Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Probed from Singapore, Singapore

301 Moved Permanently

Checks

5 PASS 3 REVIEW 1 FIX

CDN & Delivery

Action

No CDN detected

FIX

No CDN detected

A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.

No CDN detected

Consider using a CDN to improve global delivery speed and reduce origin load.

Redirect Chain

2 redirect(s), 18 ms total

REVIEW

2 redirect(s), 18 ms total

2 redirects before reaching final URL

Each redirect adds latency. Try to minimize the chain to 1 hop.

WWW normalization redirect

https://mediawiki.org

8 ms · HTTP/1.1

301

https://www.mediawiki.org/

7 ms · HTTP/1.1

301

https://www.mediawiki.org/wiki/MediaWiki

3 ms · HTTP/1.1 FINAL

#	URL	Status	Time	Protocol	Server
1	https://mediawiki.org	301	8 ms	HTTP/1.1	mw-web.codfw.main-859b768cdd-lhjq2
2	https://www.mediawiki.org/	301	7 ms	HTTP/1.1	mw-web.codfw.main-6bd5cbd568-tsdn6
3	https://www.mediawiki.org/wiki/MediaWiki	200	3 ms	HTTP/1.1	ATS/9.2.13

See the visual redirect chain in the HTTP Probe tab →

Each redirect adds latency. Try to minimize the chain to 1 hop.

Why this matters

Redirect chain — each hop adds latency; combine into one redirect where possible.

Source: Google Search Central / web.dev

Crawlability

robots.txt present, no sitemap

REVIEW

robots.txt present, no sitemap

robots.txt is present

Got: 10240 bytes

No sitemap.xml found

A sitemap helps search engines discover and index your pages more efficiently.

robots.txt does not reference a sitemap

Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

A sitemap helps search engines discover and index your pages more efficiently.

Why this matters

No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.

Learn more ▾

A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.

Source: sitemaps.org / Google Search Central

Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Why this matters

robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.

Source: sitemaps.org

robots.txt 200 OK

Size 10240 B Sitemaps referenced 0 User-agents IsraBot, DOC, Download Ninja, *, Mediapartners-Google*, Orthogaffe, UbiCrawler, HTTrack, Zao, MSIECrawler, WebCopier, WebZIP, ZyBORG, WebStripper, larbin, NPBot, sitecheck.internetseer.com, SiteSnagger, linko, SemrushBot, wget, MJ12bot, Teleport, Microsoft.URL.Control, Xenu, libwww, grub-client, WebReaper, Zealbot, Fetch, TeleportPro, fast, Offline Explorer, k2spider Blocking No — crawling allowed

# robots.txt for http://www.wikipedia.org/ and friends
#
# Please note: There are a lot of pages on this site, and there are
# some misbehaved spiders out there that go _way_ too fast. If you're
# irresponsible, your access to the site may be blocked.
#

# Observed spamming large amounts of https://en.wikipedia.org/?curid=NNNNNN
# and ignoring 429 ratelimit responses, claims to respect robots:
# http://mj12bot.com/
User-agent: MJ12bot
Disallow: /

# advertising-related bots:
User-agent: Mediapartners-Google*
Disallow: /

# Wikipedia work bots:
User-agent: IsraBot
Disallow:

User-agent: Orthogaffe
Disallow:

# Crawlers that are kind enough to obey, but which we'd rather not have
# unless they're feeding search engines.
User-agent: UbiCrawler
Disallow: /

User-agent: DOC
Disallow: /

User-agent: Zao
Disallow: /

# Some bots are known to be trouble, particularly those designed to copy
# entire sites. Please obey robots.txt.
User-agent: sitecheck.internetseer.com
Disallow: /

User-agent: Zealbot
Disallow: /

User-agent: MSIECrawler
Disallow: /

User-agent: SiteSnagger
Disallow: /

User-agent: WebStripper
Disallow: /

User-agent: WebCopier
Disallow: /

User-agent: Fetch
Disallow: /

User-agent: Offline Explorer
Disallow: /

User-agent: Teleport
Disallow: /

User-agent: TeleportPro
Disallow: /

User-agent: WebZIP
Disallow: /

User-agent: linko
Disallow: /

User-agent: HTTrack
Disallow: /

User-agent: Microsoft.URL.Control
Disallow: /

User-agent: Xenu
Disallow: /

User-agent: larbin
Disallow: /

User-agent: libwww
Disallow: /

User-agent: ZyBORG
Disallow: /

User-agent: Download Ninja
Disallow: /

# Misbehaving, requests much too fast
User-agent: fast
Disallow: /

# Sorry, wget in its recursive mode is a frequent problem.
# Please read the man page and use it properly; there is a
# --wait option you can use to set the delay between hits,
# for instance.
User-agent: wget
Disallow: /

