www.falstad.com - urlscan.io

Summary

This website contacted 2 IPs in 1 countries across 3 domains to perform 6 HTTP transactions. The main IP is 45.43.3.15, located in Dallas, United States and belongs to TIER-NET, US. The main domain is www.falstad.com. The Cisco Umbrella rank of the primary domain is 903037.

This is the only time www.falstad.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
5	45.43.3.15 45.43.3.15	397423 (TIER-NET) (TIER-NET)
1 1	63.251.163.239 63.251.163.239	14744 (INTERNAP-...) (INTERNAP-BLOCK-4)
1	63.251.163.214 63.251.163.214	14744 (INTERNAP-...) (INTERNAP-BLOCK-4)
6	2

5 45.43.3.15 (Dallas, United States)

ASN397423 (TIER-NET, US)
PTR: ln15.myplesk.cc

www.falstad.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 63.251.163.239 (United States) 1 redirects

ASN14744 (INTERNAP-BLOCK-4, US)

img.groundspeak.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 63.251.163.214 (United States)

ASN14744 (INTERNAP-BLOCK-4, US)
PTR: img.geocaching.com

img.geocaching.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
5	falstad.com www.falstad.com — Cisco Umbrella Rank: 903037	106 KB
1	geocaching.com img.geocaching.com — Cisco Umbrella Rank: 328216	7 KB
1	groundspeak.com 1 redirects img.groundspeak.com	210 B
6	3

	Domain	Requested by
5	www.falstad.com	www.falstad.com
1	img.geocaching.com	www.falstad.com
1	img.groundspeak.com	1 redirects
6	3

This site contains links to these domains. Also see Links.

Domain
www.geocaching.com
play.google.com

Subject Issuer	Validity	Valid

This page contains 1 frames:

Primary Page: http://www.falstad.com/
Frame ID: 1733EC11126FF98E477C9E1730EEEE52
Requests: 6 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

Paul Falstad

Page Statistics

6
Requests

0 %
HTTPS

0 %
IPv6

3
Domains

3
Subdomains

2
IPs

1
Countries

113 kB
Transfer

113 kB
Size

0
Cookies

2 Outgoing links

These are links going to different origins than the main page.

URL: http://www.geocaching.com/profile/?guid=ec0bad6f-f419-4f0a-af3d-fdb4ee805a9e

Search URL Search Domain Scan URL

URL: https://play.google.com/store/apps/details?id=com.falstad.megaphotofree
Title: Mega Photo for Android

Search URL Search Domain Scan URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 4

http://img.groundspeak.com/stats/img.aspx?txt=geocaching.com&uid=ec0bad6f-f419-4f0a-af3d-fdb4ee805a9e&bg=1 HTTP 302
https://img.geocaching.com/stats/img.aspx?txt=geocaching.com&uid=ec0bad6f-f419-4f0a-af3d-fdb4ee805a9e&bg=1

6 HTTP transactions
0 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H/1.1 200
OK Primary Request / Show response
www.falstad.com/ 1 KB
798 B 303ms
118ms Document
text/html 45.43.3.15
TIER-NET

General

Check archive.org

Show headers Download Go to

Full URL: http://www.falstad.com/
Protocol: HTTP/1.1
Server: 45.43.3.15 Dallas, United States, ASN397423 (TIER-NET, US),
Reverse DNS: ln15.myplesk.cc
Software: nginx / PleskLin
Resource Hash: 85bf3a5d6b35a4e347fe4b85c0a7ae9578f16a5acfb6451fb5cfd87ab4b9317c

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36
accept-language: de-DE,de;q=0.9

Response headers

Connection: keep-alive
Content-Encoding: gzip
Content-Type: text/html
Date: Fri, 01 Dec 2023 14:25:15 GMT
ETag: W/"60bd9823-485"
Last-Modified: Mon, 07 Jun 2021 03:53:07 GMT
Server: nginx
Transfer-Encoding: chunked
Vary: Accept-Encoding
X-Powered-By: PleskLin

GET
H/1.1 200
OK maze_small.gif
www.falstad.com/ 20 KB
20 KB 118ms
118ms Image
image/gif 45.43.3.15
TIER-NET

