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
09030.3bc2.3a0.fm.radiodns.org (frequency 90.30 MHz, PI 3BC2, country code 3a0)

1. RadioDNS registration

pass: Registered
09030.3bc2.3a0.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
651 ms, 261,690 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: KUOW FM Seattle
Matched on bearer fm:3a0.3bc2.09030
pass: Short name: KUOW 949
pass: Medium name: KUOW FM Seattle
pass: Long name: KUOW Seattle's NPR News Station
warn: No short description
What to do: Add a one-sentence description (up to 180 characters).
info: No long description
Optional (up to 1200 characters).
info: No keywords
Optional.
pass: 1 link
https://www.kuow.org/
pass: The <radiodns> element matches the registration
fqdn radiodns.prss.org, service identifier 0000000000001274

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.
pass: 7 logos downloaded and checked

Declared	Actual	Size	Result
320x240	320x240	12,795 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/HD%20Radio%20Display_168385586.png
32x32	32x32	477 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/HD%20Radio%20Display_168385584.png
600x600	600x600	49,629 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/HD%20Radio%20Display_168385576.png
128x128	128x128	4,092 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/HD%20Radio%20Display_168385580.png
170x170	170x170	6,389 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/HD%20Radio%20Display_168385582.png
112x32	112x32	591 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/HD%20Radio%20Display_168385692.png
600x600	600x600	49,629 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/HD%20Radio%20Display_168385578.png

6. Transmitters and streams

info: Other bearer: fm:4a0.4652.09490
Not checked by this tool.
info: Other bearer: hd:292.1040b
Not checked by this tool.
pass: FM bearer fm:3a0.3bc2.09030
cost 20
info: Other bearer: hd:292.2a96d
Not checked by this tool.
pass: Stream OK: http://playerservices.streamtheworld.com/api/livestream-redirect/KUOWFM_HIGH_MP3.mp3
audio/mpeg, 96 kbps
No offset set (optional): if the stream runs behind the broadcast, an offset in milliseconds lets receivers line the two up.

Check another station Link to this result Download as JSON

Checked 2026-10-20T11:13:09+00:00 (UTC) from the lookup name 09030.3bc2.3a0.fm.radiodns.org.

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