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Total

DNS

Email

Security

Network

100

Availability

Domainbaidu.com

IPv44

IPv60

MX records2

StatusActive

Domain technical report

百度一下，你就知道

baidu.com

全球领先的中文搜索引擎、致力于让网民更便捷地获取信息，找到所求。百度超过千亿的中文网页数据库，可以瞬间找到相关的搜索结果。

Generated: 2026-08-08T17:06:36-05:00 · Cached result

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IPv44

IPv60

MX2

NS5

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

4 IPv4 address(es) detected.

IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

5 NS record(s); 2 or more required.

✓

SOA record10 / 10 pts · Dns

Authoritative zone record.

DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓

DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

2 MX record(s).

✓

SPF25 / 25 pts · Mail

SPF policy published.

✓

DMARC25 / 25 pts · Mail

DMARC policy published.

✓

DKIM20 / 20 pts · Mail

A DKIM selector was verified.

MTA-STS0 / 5 pts · Mail

Mail transport policy.

TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

168 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers0 / 35 pts · Security

0 of 9 evaluated headers detected.

PTR reverse DNS0 / 30 pts · Network

PTR not detected.

✓

IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓

DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓

HTTP response40 / 40 pts · Availability

HTTP/1.1 200 OK

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

4 record(s)

124.237.177.164
111.63.65.247
111.63.65.103
110.242.74.102

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

2 record(s)

20 mx.baidu.com.
10 mx.maillb.baidu.com.

TXT

4 record(s)

"google-site-verification=GHb98-6msqyx_qqjGl5eRatD3QTHyVB6-xQ3gJB5UwM"
"_globalsign-domain-verification=qjb28W2jJSrWj04NHpB0CvgK9tle5JkOq-EcyWBgnE"
"v=spf1 include:spf1.baidu.com include:spf2.baidu.com include:spf3.baidu.com include:spf4.baidu.com -all"
"9279nznttl321bxp1j464rd9vpps246v"

NS

5 record(s)

ns4.baidu.com.
ns3.baidu.com.
ns2.baidu.com.
ns7.baidu.com.
dns.baidu.com.

SOA

1 record(s)

dns.baidu.com. sa.baidu.com. 2012151321 300 300 2592000 600

SPF

Configured

v=spf1 include:spf1.baidu.com include:spf2.baidu.com include:spf3.baidu.com include:spf4.baidu.com -all

DMARC

Configured

v=DMARC1; p=quarantine; rua=mailto:baidu-spammail@baidu.com; ruf=mailto:baidu-spammail@baidu.com

DKIM

Selector k2

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA0b90ObWaLDc+i9MtTNmGeWO009hr20fIxhGg6XBT2kjZ1DTThopSe1nAndsupmcBwlQ5Q6LJ+ZAxLcujnPIxM0ZBLmgpkv8u6RfY4eFP8OLvdAW3oSuB0DyLDigQX4Sj8wBO4YIdQH6AAmBeOsidsKAFNFUCpc3vCxtBDR12U+cBg724l3sBkMQ8evnz6idnqxq9QAVYh8k4kJ+RP+6cqTdy7LjIm8xY/bQNpQIpGUAuDo2DjLcCDun9DAI4Q/3z+Q0o9QuQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

百度一下，你就知道

Description

全球领先的中文搜索引擎、致力于让网民更便捷地获取信息，找到所求。百度超过千亿的中文网页数据库，可以瞬间找到相关的搜索结果。

Final URL

https://www.baidu.com/

HTTP status

200

HTTP

Status

HTTP/1.1 200 OK

Final URL

https://www.baidu.com/

Version

Server

bfe

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

GlobalSign nv-sa

baidu.com

Valid from

2026-07-08T21:32:55-05:00

Valid until

2027-01-23T20:32:55-06:00

Days remaining

168

Protocol

TLSv1.2

Cipher

ECDHE-RSA-AES128-GCM-SHA256

Security headers

0 active

—

HSTSNot detected

—

Content Security PolicyNot detected

—

X-Content-Type-OptionsNot detected

—

X-Frame-OptionsNot detected

—

Referrer PolicyNot detected

—

Permissions PolicyNot detected

—

Cross-Origin-Opener-PolicyNot detected

—

Cross-Origin-Embedder-PolicyNot detected

—

Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent

✓

Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

110.242.74.102, 111.63.65.103, 111.63.65.247, 124.237.177.164

51,89 ms

Cloudflare

1.1.1.1

110.242.74.102, 111.63.65.103, 111.63.65.247, 124.237.177.164

38,01 ms

Quad9

9.9.9.9

110.242.74.102, 111.63.65.103, 111.63.65.247, 124.237.177.164

26,50 ms

OpenDNS

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

mx.baidu.com

Port 25: Closed/unreachable - 37.8 ms - 
Port 465: Closed/unreachable - 4056 ms - 
Port 587: Closed/unreachable - 4047.3 ms -

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