Jeffco.us Jefferson County, CO | Official Website
The home page for Jefferson County Colorado.
Server IP address resolved: Yes
Http response code: 200
Response time: 0.25 sec.
Last Checked: 01/23/2025
Jeffco.us attracts 1,930 unique visitors daily, generating 6,756 pageviews. The estimated value of jeffco.us is 124,976 USD. Each visitor views approximately 3.75 pages on average.
According to Majestic's traffic estimates, jeffco.us ranks 26,912 globally, with the majority of its visitors coming from United States, where it holds the 24,701 position.
It is beneficial for jeffco.us that their data center (provided by JCC-ASN - Jefferson County, Colorado, US) is located in United States, as this helps reduce page load time for most visitors.
See the list of other websites hosted by JCC-ASN - Jefferson County, Colorado, US.
Jeffco.us is registered with the .US top-level domain. Explore additional websites within the .US zone.
The last inspection on (October 09, 2024), confirms that jeffco.us holds a valid and current SSL certificate issued by DigiCert Inc expiring on February 10, 2025. Click the "Refresh" button in the Safety Information section for updated SSL details. See the list of websites using SSL certificates issued by DigiCert Inc.
According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust jeffco.us appears to be a safe domain.
Based on Google's Mobile-Friendly test, jeffco.us is optimized for mobile and tablet devices, although the web page loading speed could be improved.
Audience Geography. Where are jeffco.us visitors located?
| Country | Visitors |
|---|---|
 United States US | 71.9% |
| Japan JP | 25.5% |
| India IN | 1% |
| Other | 1.6% |
| Country | Pageviews |
|---|---|
| United States US | 84.2% |
| Japan JP | 12.9% |
| India IN | 0.7% |
| Other | 2.2% |
| Country | Rank |
|---|---|
| United States US | 24701 |
| Japan JP | 31954 |
| India IN | 286900 |
Where do visitors go on jeffco.us?
| Subdomain | Pageviews |
|---|---|
| jeffco.us | 42.39% |
| co.jeffco.us | 12.88% |
| propertysearch.jeffco.us | 12.85% |
| inmatelookup.jeffco.us | 12.85% |
| sts.jeffco.us | 4.51% |
| gis.jeffco.us | 4.47% |
| meetings.jeffco.us | 1.11% |
| time.jeffco.us | 1% |
| other | 7.96% |
| Subdomain | Pageviews per User |
|---|---|
| co.jeffco.us | 6.9 |
| propertysearch.jeffco.us | 4.7 |
| jeffco.us | 2.4 |
| time.jeffco.us | 2 |
| meetings.jeffco.us | 2 |
| inmatelookup.jeffco.us | 2 |
| gis.jeffco.us | 1.8 |
| sts.jeffco.us | 1.4 |
| Subdomain | Reach |
|---|---|
| jeffco.us | 59% |
| inmatelookup.jeffco.us | 27.34% |
| sts.jeffco.us | 11.27% |
| propertysearch.jeffco.us | 9.33% |
| gis.jeffco.us | 8.22% |
| co.jeffco.us | 6.33% |
| time.jeffco.us | 2.1% |
| meetings.jeffco.us | 2.06% |
How popular is jeffco.us?
| Period | Global Rank | Global Rank Delta |
|---|---|---|
| past 3 months | 105262 | -938 |
| past month | 102971 | -2671 |
| past week | 115098 | 16837 |
| yesterday | 203471 | 100726 |
| Days | Pageviews Rank | Pageviews Rank Delta | Pageviews per Million | Pageviews per Million Delta | Pageviews per User | Pageviews per User Delta |
|---|---|---|---|---|---|---|
| 90 | 98873 | -1784 | 55 | 3% | 3.5 | 3% |
| 30 | 99673 | 3340 | 55 | -2.9% | 3.4 | -10.58% |
| 7 | 96771 | 3264 | 6 | -3.75% | 4.5 | 20% |
| 1 | 190646 | 119612 | 28 | -66.05% | 4 | -40.58% |
| Days | Reach Rank | Reach Rank Delta | Reach per Million | Reach per Million Delta |
|---|---|---|---|---|
| 90 | 115068 | -133 | 57 | -0.17% |
| 30 | 111676 | -5556 | 6 | 9% |
| 7 | 133620 | 25113 | 49 | -21.94% |
| 1 | 222278 | 85097 | 3 | -42.84% |
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 ConnectSafe evaluates jeffco.us for any unsafe and insecure content. The results are critical for families with young children.
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.
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.
McAfee assesses jeffco.us 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 jeffco.us for mature or inappropriate content, only security checks are evaluated.
The WOT calculates reputation of the jeffco.us. This reputation system receives ratings from users and information from third-party sources, assesses the jeffco.us for safety features and confirms, whether jeffco.us is suitable for children.
| Domain | jeffco.us |
| Issuer Organization | DigiCert Inc |
| Issuer | GeoTrust TLS RSA CA G1 |
| Algorithm | RSA-SHA512 |
| Valid form | 01/11/2024 |
| Expiration | 02/10/2025 |
| Signed | Certificate is not self signed |
| Additional Domains |
jeffco.us www.jeffco.us *.admin.co.jeffco.us *.jeffco.us |
ASN ID: 53529
ASN Title: JCC-ASN - Jefferson County, Colorado, US
Last Update: 07/19/2024
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#
ASNumber: 53529
ASName: JCC-ASN
ASHandle: AS53529
RegDate: 2010-06-01
Updated: 2012-02-24
Ref: https://rdap.arin.net/registry/autnum/53529
OrgName: Jefferson County, Colorado
OrgId: JCC-9
Address: IT-Operations Dept.
