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 Santa Clara, United States

200 OK

Checks

6 PASS 2 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.

IPv6 Readiness

Action

No IPv6 support

REVIEW

No IPv6 support

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

TLS Certificate Expiry & Recommendations

45 days until leaf cert expires — 3 issues to address

REVIEW

Certificate validity

days left

0d 30d 60d 90d+

Recommended actions

Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
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, 93 ms lookup

PASS

1 A records, 93 ms lookup

Resolves to 1 IPv4 address(es)

Got: 91.99.80.139

Single A record — no DNS redundancy

Multiple A records provide failover if one server goes down.

No IPv6 (AAAA) records

2 nameserver(s) configured

Got: ns1.hover.com, ns2.hover.com

1 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: 93 ms

Got: 93 ms

A	91.99.80.139
AAAA	—
CNAME	—
NS	ns1.hover.com, ns2.hover.com
MX	10 mail.tcpdf.com
TXT	SPF v=spf1 ip4:91.99.80.139 a mx a:tecnick.com include:gmail.com ~all
CAA	Lookup not available with standard resolver

Resolved in 93 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+

Redirect Chain

No redirects — direct access

PASS

No redirects — direct access

Got: https://tcpdf.org

https://tcpdf.org

517 ms · HTTP/1.1 FINAL

#	URL	Status	Time	Protocol	Server
1	https://tcpdf.org	200	517 ms	HTTP/1.1	nginx

A+

Crawlability

robots.txt present, sitemap with 695 URLs

PASS

robots.txt present, sitemap with 695 URLs

robots.txt is present

Got: 10240 bytes

sitemap.xml is present

sitemap.xml is valid XML

sitemap.xml contains 695 entries

robots.txt does not reference a sitemap

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 SEOlyticsCrawler, ADmantX, Go-Ahead-Got-It, Id-search, Barkrowler, CCBot, Magnet, SearchmetricsBot, Aboundex, LWP::Simple, Pockey, ScrepyBot, Seomoz, Alligator, BackDoorBot, Crescent, FlashGet, ProWebWalker, Aspiegel, DomCopBot, Go!Zilla, BuiltWith, FyberSpider, ALittle Client, Discoverybot, Litemage_walker, Page Analyzer, Proximic, Recorder, Buck, Heritrix, JustView, SEOstats, SemrushBot-OCOB, Apexoo, IstellaBot, Joomla, NextGenSearchBot, SiteSucker, BuzzSumo, DBLBot, HMView, Lmspider, Papa Foto, DomainCrawler, HybridBot, Lipperhey Spider, Rogerbot, Seekport, Devil, DomainSigmaCrawler, EMail Siphon, AhrefsBot, SBIder, Haansoft, MSFrontPage, NetMechanic, Pi-Monster, RocketCrawler, CensysInspect, DataCha0s, Morfeus Fucking Scanner, Nmap, OpenVAS, Pavuk, BackWeb, LexiBot, Scrapy, SemrushBot-SI, SiteAuditBot, Custo, EyeNetIE, Grabber, PageThing.com, SalesIntelligent, LinqiaScrapeBot, Snake, DatabaseDriverMysqli, Mata Hari, CATExplorador, Iskanie, Keyword Density, LieBaoFast, Metauri, RebelMouse, JikeSpider, Piepmatz, PyCurl, IlseBot, Masscan, NearSite, Blackboard, Cocolyzebot, Dispatch, Genieo, Searchestate, ChinaClaw, Domains Project, Kozmosbot, NetLyzer, Siteimprove, Niki-bot, Cegbfeieh, Copyscape, Screaming, DomainAppender, FemtosearchBot, Majestic12, Name Intelligence, Navroad, OpenLinkProfiler, Picscout, ClaudeBot, Net Vampire, DomainStatsBot, SiteLockSpider, 404enemy, Exabot, HEADMasterSEO, Mb2345Browser, Nimbostratus, SEOkicks-Robot, Gigabot, Bitacle, DnBCrawler-Analytics, Extreme Picture Finder, GalaxyBot, InternetMeasurement, LinkextractorPro, NetZIP, Site Sucker, AiHitBot, SiteExplorer, Snapbot, EroCrawler, Iria, POE-Component-Client-HTTP, Humanlinks, GPTBot, Microsoft Data Access, ScanAlert, SemanticJuice, ECCP/1.0, HTTP::Lite, Image