URL: https://coronavirus-update.us/
Submission: On April 07 via api from US

Summary

This website contacted 2 IPs in 1 countries across 1 domains to perform 14 HTTP transactions. The main IP is 92.118.188.158, located in United States and belongs to ASIANET, GB. The main domain is coronavirus-update.us.
TLS certificate: Issued by Let's Encrypt Authority X3 on April 4th 2020. Valid for: 3 months.
This is the only time coronavirus-update.us was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
14 92.118.188.158 209484 (ASIANET)
14 2
Apex Domain
Subdomains
Transfer
14 coronavirus-update.us
coronavirus-update.us
564 KB
14 1
Domain Requested by
14 coronavirus-update.us coronavirus-update.us
14 1

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

Domain
wordpress.org
Subject Issuer Validity Valid
coronavirus-update.us
Let's Encrypt Authority X3
2020-04-04 -
2020-07-03
3 months crt.sh

This page contains 1 frames:

Primary Page: https://coronavirus-update.us/
Frame ID: A60217F730228329A7F2FE2F28C3D710
Requests: 15 HTTP requests in this frame

Screenshot


Detected technologies

Overall confidence: 100%
Detected patterns
  • html /<link rel=["']stylesheet["'] [^>]+\/wp-(?:content|includes)\//i
  • script /\/wp-(?:content|includes)\//i
  • meta generator /^WordPress ?([\d.]+)?/i
  • headers link /rel="https:\/\/api\.w\.org\/"/i
  • html /<!-- Analytics by WP-Statistics v([\d.]+) -/i

Overall confidence: 100%
Detected patterns
  • html /<link rel=["']stylesheet["'] [^>]+\/wp-(?:content|includes)\//i
  • script /\/wp-(?:content|includes)\//i
  • meta generator /^WordPress ?([\d.]+)?/i
  • headers link /rel="https:\/\/api\.w\.org\/"/i
  • html /<!-- Analytics by WP-Statistics v([\d.]+) -/i

Overall confidence: 100%
Detected patterns
  • html /<link rel=["']stylesheet["'] [^>]+\/wp-(?:content|includes)\//i
  • script /\/wp-(?:content|includes)\//i
  • meta generator /^WordPress ?([\d.]+)?/i
  • headers link /rel="https:\/\/api\.w\.org\/"/i
  • html /<!-- Analytics by WP-Statistics v([\d.]+) -/i

Overall confidence: 100%
Detected patterns
  • headers server /nginx(?:\/([\d.]+))?/i

Overall confidence: 100%
Detected patterns
  • html /<!-- Analytics by WP-Statistics v([\d.]+) -/i

Page Statistics

14
Requests

100 %
HTTPS

0 %
IPv6

1
Domains

1
Subdomains

2
IPs

1
Countries

565 kB
Transfer

582 kB
Size

0
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

14 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request /
coronavirus-update.us/
31 KB
9 KB
Document
General
Full URL
https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 / PHP/7.3.16
Resource Hash
69f42dca4cd99330cc9e118af250d00e915710e33eb6f1f0ea27a0c56add58af

Request headers

Host
coronavirus-update.us
Connection
keep-alive
Pragma
no-cache
Cache-Control
no-cache
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
document
Accept
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site
none
Sec-Fetch-Mode
navigate
Sec-Fetch-User
?1
Accept-Encoding
gzip, deflate, br
Accept-Language
en-US
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
document

Response headers

Server
nginx/1.16.1
Date
Tue, 07 Apr 2020 05:14:50 GMT
Content-Type
text/html; charset=UTF-8
Transfer-Encoding
chunked
Connection
keep-alive
X-Powered-By
PHP/7.3.16
Link
<https://coronavirus-update.us/wp-json/>; rel="https://api.w.org/"
Content-Encoding
gzip
style.min.css
coronavirus-update.us/wp-includes/css/dist/block-library/
52 KB
53 KB
Stylesheet
General
Full URL
https://coronavirus-update.us/wp-includes/css/dist/block-library/style.min.css?ver=5.4
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
d02934f0a5b722dbd076dda86e34373e037158a672a8a10409bcbdb5a9040b42

Request headers

Referer
https://coronavirus-update.us/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
style

Response headers

Date
Tue, 07 Apr 2020 05:14:50 GMT
Last-Modified
Tue, 10 Mar 2020 15:42:14 GMT
Server
nginx/1.16.1
ETag
"5e67b556-d0f1"
Content-Type
text/css
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
53489
Expires
Thu, 07 May 2020 05:14:50 GMT
style.css
coronavirus-update.us/wp-content/themes/twentytwenty/
118 KB
118 KB
Stylesheet
General
Full URL
https://coronavirus-update.us/wp-content/themes/twentytwenty/style.css?ver=1.2
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
bb4e13622ad550e047f9f120c443092df6dca84dc920afbce67b659bb00f031b

Request headers

Referer
https://coronavirus-update.us/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
style