General

Check archive.org

Show headers Download Go to Show image

Full URL: http://www.falstad.com/maze_small.gif
Requested by: Host: www.falstad.com
URL: http://www.falstad.com/
Protocol: HTTP/1.1
Server: 45.43.3.15 Dallas, United States, ASN397423 (TIER-NET, US),
Reverse DNS: ln15.myplesk.cc
Software: nginx / PleskLin
Resource Hash: dee958e2c3d1f841aa9c7da7fc3d995cd9b31c454a8efb0119c456fe312ed40f

Request headers

accept-language: de-DE,de;q=0.9
Referer: http://www.falstad.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36

Response headers

Date: Fri, 01 Dec 2023 14:25:15 GMT
Last-Modified: Wed, 07 Feb 2007 04:59:11 GMT
Server: nginx
ETag: "45c95c9f-506b"
X-Powered-By: PleskLin
Content-Type: image/gif
Connection: keep-alive
Accept-Ranges: bytes
Content-Length: 20587

GET
H/1.1 200
OK loadedstring_small.gif
www.falstad.com/ 10 KB
11 KB 234ms
116ms Image
image/gif 45.43.3.15
TIER-NET

General

Check archive.org

Show headers Download Go to Show image

Full URL: http://www.falstad.com/loadedstring_small.gif
Requested by: Host: www.falstad.com
URL: http://www.falstad.com/
Protocol: HTTP/1.1
Server: 45.43.3.15 Dallas, United States, ASN397423 (TIER-NET, US),
Reverse DNS: ln15.myplesk.cc
Software: nginx / PleskLin
Resource Hash: b7ab2eb0746c47b59946955a599b36d249d25639d39566af535d541e34c7564e

Request headers

accept-language: de-DE,de;q=0.9
Referer: http://www.falstad.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36

Response headers

Date: Fri, 01 Dec 2023 14:25:15 GMT
Last-Modified: Wed, 07 Feb 2007 04:59:09 GMT
Server: nginx
ETag: "45c95c9d-2957"
X-Powered-By: PleskLin
Content-Type: image/gif
Connection: keep-alive
Accept-Ranges: bytes
Content-Length: 10583

GET
H/1.1 200
OK membrane_small.gif
www.falstad.com/ 64 KB
64 KB 234ms
116ms Image
image/gif 45.43.3.15
TIER-NET

General

Check archive.org

Show headers Download Go to Show image

Full URL: http://www.falstad.com/membrane_small.gif
Requested by: Host: www.falstad.com
URL: http://www.falstad.com/
Protocol: HTTP/1.1
Server: 45.43.3.15 Dallas, United States, ASN397423 (TIER-NET, US),
Reverse DNS: ln15.myplesk.cc
Software: nginx / PleskLin
Resource Hash: 20013c55b7028d462bfd07d9299d7414bf55f3a016f1242637fd17f2b16609cb

Request headers

accept-language: de-DE,de;q=0.9
Referer: http://www.falstad.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36

Response headers

Date: Fri, 01 Dec 2023 14:25:15 GMT
Last-Modified: Wed, 07 Feb 2007 04:59:13 GMT
Server: nginx
ETag: "45c95ca1-ff49"
X-Powered-By: PleskLin
Content-Type: image/gif
Connection: keep-alive
Accept-Ranges: bytes
Content-Length: 65353

GET
H/1.1 200
OK ripple_small.gif
www.falstad.com/ 10 KB
10 KB 247ms
122ms Image
image/gif 45.43.3.15
TIER-NET

General

Check archive.org

Show headers Download Go to Show image

Full URL: http://www.falstad.com/ripple_small.gif
Requested by: Host: www.falstad.com
URL: http://www.falstad.com/
Protocol: HTTP/1.1
Server: 45.43.3.15 Dallas, United States, ASN397423 (TIER-NET, US),
Reverse DNS: ln15.myplesk.cc
Software: nginx / PleskLin
Resource Hash: 90c6c18610aee1e4b233971e806798f34fc1e9751458309de8ce0ff422672119

