cbo.gov - Email Domain Verification & Deliverability Report

Active Government Email
Organization: Congressional Budget Office
Mail Server: Proofpoint
Verified 1 days ago

Verify email addresses @cbo.gov. View MX records, mail server configuration, and authentication status for Congressional Budget Office.

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MX Records for cbo.gov

PriorityMail ServerIP Address
10 mxb-001ec201.gslb.pphosted.com 148.163.157.155
10 mxa-001ec201.gslb.pphosted.com 148.163.157.155
SMTP Status: Responding
SMTP Banner:
220 mx0a-001ec201.pphosted.com ESMTP mfa-m0088986

cbo.gov uses Proofpoint mail servers, which means emails are processed through Proofpoint infrastructure with their built-in spam filtering and security controls.

Email Authentication for cbo.gov

SPF Record Pass

v=spf1 include:cbo.gov._nspf.valigov.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.valigov.email ~all
Authorized Senders:
cbo.gov._nspf.valigov.email %{i}._ip.%{h}._ehlo.%{d}._spf.valigov.email

SPF (Sender Policy Framework) specifies which mail servers are authorized to send email on behalf of cbo.gov.

DMARC Record Quarantine

v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@valigov.email; ruf=mailto:brad.hicks@cbo.gov

DMARC (Domain-based Message Authentication) tells receiving servers what to do with emails that fail authentication checks.

DKIM Not Detected

DKIM detection is limited from external scanning. The domain may use DKIM with selectors not covered by our scan.

Authentication Summary: cbo.gov has SPF and DMARC configured. This provides good protection against email spoofing. Senders can expect reliable email delivery to this domain.

WHOIS & Domain Information

Registration Details

Domain
cbo.gov
TLD
.gov
Created
1997-10-01
Updated
2025-08-20
Expires
2026-08-15
Domain Age
28 years

Registrar

Name
get.gov
IANA ID
93

Registrant Contact

Name
REDACTED FOR PRIVACY
Organization
REDACTED FOR PRIVACY
Location
REDACTED FOR PRIVACY, REDACTED FOR PRIVACY, UNITED STATES

Technical Contact

Name
REDACTED FOR PRIVACY
Organization
REDACTED FOR PRIVACY
Location
REDACTED FOR PRIVACY, REDACTED FOR PRIVACY, UNITED STATES

Name Servers

  • pdns89.ultradns.biz
  • pdns89.ultradns.com
  • pdns89.ultradns.net
  • pdns89.ultradns.org

Email Verification for cbo.gov Government Addresses

The domain cbo.gov belongs to the Congressional Budget Office (CBO), a nonpartisan federal agency within the legislative branch of the U.S. government. Based in Washington, D.C., the CBO provides the U.S. Congress with objective, independent analysis of budgetary and economic issues to support the federal budget process and policy decisions.

As a federal .gov domain, cbo.gov is subject to CISA Binding Operational Directive 18-01, requiring implementation of DMARC, SPF, and DKIM. Email authentication protects CBO communications from spoofing attempts, which could be used to distribute false budget projections or economic analyses under the guise of official CBO reports.

CBO mail servers do not operate as catch-all systems. The SMTP infrastructure validates recipient addresses and rejects messages to nonexistent mailboxes. As a legislative branch agency, CBO email servers employ greylisting, rate limiting, and connection filtering to manage inbound messages.

Successful email delivery to cbo.gov requires strict adherence to authentication standards. Federal email gateways apply thorough content filtering, attachment scanning, and reputation analysis. Senders must maintain properly configured SPF, DKIM, and DMARC records and a clean sending history for reliable delivery to CBO addresses.

How to Verify cbo.gov Email Addresses

Need to check if an email address at cbo.gov actually exists before you send to it? BulkEmailChecker performs deep SMTP-level validation, connecting directly to cbo.gov's mail servers to confirm the mailbox is real, active, and able to receive your message. No test email is ever sent, so your sender reputation stays protected.

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Verify cbo.gov Emails via API in Real-Time
Building a signup form, CRM integration, or lead capture system? BulkEmailChecker's real-time verification API validates cbo.gov email addresses at the point of entry, blocking invalid, disposable, and risky addresses before they enter your database. Integrate with a single API call and prevent bad data at the source.

Frequently Asked Questions

Yes, cbo.gov is a valid official government email domain operated by Congressional Budget Office. It is used by government employees and officials for official correspondence.
No, cbo.gov is not a disposable or temporary email provider. It is an official government domain used for legitimate government communications and operations.
cbo.gov uses mail servers managed by Congressional Budget Office. Check the MX records section above for specific server details and authentication configuration.
Yes, cbo.gov addresses accept incoming email. Government mail servers typically enforce strict spam filtering, authentication checks (SPF, DKIM, DMARC), and content scanning. Ensure your sending domain is properly authenticated.
Use BulkEmailChecker to verify cbo.gov addresses. Government domains may have specific SMTP behaviors including greylisting and strict rate limiting. Our tool handles these provider-specific configurations automatically.
The fastest and most accurate way to verify a cbo.gov email address is to use BulkEmailChecker's free email verification tool. Simply enter the full email address and our system performs SMTP-level validation by connecting directly to cbo.gov's mail servers. You'll get instant results showing whether the mailbox exists, is deliverable, and is safe to send to, all without sending a single email.
Yes. BulkEmailChecker uses SMTP verification to check if a cbo.gov mailbox exists without ever delivering an email. Our system connects to the domain's mail server, performs an SMTP handshake, and queries the mail server to confirm whether the recipient address is valid. This process is completely invisible to the email recipient and does not affect your sender reputation.
Sending to invalid email addresses causes hard bounces, which directly damage your sender reputation. Internet Service Providers (ISPs) and email providers track your bounce rate, and if it exceeds 2%, your emails may start landing in spam folders or get blocked entirely. Verifying cbo.gov addresses with BulkEmailChecker before sending prevents bounces and keeps your deliverability high.
BulkEmailChecker's bulk verification service lets you upload a CSV or TXT file containing thousands of cbo.gov email addresses and verify them all at once. Each address goes through 30+ verification checks including syntax validation, DNS/MX lookup, SMTP verification, disposable domain detection, and spam trap identification. Results are typically ready within minutes and can be downloaded as a clean, verified list.
Email verification is the process of confirming that an email address is real, properly formatted, and capable of receiving messages. It matters because sending to invalid addresses causes bounces, damages your sender reputation, wastes marketing budget, and can get your sending IP blacklisted. BulkEmailChecker verifies addresses at the SMTP level, the most accurate method available, ensuring your emails reach real people.
MX (Mail Exchange) records are DNS entries that specify which mail servers are responsible for receiving email for a domain. When you send an email, your mail server looks up the recipient domain's MX records to find where to deliver the message. If a domain has no MX records, it cannot receive email. BulkEmailChecker checks MX records as part of every verification to confirm the domain is configured for email delivery.
A catch-all (or accept-all) domain is configured to accept email sent to any address at that domain, regardless of whether the specific mailbox exists. This makes it harder to verify individual addresses because the server always responds positively. BulkEmailChecker detects catch-all configurations and flags them in verification results so you can make informed decisions about sending to those addresses.
Yes. BulkEmailChecker offers a real-time email verification API that you can integrate into signup forms, CRM systems, lead capture tools, and any application that collects email addresses. The API validates addresses at the point of entry, blocking invalid, disposable, and risky emails before they enter your database. Integration takes just a single API call with response times under 3 seconds.

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