D
AT RISK
ISP-supplied. Foreign-manufactured and subject to the FCC's March 23, 2026 ban on new foreign-produced routers. Your ISP may replace this device on request. For stronger security, you can also install Rio Router behind your ISP equipment.
- Foreign manufacture — FCC ban applies: The GigaSpire BLAST is manufactured in China. The FCC's March 2026 rule applies to ISP-supplied premises equipment as well as retail routers.
- ISP controls all configuration: Calix GigaSpire devices are fully managed by your ISP. You cannot independently audit the firmware or configure advanced security settings.
- US company — no Chinese government legal exposure: Calix Inc. is a US public company. The concern here is manufacturing origin, not ownership jurisdiction.
FCC & Ban Risk
54
/100
C
Supply chain · FCC status · CVEs · Patch support
Security Capabilities
12
/100
F
Zero-Trust · VPN · Segmentation · Monitoring
🏭 Manufacturer
US-headquartered
Calix, Inc., San Jose, CA — NYSE: CALX. GigaSpire BLAST family ISP-premises equipment manufactured in China.
Manufactured in: China
🏛️ FCC Status
FCC authorized — foreign manufacture rule applies
Foreign manufacture — subject to FCC March 2026 ban
🛡️ Patch Support
Managed by ISP
Whether security vulnerabilities are actively being patched
⚠️ Key Finding
high
Foreign manufacture — FCC ban applies
Router Security Updates
Get notified if new vulnerabilities are discovered for your Calix GigaSpire BLAST u4. Free, no spam.
🔒
Security capabilities comparison
We benchmark your router against Rio Router across 8 dimensions so you can see exactly what gaps exist - and what a fully-covered setup looks like.
CALIX
your router
Rio Router™
full standard
Zero-Trust Device Admission
Every new device is blocked by default - admin must approve it once, even if it has the right password
Locked
Available
Network Segmentation (VLANs)
Devices on your network are isolated from each other, so a hacked smart TV can't reach your laptop
Locked
Available
Router-Level VPN for All Devices
All traffic - including smart devices that can't run VPN apps - is encrypted before leaving your home
Locked
Available
Domain Allowlisting
Block everything except approved sites; more effective than trying to blacklist billions of harmful URLs
Locked
Available
Granular Password Control
Separate passwords per network zone - changing one doesn't affect others
Locked
Available
Guest Auto-Expiry
Guest devices are automatically removed when they leave; neighbors can't reconnect without re-approval
Locked
Available
Clean Supply Chain
Manufactured outside Chinese legal jurisdiction - not subject to China's National Intelligence Law
Locked
Available
Active Threat Monitoring
DNS filtering, firewall, activity logs, and ongoing security patch support
Partial
Available
We use Rio Router as the benchmark because it’s the only consumer router built to score 8/8 on this framework - it shows you what a fully-covered setup looks like, not just what’s typical.
See Rio →
See all Calix models: Calix brand overview →
What you should do
1
Contact your ISP to ask about hardware replacement options under the FCC rule
2
Ask if a US-manufactured alternative is available from your provider
3
For advanced control, consider placing a secondary router behind the gateway in DMZ mode
How this was scored · verified March 2026: This rating combines FCC authorization status, manufacturer legal jurisdiction, CVEs from NIST NVD, active patch support status, and CISA advisory mentions. See full methodology →
Reference Data
Sources & evidence
All findings trace to publicly verifiable primary sources - US government databases, official FCC filings, and NIST CVE records. No proprietary or anonymous sources are used.
Full data source documentation: Scoring Methodology & Citations →