Is your station ready for hybrid radio?

RadioDNS lets connected car radios and receivers show your logo, name and stream. This free checker follows the same steps a receiver does and tells you, in plain English, what works and what to fix.

Working, with 5 suggestions

15 passed · 5 suggestions · 0 problems

What is being checked

info: RadioDNS lookup name
08950.6bbb.6a0.fm.radiodns.org (frequency 89.50 MHz, PI 6BBB, country code 6a0)

1. RadioDNS registration

pass: Registered
08950.6bbb.6a0.fm.radiodns.org points to the station's authoritative domain: radiodns.prss.org

2. Service discovery (SRV records)

info: _radiospi._tcp.radiodns.prss.org: not published
pass: _radioepg._tcp.radiodns.prss.org published
priority 10, weight 60, port 80 -> radiodns.prss.org [target is an alias of contentdepot.prss.org]
warn: SRV target radiodns.prss.org is a CNAME alias
DNS rules (RFC 2782) say an SRV record should point at a name that has address records directly, not at an alias. Many resolvers cope, some do not.
What to do: Give radiodns.prss.org its own A/AAAA record (or point the SRV record at the real host name).
warn: Only the older _radioepg record is published
What to do: Add _radiospi._tcp.radiodns.prss.org on port 443 as well, so receivers that use HTTPS can find the SI file.
info: _radiovis._tcp: not published
Slideshow/visuals (STOMP) - optional, only needed for a live slideshow service.
info: _radiopush._tcp: not published
Slideshow/visuals (Server-Sent Events) - optional, only needed for a live slideshow service.
info: _radiovis-http._tcp: not published
Slideshow/visuals (HTTP) - optional, only needed for a live slideshow service.

3. Service Information file (SI.xml)

pass: HTTP endpoint http://radiodns.prss.org/radiodns/spi/3.1/SI.xml answered
386 ms, 261,334 bytes
pass: Content type is application/xml
warn: SI file has no caching headers
What to do: Add Cache-Control: max-age (for example 86400 for 24 hours). Without it, receivers guess - and some ignore the content.
pass: The file follows the official SI schema (current (3.4/3.5))
Validated against the schema published by WorldDAB/RadioDNS.

Guides: Make an SI file accessible (PDF) · Build an SI file with RadioDNS's tool

4. Your station in the file

info: 76 services in the file
pass: Station found: WITF
Matched on bearer fm:6a0.6bbb.08950
pass: Short name: WITF
pass: Medium name: WITF
pass: Long name: WITF
pass: Short description present
Your home NPR and stories that spark curiosity.
pass: Long description present
WITF inspires lifelong learning by connecting people and communities of Pennsylvania through trusted journalism, thoughtful discussion and educational experiences.
info: No keywords
Optional.
pass: 1 link
https://witf.org/
pass: The <radiodns> element matches the registration
fqdn radiodns.prss.org, service identifier 0000000000000e23

5. Logos

pass: All five standard logo sizes are listed
warn: Logos have no caching headers
What to do: Add Cache-Control: max-age (for example 86400 for 24 hours). Without it, receivers guess - and some ignore the content.
info: Logo checks limited
Only the first logos were fetched.
warn: 12 logos downloaded and checked

Declared	Actual	Size	Result
112x32	112x32	946 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/witf%20logo%20square_186892852.jpg
128x128	128x128	2,646 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/witf%20logo%20square_186892438.jpg
1400x1400	1400x1400	50,449 B	50 kB (under 50 kB recommended) http://radiodns.prss.org/radiodns/spi/3.3/si/img/witf%20logo%20square_186892688.jpg
86x48	86x48	1,255 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/witf%20logo%20square_186892932.jpg
600x600	600x600	15,358 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/witf%20logo%20square_186892682.jpg
1024x768	1024x768	23,616 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/witf%20logo%20square_186892684.jpg
288x162	288x162	3,569 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/witf%20logo%20square_186892850.jpg
220x48	220x48	1,353 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/witf%20logo%20square_186892604.jpg
170x170	170x170	3,637 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/witf%20logo%20square_186892686.jpg
74x41	74x41	1,136 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/witf%20logo%20square_186892936.jpg
1600x1200	1600x1200	47,310 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/witf%20logo%20square_186892602.jpg
160x90	160x90	1,990 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/witf%20logo%20square_186892934.jpg

6. Transmitters and streams

pass: FM bearer fm:6a0.6bbb.08950
cost 20
info: Other bearer: hd:292.11d7c
Not checked by this tool.
info: No internet stream listed
Optional, but without one receivers cannot switch from FM to an online stream.

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Checked 2026-10-22T08:04:08+00:00 (UTC) from the lookup name 08950.6bbb.6a0.fm.radiodns.org.

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