Hello all,

I've just disabled my phones caller-ID (using instructions found on the
web), but would like to know if its possible to switch it on *for the
current call only*.

In my country I can /disable/ the caller-ID for the current call only by prefixing the phone number with #31#, but could not find if it would perhaps act in the reverse when the caller-ID is already disabled...

Or better yet, is there a similar-but-different prefix (#30# or alike) which will re-enable the caller-ID for the current call (so I can prefix the phone-numbers in my list of contacts with them - and not have to remove them when I re-enable the caller-ID again.) ?

Does anyone have some experience with the above and can tell ?

Regards,
Rudy Wieser



--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

"R.Wieser" <address@is.invalid> wrote:

I've just disabled my phones caller-ID (using instructions found on
the web), but would like to know if its possible to switch it on *for
the current call only*.

In my country I can /disable/ the caller-ID for the current call only
by prefixing the phone number with #31#, but could not find if it
would perhaps act in the reverse when the caller-ID is already
disabled...

Or better yet, is there a similar-but-different prefix (#30# or
alike) which will re-enable the caller-ID for the current call (so I
can prefix the phone-numbers in my list of contacts with them - and
not have to remove them when I re-enable the caller-ID again.) ?

<Side issue of being anonymous>
You'll get your anonymous calls often if not usually blocked. When
Caller-ID is disabled (for your outbound calls), you are seen as
Anonymous. If a recipient blocks Anonymous callers, you won't get
through. Anonymous callers can be blocked, or immediately redirected to voicemail. In either case the recipient's phone will not ring when you
call them.
</Side issue>

[Vertical] service codes aka feature access codes are not univeral.
What works at one telco may be a different code at a different telco, or
not have an equivalent code at the other telco. Sometimes you can find
a list of their codes either at their website, or mentioned somewhere
online. You could call their customer service to find out if they will
divulge their codes. If you are using an MVNO (Mobile Virtual Network Provider; e.g., Tracfone), they don't define the service codes, and
you'll have to check with whomever they assigned to you as your real
telco. You could try a web search on "<telco> service codes" or
"<telco> feature codes".

If you have an online account with your telco, log into it to see if
they have user-configurable options regarding anonymous calling. If
using an MVNO, they are very unlikely to list the feature codes since
that depends on who is the actual telco to which they assigned you.

--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

On 4/28/2026 5:39 AM, R.Wieser wrote:

Hello all,

I've just disabled my phones caller-ID (using instructions found on the
web), but would like to know if its possible to switch it on *for the
current call only*.

In my country I can /disable/ the caller-ID for the current call only by prefixing the phone number with #31#, but could not find if it would perhaps act in the reverse when the caller-ID is already disabled...

Or better yet, is there a similar-but-different prefix (#30# or alike) which will re-enable the caller-ID for the current call (so I can prefix the phone-numbers in my list of contacts with them - and not have to remove them when I re-enable the caller-ID again.) ?

Does anyone have some experience with the above and can tell ?

In North America: for current call, *82 enables Caller ID whereas *85
disables (doesn't show) it. Both perform their function regardless of
what the default status of your line is.

Yes, these two prefixes can be entered into a contact's number so they
are dialed every time.

See the topic "Vertical service code" on Wikipedia or similar.

-David

--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

On 2026-04-28 15:54, VanguardLH wrote:

"R.Wieser" <address@is.invalid> wrote:

I've just disabled my phones caller-ID (using instructions found on
the web), but would like to know if its possible to switch it on *for
the current call only*.

In my country I can /disable/ the caller-ID for the current call only
by prefixing the phone number with #31#, but could not find if it
would perhaps act in the reverse when the caller-ID is already
disabled...

Or better yet, is there a similar-but-different prefix (#30# or
alike) which will re-enable the caller-ID for the current call (so I
can prefix the phone-numbers in my list of contacts with them - and
not have to remove them when I re-enable the caller-ID again.) ?

<Side issue of being anonymous>
You'll get your anonymous calls often if not usually blocked. When
Caller-ID is disabled (for your outbound calls), you are seen as
Anonymous. If a recipient blocks Anonymous callers, you won't get
through. Anonymous callers can be blocked, or immediately redirected to voicemail. In either case the recipient's phone will not ring when you
call them.
</Side issue>

Absolutely.

--
Cheers, Carlos.
ES??, EU??;

--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

David,

In North America: for current call, *82 enables Caller ID whereas
*85 disables (doesn't show) it

Thats a part of the problem : Although I could find, for my country, the
code to *disable* caller-ID for a single call (#31#), I cant seem to find
the number to *enable* it for a single call.

The other part is that I've disabled caller-ID by way of a configuration setting in my android, not by using a a phone-number prefix. iow, I'm not
at all sure that that configuration setting can be overridden by a phone-number prefix.

Regards,
Rudy Wieser



--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

VanguardLH,

When Caller-ID is disabled (for your outbound calls), you are
seen as Anonymous. If a recipient blocks Anonymous callers,
you won't get through.

Ding, ding, ding, ding! You win a prize!

Yes, thats exactly why I want to enable my caller-id for certain special phone-numbers.

[Vertical] service codes aka feature access codes are not univeral.

Yep. I got reminded of it when I found a list with similar, but different codes for a number of countries.

If you have an online account with your telco,

As far as I can tell that is not something my telco offers.

Regards,
Rudy Wieser



--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

"R.Wieser" <address@is.invalid> wrote:

VanguardLH,

When Caller-ID is disabled (for your outbound calls), you are seen as
Anonymous. If a recipient blocks Anonymous callers, you won't get
through.

Ding, ding, ding, ding! You win a prize!

So, why call them anonymously in the first place knowing there's a good
chance they will block you, or immediately redirect you to voicemail?
Just call only the recipients that you do want to talk to.