# The 'grub' distributed client has been *very* poorly behaved.
User-agent: grub-client
Disallow: /

# Doesn't follow robots.txt anyway, but...
User-agent: k2spider
Disallow: /

# Hits many times per second, not acceptable
# http://www.nameprotect.com/botinfo.html
User-agent: NPBot
Disallow: /

# A capture bot, downloads gazillions of pages with no public benefit
# http://www.webreaper.net/
User-agent: WebReaper
Disallow: /

# Per their statement, semrushbot respects crawl-delay directives
# We want them to overall stay within reasonable request rates to
# the backend (20 rps); keeping in mind that the crawl-delay will
# be applied by site and not globally by the bot, 5 seconds seem
# like a reasonable approximation
User-agent: SemrushBot
Crawl-delay: 5

#
# Friendly, low-speed bots are welcome viewing article pages, but not
# dynamically-generated pages please.
#
# Inktomi's "Slurp" can read a minimum delay between hits; if your
# bot supports such a thing using the 'Crawl-delay' or another
# instruction, please let us know.
#
# There is a special exception for API mobileview to allow dynamic
# mobile web & app views to load section content.
# These views aren't HTTP-cached but use parser cache aggressively
# and don't expose Special-pages and other uncached content.
#
# Another exception is for REST API documentation, located at
# /api/rest_v1/?doc.
#
User-agent: *
Allow: /w/api.php?action=mobileview&
Allow: /w/load.php?
Allow: /api/rest_v1/?doc
Allow: /w/rest.php/site/v1/sitemap
Disallow: /w/
Disallow: /api/
Disallow: /trap/
Disallow: /wiki/Special:
Disallow: /wiki/Spezial:
Disallow: /wiki/Spesial:
Disallow: /wiki/Special%3A
Disallow: /wiki/Spezial%3A
Disallow: /wiki/Spesial%3A
#
# ar:
Disallow: /wiki/%D8%AE%D8%A7%D8%B5:Search
Disallow: /wiki/%D8%AE%D8%A7%D8%B5%3ASearch
#
# dewiki:
# T6937
# sensible deletion and meta user discussion pages:
Disallow: /wiki/Wikipedia:L%C3%B6schkandidaten/
Disallow: /wiki/Wikipedia:Löschkandidaten/
Disallow: /wiki/Wikipedia:Vandalensperrung/
Disallow: /wiki/Wikipedia:Benutzersperrung/
Disallow: /wiki/Wikipedia:Vermittlungsausschuss/
Disallow: /wiki/Wikipedia:Administratoren/Probleme/
Disallow: /wiki/Wikipedia:Adminkandidaturen/
Disallow: /wiki/Wikipedia:Qualitätssicherung/
Disallow: /wiki/Wikipedia:Qualit%C3%A4tssicherung/
# 4937#5
Disallow: /wiki/Wikipedia:Vandalismusmeldung/
Disallow: /wiki/Wikipedia:Gesperrte_Lemmata/
Disallow: /wiki/Wikipedia:Löschprüfung/
Disallow: /wiki/Wikipedia:L%C3%B6schprüfung/
Disallow: /wiki/Wikipedia:Administratoren/Notizen/
Disallow: /wiki/Wikipedia:Schiedsgericht/Anfragen/
Disallow: /wiki/Wikipedia:L%C3%B6schpr%C3%BCfung/
# T14111
Disallow: /wiki/Wikipedia:Checkuser/
Disallow: /wiki/Wikipedia_Diskussion:Checkuser/
