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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
85
GRADE
B
FIX
0
REVIEW
4
PASS
5
INFO
0
Probed from Santa Clara, United Stated
200 OK
Checks
9
5 PASS 4 REVIEW
B
DNS Records
1 A records, 387 ms lookup
REVIEW
1 A records, 387 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 192.133.11.1
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
No NS records found
Info::
No MX records — email not configured via DNS
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
No SPF record found in TXT records
SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.
Warning::
DNS resolution is slow (387 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 387 ms
A192.133.11.1
AAAA
CNAME
NS
MX
TXT
CAALookup not available with standard resolver
Resolved in 387 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.

SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.

Why this matters

Without SPF, receiving servers can't validate sending IPs — your domain is easier to spoof in phishing.

Learn more

SPF complements DMARC. Both should be published. SPF records list authorized sending IPs (e.g., `v=spf1 include:_spf.google.com ~all` for Google Workspace). After publishing, verify in Google Postmaster Tools or mxtoolbox.

Source: RFC 7208 (SPF)

Slow DNS adds latency to every page load. Consider a faster DNS provider.

Why this matters

DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.

Source: DNS performance benchmarks

C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

B
Crawlability
robots.txt present, no sitemap
REVIEW
robots.txt present, no sitemap
Info::
robots.txt is present
Got: 10240 bytes
Info::
No sitemap.xml found
A sitemap helps search engines discover and index your pages more efficiently.
Info::
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 Brandwatch, Apexoo, BacklinkCrawler, BLEXBot, FrontPage, Iblog, Anarchie, crawler.feedback, DIIbot, Extractor, Humanlinks, Larbin, Discobot, LexiBot, InternetSeer, Joomla, Litemage_walker, MarkMonitor, Microsoft URL Control, Dragonfly, Jorgee, Mata Hari, Navroad, cognitiveseo, Custo, Digincore, Foobot, ips-agent, Extreme Picture Finder, Microsoft Data Access, Brandprotect, Jyxobot, Kenjin Spider, LinqiaScrapeBot, lwp-request, Metauri, ASPSeek, Asterias, DatabaseDriverMysqli, Gigablast, JustView, LinkWalker, Lmspider, EasyDL, FemtosearchBot, Id-search, DomainStatsBot, ECCP/1.0, Evil, Iskanie, Abonti, HMView, HTTP::Lite, LeechFTP, LinkpadBot, lwp-trivial, Dirbuster, BackWeb, demandbase-bot, IndeedBot, Magnet, internetVista monitor, Dotbot, 360Spider, AllSubmitter, Go!Zilla, backlink-check, BuiltBotTough, GetRight, Indy Library, Intelliseek, BetaBot, BuiltWith, BunnySlippers, DataCha0s, Hloader, Lipperhey, ChinaClaw, Cloud mapping, EMail Siphon, Haansoft, Heritrix, JamesBOT, Acunetix, AlphaBot, CATExplorador, Curious, Demon, BlowFish, DTS Agent, Ebingbong, fq, HTTrack, Backlink-Ceck, Buddy, Deusu, GridBot, instabid, Mag-Net, BDCbot, FDM, LinqiaRSSBot, Net Vampire, Go-Ahead-Got-It, JennyBot, Mojeek, 80legs, Collector, Disco, EyeNetIE, Ezooms, Grafula, HTMLparser, MarkWatch, FlashGet, Kozmosbot, Calculon, CherryPicker, Claritybot, CopyRightCheck, DomainAppender, Exabot, Fimap, ADmantX, Bigfoot, DigitalPebble, ExtractorPro, Bolt, Boardreader, Gotit, HybridBot, InfoNaviRobot, Meanpathbot, AiHitBot, Download Wonder, Express WebPictures, LinkextractorPro, LinkScan, NearSite, netEstate NE Crawler, autoemailspider, Discoverybot, GoZilla, HEADMasterSEO, magpie-crawler, MIIxpc, MS Web Services Client Protocol, IlseBot, Lftp, Attach, Flunky, Keyword Density, Likse, ExtLinksBot, MSIECrawler, DnyzBot, Fyrebot, Gigabot, G-i-g-a-b-o-t, IstellaBot, LinksManager, AhrefsBot, BBBike, Crescent, EirGrabber, IDBot, Ltx71, AfD-Verbotsverfahren, Majestic12, NetAnts, BuzzSumo, CheeseBot, EroCrawler, GT::WWW, Craftbot, HaosouSpider, Image Sucker, Barkrowler, Drip, JikeSpider, LeechGet, LWP::Simple, BotALot, DBLBot, Lanshanbot, Mass Downloader, MauiBot, Msrabot, Aboundex, GrabNet, InfoTekies, LinqiaMetadataDownloaderBot, Morfeus Fucking Scanner, NetSpider, Alexibot, Blow, Harvest, Nessus, Libwhisker, Badass, Devil, FHscan, Grabber, Alligator, BackStreet, BDFetch, Black Hole, Cosmos, Getintent, MegaIndex.ru, NetMechanic, AIBOT, Cegbfeieh, coccocbot-web, Genieo, IRLbot, Lightspeedsystems, Nameprotect, NetLyzer, BlackWidow, CrazyWebCrawler, GrapeFX, JOC Web Spider, Aipbot, CSHttp, eCatch, Ecxi, Netcraft, BatchFTP, Bitacle, Bubing, EMail Wolf, JetCar, 404checker, Copyscape, Havij, Bullseye, com.plumanalytics, evc-batch, GetWeb, Internet Ninja, BackDoorBot, Cogentbot, Freeuploader, Image Fetch, Linkdexbot, MIDown tool, Nettrack, InterGET, MSFrontPage, Bandit, crawler4j, GrapeshotCrawler, Iria, Jbrofuzz, MJ12bot, 404enemy, DittoSpyder, GalaxyBot, Name Intelligence, CCBot, Cliqzbot, Copier, DomainSigmaCrawler, Firefox/7.0, Masscan, CazoodleBot, Chlooe, GermCrawler, LibWeb, mediawords, MFC_Tear_Sample, Needle, Battleztar Bazinga, LNSpiderguy, muhstik-scan, DomainCrawler, Blackboard, Mail.RU_Bot, Mister PiX, Musobot Blocking No — crawling allowed
### Version Information #

