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79
Total
80
DNS
90
Email
61
Security
55
Network
100
Availability
Domainbt.cn
IPv41
IPv61
MX records1
StatusActive
Domain technical report

宝塔面板(bt.cn) 简单好用的Linux/Windows服务器运维管理面板

bt.cn

宝塔(bt.cn)，让运维简单高效。面板支持Linux与Windows系统。一键配置：LAMP/LNMP、网站、数据库、FTP、SSL，通过Web端轻松管理服务器。

Generated: 2026-08-09T07:33:11-05:00 · Cached result

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IPv41
IPv61
MX1
NS2

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

1 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

2 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

1 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

8 day(s) remaining.

i
Certificate lifetime2 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers4 / 35 pts · Security

1 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 connectivity35 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓
HTTP response40 / 40 pts · Availability

HTTP/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
157.255.129.251

AAAA

1 record(s)
2001:19f0:7001:54fc:5400:2ff:fe9b:97f9

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 mail.bt.cn.

TXT

3 record(s)
"v=spf1 a mx -all"
"google-site-verification=T_Dp27KV30n1mzB0BwaVHZzAR7CYJ7E6DCNU30fz1CY"
"202006140135465jku4f66s84knkzqfhymyot20dlksu51gbge4j93nmd9rutp4i"

NS

2 record(s)
vip4.alidns.com.
vip3.alidns.com.

SOA

1 record(s)
vip3.alidns.com. hostmaster.hichina.com. 2025121607 3600 1200 86400 600

CAA

0 record(s)
—

Not configured

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

RRSIG

5 record(s)
;; communications error to 69.64.44.20#53: timed out
;; communications error to 69.64.44.50#53: timed out
; <<>> DiG 9.18.39-0ubuntu0.22.04.4-Ubuntu <<>> bt.cn RRSIG +short +time=1 +tries=1
;; global options: +cmd
;; no servers could be reached

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 a mx -all

DMARC

Configured
v=DMARC1;p=quarantine;rua=mailto:admin@bt.cn

DKIM

Selector default
v=DKIM1;k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDKNSyn2iiCZXZo6yIeYsT+gHLUATOvxyWFwql398fxpIJYGZC8DE0aaXWWzB2vzFRyVpEHHDpHhIu2JJPhE/9OIbRqX+9+tza9vgh6zqEi7Q96nbqoVK0RRWo5p2bSxrzTZ4wlZqUgK4plutvQ3mcg2e0lto16KWlDHPtiEhjX6wIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
宝塔面板(bt.cn) 简单好用的Linux/Windows服务器运维管理面板
Description
宝塔(bt.cn)，让运维简单高效。面板支持Linux与Windows系统。一键配置：LAMP/LNMP、网站、数据库、FTP、SSL，通过Web端轻松管理服务器。
Final URL
https://www.bt.cn/new/index.html
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://www.bt.cn/new/index.html
Version
3
Server
openresty
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
sslTrus
CN
*.bt.cn
Valid from
2025-10-19T19:00:00-05:00
Valid until
2026-08-17T18:59:59-05:00
Days remaining
8
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

1 active
✓
HSTSImplemented
—
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
157.255.129.251
59,87 ms
Cloudflare
1.1.1.1
157.255.129.251
66,92 ms
Quad9
9.9.9.9
157.255.129.251
99,04 ms
OpenDNS
208.67.222.222
157.255.129.251
69,64 ms
AdGuard
94.140.14.14
157.255.129.251
290,12 ms

IP, geolocation and ASNAssociated network information

157.255.129.251

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

mail.bt.cn

Port 25: Closed/unreachable - 23.3 ms - 
Port 465: Closed/unreachable - 229.7 ms - 
Port 587: Closed/unreachable - 237.8 ms -

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