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56
Total
70
DNS
0
Email
65
Security
20
Network
100
Availability
Domainlaserfair.cn
IPv41
IPv60
MX records0
StatusActive
Domain technical report

汉诺威深圳激光展丨深圳激光展丨LASERFAIR-LASERFAIR 2026丨 第十九届深圳国际激光与智能装备、光子技术博览会

laserfair.cn

Generated: 2026-08-11T04:10:51-05:00 · Cached result

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IPv41
IPv60
MX0
NS2

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

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 records0 / 20 pts · Mail

0 MX record(s).

!
SPF0 / 25 pts · Mail

SPF policy not found.

!
DMARC0 / 25 pts · Mail

DMARC policy not found.

!
DKIM0 / 20 pts · Mail

No tested DKIM selector responded.

!
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.

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)
121.41.5.207

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

0 record(s)
—

Not configured

TXT

0 record(s)
—

Not configured

NS

2 record(s)
dns24.hichina.com.
dns23.hichina.com.

SOA

1 record(s)
dns23.hichina.com. hostmaster.hichina.com. 2026052809 3600 1200 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

Not configured
—

Not configured

DMARC

Not configured
—

Not configured

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
汉诺威深圳激光展丨深圳激光展丨LASERFAIR-LASERFAIR 2026丨 第十九届深圳国际激光与智能装备、光子技术博览会
Description
Final URL
https://laserfair.cn/
HTTP status
206

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://laserfair.cn/
Version
2
Server
Apache
X-Powered-By
PHP/5.2.17

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
DigiCert Inc
CN
laserfair.cn
Valid from
2026-07-27T19:00:00-05:00
Valid until
2027-01-26T17:59:59-06:00
Days remaining
168
Protocol
TLSv1.2
Cipher
ECDHE-RSA-AES256-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
121.41.5.207
302,37 ms
Cloudflare
1.1.1.1
121.41.5.207
451,50 ms
Quad9
9.9.9.9
121.41.5.207
276,66 ms
OpenDNS
208.67.222.222
121.41.5.207
1.875,48 ms
AdGuard
94.140.14.14
121.41.5.207
722,89 ms

IP, geolocation and ASNAssociated network information

121.41.5.207

Identified
success
Yes
country
China
country_code
CN
region
Zhejiang Sheng
city
Hangzhou
latitude
30.2489634
longitude
120.2052342
asn
37963
organization
Aliyun Computing Co., LTD
isp
Hangzhou Alibaba Advertising Co.,Ltd.
timezone
Asia/Shanghai

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

laserfair.cn

Port 25: Closed/unreachable - 992.9 ms - 
Port 465: Closed/unreachable - 4021 ms - 
Port 587: Closed/unreachable - 4010.5 ms -

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