Response headers

Date
Tue, 07 Apr 2020 05:14:50 GMT
Last-Modified
Tue, 31 Mar 2020 19:18:06 GMT
Server
nginx/1.16.1
ETag
"5e83976e-1d74f"
Content-Type
text/css
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
120655
Expires
Thu, 07 May 2020 05:14:50 GMT
index.js
coronavirus-update.us/wp-content/themes/twentytwenty/assets/js/
25 KB
25 KB
Script
General
Full URL
https://coronavirus-update.us/wp-content/themes/twentytwenty/assets/js/index.js?ver=1.2
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
d8c5d7e0d56720864abaa8eca08063553ccf883774f999ab9cfe24fde5650389

Request headers

Referer
https://coronavirus-update.us/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
script

Response headers

Date
Tue, 07 Apr 2020 05:14:50 GMT
Last-Modified
Wed, 29 Jan 2020 00:45:18 GMT
Server
nginx/1.16.1
ETag
"5e30d59e-6236"
Content-Type
application/javascript
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
25142
Expires
Thu, 07 May 2020 05:14:50 GMT
cvct-world.png
coronavirus-update.us/wp-content/plugins/corona-virus-cases-tracker//assets/images/
290 B
600 B
Image
General
Full URL
https://coronavirus-update.us/wp-content/plugins/corona-virus-cases-tracker//assets/images/cvct-world.png
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
d02c4105072db4cf8c5f28c88b27e972d9a3a11094cf003e50070456f32b5f4f

Request headers

Referer
https://coronavirus-update.us/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
image

Response headers

Date
Tue, 07 Apr 2020 05:14:51 GMT
Last-Modified
Sat, 04 Apr 2020 05:34:35 GMT
Server
nginx/1.16.1
ETag
"5e881c6b-122"
Content-Type
image/png
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
290
Expires
Thu, 07 May 2020 05:14:51 GMT
cvct-tables.css
coronavirus-update.us/wp-content/plugins/corona-virus-cases-tracker/assets/css/
0
305 B
Stylesheet
General
Full URL
https://coronavirus-update.us/wp-content/plugins/corona-virus-cases-tracker/assets/css/cvct-tables.css?ver=5.4
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

Referer
https://coronavirus-update.us/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
style

Response headers

Date
Tue, 07 Apr 2020 05:14:51 GMT
Last-Modified
Sat, 04 Apr 2020 05:34:35 GMT
Server
nginx/1.16.1
ETag
"5e881c6b-0"
Content-Type
text/css
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
0
Expires
Thu, 07 May 2020 05:14:51 GMT
wp-embed.min.js
coronavirus-update.us/wp-includes/js/
1 KB
2 KB
Script
General
Full URL
https://coronavirus-update.us/wp-includes/js/wp-embed.min.js?ver=5.4
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
6ebcda7a3a41ef97f0b4071160ceb1020e540fdc0f790079a5c2ef01ab654fe0

Request headers

Referer
https://coronavirus-update.us/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
script

Response headers

Date
Tue, 07 Apr 2020 05:14:51 GMT
Last-Modified
Sat, 26 Oct 2019 00:17:07 GMT
Server
nginx/1.16.1
ETag
"5db39083-59a"
Content-Type
application/javascript
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
1434
Expires
Thu, 07 May 2020 05:14:51 GMT
jquery.js
coronavirus-update.us/wp-includes/js/jquery/
95 KB
95 KB
Script
General
Full URL
https://coronavirus-update.us/wp-includes/js/jquery/jquery.js?ver=1.12.4-wp
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
1db21d816296e6939ba1f42962496e4134ae2b0081e26970864c40c6d02bb1df

Request headers

Referer
https://coronavirus-update.us/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
script

Response headers

Date
Tue, 07 Apr 2020 05:14:51 GMT
Last-Modified
Fri, 17 May 2019 04:25:54 GMT
Server
nginx/1.16.1
ETag
"5cde37d2-17a69"
Content-Type
application/javascript
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
96873
Expires
Thu, 07 May 2020 05:14:51 GMT
jquery-migrate.min.js
coronavirus-update.us/wp-includes/js/jquery/
10 KB
10 KB
Script
General
Full URL
https://coronavirus-update.us/wp-includes/js/jquery/jquery-migrate.min.js?ver=1.4.1
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
48eb8b500ae6a38617b5738d2b3faec481922a7782246e31d2755c034a45cd5d

Request headers

Referer
https://coronavirus-update.us/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
script

Response headers

Date
Tue, 07 Apr 2020 05:14:51 GMT
Last-Modified
Fri, 20 May 2016 06:11:28 GMT
Server
nginx/1.16.1
ETag
"573eaa90-2748"
Content-Type
application/javascript
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
10056
Expires
Thu, 07 May 2020 05:14:51 GMT
ResizeSensor.min.js
coronavirus-update.us/wp-content/plugins/corona-virus-cases-tracker/assets/js/css-resizer/
6 KB
6 KB
Script
General
Full URL
https://coronavirus-update.us/wp-content/plugins/corona-virus-cases-tracker/assets/js/css-resizer/ResizeSensor.min.js?ver=1.3
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
25c01ef167d977a51671314398947f978c949faa41d5d85a1968d608c271638f