###################################################

### Version: V3.2018.05.828

### Updated: Tue May  8 11:37:04 SAST 2018

### Bad Bot Count: 527

###################################################

### Version Information ##


User-agent: 360Spider

Disallow:/

User-agent: 404checker

Disallow:/

User-agent: 404enemy

Disallow:/

User-agent: 80legs

Disallow:/

User-agent: Abonti

Disallow:/

User-agent: Aboundex

Disallow:/

User-agent: Acunetix

Disallow:/

User-agent: ADmantX

Disallow:/

User-agent: AfD-Verbotsverfahren

Disallow:/

User-agent: AhrefsBot

Disallow:/

User-agent: AIBOT

Disallow:/

User-agent: AiHitBot

Disallow:/

User-agent: Aipbot

Disallow:/

User-agent: Alexibot

Disallow:/

User-agent: Alligator

Disallow:/

User-agent: AllSubmitter

Disallow:/

User-agent: AlphaBot

Disallow:/

User-agent: Anarchie

Disallow:/

User-agent: Apexoo

Disallow:/

User-agent: ASPSeek

Disallow:/

User-agent: Asterias

Disallow:/

User-agent: Attach

Disallow:/

User-agent: autoemailspider

Disallow:/

User-agent: BackDoorBot

Disallow:/

User-agent: Backlink-Ceck

Disallow:/

User-agent: backlink-check

Disallow:/

User-agent: BacklinkCrawler

Disallow:/

User-agent: BackStreet

Disallow:/

User-agent: BackWeb

Disallow:/

User-agent: Badass

Disallow:/

User-agent: Bandit

Disallow:/

User-agent: Barkrowler

Disallow:/

User-agent: BatchFTP

Disallow:/

User-agent: Battleztar Bazinga

Disallow:/

User-agent: BBBike

Disallow:/

User-agent: BDCbot

Disallow:/

User-agent: BDFetch

Disallow:/

User-agent: BetaBot

Disallow:/

User-agent: Bigfoot

Disallow:/

User-agent: Bitacle

Disallow:/

User-agent: Blackboard

Disallow:/

User-agent: Black Hole

Disallow:/

User-agent: BlackWidow

Disallow:/

User-agent: BLEXBot

Disallow:/

User-agent: Blow

Disallow:/

User-agent: BlowFish

Disallow:/

User-agent: Boardreader

Disallow:/

User-agent: Bolt

Disallow:/

User-agent: BotALot

Disallow:/

User-agent: Brandprotect

Disallow:/

User-agent: Brandwatch

Disallow:/

User-agent: Bubing

Disallow:/

User-agent: Buddy

Disallow:/

User-agent: BuiltBotTough

Disallow:/

User-agent: BuiltWith

Disallow:/

User-agent: Bullseye

Disallow:/

User-agent: BunnySlippers

Disallow:/

User-agent: BuzzSumo

Disallow:/

User-agent: Calculon

Disallow:/

User-agent: CATExplorador

Disallow:/

User-agent: CazoodleBot

Disallow:/

User-agent: CCBot

Disallow:/

User-agent: Cegbfeieh

Disallow:/

User-agent: CheeseBot

Disallow:/

User-agent: CherryPicker

Disallow:/

User-agent: ChinaClaw

Disallow:/

User-agent: Chlooe

Disallow:/

User-agent: Claritybot

Disallow:/

User-agent: Cliqzbot

Disallow:/

User-agent: Cloud mapping

Disallow:/

User-agent: coccocbot-web

Disallow:/

User-agent: Cogentbot

Disallow:/

User-agent: cognitiveseo

Disallow:/

User-agent: Collector

Disallow:/

User-agent: com.plumanalytics

Disallow:/

User-agent: Copier

Disallow:/

User-agent: CopyRightCheck

Disallow:/

User-agent: Copyscape

Disallow:/

User-agent: Cosmos

Disallow:/

User-agent: Craftbot

Disallow:/

User-agent: crawler4j

Disallow:/

User-agent: crawler.feedback

Disallow:/

User-agent: CrazyWebCrawler

Disallow:/

User-agent: Crescent

Disallow:/

User-agent: CSHttp

Disallow:/

