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384.3 M

Domains known to webXtrend

9.5 M

New domains in the last 30 days

62.5 M

Social media profiles detected

thephysicsbook.com

thephysicsbook.com serves a website of its own over HTTPS and under www. It answers on both IPv4 and IPv6, with a valid TLS certificate.

4,256 other domains share an IP address with it.

The most recent crawl returned the page title “The Physics Book – Lecture Notes, Practice Problems, and Videos” and 87,109 bytes of HTML.

Domain properties

Property Value Explanation
Top-level domain .com Statistics for all domains we know under this TLD.
Has website yes A website is hosted under the domain, which does not redirect to an external domain.
Has MX-record no The domain has an MX record.
External redirect no The domain redirects to another domain.
Redirect to https yes The domain redirects to https.
Redirect to www. yes The domain redirects to www.domain.
Only with www. no The domain can only be reached with the subdomain "www".
Only DNS, no website no There are no A or AAAA records in DNS.
IP-Address Both Shows whether the domain only has IPv4 or IPv6 or both.
SSL-Certificate valid Shows whether the domain has a valid SSL certificate.
Redirects 0 Number of domains that redirect to this domain.
Reverse IP 4,256 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": "thephysicsbook.com"}'

Create a free account Read the API docs

Detected social media networks

No social networks found on this website.

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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

Issuer Google Trust Services
Valid from 10/8/2026
Valid to 1/6/2027
Time until expiry 80 days

Last successful crawl

Title The Physics Book – Lecture Notes, Practice Problems, and Videos
Description (not set)
Content-Length 87,109 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
104.21.45.254 5/8/2026
172.67.221.177 5/8/2026
188.114.96.0 5/1/2026
188.114.97.0 5/1/2026
104.21.45.254 4/3/2026
IPv6 address Last updated
2606:4700:3033:0:0:0:ac43:ddb1 7/4/2026
2606:4700:3034:0:0:0:6815:2dfe 7/4/2026
2606:4700:3032:0:0:0:6815:2dfe 4/3/2026
2606:4700:3036:0:0:0:ac43:ddb1 4/3/2026
2a06:98c1:3120:0:0:0:0:0 3/27/2026
Name server Last updated
glen.ns.cloudflare.com 12/30/2024
wally.ns.cloudflare.com 12/30/2024
ns1.mattwservices.uk 12/9/2023
ns2.mattwservices.uk 12/9/2023
ns3.mattwservices.uk 12/9/2023

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

104.21.45.254 1,067 domains · here since 10/10/2026
Domain On this IP since
zzxby.xyz 10/18/2026
zyra888.xyz 9/22/2026
zxyato.com 9/13/2026
zuloheru.com 9/20/2026
zukafun.asia 9/15/2026
zsvelhartice.cz 9/22/2026
zovasports.site 9/18/2026
zorindel.store 9/16/2026
zone-33store.shop 9/19/2026
zonakee.com 9/19/2026
zk3apkid.com 9/23/2026
zjleuze.com 10/5/2026
and 1,054 more
172.67.221.177 1,067 domains · here since 10/10/2026
Domain On this IP since
zzxby.xyz 10/18/2026
zyra888.xyz 9/22/2026
zxyato.com 9/13/2026
zuloheru.com 9/20/2026
zukafun.asia 9/15/2026
zsvelhartice.cz 9/22/2026
zovasports.site 9/18/2026
zorindel.store 9/16/2026
zone-33store.shop 9/19/2026
zonakee.com 9/19/2026
zk3apkid.com 9/23/2026
zjleuze.com 10/5/2026
and 1,054 more
2606:4700:3033::ac43:ddb1 1,061 domains · here since 10/10/2026
Domain On this IP since
zzxby.xyz 10/18/2026
zyra888.xyz 9/22/2026
zxyato.com 9/13/2026
zuloheru.com 9/20/2026
zukafun.asia 9/15/2026
zsvelhartice.cz 9/22/2026
zovasports.site 9/18/2026
zorindel.store 9/16/2026
zone-33store.shop 9/19/2026
zonakee.com 9/19/2026
zk3apkid.com 9/23/2026
zjleuze.com 10/5/2026
and 1,048 more
2606:4700:3034::6815:2dfe 1,061 domains · here since 10/10/2026
Domain On this IP since
zzxby.xyz 10/18/2026
zyra888.xyz 9/22/2026
zxyato.com 9/13/2026
zuloheru.com 9/20/2026
zukafun.asia 9/15/2026
zsvelhartice.cz 9/22/2026
zovasports.site 9/18/2026
zorindel.store 9/16/2026
zone-33store.shop 9/19/2026
zonakee.com 9/19/2026
zk3apkid.com 9/23/2026
zjleuze.com 10/5/2026
and 1,048 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.