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https://uol.com.br

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
90
GRADE
A
FIX
1
REVIEW
4
PASS
4
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
4 PASS 4 REVIEW 1 FIX
D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
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.

B
Redirect Chain
1 redirect(s), 1020 ms total
REVIEW
1 redirect(s), 1020 ms total
Info::
Single redirect
Got: https://uol.com.br → https://www.uol.com.br/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1020 ms total
Got: 1020 ms

https://uol.com.br

922 ms · HTTP/1.0

301

https://www.uol.com.br/

97 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://uol.com.br301922 msHTTP/1.0BigIP
2https://www.uol.com.br/20097 msHTTP/1.1marrakesh 1.25.0

See the visual redirect chain in the HTTP Probe tab →

B
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
www/non-www, trailing slash, HTTP→HTTPS
Critical::
Both www and non-www versions serve content
Got: Both variants return 200 Expected: One variant 301-redirects to the other
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.uol.com.br/
200https://uol.com.br/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://uol.com.br/ → https://www.uol.com.br/

Consistent

B
HTTP Probe Timing
Total 953 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
REVIEW
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
28 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
230 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
464 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
954 ms
Total Time Total request time from DNS lookup through full response.
954 ms

Connection waterfall

DNS Lookup 28 ms TCP Connect 230 ms TLS Handshake 464 ms Server Processing 231 ms Content Transfer 0 ms
B
TLS Certificate Expiry & Recommendations
328 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

