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: K227BX - PALM SPRINGS, CA
From the NRSC list: 93.30 MHz, PI code D4F1, FCC facility 155851.
info: RadioDNS lookup name
09330.d4f1.da0.fm.radiodns.org (frequency 93.30 MHz, PI D4F1, country code da0)

1. RadioDNS registration

pass: Registered
09330.d4f1.da0.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
1628 ms, 261,333 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: LAist News 93.3
Matched on bearer fm:da0.d4f1.09330
pass: Short name: LAist
pass: Medium name: LAist News 93.3
pass: Long name: LAist SoCal News K227BX 93.3
pass: Short description present
LAist is a local SoCal NEWS member-supported public media network that broadcasts from Santa Barbara to Coachella and streams to the world
pass: Long description present
LAist is a local SoCal NEWS member-supported public media network that broadcasts from Santa Barbara to Coachella and streams to the world
info: No keywords
Optional.
pass: 1 link
https:\\LAist.com
pass: The <radiodns> element matches the registration
fqdn radiodns.prss.org, service identifier 00000000000011b1

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
160x90	160x90	1,503 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/Rapid%20Experia%20KPCC%20_Dark_%20600x600px_172573080.png
128x128	128x128	1,705 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/Rapid%20Experia%20KPCC%20_Dark_%20600x600px_172573054.png
1920x1080	1920x1080	83,721 B	84 kB (under 50 kB recommended) http://radiodns.prss.org/radiodns/spi/3.3/si/img/Rapid%20Experia%20KPCC%20_Dark_%20600x600px_172573074.png
74x41	74x41	539 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/Rapid%20Experia%20KPCC%20_Dark_%20600x600px_172572876.png
32x32	32x32	256 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/Rapid%20Experia%20KPCC%20_Dark_%20600x600px_172573008.png
1400x1400	1400x1400	104,959 B	105 kB (under 50 kB recommended) http://radiodns.prss.org/radiodns/spi/3.3/si/img/Rapid%20Experia%20KPCC%20_Dark_%20600x600px_172573050.png
288x162	288x162	3,676 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/Rapid%20Experia%20KPCC%20_Dark_%20600x600px_172573056.png
1600x1200	1600x1200	93,769 B	94 kB (under 50 kB recommended) http://radiodns.prss.org/radiodns/spi/3.3/si/img/Rapid%20Experia%20KPCC%20_Dark_%20600x600px_172573066.png
1024x768	1024x768	46,748 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/Rapid%20Experia%20KPCC%20_Dark_%20600x600px_172573002.png
86x48	86x48	678 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/Rapid%20Experia%20KPCC%20_Dark_%20600x600px_172572948.png
112x32	112x32	429 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/Rapid%20Experia%20KPCC%20_Dark_%20600x600px_172573060.png
320x240	320x240	6,479 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/Rapid%20Experia%20KPCC%20_Dark_%20600x600px_172573068.png

6. Transmitters and streams

pass: FM bearer fm:da0.d4f1.09330
cost 20
info: No internet stream listed
Optional, but without one receivers cannot switch from FM to an online stream.

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Checked 2026-10-19T21:07:08+00:00 (UTC) from the lookup name 09330.d4f1.da0.fm.radiodns.org.

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