Sucker, InfoNaviRobot, ScreenerBot, FHscan, Mediatoolkitbot, Ninja, SemrushBot-FT, DTS Agent, Dragonfly, BetaBot, GridBot, Harvest, MegaIndex.ru, Pixray, RankingBot2, Buddy, GT::WWW, GetWeb, LinqiaRSSBot, Citoid, Craftbot, Larbin, SISTRIX, Anarchie, Bolt, Jetty, Msrabot, Cogentbot, Fyrebot, MJ12bot, OutfoxBot, 80legs, CSHttp, CherryPicker, DIIbot, PECL::HTTP, Pandalytics, BuiltBotTough, JamesBOT, Kenjin Spider, RSSingBot, Discobot, JetCar, Acunetix, SentiBot, PageScorer, Download Wonder, Gotit, RankActive, Alexibot, Anarchy99, InterGET, Nameprotect, GetRight, LinkScan, MIIxpc, FrontPage, GoZilla, PageGrabber, Rainbot, G-i-g-a-b-o-t, Jbrofuzz, Mag-Net, OutclicksBot, BBBike, SeobilityBot, DSearch, Extractor, Majestic SEO, Scanbot, BacklinkCrawler, Likse, Ripper, SemrushBot, ImagesiftBot, PageAnalyzer, Psbot, Dirbuster, Information Security Team InfraSec Scanner, Lipperhey, 360Spider, HTMLparser, ProPowerBot, RankurBot, SenutoBot, Sitebeam, Bandit, Evil, Ezooms, SeekportBot, JennyBot, AdsTxtCrawlerTP, Boardreader, Brandwatch, Panscient, Pump, SEOlyt, Sitevigil, Black Hole, LinkWalker, SEOkicks, Battleztar Bazinga, Copier, Digincore, Lanshanbot, Leap, MarkWatch, MIDown tool, Mass Downloader, Freeuploader, Octopus, PictureFinder, SEOprofiler, PxBroker, Ankit, Cosmos, Hloader, InternetSeer, Majestic-SEO, Moblie Safari, Bigfoot, 01h4x.com, 404checker, Firefox/7.0, Nuclei, Picsearch, Semrush, AwarioSmartBot, Drip, Lftp, RankingBot, BunnySlippers, DigitalPebble, GrabNet, MTRobot, Mozlila, Probethenet, Snoopy, Aboundexbot, Bullseye, HTTrack, Meanpathbot, MolokaiBot, SemrushBot-SWA, EMail Wolf, GermCrawler, Nessus, CODE87, Grafula, InfraSec Scanner, MicroMessenger, Openvas, SemrushBot-BA, Kinza, NetAnts, AlphaBot, CopyRightCheck, Attach, Demon, Image Fetch, JOC Web Spider, Offline Explorer, Badass, Collector, Indy Library, LinkpadBot, MeanPath Bot, BlackWidow, Dotbot, IDBot, Mojeek, NimbleCrawler, Rankivabot, NPbot, SiteSnagger, Chlooe, Express WebPictures, Keybot Translation-Search-Machine, Mr.4x3, PHPCrawl, DnyzBot, Flunky, Offline Navigator, RankFlex, Re-re, Havij, Blow, Calculon, Foobot, InfoTekies, Quick-Crawler, Netcraft, BatchFTP, BLEXBot, Cloud mapping, Crawling at Home Project, Deusu, Needle, RealDownload, BDCbot, SmartDownload, ASPSeek, Backlink-Ceck, Fuzz, LeechFTP, Openfind, Mail.RU_Bot, BlowFish, RankActiveLinkBot, Ecxi, MSIECrawler, HaosouSpider, LibWeb, BacklinksExtendedBot, IRLbot, LeechGet, PeoplePal, ReGet, BDFetch, Siphon, ChatGPT-User, MQQBrowser, OrangeBot, Shodan, SiteCheckerBotCrawler, Brandprotect, Abonti, Lightspeedsystems, LinksManager, Anthill, CrunchBot, MarkMonitor, CheeseBot, Mojolicious, SeoCherryBot, AfD-Verbotsverfahren, Claritybot, Jyxobot, LinqiaMetadataDownloaderBot, NetSpider, SMTBot, Getintent, CheTeam, Curious, Ltx71, SeoSiteCheckup, Disco, FacebookBot, IDBTE4M, Intelliseek, RepoMonkey, Anarchy, AwarioBot, Pu_iN, ScoutJet, ExtLinksBot, Jorgee, Bytespider, DittoSpyder, EasyDL, Linkbot, Aipbot, Asterias, Cliqzbot, Nutch, LNSpiderguy, OnCrawl, Atomseobot, CyotekWebCopy, ExtractorPro, GrapeshotCrawler, Musobot, OrangeSpider, NICErsPRO, Nettrack, CrazyWebCrawler, Internet Ninja, BotALot, EirGrabber, HonoluluBot, Netvibes, Nibbler, Petalbot, Reaper, RedesScrapy, AIBOT, AwarioRssBot, Fimap, MFC_Tear_Sample, Microsoft URL Control, Pimonster, QueryN Metasearch, BackStreet, Iblog, Minefield, Nikto, CazoodleBot, FDM, Libwhisker, MauiBot, Mister PiX, SlySearch, AllSubmitter, Ebingbong, IndeedBot, GrapeFX, PleaseCrawl Blocking No — crawling allowed

