Website reputation report

tandem.net

Last checked 12 hours ago · Point-in-time assessment

● Evidence is limited

What is this website?

Public pages were observed on tandem.net, but their subject was not confidently classified. An About page was also found. The sampled pages were marked as English-language. Recurring page-metadata topics include language, language exchange, native speakers.

No listed local patterns observedHomepage-only analysis is not a malware clearance. Read the scope and findings below.

69/100Safety Score
75%Evidence Confidence
Trust Radar evidence profile Eight evidence dimensions from zero to one hundred. Exact values surround the chart. Threat Intelligence55 Domain History93 Infrastructure92 Website Security82 Security Hygiene45 Transparency57 Reputation50 Operational Stability84
Trust RadarEight observed factors. Select one to inspect its evidence.

How to read this report

Safety Score evaluates observed signals. Evidence Confidence measures how complete, direct, fresh, and consistent those signals are.

No automated scan can guarantee that a website is safe.

Independent evidence brief

What we observed about tandem.net

Updated Oct 2, 2026

The latest scan examined 10 public pages on tandem.net. Website descriptions below come from the site itself. Registration, connection and threat findings were checked separately.

Purpose and visible content

On its About page, the site says: What is Tandem? Find out more about Tandem, the global, mobile-first community that empowers everyone, everywhere to speak any language.

Registrar and domain history

Registered on Oct 2, 2011. Registrar: united-domains GmbH.

Recorded expiry date: Oct 2, 2026. Registry data can change.

Connection and hosting evidence

The checked homepage returned HTTP 200 in about 2000 ms.

A valid TLS certificate was observed, expiring Jan 30, 2027.

Threat checks and score context

External malware-provider coverage was unavailable. The report does not treat this missing check as a clean result.

Safety Score: 69/100. Evidence Confidence: 75%. These measure different things.

Public content profile

Pages reviewed on tandem.net

10 of up to 10 pages

We sampled public pages from this website to understand its subject and contact paths. The titles and short descriptions below come from the website itself. They are not endorsements or independent safety findings.

Tandem Language Exchange App | Find Conversation Exchange PartnersHow does Tandem work? Download the app for free, find your perfect language partner, and start chatting. Practice with native speakers and get fluent fast. About TandemWhat is Tandem? Find out more about Tandem, the global, mobile-first community that empowers everyone, everywhere to speak any language. Contact Us - Tandem Language ExchangeWant to get in touch with the Tandem team? Use the contact form below. FAQ | Tandem - Speak Any LanguageOur app helps you find native speakers of almost any language who want to learn your language in exchange. Practice listening, improve your pronunciation, and learn to speak a fore Blog - Tandem Language Exchange - Speak Any LanguageWelcome to the Tandem blog: your one-stop shop for all the latest news and resources from the coolest language exchange app in the world!! Press on Tandem | Tandem Press KitFor media enquiries, please contact the team on [email protected]. Find A Language Exchange Partner With TandemConversation Exchange Partners Are Waiting For You Wherever You Are. Find A Perfect Language Exchange Partner On Tandem! Download the appDownload the Tandem app! Today is the perfect day to start speaking a new language with native speakers in the largest language exchange community worldwide! Learn Spanish Online With The Tandem App And WebsiteImprove Your Spanish Language With Thousands Of Native Speakers ✓ Best Way To Boost Your Language Skills ✓ Download Online App For Free Learn English Online With The Tandem App And WebsiteLearn The English Language With Thousands Of Native Speakers ✓ Best Way To Improve Your Language Skills ✓ Download Online App For Free

Public page evidence

Topics and keywords observed on tandem.net

12 phrases

These phrases were extracted locally from sampled public page metadata. They are observations, not search-volume or ranking estimates.

languageTitle, H1, Meta description9 sampled pages
language exchangeTitle, H1, Meta description5 sampled pages
native speakersMeta description5 sampled pages
speakTitle, H1, Meta description4 sampled pages
any languageTitle, Meta description3 sampled pages
downloadTitle, Meta description4 sampled pages
speak anyTitle, Meta description3 sampled pages
exchange partnersTitle, H1, Meta description2 sampled pages
freeMeta description3 sampled pages
improveMeta description3 sampled pages
perfectMeta description3 sampled pages
partnerTitle, Meta description2 sampled pages

At a glance

Key findings

✓

Report is current

The displayed evidence comes from the published immutable scan.

i

Confidence is separate

Unavailable evidence is shown as missing and never counted as clean.

!

Verify before sensitive actions

Check the exact URL and context before payments, credentials, or downloads.

Fully explainable

Why this score?

Versioned weights
Threat IntelligenceWeight 25%
55/100

Threat providers were unavailable. The neutral uncertainty baseline is not a clean verdict.

Domain HistoryWeight 10%
93/100

Domain registration age and expiry were checked.