Request headers

Referer
https://coronavirus-update.us/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
script

Response headers

Date
Tue, 07 Apr 2020 05:14:51 GMT
Last-Modified
Sat, 04 Apr 2020 05:34:35 GMT
Server
nginx/1.16.1
ETag
"5e881c6b-1788"
Content-Type
application/javascript
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
6024
Expires
Thu, 07 May 2020 05:14:51 GMT
ElementQueries.min.js
coronavirus-update.us/wp-content/plugins/corona-virus-cases-tracker/assets/js/css-resizer/
9 KB
10 KB
Script
General
Full URL
https://coronavirus-update.us/wp-content/plugins/corona-virus-cases-tracker/assets/js/css-resizer/ElementQueries.min.js?ver=1.3
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
2eaf47e345f2749bb5f9f19697c54bade2a1c3f3985747e7187ff9a561e2d542

Request headers

Referer
https://coronavirus-update.us/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
script

Response headers

Date
Tue, 07 Apr 2020 05:14:51 GMT
Last-Modified
Sat, 04 Apr 2020 05:34:35 GMT
Server
nginx/1.16.1
ETag
"5e881c6b-258c"
Content-Type
application/javascript
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
9612
Expires
Thu, 07 May 2020 05:14:51 GMT
wp-emoji-release.min.js
coronavirus-update.us/wp-includes/js/
14 KB
14 KB
Script
General
Full URL
https://coronavirus-update.us/wp-includes/js/wp-emoji-release.min.js?ver=5.4
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
96d33f532112177ede6bf262dcf6d0140dbe29f05a4595d17b0be4743205b5ea

Request headers

Referer
https://coronavirus-update.us/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
script

Response headers

Date
Tue, 07 Apr 2020 05:14:53 GMT
Last-Modified
Tue, 05 Nov 2019 22:04:02 GMT
Server
nginx/1.16.1
ETag
"5dc1f1d2-364d"
Content-Type
application/javascript
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
13901
Expires
Thu, 07 May 2020 05:14:53 GMT
print.css
coronavirus-update.us/wp-content/themes/twentytwenty/
3 KB
3 KB
Stylesheet
General
Full URL
https://coronavirus-update.us/wp-content/themes/twentytwenty/print.css?ver=1.2
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
b3e410433d8b8584dfb1292e8fec02646c7fdfe7986b51e37da8be9d5c893798

Request headers

Referer
https://coronavirus-update.us/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Dest
style

Response headers

Date
Tue, 07 Apr 2020 05:14:51 GMT
Last-Modified
Mon, 11 Nov 2019 12:29:01 GMT
Server
nginx/1.16.1
ETag
"5dc9540d-a0e"
Content-Type
text/css
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
2574
Expires
Thu, 07 May 2020 05:14:51 GMT
Inter-upright-var.woff2
coronavirus-update.us/wp-content/themes/twentytwenty/assets/fonts/inter/
219 KB
219 KB
Font
General
Full URL
https://coronavirus-update.us/wp-content/themes/twentytwenty/assets/fonts/inter/Inter-upright-var.woff2
Requested by
Host: coronavirus-update.us
URL: https://coronavirus-update.us/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
92.118.188.158 , United States, ASN209484 (ASIANET, GB),
Reverse DNS
Software
nginx/1.16.1 /
Resource Hash
e03c2df7ef439d2708bbc168a21c0a00da63e5664d286120c994c39644addd03

Request headers

Referer
https://coronavirus-update.us/wp-content/themes/twentytwenty/style.css?ver=1.2
Origin
https://coronavirus-update.us
Sec-Fetch-Dest
font
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

Date
Tue, 07 Apr 2020 05:14:51 GMT
Last-Modified
Tue, 22 Oct 2019 18:27:08 GMT
Server
nginx/1.16.1
ETag
"5daf49fc-36a94"
Content-Type
font/woff2
Cache-Control
max-age=2592000
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
223892
Expires
Thu, 07 May 2020 05:14:51 GMT
truncated
/
808 B
808 B
Font
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
2314a04de305a6bcf2bc9d951d3a0596084649fce911b7e4e085d0c69ac6985b

Request headers

Origin
https://coronavirus-update.us
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

Content-Type
application/font-woff2;charset=utf-8

Verdicts & Comments Add Verdict or Comment

14 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.

object| onformdata object| onpointerrawupdate object| _wpemojiSettings object| twentytwenty function| twentytwentyDomReady function| twentytwentyToggleAttribute function| twentytwentyMenuToggle function| twentytwentyFindParents object| wp undefined| $ function| jQuery function| ResizeSensor function| ElementQueries object| twemoji

0 Cookies

1 Console Messages

Source Level URL
Text
console-api log URL: https://coronavirus-update.us/wp-includes/js/jquery/jquery-migrate.min.js?ver=1.4.1(Line 2)
Message:
JQMIGRATE: Migrate is installed, version 1.4.1