User-agent: 01h4x.com
User-agent: 360Spider
User-agent: 404checker
User-agent: 404enemy
User-agent: 80legs
User-agent: ADmantX
User-agent: AIBOT
User-agent: ALittle Client
User-agent: ASPSeek
User-agent: Abonti
User-agent: Aboundex
User-agent: Aboundexbot
User-agent: Acunetix
User-agent: AdsTxtCrawlerTP
User-agent: AfD-Verbotsverfahren
User-agent: AhrefsBot
User-agent: AiHitBot
User-agent: Aipbot
User-agent: Alexibot
User-agent: AllSubmitter
User-agent: Alligator
User-agent: AlphaBot
User-agent: Anarchie
User-agent: Anarchy
User-agent: Anarchy99
User-agent: Ankit
User-agent: Anthill
User-agent: Apexoo
User-agent: Aspiegel
User-agent: Asterias
User-agent: Atomseobot
User-agent: Attach
User-agent: AwarioBot
User-agent: AwarioRssBot
User-agent: AwarioSmartBot
User-agent: BBBike
User-agent: BDCbot
User-agent: BDFetch
User-agent: BLEXBot
User-agent: BackDoorBot
User-agent: BackStreet
User-agent: BackWeb
User-agent: Backlink-Ceck
User-agent: BacklinkCrawler
User-agent: BacklinksExtendedBot
User-agent: Badass
User-agent: Bandit
User-agent: Barkrowler
User-agent: BatchFTP
User-agent: Battleztar Bazinga
User-agent: BetaBot
User-agent: Bigfoot
User-agent: Bitacle
User-agent: BlackWidow
User-agent: Black Hole
User-agent: Blackboard
User-agent: Blow
User-agent: BlowFish
User-agent: Boardreader
User-agent: Bolt
User-agent: BotALot
User-agent: Brandprotect
User-agent: Brandwatch
User-agent: Buck
User-agent: Buddy
User-agent: BuiltBotTough
User-agent: BuiltWith
User-agent: Bullseye
User-agent: BunnySlippers
User-agent: BuzzSumo
User-agent: Bytespider
User-agent: CATExplorador
User-agent: CCBot
User-agent: CODE87
User-agent: CSHttp
User-agent: Calculon
User-agent: CazoodleBot
User-agent: Cegbfeieh
User-agent: CensysInspect
User-agent: ChatGPT-User
User-agent: CheTeam
User-agent: CheeseBot
User-agent: CherryPicker
User-agent: ChinaClaw
User-agent: Chlooe
User-agent: Citoid
User-agent: Claritybot
User-agent: ClaudeBot
User-agent: Cliqzbot
User-agent: Cloud mapping
User-agent: Cocolyzebot
User-agent: Cogentbot
User-agent: Collector
User-agent: Copier
User-agent: CopyRightCheck
User-agent: Copyscape
User-agent: Cosmos
User-agent: Craftbot
User-agent: Crawling at Home Project
User-agent: CrazyWebCrawler
User-agent: Crescent
User-agent: CrunchBot
User-agent: Curious
User-agent: Custo
User-agent: CyotekWebCopy
User-agent: DBLBot
User-agent: DIIbot
User-agent: DSearch
User-agent: DTS Agent
User-agent: DataCha0s
User-agent: DatabaseDriverMysqli
User-agent: Demon
User-agent: Deusu
User-agent: Devil
User-agent: Digincore
User-agent: DigitalPebble
User-agent: Dirbuster
User-agent: Disco
User-agent: Discobot
User-agent: Discoverybot
User-agent: Dispatch
User-agent: DittoSpyder
User-agent: DnBCrawler-Analytics
User-agent: DnyzBot
User-agent: DomCopBot
User-agent: DomainAppender
User-agent: DomainCrawler
User-agent: DomainSigmaCrawler
User-agent: DomainStatsBot
User-agent: Domains Project
User-agent: Dotbot
User-agent: Download Wonder
User-agent: Dragonfly
User-agent: Drip
User-agent: ECCP/1.0
User-agent: EMail Siphon
User-agent: EMail Wolf
User-agent: EasyDL
User-agent: Ebingbong
User-agent: Ecxi
User-agent: EirGrabber
User-agent: EroCrawler
User-agent: Evil
User-agent: Exabot
User-agent: Express WebPictures
User-agent: ExtLinksBot
User-agent: Extractor
User-agent: ExtractorPro
User-agent: Extreme Picture Finder
User-agent: EyeNetIE
User-agent: Ezooms
User-agent: FDM
User-agent: FHscan
