Calt.com 中国运载火箭技术研究院官网

Online Status
Offline

Server IP address resolved: No
Http response code: None
Last Checked: 11/01/2026

Calt.com attracts 1,717 unique visitors daily, generating 3,435 pageviews. The estimated value of calt.com is 2,568 USD. Each visitor views approximately 2.14 pages on average.

Calt.com is hosted by CHINA169-BJ China Unicom Beijing Province Network, CN. Check out other websites hosted by CHINA169-BJ China Unicom Beijing Province Network, CN.

See the list of other websites hosted by CHINA169-BJ China Unicom Beijing Province Network, CN.

Calt.com is registered with the .COM top-level domain. Explore additional websites within the .COM zone.

A recent examination on (September 09, 2024), indicates that calt.com has an expired SSL certificate issued by China Financial Certification Authority (expired on April 01, 2023). Click the "Refresh" button in the Safety Information section for updated SSL details. See the list of websites using SSL certificates issued by China Financial Certification Authority.

According to our data, calt.com may be a suspicious domain.

Based on Google's Mobile-Friendly test, calt.com is optimized for mobile and tablet devices.

Overview
Last Updated: 11/01/2026
Overall result - calt.com is not safe.
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton Connect Safe
Last Updated: 02/18/2026
calt.com is safe.
Norton ConnectSafe evaluates calt.com for any unsafe and insecure content. The results are critical for families with young children.
Google Safe Search
Last Updated: 01/06/2020
calt.com is not safe.
SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.
Google Safe Browsing
Last Updated: 01/09/2019
calt.com is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
Site Advisor
Last Updated: 03/06/2021
calt.com is safe.
McAfee assesses calt.com for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze calt.com for mature or inappropriate content, only security checks are evaluated.
Web of Trust
Last Updated: 11/01/2026
calt.com child safety is unknown.
The WOT calculates reputation of the calt.com. This reputation system receives ratings from users and information from third-party sources, assesses the calt.com for safety features and confirms, whether calt.com is suitable for children.

Calt.com | SSL Certificate Information
Domainwww.astfc.com
Issuer OrganizationChina Financial Certification Authority
IssuerCFCA OV OCA
AlgorithmRSA-SHA256
Valid form04/01/2022
Expiration04/01/2023
SignedCertificate is not self signed
Additional Domains www.astfc.com
Server Location

Calt.com ASN Information

ASN ID: 4808
ASN Title: CHINA169-BJ China Unicom Beijing Province Network, CN

Last Update: 05/10/2026

% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS4608 - AS4864'

as-block: AS4608 - AS4864
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2008-09-04T06:40:26Z
source: APNIC

role: APNIC Hostmaster
address: 6 Cordelia Street
address: South Brisbane
address: QLD 4101
country: AU
phone: +61 7 3858 3100
fax-no: +61 7 3858 3199
e-mail: helpdesk@apnic.net
admin-c: AMS11-AP
tech-c: AH256-AP
nic-hdl: HM20-AP
remarks: Administrator for APNIC
notify: hostmaster@apnic.net
mnt-by: MAINT-APNIC-AP
last-modified: 2013-10-23T04:06:51Z
source: APNIC

% Information related to 'AS4808'

% Abuse contact for 'AS4808' is 'hqs-ipabuse@chinaunicom.cn'

aut-num: AS4808
as-name: CHINA169-BJ
descr: China Unicom Beijing Province Network
country: CN
member-of: AS4837:AS-CNCGROUP
import: from AS4837
action pref=100;
accept ANY
import: from AS9929
action pref=100;
accept AS4814
export: to AS4837
announce AS4808
export: to AS9929
announce AS4808
admin-c: CH1302-AP
tech-c: CH1302-AP
mnt-by: MAINT-CNCGROUP
mnt-irt: IRT-CU-CN
mnt-routes: MAINT-CNCGROUP-RR
last-modified: 2016-05-18T08:44:24Z
source: APNIC

irt: IRT-CU-CN
address: No.21,Financial Street
address: Beijing,100033
address: P.R.China
e-mail: hqs-ipabuse@chinaunicom.cn
abuse-mailbox: hqs-ipabuse@chinaunicom.cn
admin-c: CH1302-AP
tech-c: CH1302-AP
auth: # Filtered
mnt-by: MAINT-CNCGROUP
last-modified: 2017-10-23T05:59:13Z
source: APNIC

person: ChinaUnicom Hostmaster
nic-hdl: CH1302-AP
e-mail: hqs-ipabuse@chinaunicom.cn
address: No.21,Jin-Rong Street
address: Beijing,100033
address: P.R.China
phone: +86-10-66259764
fax-no: +86-10-66259764
country: CN
mnt-by: MAINT-CNCGROUP
last-modified: 2017-08-17T06:13:16Z
source: APNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US4)

WHOIS

Domain Name: CALT.COM
Registry Domain ID: 336761_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.guoxuwang.cn
Registrar URL: http://www.xdns.cn
Updated Date: 2021-12-09T10:41:01Z
Creation Date: 1997-07-06T04:00:00Z
Registry Expiry Date: 2023-07-05T04:00:00Z
Registrar: Beijing Guoxu Network Technology Co., Ltd.
Registrar IANA ID: 1494
Registrar Abuse Contact Email: abuse@guoxuwang.cn
Registrar Abuse Contact Phone: +86.4008092218
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS1.VIPXDNS.COM
Name Server: NS2.VIPXDNS.NET
Name Server: NS3.VIPXDNS.INFO
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2022-09-12T10:37:49Z


DNS Records
HostA RecordTTL
calt.com1.202.156.263600
calt.com114.242.111.343600
HostMX RecordPriorityTTL
HostNS RecordTTL
calt.comns3.guoxuwang.com3600
calt.comns1.guoxuwang.com3600
calt.comns2.guoxuwang.com3600
calt.comns4.guoxuwang.com3600
HostTXT RecordTTL

root.guoxuwang.cn
TTL: 3600
Email address: rname.invalid
Serial: 12
Refresh: 43200
Retry: 3600
Expire: 2419200
Minimum: 3600


Errors
Warnings

Last tested: 05/25/2017

Desktop
Desktop Speed
66%

Desktop Resource Breakdown
Total Resources25
Number of Hosts1
Static Resources24
JavaScript Resources2
CSS Resources2

Last tested: 05/24/2017

Mobile
Mobile Usability
64%
Mobile Speed
60%

Mobile Resource Breakdown
Total Resources27
Number of Hosts2
Static Resources24
JavaScript Resources3
CSS Resources2
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