Disallow: /wiki/Wikipedia_Diskussion:Adminkandidaturen/
# T15961
Disallow: /wiki/Wikipedia:Spam-Blacklist-Log
Disallow: /wiki/Wikipedia%3ASpam-Blacklist-Log
Disallow: /wiki/Wikipedia_Diskussion:Spam-Blacklist-Log
Disallow: /wiki/Wikipedia_Diskussion%3ASpam-Blacklist-Log
#
# enwiki:
# Folks get annoyed when VfD discussions end up the number 1 google hit for
# their name. See T6776
Disallow: /wiki/Wikipedia:Articles_for_deletion/
Disallow: /wiki/Wikipedia%3AArticles_for_deletion/
Disallow: /wiki/Wikipedia:Votes_for_deletion/
Disallow: /wiki/Wikipedia%3AVotes_for_deletion/
Disallow: /wiki/Wikipedia:Pages_for_deletion/
Disallow: /wiki/Wikipedia%3APages_for_deletion/
Disallow: /wiki/Wikipedia:Miscellany_for_deletion/
Disallow: /wiki/Wikipedia%3AMiscellany_for_deletion/
Disallow: /wiki/Wikipedia:Miscellaneous_deletion/
Disallow: /wiki/Wikipedia%3AMiscellaneous_deletion/
Disallow: /wiki/Wikipedia:Copyright_problems
Disallow: /wiki/Wikipedia%3ACopyright_problems
Disallow: /wiki/Wikipedia:Protected_titles/
Disallow: /wiki/Wikipedia%3AProtected_titles/
# T15398
Disallow: /wiki/Wikipedia:WikiProject_Spam/
Disallow: /wiki/Wikipedia%3AWikiProject_Spam/
# T16075
Disallow: /wiki/MediaWiki:Spam-blacklist
Disallow: /wiki/MediaWiki%3ASpam-blacklist
Disallow: /wiki/MediaWiki_talk:Spam-blacklist
Disallow: /wiki/MediaWiki_talk%3ASpam-blacklist
# T13261
Disallow: /wiki/Wikipedia:Requests_for_arbitration/
Disallow: /wiki/Wikipedia%3ARequests_for_arbitration/
Disallow: /wiki/Wikipedia:Requests_for_comment/
Disallow: /wiki/Wikipedia%3ARequests_for_comment/
Disallow: /wiki/Wikipedia:Requests_for_adminship/
Disallow: /wiki/Wikipedia%3ARequests_for_adminship/
# T12288
Disallow: /wiki/Wikipedia_talk:Articles_for_deletion/
Disallow: /wiki/Wikipedia_talk%3AArticles_for_deletion/
Disallow: /wiki/Wikipedia_talk:Votes_for_deletion/
Disallow: /wiki/Wikipedia_talk%3AVotes_for_deletion/
Disallow: /wiki/Wikipedia_talk:Pages_for_deletion/
Disallow: /wiki/Wikipedia_talk%3APages_for_deletion/
Disallow: /wiki/Wikipedia_talk:Miscellany_for_deletion/
Disallow: /wiki/Wikipedia_talk%3AMiscellany_for_deletion/
Disallow: /wiki/Wikipedia_talk:Miscellaneous_deletion/
Disallow: /wiki/Wikipedia_talk%3AMiscellaneous_deletion/
# T16793
Disallow: /wiki/Wikipedia:Changing_username
Disallow: /wiki/Wikipedia%3AChanging_username
Disallow: /wiki/Wikipedia:Changing_username/
Disallow: /wiki/Wikipedia%3AChanging_username/
Disallow: /wiki/Wikipedia_talk:Changing_username
Disallow: /wiki/Wikipedia_talk%3AChanging_username
Disallow: /wiki/Wikipedia_talk:Changing_username/
Disallow: /wiki/Wikipedia_talk%3AChanging_username/
#
# eswiki:
# T8746
Disallow: /wiki/Wikipedia:Consultas_de_borrado/
Disallow: /wiki/Wikipedia%3AConsultas_de_borrado/