InfrastructureWeight 10%
92/100

Observed DNS records and network address were checked.

Website SecurityWeight 15%
82/100

Observed certificate validity and TLS protocol were checked.

Security HygieneWeight 15%
45/100

Observed security header values were checked for basic protective settings. Empty values, disabled HSTS and unrecognized values receive no credit. This is not a complete browser-policy validation.

TransparencyWeight 5%
57/100

Observed site metadata and About page were checked. Publisher-supplied details are not independently verified.

ReputationWeight 5%
50/100

Popularity is weak context, not proof of safety. Unranked sites use a neutral baseline.

Operational StabilityWeight 15%
84/100

Observed HTTP status and final connection scheme were checked.

Server-side analysis

Automated security checks

Local antivirus and phishing checks

ClamAV · homepage HTMLLocal antivirus is not enabled
Phishing.Database · exact hostnameLocal feed snapshot unavailable

Sampled scripts and pages

Resource antivirus is not enabled

0 resources checked · 27 script links observed on the homepage. Partial resource coverage.

ClamAV inspects the fetched homepage HTML on our server. New scans also sample up to four linked scripts and two collected internal pages, with size and time limits. Scripts are not executed. Other downloads, private server files and logged-in pages remain outside this check. A signature match needs investigation and can be a false positive. No match is not a whole-site safety guarantee.

Exact hostname lookup uses a downloaded Phishing.Database snapshot. It does not send this domain to an external lookup API or mark sibling subdomains as harmful. Not listed does not mean safe. Snapshot age is download age, not proof that every entry was recently revalidated.

Homepage HTML only · Eight local rule families · local-security-v2

Checks use the fetched page and redirect chain. Scripts are not executed, forms are not submitted, and linked files are not downloaded. This is not a malware clearance.

Page resource inventory

Linked scripts27
Inline scripts0
Embedded frames0
External script hosts0

Counts describe the sampled HTML, not every resource loaded by the browser. External resources are common and are not automatically harmful.

No listed local patterns observed. The limited rule set cannot detect every threat or behavior.

External threat intelligence

Provider coverageNot checked

Local checks do not query external reputation databases. An unavailable check is never a clean result.

Registration

Domain information

Public RDAP observation
Canonical domaintandem.net
Registrarunited-domains GmbH
RegisteredOct 2, 2011
Domain age14 years
ExpiresOct 2, 2026
Registry statusesclient transfer prohibited
Report statePublished

Infrastructure

Network & hosting

Observed endpoint, not legal location
IP address18.194.125.160
Autonomous systemUnavailable
Network organizationUnavailable
Observed countryUnavailable
CDNNot detected
Web application firewallNot detected

At a glance

Infrastructure summary

Observed during this scan

A compact view of the connection, DNS and security surface. These observations describe what the scanner could verify at scan time and do not prove ownership or ongoing availability.

HTTP response200 · https://tandem.net/
Endpoint18.194.125.160
NetworkUnavailable
CDN and WAFNot detected · Not detected
DNS surface20 records · 4 nameservers · 5 mail exchangers
Protection signals2 security headers · 1 technologies · DNSSEC unknown

Page telemetry

Observed page statistics

Safe metadata only

These counters describe the fetched response and sampled HTML. Script counts describe references in the markup, not a complete browser network log. Cookie counts cover observed response headers.

Response size280,491 bytes
HTTP check duration2,000 ms
Cookies observed2
Script resources27 · 0 external hosts
Frames and sampled checks0 frames · 0 resources checked

Encrypted transport

TLS certificate

Valid when observed
StatusValid when observed
ProtocolTLSv1.2
IssuercountryName=US, organizationName=Amazon, commonName=Amazon RSA 2048 M01
Valid fromJul 17, 2026
Valid untilJan 30, 2027
Certificate names*.beta.tandem.net · *.internal.tandem.net · *.live.tandem.net · *.ng.tandem.net · *.production.tandem.net · *.staging.tandem.net · *.tandem.net · beta.tandem.net · staging.tandem.net · tandem.net

Resolution

DNS footprint

DNSKEY status unknown

DNSKEY presence does not verify the DNSSEC signature chain. Missing records can mean no record was returned or the lookup was unavailable.