User-agent: FacebookBot
User-agent: FemtosearchBot
User-agent: Fimap
User-agent: Firefox/7.0
User-agent: FlashGet
User-agent: Flunky
User-agent: Foobot
User-agent: Freeuploader
User-agent: FrontPage
User-agent: Fuzz
User-agent: FyberSpider
User-agent: Fyrebot
User-agent: G-i-g-a-b-o-t
User-agent: GPTBot
User-agent: GT::WWW
User-agent: GalaxyBot
User-agent: Genieo
User-agent: GermCrawler
User-agent: GetRight
User-agent: GetWeb
User-agent: Getintent
User-agent: Gigabot
User-agent: Go!Zilla
User-agent: Go-Ahead-Got-It
User-agent: GoZilla
User-agent: Gotit
User-agent: GrabNet
User-agent: Grabber
User-agent: Grafula
User-agent: GrapeFX
User-agent: GrapeshotCrawler
User-agent: GridBot
User-agent: HEADMasterSEO
User-agent: HMView
User-agent: HTMLparser
User-agent: HTTP::Lite
User-agent: HTTrack
User-agent: Haansoft
User-agent: HaosouSpider
User-agent: Harvest
User-agent: Havij
User-agent: Heritrix
User-agent: Hloader
User-agent: HonoluluBot
User-agent: Humanlinks
User-agent: HybridBot
User-agent: IDBTE4M
User-agent: IDBot
User-agent: IRLbot
User-agent: Iblog
User-agent: Id-search
User-agent: IlseBot
User-agent: Image Fetch
User-agent: Image Sucker
User-agent: ImagesiftBot
User-agent: IndeedBot
User-agent: Indy Library
User-agent: InfoNaviRobot
User-agent: InfoTekies
User-agent: Information Security Team InfraSec Scanner
User-agent: InfraSec Scanner
User-agent: Intelliseek
User-agent: InterGET
User-agent: InternetMeasurement
User-agent: InternetSeer
User-agent: Internet Ninja
User-agent: Iria
User-agent: Iskanie
User-agent: IstellaBot
User-agent: JOC Web Spider
User-agent: JamesBOT
User-agent: Jbrofuzz
User-agent: JennyBot
User-agent: JetCar
User-agent: Jetty
User-agent: JikeSpider
User-agent: Joomla
User-agent: Jorgee
User-agent: JustView
User-agent: Jyxobot
User-agent: Kenjin Spider
User-agent: Keybot Translation-Search-Machine
User-agent: Keyword Density
User-agent: Kinza
User-agent: Kozmosbot
User-agent: LNSpiderguy
User-agent: LWP::Simple
User-agent: Lanshanbot
User-agent: Larbin
User-agent: Leap
User-agent: LeechFTP
User-agent: LeechGet
User-agent: LexiBot
User-agent: Lftp
User-agent: LibWeb
User-agent: Libwhisker
User-agent: LieBaoFast
User-agent: Lightspeedsystems
User-agent: Likse
User-agent: LinkScan
User-agent: LinkWalker
User-agent: Linkbot
User-agent: LinkextractorPro
User-agent: LinkpadBot
User-agent: LinksManager
User-agent: LinqiaMetadataDownloaderBot
User-agent: LinqiaRSSBot
User-agent: LinqiaScrapeBot
User-agent: Lipperhey
User-agent: Lipperhey Spider
User-agent: Litemage_walker
User-agent: Lmspider
User-agent: Ltx71
User-agent: MFC_Tear_Sample
User-agent: MIDown tool
User-agent: MIIxpc
User-agent: MJ12bot
User-agent: MQQBrowser
User-agent: MSFrontPage
User-agent: MSIECrawler
User-agent: MTRobot
User-agent: Mag-Net
User-agent: Magnet
User-agent: Mail.RU_Bot
User-agent: Majestic-SEO
User-agent: Majestic12
User-agent: Majestic SEO
User-agent: MarkMonitor
User-agent: MarkWatch
User-agent: Mass Downloader
User-agent: Masscan
User-agent: Mata Hari
User-agent: MauiBot
User-agent: Mb2345Browser
User-agent: MeanPath Bot
User-agent: Meanpathbot
User-agent: Mediatoolkitbot
User-agent: MegaIndex.ru
User-agent: Metauri
User-agent: MicroMessenger
User-agent: Microsoft Data Access
User-agent: Microsoft URL Control
User-agent: Minefield
User-agent: Mister PiX
User-agent: Moblie Safari
User-agent: Mojeek
User-agent: Mojolicious
User-agent: MolokaiBot