User-agent: Curious

Disallow:/

User-agent: Custo

Disallow:/

User-agent: DatabaseDriverMysqli

Disallow:/

User-agent: DataCha0s

Disallow:/

User-agent: DBLBot

Disallow:/

User-agent: demandbase-bot

Disallow:/

User-agent: Demon

Disallow:/

User-agent: Deusu

Disallow:/

User-agent: Devil

Disallow:/

User-agent: Digincore

Disallow:/

User-agent: DigitalPebble

Disallow:/

User-agent: DIIbot

Disallow:/

User-agent: Dirbuster

Disallow:/

User-agent: Disco

Disallow:/

User-agent: Discobot

Disallow:/

User-agent: Discoverybot

Disallow:/

User-agent: DittoSpyder

Disallow:/

User-agent: DnyzBot

Disallow:/

User-agent: DomainAppender

Disallow:/

User-agent: DomainCrawler

Disallow:/

User-agent: DomainSigmaCrawler

Disallow:/

User-agent: DomainStatsBot

Disallow:/

User-agent: Dotbot

Disallow:/

User-agent: Download Wonder

Disallow:/

User-agent: Dragonfly

Disallow:/

User-agent: Drip

Disallow:/

User-agent: DTS Agent

Disallow:/

User-agent: EasyDL

Disallow:/

User-agent: Ebingbong

Disallow:/

User-agent: eCatch

Disallow:/

User-agent: ECCP/1.0

Disallow:/

User-agent: Ecxi

Disallow:/

User-agent: EirGrabber

Disallow:/

User-agent: EMail Siphon

Disallow:/

User-agent: EMail Wolf

Disallow:/

User-agent: EroCrawler

Disallow:/

User-agent: evc-batch

Disallow:/

User-agent: Evil

Disallow:/

User-agent: Exabot

Disallow:/

User-agent: Express WebPictures

Disallow:/

User-agent: ExtLinksBot

Disallow:/

User-agent: Extractor

Disallow:/

User-agent: ExtractorPro

Disallow:/

User-agent: Extreme Picture Finder

Disallow:/

User-agent: EyeNetIE

Disallow:/

User-agent: Ezooms

Disallow:/

User-agent: FDM

Disallow:/

User-agent: FemtosearchBot

Disallow:/

User-agent: FHscan

Disallow:/

User-agent: Fimap

Disallow:/

User-agent: Firefox/7.0

Disallow:/

User-agent: FlashGet

Disallow:/

User-agent: Flunky

Disallow:/

User-agent: Foobot

Disallow:/

User-agent: fq

Disallow:/

User-agent: Freeuploader

Disallow:/

User-agent: FrontPage

Disallow:/

User-agent: Fyrebot

Disallow:/

User-agent: GalaxyBot

Disallow:/

User-agent: Genieo

Disallow:/

User-agent: GermCrawler

Disallow:/

User-agent: Getintent

Disallow:/

User-agent: GetRight

Disallow:/

User-agent: GetWeb

Disallow:/

User-agent: Gigablast

Disallow:/

User-agent: Gigabot

Disallow:/

User-agent: G-i-g-a-b-o-t

Disallow:/

User-agent: Go-Ahead-Got-It

Disallow:/

User-agent: Gotit

Disallow:/

User-agent: GoZilla

Disallow:/

User-agent: Go!Zilla

Disallow:/

User-agent: Grabber

Disallow:/

User-agent: GrabNet

Disallow:/

User-agent: Grafula

Disallow:/

User-agent: GrapeFX

Disallow:/

User-agent: GrapeshotCrawler

Disallow:/

User-agent: GridBot

Disallow:/

User-agent: GT::WWW

Disallow:/

User-agent: Haansoft

Disallow:/

User-agent: HaosouSpider

Disallow:/

User-agent: Harvest

Disallow:/

User-agent: Havij

Disallow:/

User-agent: HEADMasterSEO

Disallow:/

User-agent: Heritrix

Disallow:/

User-agent: Hloader

Disallow:/

User-agent: HMView

Disallow:/

User-agent: HTMLparser

Disallow:/

User-agent: HTTP::Lite

Disallow:/

User-agent: HTTrack

Disallow:/

User-agent: Humanlinks

Disallow:/

User-agent: HybridBot

Disallow:/

User-agent: Iblog

Disallow:/

User-agent: IDBot