#
# fiwiki:
# T10695
Disallow: /wiki/Wikipedia:Poistettavat_sivut
Disallow: /wiki/K%C3%A4ytt%C3%A4j%C3%A4:
Disallow: /wiki/Käyttäjä:
Disallow: /wiki/Keskustelu_k%C3%A4ytt%C3%A4j%C3%A4st%C3%A4:
Disallow: /wiki/Keskustelu_käyttäjästä:
Disallow: /wiki/Wikipedia:Yll%C3%A4pit%C3%A4j%C3%A4t/
Disallow: /wiki/Wikipedia:Ylläpitäjät/
#
# hewiki:
Disallow: /wiki/%D7%9E%D7%99%D7%95%D7%97%D7%93:Search
Disallow: /wiki/%D7%9E%D7%99%D7%95%D7%97%D7%93%3ASearch
#T11517
Disallow: /wiki/ויקיפדיה:רשימת_מועמדים_למחיקה/
Disallow: /wiki/ויקיפדיה%3Aרשימת_מועמדים_למחיקה/
Disallow: /wiki/%D7%95%D7%99%D7%A7%D7%99%D7%A4%D7%93%D7%99%D7%94:%D7%A8%D7%A9%D7%99%D7%9E%D7%AA_%D7%9E%D7%95%D7%A2%D7%9E%D7%93%D7%99%D7%9D_%D7%9C%D7%9E%D7%97%D7%99%D7%A7%D7%94/
Disallow: /wiki/%D7%95%D7%99%D7%A7%D7%99%D7%A4%D7%93%D7%99%D7%94%3A%D7%A8%D7%A9%D7%99%D7%9E%D7%AA_%D7%9E%D7%95%D7%A2%D7%9E%D7%93%D7%99%D7%9D_%D7%9C%D7%9E%D7%97%D7%99%D7%A7%D7%94/
Disallow: /wiki/ויקיפדיה:ערכים_לא_קיימים_ומוגנים
Disallow: /wiki/ויקיפדיה%3Aערכים_לא_קיימים_ומוגנים
Disallow: /wiki/%D7%95%D7%99%D7%A7%D7%99%D7%A4%D7%93%D7%99%D7%94:%D7%A2%D7%A8%D7%9B%D7%99%D7%9D_%D7%9C%D7%90_%D7%A7%D7%99%D7%99%D7%9E%D7%99%D7%9D_%D7%95%D7%9E%D7%95%D7%92%D7%A0%D7%99%D7%9D
Disallow: /wiki/%D7%95%D7%99%D7%A7%D7%99%D7%A4%D7%93%D7%99%D7%94%3A%D7%A2%D7%A8%D7%9B%D7%99%D7%9D_%D7%9C%D7%90_%D7%A7%D7%99%D7%99%D7%9E%D7%99%D7%9D_%D7%95%D7%9E%D7%95%D7%92%D7%A0%D7%99%D7%9D
Disallow: /wiki/ויקיפדיה:דפים_לא_קיימים_ומוגנים
Disallow: /wiki/ויקיפדיה%3Aדפים_לא_קיימים_ומוגנים
Disallow: /wiki/%D7%95%D7%99%D7%A7%D7%99%D7%A4%D7%93%D7%99%D7%94:%D7%93%D7%A4%D7%99%D7%9D_%D7%9C%D7%90_%D7%A7%D7%99%D7%99%D7%9E%D7%99%D7%9D_%D7%95%D7%9E%D7%95%D7%92%D7%A0%D7%99%D7%9D
Disallow: /wiki/%D7%95%D7%99%D7%A7%D7%99%D7%A4%D7%93%D7%99%D7%94%3A%D7%93%D7%A4%D7%99%D7%9D_%D7%9C%D7%90_%D7%A7%D7%99%D7%99%D7%9E%D7%99%D7%9D_%D7%95%D7%9E%D7%95%D7%92%D7%A0%D7%99%D7%9D
#
# huwiki:
Disallow: /wiki/Speci%C3%A1lis:Search
Disallow: /wiki/Speci%C3%A1lis%3ASearch
#
# itwiki:
# T7545
Disallow: /wiki/Wikipedia:Pagine_da_cancellare
Disallow: /wiki/Wikipedia%3APagine_da_cancellare
Disallow: /wiki/Wikipedia:Utenti_problematici
Disallow: /wiki/Wikipedia%3AUtenti_problematici
Disallow: /wiki/Wikipedia:Vandalismi_in_corso
Disallow: /wiki/Wikipedia%3AVandalismi_in_corso
Disallow: /wiki/Wikipedia:Amministratori
Disallow: /wiki/Wikipedia%3AAmministratori
Disallow: /wiki/Wikipedia:Proposte_di_cancellazione_semplificata
Disallow: /wiki/Wikipedia%3AProposte_di_cancellazione_semplificata
Disallow: /wiki/Categoria:Da_cancellare_subito
Disallow: /wiki/Categoria%3ADa_cancellare_subito
Disallow: /wiki/Wikipedia:Sospette_violazioni_di_copyright
Disallow: /wiki/Wikipedia%3ASospette_violazioni_di_copyright
Disallow: /wiki/C

sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

TLS Certificate Expiry & Recommendations

76 days until leaf cert expires — 3 issues to address

REVIEW

Certificate validity

days left

0d 30d 60d 90d+

Recommended actions

Submit your domain to hstspreload.org to be added to the Chrome preload list
Enable DNSSEC on your domain for DNS spoofing protection
Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy

A+

DNS Records

1 A records, 4 ms lookup

PASS

1 A records, 4 ms lookup

Resolves to 1 IPv4 address(es)

Got: 103.102.166.224

Single A record — no DNS redundancy

Multiple A records provide failover if one server goes down.

Has 1 IPv6 (AAAA) record(s)

Got: 2001:df2:e500:ed1a::1

3 nameserver(s) configured

Got: ns0.wikimedia.org, ns1.wikimedia.org, ns2.wikimedia.org

2 mail exchanger(s) configured

CAA records not checked

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

SPF record present in TXT

DNS resolution time: 4 ms

Got: 4 ms

A	103.102.166.224
AAAA	2001:df2:e500:ed1a::1
CNAME	—
NS	ns0.wikimedia.org, ns1.wikimedia.org, ns2.wikimedia.org
MX	10 mx-in2001.wikimedia.org 10 mx-in1001.wikimedia.org
TXT	SPF v=spf1 include:wikimedia.org ~all google-site-verification=SB70h2VwbTUOmrd3YTPxnT4gjjX5u_g8MAxkIaCW03c
CAA	Lookup not available with standard resolver

Resolved in 4 ms

Multiple A records provide failover if one server goes down.

Why this matters

Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.

Learn more ▾

Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.

Source: SRE practice / DNS architecture

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A+

IPv6 Readiness

IPv6 reachable (1 ms)

PASS

IPv6 reachable (1 ms)

IPv6 is configured and reachable at 2001:df2:e500:ed1a::1

Got: 1 ms connect

IPv6 Ready

AAAA Records 2001:df2:e500:ed1a::1 Connection Reachable (1 ms)

A+

URL Variants

www/non-www, trailing slash, HTTP→HTTPS

PASS

www/non-www, trailing slash, HTTP→HTTPS

www/non-www redirect configured correctly (preferred: non-www)

HTTP correctly 301-redirects to HTTPS

www / non-www

301https://www.mediawiki.org/

200https://mediawiki.org/

Preferred variant: non-www

HTTP → HTTPS

301http://mediawiki.org/ → https://mediawiki.org/

Consistent

A+

Domain Intelligence

mediawiki.org — via MarkMonitor Inc., 23 years old

PASS

mediawiki.org — via MarkMonitor Inc., 23 years old

Domain registered until Aug 9, 2026 (3 months remaining)

DNSSEC is not enabled

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Registrar: MarkMonitor Inc.

Registrar lock is NOT enabled

The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.

Domain expiry

55 days

August 9, 2026

SSL certificate

76 days

Issued by Let's Encrypt

Domain age

23 years

Registered August 9, 2003

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2001:df2:e500:ed1a::1

Registrar

MarkMonitor Inc.

Unlocked 3 NS records

Expiry timeline

Today

+1 year

Domain expiry SSL expiry Danger zone (≤30 days)

Recommended actions

Renew the domain or enable auto-renewal to prevent accidental expiry
Enable DNSSEC to protect visitors from DNS spoofing
Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers

Registrar MarkMonitor Inc.

Created August 9, 2003 (23 years ago)

Expires August 9, 2026 (3 months)

Last Updated July 13, 2025

Name Servers ns0.wikimedia.org, ns1.wikimedia.org, ns2.wikimedia.org

DNSSEC Not enabled

Hosting

IP Address 2001:df2:e500:ed1a::1

Data source: rdap (0.8s)

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Why this matters

Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.

Learn more ▾

DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.

Source: ICANN / RFC 4033

The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.

Why this matters

Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.

Learn more ▾

Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.

Source: ICANN / domain-security best practice

A+

HTTP Probe Timing

Total 10 ms — DNS, TCP, TLS, TTFB, content transfer breakdown

PASS

DNS Lookup

4 ms

TCP Connect

1 ms

TLS Handshake

4 ms

Time to First Byte

10 ms

Total Time

10 ms

Connection waterfall

DNS Lookup 4 ms TCP Connect 1 ms TLS Handshake 4 ms Server Processing 1 ms Content Transfer 0 ms

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.