Patient: Doctor, it hurts when I do this.
Doctor: Don't do that.

Yes, thats exactly why I want to enable my caller-id for certain
special phone-numbers.

[Vertical] service codes aka feature access codes are not univeral.

Yep. I got reminded of it when I found a list with similar, but
different codes for a number of countries.

I use Verizon through an MVNO (Tracfone, acquired later by Verizon).
Verizon's feature codes are listed at:

https://www.verizon.com/support/pound-star-codes/

They list:

*67 + 10-digit phone number Block Caller ID for a single call
*82 + 10-digit phone number Unblock Caller ID for a single call

That Verizon has the unblock feature code does not mean your telco has a similar feature code. The unblock code assumes they provide a user-configurable option to send or not send your Caller-ID by default.

I'm not sure that feature code list is complete. For example, I thought
*69 would dial the phone number of whomever last called you.

https://www.whichvoip.com/articles/feature-codes.htm

That lists some other feature codes. You could play with the feature
codes to see which work with whomever is your telco.

I don't know who is your telco or cellular provider to see if I could
find a list of their feature codes. They may have a list available
online, at their website, or you call them for help.

If you have an online account with your telco,

As far as I can tell that is not something my telco offers.

If you do not have an online account with your telco, I don't see how
you can access user-configurable options on your account, like disabling Caller-ID on outbound calls by default.

You're paying them, so they should have phone support. While you can
find some feature codes listed online, their tech support should know
which ones they use.

--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

VanguardLH,

When Caller-ID is disabled (for your outbound calls), you are seen
as Anonymous. If a recipient blocks Anonymous callers, you won't
get through.

Ding, ding, ding, ding! You win a prize!

So, why call them anonymously in the first place knowing there's a good chance they will block you,

Kiddo, in the sentence just below what you quoted there I mentioned that I wanted to be able to provide caller-id to people /of my choice/.

So yes, I'm rather aware that some people will block anonymous callers. Interesting enough though, I do not know of any company which will do so.

They list:

*67 + 10-digit phone number Block Caller ID for a single call

I already mentioned that my country uses #31# for that. Do you really think that your countries codes will be in any way usefull to me ?

If you do not have an online account with your telco, I don't see how
you can access user-configurable options on your account,

Well duh! If you do not have {something} you cannot use {something}. And water is wet. <whistle>

like disabling Caller-ID on outbound calls by default.

I think you missed that I already did that, courtesy of my phone / android.
No telco assist needed.

When are you going to try to answer my question ?

Regards,
Rudy Wieser



--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

"R.Wieser" <address@is.invalid> wrote:

VanguardLH,

*67 + 10-digit phone number Block Caller ID for a single call
*82 + 10-digit phone number Unblock Caller ID for a single call

I already mentioned that my country uses #31# for that. Do you really think that your countries codes will be in any way usefull to me ?

Unidentified telco or cellular provider.
Unidentified country.

Oh, this information is supposed to somehow get divined by your
respondents?

I showed what I found for one provider. In keeping everything secret,
now it's your turn to investigate, or just call them to get the codes.

When are you going to try to answer my question ?

No more responses from me until you choose to stop secreting the
requisite information as to WHO and WHERE you are a customer of.
EVERYONE else will also be making stabs at solutions doling out similar information for whomever they use and wherever that is.

Keep the info a secret, and you really expected specific solutions to
the unknown? The country where your provider is far less important than
the actual provider you use.

Since you want to keep secret who that is, good luck when calling THEM
on if they support what you want.

Bye.

--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

Vanguard,

I already mentioned that my country uses #31# for that. Do you
really think that your countries codes will be in any way usefull
to me ?

Unidentified telco or cellular provider.

Not relevant in my nick of the woods. Our telcos' don't get to choose their own user-centric phone codes.

Unidentified country.

Not relevant. I've provided you with the format my country uses, and an eventually existing "temporarily re-enable caller-id" code will be in that same format.

Oh, this information is supposed to somehow get divined
by your respondents?

:-) For some reason you are rather good at ignoring information that has already been provided. Why is that ?

I showed what I found for one provider. In keeping everything
secret,

:-) See the above. None of what you asked for is relevant to my question. And no, not even my country.

If you think otherwise than show me some user-centric phone codes in the
same format as #31#, but with a different meaning for different countries.

now it's your turn to investigate, or just call them to get the codes.

Well, for me investigating myself *before* posting a question is pretty-much
a given. I did not find anything relevant.


And you missed a big part of my initial post (something I specifically named in a following post) : I mentioned that I disabled caller-id *using the configuration of the phone*. I have no idea if such phone codes can
override that setting.

... something you have not even considered.

No more responses from me

You say that as if its some kind of punishment. :-)


To say it again : you ask for information you don't actually need, while ignoring the information you already got. Thats not a good combination.

Regards,
Rudy Wieser



--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

On 2026-04-29 14:54, R.Wieser wrote:

Vanguard,

I already mentioned that my country uses #31# for that. Do you
really think that your countries codes will be in any way usefull
to me ?

Unidentified telco or cellular provider.

Not relevant in my nick of the woods. Our telcos' don't get to choose their own user-centric phone codes.

Huh, I don't believe so.

Vanguard is right.

--
Cheers, Carlos.
ES??, EU??;

--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

Carlos,

I already mentioned that my country uses #31# for that. Do you
really think that your countries codes will be in any way usefull
to me ?

Unidentified telco or cellular provider.

Not relevant in my nick of the woods. Our telcos' don't get to choose
their
own user-centric phone codes.

Huh, I don't believe so.

Which part of it ? Also, how are you supporting that belief ?

Regards,
Rudy Wieser



--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)