Disallow:/

User-agent: Id-search

Disallow:/

User-agent: IlseBot

Disallow:/

User-agent: Image Fetch

Disallow:/

User-agent: Image Sucker

Disallow:/

User-agent: IndeedBot

Disallow:/

User-agent: Indy Library

Disallow:/

User-agent: InfoNaviRobot

Disallow:/

User-agent: InfoTekies

Disallow:/

User-agent: instabid

Disallow:/

User-agent: Intelliseek

Disallow:/

User-agent: InterGET

Disallow:/

User-agent: Internet Ninja

Disallow:/

User-agent: InternetSeer

Disallow:/

User-agent: internetVista monitor

Disallow:/

User-agent: ips-agent

Disallow:/

User-agent: Iria

Disallow:/

User-agent: IRLbot

Disallow:/

User-agent: Iskanie

Disallow:/

User-agent: IstellaBot

Disallow:/

User-agent: JamesBOT

Disallow:/

User-agent: Jbrofuzz

Disallow:/

User-agent: JennyBot

Disallow:/

User-agent: JetCar

Disallow:/

User-agent: JikeSpider

Disallow:/

User-agent: JOC Web Spider

Disallow:/

User-agent: Joomla

Disallow:/

User-agent: Jorgee

Disallow:/

User-agent: JustView

Disallow:/

User-agent: Jyxobot

Disallow:/

User-agent: Kenjin Spider

Disallow:/

User-agent: Keyword Density

Disallow:/

User-agent: Kozmosbot

Disallow:/

User-agent: Lanshanbot

Disallow:/

User-agent: Larbin

Disallow:/

User-agent: LeechFTP

Disallow:/

User-agent: LeechGet

Disallow:/

User-agent: LexiBot

Disallow:/

User-agent: Lftp

Disallow:/

User-agent: LibWeb

Disallow:/

User-agent: Libwhisker

Disallow:/

User-agent: Lightspeedsystems

Disallow:/

User-agent: Likse

Disallow:/

User-agent: Linkdexbot

Disallow:/

User-agent: LinkextractorPro

Disallow:/

User-agent: LinkpadBot

Disallow:/

User-agent: LinkScan

Disallow:/

User-agent: LinksManager

Disallow:/

User-agent: LinkWalker

Disallow:/

User-agent: LinqiaMetadataDownloaderBot

Disallow:/

User-agent: LinqiaRSSBot

Disallow:/

User-agent: LinqiaScrapeBot

Disallow:/

User-agent: Lipperhey

Disallow:/

User-agent: Litemage_walker

Disallow:/

User-agent: Lmspider

Disallow:/

User-agent: LNSpiderguy

Disallow:/

User-agent: Ltx71

Disallow:/

User-agent: lwp-request

Disallow:/

User-agent: LWP::Simple

Disallow:/

User-agent: lwp-trivial

Disallow:/

User-agent: Magnet

Disallow:/

User-agent: Mag-Net

Disallow:/

User-agent: magpie-crawler

Disallow:/

User-agent: Mail.RU_Bot

Disallow:/

User-agent: Majestic12

Disallow:/

User-agent: MarkMonitor

Disallow:/

User-agent: MarkWatch

Disallow:/

User-agent: Masscan

Disallow:/

User-agent: Mass Downloader

Disallow:/

User-agent: Mata Hari

Disallow:/

User-agent: MauiBot

Disallow:/

User-agent: Meanpathbot

Disallow:/

User-agent: mediawords

Disallow:/

User-agent: MegaIndex.ru

Disallow:/

User-agent: Metauri

Disallow:/

User-agent: MFC_Tear_Sample

Disallow:/

User-agent: Microsoft Data Access

Disallow:/

User-agent: Microsoft URL Control

Disallow:/

User-agent: MIDown tool

Disallow:/

User-agent: MIIxpc

Disallow:/

User-agent: Mister PiX

Disallow:/

User-agent: MJ12bot

Disallow:/

User-agent: Mojeek

Disallow:/

User-agent: Morfeus Fucking Scanner

Disallow:/

User-agent: MSFrontPage

Disallow:/

User-agent: MSIECrawler

Disallow:/

User-agent: Msrabot

Disallow:/

User-agent: MS Web Services Client Protocol

Disallow:/

User-agent: muhstik-scan

Disallow:/