Address: 3500 Illinois St. Suite 2500
City: Golden
StateProv: CO
PostalCode: 80401
Country: US
RegDate: 1994-04-18
Updated: 2013-07-26
Comment: Jefferson County, Colorado Administration
Ref: https://rdap.arin.net/registry/entity/JCC-9
OrgTechHandle: NETWO3805-ARIN
OrgTechName: NetworkAdmin
OrgTechPhone: +1-303-271-8834
OrgTechEmail: ITS-ARIN@co.jefferson.co.us
OrgTechRef: https://rdap.arin.net/registry/entity/NETWO3805-ARIN
OrgAbuseHandle: NETWO3805-ARIN
OrgAbuseName: NetworkAdmin
OrgAbusePhone: +1-303-271-8834
OrgAbuseEmail: ITS-ARIN@co.jefferson.co.us
OrgAbuseRef: https://rdap.arin.net/registry/entity/NETWO3805-ARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#
Domain Name: jeffco.us
Registry Domain ID: D1878362-US
Registrar WHOIS Server:
Registrar URL: www.register.com
Updated Date: 2023-02-13T16:07:03Z
Creation Date: 2002-04-24T17:57:11Z
Registry Expiry Date: 2028-04-23T23:59:59Z
Registrar: Register.com, Inc.
Registrar IANA ID: 9
Registrar Abuse Contact Email: abuse@web.com
Registrar Abuse Contact Phone: +1.8003337680
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: C1255AEC00DA54B4FB329E4F2C6128A01-NSR
Registrant Name: Systems Team
Registrant Organization:
Registrant Street: 3500 ILLINOIS ST STE 2500
Registrant Street: IT SERVICES
Registrant Street:
Registrant City: Golden
Registrant State/Province: CO
Registrant Postal Code: 80401-6022
Registrant Country: US
Registrant Phone: +1.3032718039
Registrant Phone Ext:
Registrant Fax: +1.8886429675
Registrant Fax Ext:
Registrant Email: its-unix@co.jefferson.co.us
Registrant Application Purpose: P5
Registrant Nexus Category: C21
Registry Admin ID: C1255AEC00DA54B4FB329E4F2C6128A01-NSR
Admin Name: Systems Team
Admin Organization:
Admin Street: 3500 ILLINOIS ST STE 2500
Admin Street: IT SERVICES
Admin Street:
Admin City: Golden
Admin State/Province: CO
Admin Postal Code: 80401-6022
Admin Country: US
Admin Phone: +1.3032718039
Admin Phone Ext:
Admin Fax: +1.8886429675
Admin Fax Ext:
Admin Email: its-unix@co.jefferson.co.us
Admin Application Purpose: P5
Admin Nexus Category: C21
Registry Tech ID: CD97C1F8573E248B6868337F9E9BB0E6B-NSR
Tech Name: Domain Registrar
Tech Organization: Registercom
Tech Street: 575 8th Avenue
Tech Street:
Tech Street:
Tech City: New York
Tech State/Province: NY
Tech Postal Code: 10018
Tech Country: US
Tech Phone: +1.9027492701
Tech Phone Ext:
Tech Fax: +1.9027492701
Tech Fax Ext:
Tech Email: domainregistrar@register.com
Tech Application Purpose: P1
Tech Nexus Category: C11
Name Server: dns1.jeffco.us
Name Server: dns2.jeffco.us
Name Server: ns1.f5cloudservices.com
Name Server: ns2.f5cloudservices.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2024-09-20T17:13:08Z
| Host | A Record | TTL |
|---|---|---|
| jeffco.us | 199.184.241.62 | 900 |
| Host | MX Record | Priority | TTL |
|---|---|---|---|
| jeffco.us | cluster6.us.messagelabs.com | 10 | 86400 |
| jeffco.us | cluster6a.us.messagelabs.com | 20 | 86400 |
| Host | NS Record | TTL |
|---|---|---|
| jeffco.us | dns1.jeffco.us | 86400 |
| jeffco.us | dns2.jeffco.us | 86400 |
| Host | TXT Record | TTL |
|---|---|---|
| jeffco.us | v=spf1 mx include:_spf.mlsend.com include:spf.protection.outlook.com include:servers.mcsv.net include:spf.messagelabs.com include:_spf.salesforce.com include:mailgun.org -all | 3600 |
| jeffco.us | xbWyPvXitPBYdA8X0s1s7a46bPnubZyJQ2q8at8rX+0= | 3600 |
| jeffco.us | MS=ms10079852 | 3600 |
| jeffco.us | YuOuZJpJrG17qnYAzhTjuS+k1nVtvqoVtQOwZG+XghslglApH+dVoG3hVaPkCiD8n7o/8oysz+iKUeIPo1HMwg== | 3600 |
dns1.jeffco.us
TTL: 86400
Email address: its-unix.jeffco.us
Serial: 2019080803
Refresh: 1200
Retry: 3600
Expire: 2419200
Minimum: 86400
Last tested: 11/15/2016
| Total Resources | 52 |
| Number of Hosts | 8 |
| Static Resources | 35 |
| JavaScript Resources | 9 |
| CSS Resources | 6 |
Last tested: 05/27/2017
| Total Resources | 53 |
| Number of Hosts | 9 |
| Static Resources | 35 |
| JavaScript Resources | 9 |
| CSS Resources | 6 |
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