328
days left
0d 30d 60d 90d+

Recommended actions

  • Prefer TLS 1.3 — TLS 1.2 is acceptable but TLS 1.3 removes RSA key exchange and improves latency
  • 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, 188 ms lookup
PASS
1 A records, 188 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 200.147.35.149
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
Has 1 IPv6 (AAAA) record(s)
Got: 2804:49c:3102:401:ffff:ffff:ffff:36
Info::
3 nameserver(s) configured
Got: borges.uol.com.br, charles.uol.com.br, eliot.uol.com.br
Info::
1 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Info::
DNS resolution time: 188 ms
Got: 188 ms
A200.147.35.149
AAAA2804:49c:3102:401:ffff:ffff:ffff:36
CNAME—
NSborges.uol.com.br, charles.uol.com.br, eliot.uol.com.br
MX
10 mx.uol.com.br
TXT
_83pxpdpwjalno6229vnvuiphgnwl0t8
_k1t6hq44koqbgzu2b1og3c96qpgx4js
_a3xwwbow0izh24kero6i0yf7s1dd0wu
_akamai-host-challenge.dex.eks.stg.robinson.service.uol.com.br
_icf9558lsj647ovf9awfysrn20b04ae
ga6XpdhCRgwFYAxnac1hCt-ZE89FRXAQOt0d0nYuUl9HbucC7pT_626yWrg
_ebkblills9lpqjke2uqju04l9xwdw8d
SPF v=spf1 include:spf.uol.com.br include:spfexcl.uol.com.br include:relays.uol.com....
DZC=qvK68EJ
v2xbmyjp43k50d3539mlpp0h8c9ff03t
_8esp8bv05hm317pw8anflp8qihsth30
ct2ns2rvjpch04sh4k9f9l301mrm4sxn
_akamai-host-challenge.dex.eks.stg.robinson.service.uol.com.br.TXTga6XpdhCRgwFYA...
_d8uyauhlmikic4bbglmqux1fg7fe6pt
CAALookup not available with standard resolver
Resolved in 188 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 (227 ms)
PASS
IPv6 reachable (227 ms)
Info::
IPv6 is configured and reachable at 2804:49c:3102:401:ffff:ffff:ffff:36
Got: 227 ms connect
IPv6 Ready
AAAA Records 2804:49c:3102:401:ffff:ffff:ffff:36 Connection Reachable (227 ms)
A+
Crawlability
robots.txt present, sitemap with 14 URLs
PASS
robots.txt present, sitemap with 14 URLs
Info::
robots.txt is present
Got: 2576 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 14 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 2576 B Sitemaps referenced 9 User-agents SemrushBot-OCOB, Twitterbot, DeepSeek, GoogleAgent-Mariner, Meta-ExternalFetcher, PerplexityBot, Timpibot, Webzio-Extended, ChatGPT-User, AI2Bot, Applebot, Applebot-Extended, AwarioRssBot, cohere-training-data-crawler, GPTBot, Claude-Web, ICC-Crawler, MistralAI-User, Cohere-ai, Diffbot, Factset_spyderbot, Peer39_crawler/1.0, Qwen, Google-Extended, OAI-SearchBot, ClaudeBot, DataForSeoBot, FacebookBot, ImagesiftBot, Kangaroo Bot, netEstate Imprint Crawler, Amazonbot, Claude-SearchBot, Claude-User, Datenbank Crawler, DuckAssistBot, Gemini-Deep-Research, NovaAct, Perplexity-User, AwarioSmartBot, CCBot, Cotoyogi, Meta-ExternalAgent, Omgilibot, PanguBot, PetalBot, YouBot, *, Anthropic-ai, Bytespider, Devin, omgili, Operator Blocking No — crawling allowed
# robots.txt
#
User-agent: *
Sitemap: https://www.uol.com.br/carros/sitemap/v2/news-01.xml
Sitemap: https://www.uol.com.br/ecoa/sitemap/news-01.xml
Sitemap: https://www.uol.com.br/esporte/sitemap/v2/news-01.xml
Sitemap: https://www.uol.com.br/nossa/sitemap/news-01.xml
Sitemap: https://www.uol.com.br/splash/sitemap/news-01.xml
Sitemap: https://www.uol.com.br/tilt/sitemap/news-01.xml
Sitemap: https://www.uol.com.br/universa/sitemap/v2/news-01.xml
Sitemap: https://www.uol.com.br/vivabem/sitemap/v2/news-01.xml
Sitemap: https://c.jsuol.com.br/assets/jupiter-news/?resource-id=sitemap&source=toca/index.xml
Allow: /
Disallow: /carros/dev/
User-agent: GPTBot
Disallow: /
User-agent: Google-Extended
Disallow: /
Allow: /.ghtm$
User-agent: OAI-SearchBot
Disallow: /
User-agent: ChatGPT-User
Disallow: /
User-agent: AI2Bot
Disallow: /
User-agent: Amazonbot
Disallow: /
User-agent: Anthropic-ai
Disallow: /
User-agent: Applebot
Disallow: /
User-agent: Applebot-Extended
Disallow: /
User-agent: AwarioRssBot
Disallow: /
User-agent: AwarioSmartBot
Disallow: /
User-agent: Bytespider
Disallow: /
User-agent: CCBot
Disallow: /
User-agent: Claude-SearchBot
Disallow: /
User-agent: Claude-User
Disallow: /
User-agent: Claude-Web
Disallow: /
User-agent: ClaudeBot
Disallow: /
User-agent: Cohere-ai
Disallow: /
User-agent: cohere-training-data-crawler
Disallow: /
User-agent: Cotoyogi
Disallow: /
User-agent: DataForSeoBot
Disallow: /
User-agent: Datenbank Crawler
Disallow: /
User-agent: DeepSeek
Disallow: /
User-agent: Devin
Disallow: /
User-agent: Diffbot
Disallow: /
User-agent: DuckAssistBot
Disallow: /
User-agent: FacebookBot
Disallow: /
User-agent: Factset_spyderbot
Disallow: /
User-agent: Gemini-Deep-Research
Disallow: /
User-agent: GoogleAgent-Mariner
Disallow: /
User-agent: ICC-Crawler
Disallow: /
User-agent: ImagesiftBot
Disallow: /
User-agent: Kangaroo Bot
Disallow: /
User-agent: Meta-ExternalAgent
Disallow: /
User-agent: Meta-ExternalFetcher
Disallow: /
User-agent: MistralAI-User
Disallow: /
User-agent: netEstate Imprint Crawler
Disallow: /
User-agent: NovaAct
Disallow: /
User-agent: omgili
Disallow: /
User-agent: Omgilibot
Disallow: /
User-agent: Operator
Disallow: /
User-agent: PanguBot
Disallow: /
User-agent: Peer39_crawler/1.0
Disallow: /
User-agent: Perplexity-User
Disallow: /
User-agent: PerplexityBot
Disallow: /
User-agent: PetalBot
Disallow: /
User-agent: Qwen
Disallow: /
User-agent: SemrushBot-OCOB
Disallow: /
User-agent: Timpibot
Disallow: /
User-agent: Twitterbot
Disallow: /
User-agent: Webzio-Extended
Disallow: /
User-agent: YouBot
Disallow: /
sitemap.xml 200 OK
Type URL Set URLs 14 entries Valid XML Yes
Sample URLs:
A+
Domain Intelligence
uol.com.br — 30 years, 4 months old
PASS
uol.com.br — 30 years, 4 months old
Info::
Domain registered until Apr 24, 2034 (8 years, 1 months remaining)
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.
Warning::
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

2843 days

April 24, 2034

SSL certificate

328 days

Issued by DigiCert Inc

Domain age

30 years, 4 months

Registered April 24, 1996

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2804:49c:3102:401:ffff:ffff:ffff:36

Registrar

Registrar unknown

Unlocked 3 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
Created April 24, 1996 (30 years, 4 months ago)
Expires April 24, 2034 (8 years, 1 months)
Last Updated August 27, 2024
Name Servers eliot.uol.com.br, borges.uol.com.br, charles.uol.com.br
DNSSEC Not enabled
Registrant Universo Online S.A.
Hosting
IP Address 2804:49c:3102:401:ffff:ffff:ffff:36
Data source: rdap (0.7s)

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

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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