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69
Total
70
DNS
65
Email
65
Security
20
Network
100
Availability
Domainyoudao.com
IPv41
IPv60
MX records2
StatusActive
Domain technical report

网易有道

youdao.com

网易有道是中国领先的智能学习公司，致力于提供100%以用户为导向的学习产品和服务。有道成立于2006年，打造了一系列深受用户喜欢的口碑型大众学习工具产品，例如：网易有道词典、有道精品课、有道翻译官、有道云笔记等。2014年，网易有道宣布正式进军互联网教育行业。2018年4月，网易有道完成首次战略融资，投后估值11.2亿美金，跻身独角兽阵营。2019年10月，网易有道成功登陆纽交所，股票代码为“DAO”，成为网易集团首个独立上市的公司。

Generated: 2026-08-09T01:39:12-05:00 · Cached result

JSONCSVPDFVisit site
IPv41
IPv60
MX2
NS3

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

3 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.

!
DMARC0 / 25 pts · Mail

DMARC policy not found.

✓
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

83 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.

i
IPv4 diversity20 / 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

1 record(s)
220.197.31.37

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

2 record(s)
20 hzmx02.mxmail.netease.com.
10 hzmx01.mxmail.netease.com.

TXT

1 record(s)
"v=spf1 include:spf.163.com ip4:61.135.221.0/24 ip4:123.58.182.192/26 ip4:220.181.8.0/24 -all"

NS

3 record(s)
rem2.yodao.net.
rem1.yodao.net.
rem3.yodao.net.

SOA

2 record(s)
;; communications error to 69.64.44.20#53: timed out
rem1.yodao.net. maintain.rd.netease.com. 1786158105 10800 900 86400 600

CAA

0 record(s)
—

Not configured

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

RRSIG

0 record(s)
—

Not configured

NSEC

0 record(s)
—

Not configured

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 include:spf.163.com ip4:61.135.221.0/24 ip4:123.58.182.192/26 ip4:220.181.8.0/24 -all

DMARC

Not configured
—

Not configured

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
网易有道
Description
网易有道是中国领先的智能学习公司，致力于提供100%以用户为导向的学习产品和服务。有道成立于2006年，打造了一系列深受用户喜欢的口碑型大众学习工具产品，例如：网易有道词典、有道精品课、有道翻译官、有道云笔记等。2014年，网易有道宣布正式进军互联网教育行业。2018年4月，网易有道完成首次战略融资，投后估值11.2亿美金，跻身独角兽阵营。2019年10月，网易有道成功登陆纽交所，股票代码为“DAO”，成为网易集团首个独立上市的公司。
Final URL
https://youdao.com/
HTTP status
200

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://youdao.com/
Version
2
Server
YDWS
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
DigiCert, Inc.
CN
*.youdao.com
Valid from
2025-09-29T19:00:00-05:00
Valid until
2026-10-31T18:59:59-05:00
Days remaining
83
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

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
220.197.31.37
41,62 ms
Cloudflare
1.1.1.1
220.197.31.37
115,81 ms
Quad9
9.9.9.9
220.197.31.37
81,39 ms
OpenDNS
208.67.222.222
220.197.31.37
97,45 ms
AdGuard
94.140.14.14
220.197.31.37
66,96 ms

IP, geolocation and ASNAssociated network information

220.197.31.37

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

hzmx02.mxmail.netease.com

Port 25: Closed/unreachable - 1 ms - 
Port 465: Closed/unreachable - 27.3 ms - 
Port 587: Closed/unreachable - 87.6 ms - 220 entmail-hzmx2-aliyun.singapore.163.org ESMTP ready

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