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82
Total
65
DNS
95
Email
81
Security
65
Network
100
Availability
Domainfluentu.com
IPv44
IPv60
MX records5
StatusActive
Domain technical report

Learn a language online with authentic videos | FluentU

fluentu.com

Want to master a new language fast? Discover the ultimate hack: binge TV clips, movie scenes & music videos with subtitles that make learning a breeze.

Generated: 2026-08-10T13:52:54-05:00 · Cached result

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IPv44
IPv60
MX5
NS4

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

4 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

4 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

!
DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

✓
CAA policy5 / 5 pts · Dns

Certificate authority restriction.

!
DNS propagation0 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

5 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

✓
DKIM20 / 20 pts · Mail

A DKIM selector was verified.

✓
MTA-STS5 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

199 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers16 / 35 pts · Security

4 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: server-3-162-163-83.ord56.r.cloudfront.net

✓
IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

!
IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓
HTTP response40 / 40 pts · Availability

HTTP/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

4 record(s)
3.162.163.83
3.162.163.3
3.162.163.41
3.162.163.129

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

5 record(s)
40 aspmx2.googlemail.com.
20 alt1.aspmx.l.google.com.
10 aspmx.l.google.com.
50 aspmx3.googlemail.com.
30 alt2.aspmx.l.google.com.

TXT

6 record(s)
"google-site-verification=W1P_msJ21dZbYzn9XV2sSYUClXmn-I87PtgZdhIrvIw"
"google-site-verification=tjB9d7bD7navivfObMkwk_FNZsKf595G8iKFrYuo8Ho"
"v=spf1 include:_spf.google.com include:amazonses.com -all"
"facebook-domain-verification=bp2vp1e6cj5ed4g30jkdgt0riud77j"
"google-site-verification=SpEAZ82yvfDK4in6esHWzNbwLi2S4QmpYvPRZk4Jyh4"
"google-site-verification=uT2Bt1bm14dHvb8fbDZn5DX5leueBAUZ3_t7JxWc55M"

NS

4 record(s)
ns-1030.awsdns-00.org.
ns-376.awsdns-47.com.
ns-933.awsdns-52.net.
ns-1752.awsdns-27.co.uk.

SOA

1 record(s)
ns-376.awsdns-47.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400

CAA

3 record(s)
0 issue "amazontrust.com"
0 issue "letsencrypt.org"
0 issue "sectigo.com"

DS

0 record(s)
—

Not configured

DNSKEY

3 record(s)
256 3 13 Vl6trRqM3HBmSPRHss24EXqjxLhsBYeHgNLsYN8TnWK89bUXPrBjsIZm SKdM4zMDceLbDQj2in2DaNCljj3mmw==
256 3 13 0CVTvkXPQbHoOLY3rE7Yt98W7ddJPiGEGidoZxwV1bdt/wHml4RkLbda 5sPbKCSvLBovWCAVq/eqFlm5qPiXxw==
257 3 13 wfb8wQbUypaPTXYVTLDL/HkXJBxLQQDNcJCG5QNRHSDKw2h5r+YRLTaR +VZR09vsw+iN7D/U7ZXce4shIb1Gyg==

RRSIG

3 record(s)
DNSKEY 13 2 3600 20260811020000 20260810150000 21704 fluentu.com. O3JTlJDeQUO6mWGytmq0HBeZksHD4PPW2OJjfkCJ83NdMaazlN8RPwkM JGorIjJUIlnz/mOk6RS4ysXkSNncPg==
A 13 2 60 20260810195343 20260810175243 62610 fluentu.com. rBtnVJXs5MB4sYu4CcQkg7NQ2uzg9BFWfCsJ0Cf42SWeEh9kjnOUeKYX f3IHFz1JuhJAsroNw9O9pbcglWjbzA==
NS 13 2 172800 20260812183849 20260810163849 62610 fluentu.com. EScKLVADojVTGQ3vQM399EAzNjXzimVASEUM36YaYpXb2UXS+qM24bKf zq6oHxXZTX7iGLNFs9pfWpLcD8SVKw==

NSEC

0 record(s)
—

Not configured

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 include:_spf.google.com include:amazonses.com -all

DMARC

Configured
v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email; pct=100;

DKIM

Selector google
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC3s2xeYIxPoSph42hPdyk1hMQBuyZjIsMy8Ju9lKnLsAqwkLssAbIUdEAHblw7Vta+R4p3QaC7WYvr8mV2a13SiSNizaDzgjDYKj9MlIBFCcUBZcVl5XTQe9r3tIG1+rFhZmiSN5ydN6K4y3UGO49wFtzjiQ1t0xGrFVKQWiTuPwIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Learn a language online with authentic videos | FluentU
Description
Want to master a new language fast? Discover the ultimate hack: binge TV clips, movie scenes & music videos with subtitles that make learning a breeze.
Final URL
https://fluentu.com/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://fluentu.com/
Version
3
Server
Apache
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Amazon
CN
fluentu.com
Valid from
2026-01-27T18:00:00-06:00
Valid until
2027-02-25T17:59:59-06:00
Days remaining
199
Protocol
TLSv1.3
Cipher
TLS_AES_128_GCM_SHA256

Security headers

4 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
—
Permissions PolicyNot detected
—
Cross-Origin-Opener-PolicyNot detected
—
Cross-Origin-Embedder-PolicyNot detected
—
Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Review
!
Differences detected

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
54.192.100.19, 54.192.100.24, 54.192.100.34, 54.192.100.5
115,40 ms
Cloudflare
1.1.1.1
3.162.163.129, 3.162.163.3, 3.162.163.41, 3.162.163.83
62,24 ms
Quad9
9.9.9.9
52.84.199.19, 52.84.199.41, 52.84.199.79, 52.84.199.93
92,97 ms
OpenDNS
208.67.222.222
54.192.100.19, 54.192.100.24, 54.192.100.34, 54.192.100.5
155,72 ms
AdGuard
94.140.14.14
54.192.100.19, 54.192.100.24, 54.192.100.34, 54.192.100.5
157,84 ms

IP, geolocation and ASNAssociated network information

3.162.163.83

No data
success
No
country
region
city
asn
organization
isp

3.162.163.3

No data
success
No
country
region
city
asn
organization
isp

3.162.163.41

No data
success
No
country
region
city
asn
organization
isp

3.162.163.129

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

aspmx2.googlemail.com

Port 25: Closed/unreachable - 1.3 ms - 
Port 465: Closed/unreachable - 4001.5 ms - 
Port 587: Closed/unreachable - 4021.5 ms -

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