A18.194.125.160TTL —
A63.178.215.25TTL —
NSns-1064.awsdns-05.orgTTL —
NSns-1602.awsdns-08.co.ukTTL —
NSns-491.awsdns-61.comTTL —
NSns-634.awsdns-15.netTTL —
MX1 aspmx.l.google.comTTL —
MX10 alt3.aspmx.l.google.comTTL —
MX10 alt4.aspmx.l.google.comTTL —
MX5 alt1.aspmx.l.google.comTTL —
MX5 alt2.aspmx.l.google.comTTL —
TXTatlassian-domain-verification=r02iIiqML2afyG4ZDCEGIwCwq1JaZsaPjO0G8HNAlVUSd+okPJkp2t1XkkeZY9WqTTL —
TXTatlassian-domain-verification=zDXRFiDOlARS23hPh9zBYHqBEvBTNbXPPOJ6HvI21Mp375ppeFF8wlTSArqySxjyTTL —
TXTdetectify-verification=3bb3733fa578a9360bcfe19b7e9fee7bTTL —
TXTfirebase=tandem-2016TTL —
TXTgoogle-site-verification=DA3pIWDemLaMrUnbPZHYkSAZZNSSDFyo1WJLJzMWWwwTTL —
TXTgoogle-site-verification=sAviufA5PFc4-6X5BeESEly3NdM1SX6VrAehVQCY70YTTL —
TXTgoogle-site-verification=ZlWF1hbV29H-p91yE0kEVd802fGt7yurOGlty60GzoUTTL —
TXTgoogle-site-verification=ZZLnK0gMhhDqDbOdjFnmWXBZE5tjKCEOHPjkrPJDHHUTTL —
TXTv=spf1 ip4:172.217.219.26 ip6:2607:f8b0:4001:c13::1a ip4:173.194.70.27 ip6:2607:f8b0:4003:c0f::1b ip4:142.250.96.27 ip6:2607:f8b0:4023:403::1b ip4:173.194.209.27" " ip6:2607:f8b0:4024:c02::1b ip4:74.125.197.26 ip6:2607:f8b0:400e:c09::1b ip4:13.35.121.74 ip4:13.35.121.104 ip4:13.35.121.67 ip4:13.35.121.48 exists:%{i}._spf.sparkpostmail.com" " ip4:199.255.192.0/22 ip4:199.127.232.0/22 ip4:54.240.0.0/18 ip4:69.169.224.0/20 ip4:23.249.208.0/20 ip4:23.251.224.0/19 ip4:76.223.176.0/20 ip4:54.240.64.0/19 ip4:103.151.192.0/23" " ip4:185.12.80.0/22 ip4:188.172.128.0/20 ip4:192.161.144.0/20 ip4:216.198.0.0/18 ip4:167.89.0.0/17 ip4:208.117.48.0/20 ip4:50.31.32.0/19 ip4:198.37.144.0/20 ip4:198.21.0.0/21 ip4:192.254.112.0/20" " ip4:168.245.0.0/17 ip4:149.72.0.0/16 ip4:35.190.247.0/24 ip4:64.233.160.0/19 ip4:66.102.0.0/20 ip4:66.249.80.0/20 ip4:72.14.192.0/18 ip4:74.125.0.0/16 ip4:108.177.8.0/21 ip4:173.194.0.0/16" " ip4:209.85.128.0/17 ip4:216.58.192.0/19 ip4:216.239.32.0/19 ip6:2001:4860:4000::/36 ip6:2404:6800:4000::/36 ip6:2607:f8b0:4000::/36 ip6:2800:3f0:4000::/36 ip6:2a00:1450:4000::/36" " ip6:2c0f:fb50:4000::/36 ip4:172.217.0.0/19 ip4:172.217.32.0/20 ip4:172.217.128.0/19 ip4:172.217.160.0/20 ip4:172.217.192.0/19 ip4:172.253.56.0/21 ip4:172.253.112.0/20 ip4:108.177.96.0/19" " ip4:35.191.0.0/16 ip4:130.211.0.0/22 ip4:35.190.247.0/24 ip4:64.233.160.0/19 ip4:66.102.0.0/20 ip4:66.249.80.0/20 ip4:72.14.192.0/18 ip4:74.125.0.0/16 ip4:108.177.8.0/21" " ip4:173.194.0.0/16 ip4:209.85.128.0/17 ip4:216.58.192.0/19 ip4:216.239.32.0/19 ip6:2001:4860:4000::/36 ip6:2404:6800:4000::/36 ip6:2607:f8b0:4000::/36 ip6:2800:3f0:4000::/36TTL —

DNS observations · no external lookup API

Domain email protection

Exact-host SPF and DMARC observations help the owner investigate email impersonation risks. They are separate from website malware checks and do not change the Safety Score.

SPFPolicy record observed, not fully validated
DMARCPolicy record observed, not fully validated

What to do next

Review the records with your mail administrator. Inventory legitimate senders and test SPF and DKIM alignment before enforcing a stricter DMARC policy. Fix duplicate records and investigate overly permissive SPF rules.

This bounded check does not send email, probe SMTP, evaluate recursive SPF includes, verify DKIM signatures or apply organizational-domain DMARC inheritance. A missing subdomain record does not prove that no inherited protection exists. A DNS timeout is unknown, not an absent record. A policy record is not proof that messages authenticate successfully.

