Domain technical report
51LA - 领先的数据统计服务商
51.la
51LA - 领先的数据统计服务商
IPv41
IPv60
MX1
NS2
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62
Total
80
DNS
20
Email
65
Security
20
Network
100
Availability
Domain51.la
IPv41
IPv60
MX records1
StatusActive
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 chain15 / 15 pts · Dns
DS and DNSKEY detected.
CAA policy5 / 5 pts · Dns
Certificate authority restriction.
DNS propagation0 / 10 pts · Dns
Agreement between public resolvers.
MX records20 / 20 pts · Mail
1 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
68 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 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/2 200
HTTPS final URL20 / 20 pts · Availability
Final URL uses HTTPS.
DNS and emailPublished records and email configuration
A
2 record(s)51.la.eo.dnse3.com. 43.159.107.113
AAAA
1 record(s)51.la.eo.dnse3.com.
CNAME
1 record(s)51.la.eo.dnse3.com.
MX
1 record(s)51.la.eo.dnse3.com.
TXT
0 record(s)—
Not configured
NS
2 record(s)u1.xundns.com. u2.xundns.com.
SOA
1 record(s)51.la.eo.dnse3.com.
CAA
1 record(s)51.la.eo.dnse3.com.
DS
1 record(s)51.la.eo.dnse3.com.
DNSKEY
1 record(s)51.la.eo.dnse3.com.
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 <<>> 51.la RRSIG +short +time=1 +tries=1 ;; global options: +cmd ;; no servers could be reached
NSEC
0 record(s)—
Not configured
NSEC3
1 record(s)51.la.eo.dnse3.com.
SRV
1 record(s)51.la.eo.dnse3.com.
NAPTR
1 record(s)51.la.eo.dnse3.com.
TLSA
1 record(s)51.la.eo.dnse3.com.
SSHFP
1 record(s)51.la.eo.dnse3.com.
SPF
Not configured—
Not configured
DMARC
Not configured—
Not configured
DKIM
Not found—
Not configured
Analyzed webpageMetadata and HTTP response
Title and description
ExtractedTitle
51LA - 领先的数据统计服务商
Description
51LA - 领先的数据统计服务商
Final URL
https://51.la/
HTTP status
206
HTTP
Status
HTTP/2 200
Final URL
https://51.la/
Version
3
Server
nginx/1.20.1
X-Powered-By
SSL and HTTP securityCertificate, protocol and security headers
SSL certificate
AvailableAvailable
Yes
Issuer
PKI(Chongqing) Limited
CN
*.51.la
Valid from
2026-04-01T01:48:26-05:00
Valid until
2026-10-16T10:59:59-05:00
Days remaining
68
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384
Security headers
0 activeHSTSNot 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
ReviewDifferences detected
5 public resolvers queried.
ResolverServerResultLatency
Google
8.8.8.843.159.107.113
139,43 ms
Cloudflare
1.1.1.143.159.107.113
242,74 ms
Quad9
9.9.9.9106.74.32.242, 112.46.240.47, 117.187.133.33, 120.52.95.244, 125.74.108.43, 157.0.3.28, 183.60.255.94, 218.60.100.155, 27.159.90.74, 36.150.90.74
2.173,01 ms
OpenDNS
208.67.222.22243.159.107.113
157,40 ms
AdGuard
94.140.14.1443.159.107.113
160,43 ms
IP, geolocation and ASNAssociated network information
43.159.107.113
No datasuccess
No
country
region
city
asn
organization
isp
Visitor information
Visitorip
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
51.la.eo.dnse3.com
Port 25: Closed/unreachable - 38.1 ms - Port 465: Closed/unreachable - 23.3 ms - Port 587: Closed/unreachable - 23.6 ms -