns.cloudflare.com	7/8/2026
melody.ns.cloudflare.com	7/8/2026

The five most recent states of each record type. The full history comes through the API: DNS history.

Most recent redirect domains

No domains found.

Reverse IP neighbours

2606:4700:3033::ac43:a8fe 1,050 domains · here since 9/20/2026

Domain	On this IP since
zybrik-path.click	9/19/2026
zxclink.me	9/13/2026
zpwqsoepes.top	10/9/2026
zoneclash.com	9/22/2026
zonclubv.com	10/16/2026
zojisushis.us	9/19/2026
zjzhongfeng.cn	9/28/2026
ziwei028.com	9/19/2026
zinnercircle.com	10/9/2026
ziekteverzekeringspanje.com	9/13/2026
zhinanwan.com	9/17/2026
zg2car.com	9/20/2026
and 1,037 more

2606:4700:3037::6815:4710 1,050 domains · here since 9/20/2026

Domain	On this IP since
zybrik-path.click	9/19/2026
zxclink.me	9/13/2026
zpwqsoepes.top	10/9/2026
zoneclash.com	9/22/2026
zonclubv.com	10/16/2026
zojisushis.us	9/19/2026
zjzhongfeng.cn	9/28/2026
ziwei028.com	9/19/2026
zinnercircle.com	10/9/2026
ziekteverzekeringspanje.com	9/13/2026
zhinanwan.com	9/17/2026
zg2car.com	9/20/2026
and 1,037 more

Sharing an address does not always mean sharing a server: on a CDN or a large hosting platform, millions of unrelated domains answer on the same few addresses. We measured how far that goes in Half the web sits on 276 IP addresses. The complete list of neighbours, also for an IP address, comes through the API: reverse IP lookup.

Dive into our data, search now!