User-agent: Musobot

Disallow:/

User-agent: Name Intelligence

Disallow:/

User-agent: Nameprotect

Disallow:/

User-agent: Navroad

Disallow:/

User-agent: NearSite

Disallow:/

User-agent: Needle

Disallow:/

User-agent: Nessus

Disallow:/

User-agent: NetAnts

Disallow:/

User-agent: Netcraft

Disallow:/

User-agent: netEstate NE Crawler

Disallow:/

User-agent: NetLyzer

Disallow:/

User-agent: NetMechanic

Disallow:/

User-agent: NetSpider

Disallow:/

User-agent: Nettrack

Disallow:/

User-agent: Net Vampire

Disallow:/
sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

B
TLS Certificate Expiry & Recommendations
89 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

89
days left
0d 30d 60d 90d+

Recommended actions

  • Add includeSubDomains to the HSTS directive
  • 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+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://www.who.int

https://www.who.int

426 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://www.who.int200426 msHTTP/1.1cloudflare
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: www)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.who.int/
301https://who.int/

Preferred variant: www

HTTP → HTTPS

301http://www.who.int/ https://www.who.int/

Consistent

A+
Domain Intelligence
who.int — 28 years, 2 months old, hosted on Cloudflare
PASS
who.int — 28 years, 2 months old, hosted on Cloudflare
Info::
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.
Info::
Hosting: Cloudflare
Got: AS209242
Domain expiry

Unknown

SSL certificate

89 days

Issued by Google Trust Services

Domain age

28 years, 2 months

Registered June 5, 1998

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Cloudflare

ASN AS209242

192.133.11.1

Registrar

Registrar unknown

Lock status unknown 5 NS records
Expiry timeline
Today
+1 year
SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable DNSSEC to protect visitors from DNS spoofing
Registrar
Created June 5, 1998 (28 years, 2 months ago)
Last Updated December 10, 2020
Name Servers whqdns1.who.int, whqdns2.who.int, whqdns3.who.int, ext-dns-2.cern.ch, ns1.wpro.who.int
DNSSEC Not enabled
Registrant World Health Organization (WHO)
Hosting
IP Address 192.133.11.1
ASN AS209242 (CLOUDFLARESPECTRUM Cloudflare, Inc., US)
Provider Cloudflare
Data source: rdap (0.3s)

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

A+
HTTP Probe Timing
Total 260 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
194 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
4 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
10 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
256 ms
Total Time Total request time from DNS lookup through full response.
260 ms

Connection waterfall

DNS Lookup 194 ms TCP Connect 4 ms TLS Handshake 10 ms Server Processing 48 ms Content Transfer 5 ms
A+
CDN & Delivery
Cloudflare (HIT)
PASS
Cloudflare (HIT)
Info::
Site is served via Cloudflare CDN (edge: SJC)
Got: cf-ray: 9e71f97c1d7fc65e-SJC
Info::
CDN cache status: HIT
CDN Detected: Cloudflare
Provider Cloudflare Cache Status HIT Evidence cf-ray: 9e71f97c1d7fc65e-SJC
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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