Responsible disclosure

security.txt

RFC 9116 observation

No readable security.txt file was observed at the standard locations. This is informational and is not evidence of malware.

Browser protections

Security headers

2 observed
content-security-policypresent frame-ancestors 'self' https://app.contentful.com;
x-frame-optionspresent SAMEORIGIN

Response headers

Cookie protections

Passive observation
Cookies observed2
Missing Secure1
Missing HttpOnly2
Missing SameSite1

Only cookie attribute counts are retained. Cookie names and values are never stored. These observations are not proof of compromise and do not independently change the Safety Score.

Detected stack

Technologies

Next.js 96%

Versions are shown only when publicly exposed by the page or response headers. An observed version is not, by itself, proof of a vulnerability.

JavaScript library advisories

JavaScript advisory analysis could not be completed or no eligible script files were sampled. No clean result is implied.

Recommended maintenance checks

Next.jsKeep Next.js and its runtime dependencies current, especially when server-side rendering is enabled.

About this website

What the site says about itself

What is Tandem? Find out more about Tandem, the global, mobile-first community that empowers everyone, everywhere to speak any language.

View the site's About page ↗

This is publisher supplied information. The independent safety findings are shown separately.

Publisher supplied

Public contact details

These details were observed on the website, not independently verified as an active support channel.

Emailpress@tandem.netSource: https://tandem.net/pages/press

Structured facts

Website identity & response

Public page metadata
Page titleTandem Language Exchange App | Find Conversation Exchange Partners
First headingSpeak with Tandem
DescriptionHow does Tandem work? Download the app for free, find your perfect language partner, and start chatting. Practice with native speakers and get fluent fast.
Canonical URLhttps://tandem.net/
Final URLhttps://tandem.net/
HTTP response200 · text/html; charset=utf-8 · 2000 ms
Languageen
Structured typesFAQPage · Question
Faq page detectedhttps://tandem.net/pages/faqPage page detectedhttps://tandem.net/blogAbout page detectedhttps://tandem.net/pages/about-usContact page detectedhttps://tandem.net/pages/contact-us
Local headers.permissions policy present100% evidence confidence
1100% evidence confidence
1100% evidence confidence
1100% evidence confidence
en100% evidence confidence
1100% evidence confidence
missing100% evidence confidence
2100% evidence confidence
Dns consistency.cname present100% evidence confidence
unavailable100% evidence confidence
5100% evidence confidence
4100% evidence confidence
20100% evidence confidence
2100% evidence confidence
1100% evidence confidence
1100% evidence confidence
2100% evidence confidence
Local headers.cors credentials with wildcard100% evidence confidence
Local headers.cors present100% evidence confidence
Local headers.cors wildcard origin100% evidence confidence
Local headers.csp has default src100% evidence confidence
Local headers.csp has object src100% evidence confidence
1100% evidence confidence
Local headers.csp unsafe eval100% evidence confidence
Local headers.csp unsafe inline100% evidence confidence
Local headers.csp wildcard sources100% evidence confidence
Local headers.hsts present100% evidence confidence

Connection path

Redirect chain

0 recorded hops

No redirect hop was recorded for the sampled homepage.

Premium monitoring

Catch downtime and security changes automatically

Regular checks, availability history, and alert emails are reserved for Premium websites. Free reports remain point-in-time scans and do not create recurring server work.

Enable monitoring for this website

Compared with the previous scan

What changed

A comparison will appear after the next completed scan.

Explainable matching

Digital fingerprint

fingerprint-v1
steady-beacon-field-570

Comparable components help find technically related websites. A match does not prove common ownership.

DnsHashed private comparison value
TechnologiesHashed private comparison value

Material changes only

Change history

No meaningful changes recorded yet.

Website icon for tandem.net

Visual evidence

Website screenshot

Screenshot of tandem.net
Earlier browser capture retained because this scan did not produce a usable replacement. It is not fresh scan evidence.

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Questions about tandem.net

FAQ

Still have questions? Contact us →
Is tandem.net safe to visit?

The latest Safety Score is 69/100 with 75% Evidence Confidence. This is a point-in-time assessment of observed technical signals, not a guarantee. Check the exact address and avoid entering payment details if anything looks unusual.

Did the scan detect malware on tandem.net?

External threat-provider coverage was unavailable for this scan, so malware status is unverified.

When was tandem.net registered?

The public registry record shows Oct 2, 2011. Registration details may be privacy-protected or updated later.

Did tandem.net have a valid TLS certificate?

The scanner observed a valid TLS certificate using TLSv1.2. A valid certificate alone does not establish that the site is safe.

How does tandem.net describe itself?

The website's About page describes its purpose in the report above. This is publisher-supplied information and is separate from independent security findings.

Can a paid listing change this website's score?

No. Premium placement and owner-supplied pages are labelled separately. Technical evidence, the Safety Score and moderation decisions remain independent.