User-agent: Morfeus Fucking Scanner
User-agent: Mozlila
User-agent: Mr.4x3
User-agent: Msrabot
User-agent: Musobot
User-agent: NICErsPRO
User-agent: NPbot
User-agent: Name Intelligence
User-agent: Nameprotect
User-agent: Navroad
User-agent: NearSite
User-agent: Needle
User-agent: Nessus
User-agent: NetAnts
User-agent: NetLyzer
User-agent: NetMechanic
User-agent: NetSpider
User-agent: NetZIP
User-agent: Net Vampire
User-agent: Netcraft
User-agent: Nettrack
User-agent: Netvibes
User-agent: NextGenSearchBot
User-agent: Nibbler
User-agent: Niki-bot
User-agent: Nikto
User-agent: NimbleCrawler
User-agent: Nimbostratus
User-agent: Ninja
User-agent: Nmap
User-agent: Nuclei
User-agent: Nutch
User-agent: Octopus
User-agent: Offline Explorer
User-agent: Offline Navigator
User-agent: OnCrawl
User-agent: OpenLinkProfiler
User-agent: OpenVAS
User-agent: Openfind
User-agent: Openvas
User-agent: OrangeBot
User-agent: OrangeSpider
User-agent: OutclicksBot
User-agent: OutfoxBot
User-agent: PECL::HTTP
User-agent: PHPCrawl
User-agent: POE-Component-Client-HTTP
User-agent: PageAnalyzer
User-agent: PageGrabber
User-agent: PageScorer
User-agent: PageThing.com
User-agent: Page Analyzer
User-agent: Pandalytics
User-agent: Panscient
User-agent: Papa Foto
User-agent: Pavuk
User-agent: PeoplePal
User-agent: Petalbot
User-agent: Pi-Monster
User-agent: Picscout
User-agent: Picsearch
User-agent: PictureFinder
User-agent: Piepmatz
User-agent: Pimonster
User-agent: Pixray
User-agent: PleaseCrawl
User-agent: Pockey
User-agent: ProPowerBot
User-agent: ProWebWalker
User-agent: Probethenet
User-agent: Proximic
User-agent: Psbot
User-agent: Pu_iN
User-agent: Pump
User-agent: PxBroker
User-agent: PyCurl
User-agent: QueryN Metasearch
User-agent: Quick-Crawler
User-agent: RSSingBot
User-agent: Rainbot
User-agent: RankActive
User-agent: RankActiveLinkBot
User-agent: RankFlex
User-agent: RankingBot
User-agent: RankingBot2
User-agent: Rankivabot
User-agent: RankurBot
User-agent: Re-re
User-agent: ReGet
User-agent: RealDownload
User-agent: Reaper
User-agent: RebelMouse
User-agent: Recorder
User-agent: RedesScrapy
User-agent: RepoMonkey
User-agent: Ripper
User-agent: RocketCrawler
User-agent: Rogerbot
User-agent: SBIder
User-agent: SEOkicks
User-agent: SEOkicks-Robot
User-agent: SEOlyt
User-agent: SEOlyticsCrawler
User-agent: SEOprofiler
User-agent: SEOstats
User-agent: SISTRIX
User-agent: SMTBot
User-agent: SalesIntelligent
User-agent: ScanAlert
User-agent: Scanbot
User-agent: ScoutJet
User-agent: Scrapy
User-agent: Screaming
User-agent: ScreenerBot
User-agent: ScrepyBot
User-agent: Searchestate
User-agent: SearchmetricsBot
User-agent: Seekport
User-agent: SeekportBot
User-agent: SemanticJuice
User-agent: Semrush
User-agent: SemrushBot
User-agent: SemrushBot-BA
User-agent: SemrushBot-FT
User-agent: SemrushBot-OCOB
User-agent: SemrushBot-SI
User-agent: SemrushBot-SWA
User-agent: SentiBot
User-agent: SenutoBot
User-agent: SeoCherryBot
User-agent: SeoSiteCheckup
User-agent: SeobilityBot
User-agent: Seomoz
User-agent: Shodan
User-agent: Siphon
User-agent: SiteAuditBot
User-agent: SiteCheckerBotCrawler
User-agent: SiteExplorer
User-agent: SiteLockSpider
User-agent: SiteSnagger
User-agent: SiteSucker
User-agent: Site Sucker
User-agent: Sitebeam
User-agent: Siteimprove
User-agent: Sitevigil
User-agent: SlySearch
User-agent: SmartDownload
User-agent: Snake
User-agent: Snapbot
User-agent: Snoopy
User-agen