Request headers

accept-language: de-DE,de;q=0.9
Referer: http://www.falstad.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36

Response headers

Date: Fri, 01 Dec 2023 14:25:15 GMT
Last-Modified: Wed, 07 Feb 2007 04:59:35 GMT
Server: nginx
ETag: "45c95cb7-28d3"
X-Powered-By: PleskLin
Content-Type: image/gif
Connection: keep-alive
Accept-Ranges: bytes
Content-Length: 10451

GET
H/1.1

200
OK

img.aspx
img.geocaching.com/stats/
Redirect Chain

http://img.groundspeak.com/stats/img.aspx?txt=geocaching.com&uid=ec0bad6f-f419-4f0a-af3d-fdb4ee805a9e&bg=1
https://img.geocaching.com/stats/img.aspx?txt=geocaching.com&uid=ec0bad6f-f419-4f0a-af3d-fdb4ee805a9e&bg=1

7 KB
7 KB

827ms
178ms

Image
image/png

63.251.163.214
INTERNAP-BLOCK-4

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://img.geocaching.com/stats/img.aspx?txt=geocaching.com&uid=ec0bad6f-f419-4f0a-af3d-fdb4ee805a9e&bg=1

Requested by

Host: www.falstad.com
URL: http://www.falstad.com/

Protocol

HTTP/1.1

Server

63.251.163.214 , United States, ASN14744 (INTERNAP-BLOCK-4, US),

Reverse DNS

img.geocaching.com

Software

/ ASP.NET

Resource Hash

95cdb4c6f0ad53571b20121dd61c44766c9d4a9cbeb0a3fcf91a247802d41b6f

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	SAMEORIGIN
X-Xss-Protection	1

Request headers

accept-language: de-DE,de;q=0.9
Referer: http://www.falstad.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36

Response headers

Pragma: no-cache
Date: Fri, 01 Dec 2023 14:25:15 GMT
X-Content-Type-Options: nosniff
X-Powered-By: ASP.NET
X-Frame-Options: SAMEORIGIN
Content-Type: image/png
Cache-Control: no-cache
Content-Length: 7092
X-XSS-Protection: 1
Expires: -1

Redirect headers

Location: https://img.geocaching.com/stats/img.aspx?txt=geocaching.com&uid=ec0bad6f-f419-4f0a-af3d-fdb4ee805a9e&bg=1
Server: BigIP
Connection: Keep-Alive
Content-Length: 0

Verdicts & Comments Add Verdict or Comment

0 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

0 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

img.geocaching.com
img.groundspeak.com
www.falstad.com
45.43.3.15
63.251.163.214
63.251.163.239
20013c55b7028d462bfd07d9299d7414bf55f3a016f1242637fd17f2b16609cb
85bf3a5d6b35a4e347fe4b85c0a7ae9578f16a5acfb6451fb5cfd87ab4b9317c
90c6c18610aee1e4b233971e806798f34fc1e9751458309de8ce0ff422672119
95cdb4c6f0ad53571b20121dd61c44766c9d4a9cbeb0a3fcf91a247802d41b6f
b7ab2eb0746c47b59946955a599b36d249d25639d39566af535d541e34c7564e
dee958e2c3d1f841aa9c7da7fc3d995cd9b31c454a8efb0119c456fe312ed40f

www.falstad.com Open in urlscan Pro 45.43.3.15 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page Title

Page Statistics

6 Requests

0 %HTTPS

0 %IPv6

3 Domains

3 Subdomains

2 IPs

1 Countries

113 kBTransfer

113 kBSize

0 Cookies

2 Outgoing links

Redirected requests

6 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 0 data transactions

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Redirect headers

Verdicts & Comments Add Verdict or Comment

0 JavaScript Global Variables

0 Cookies

Indicators

www.falstad.com Open in urlscan Pro
45.43.3.15 Public Scan

Screenshot
Live screenshot

Full Image

6
Requests

0 %
HTTPS

0 %
IPv6

3
Domains

3
Subdomains

2
IPs

1
Countries

113 kB
Transfer

113 kB
Size

0
Cookies

6 HTTP transactions
0 data transactions