sitemap.xml 200 OK

Type URL Set URLs 695 entries Valid XML Yes

Sample URLs:

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.tcpdf.org/

200https://tcpdf.org/

Preferred variant: non-www

HTTP → HTTPS

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

Consistent

A+

Domain Intelligence

tcpdf.org — via Tucows Domains Inc., 18 years, 4 months old, hosted on Hetzner

PASS

tcpdf.org — via Tucows Domains Inc., 18 years, 4 months old, hosted on Hetzner

Domain registered until Mar 3, 2029 (2 years, 10 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: Tucows Domains 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.

Hosting: Hetzner

Got: AS24940

Domain expiry

992 days

March 3, 2029

SSL certificate

45 days

Issued by Let's Encrypt

Domain age

18 years, 4 months

Registered March 3, 2008

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Hetzner

ASN AS24940

91.99.80.139

Registrar

Tucows Domains Inc.

Unlocked 2 NS records

Expiry timeline

Today

+1 year

Domain expiry SSL expiry Danger zone (≤30 days)

Recommended actions

Enable DNSSEC to protect visitors from DNS spoofing
Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers

Registrar Tucows Domains Inc.

Created March 3, 2008 (18 years, 4 months ago)

Expires March 3, 2029 (2 years, 10 months)

Last Updated April 2, 2020

Name Servers ns1.hover.com, ns2.hover.com

DNSSEC Not enabled

Hosting

IP Address 91.99.80.139

ASN AS24940 (HETZNER-AS, DE)

Provider Hetzner

Data source: rdap (0.2s)

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

HTTP Probe Timing

Total 666 ms — DNS, TCP, TLS, TTFB, content transfer breakdown

PASS

DNS Lookup

33 ms

TCP Connect

158 ms

TLS Handshake

161 ms

Time to First Byte

510 ms

Total Time

667 ms

Connection waterfall

DNS Lookup 33 ms TCP Connect 158 ms TLS Handshake 161 ms Server Processing 158 ms Content Transfer 157 ms

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