giffgaff (Virgin Media O2). 43430 is giffgaff's free automated line for credit and plans, and it answers text keywords too. We verified this against the operator's own published information on 13 August 2026; the sources are linked on this page.

I got a text from a short code I do not recognise – what should I do?

Do not tap any link in it and do not reply unless you are certain who the sender is. If it is marketing from a company you know, replying STOP to the short code shown in the message opts you out free. If it is unsolicited, forward it to 7726 free of charge and delete it - replying to an unknown sender only confirms your number is live.

43430 – Who Runs It, What It Costs & Is It Safe?

Q: Is 43430 free?

Free. giffgaff states 43430 is free to call from your giffgaff handset.

Q: Is 43430 a scam number?

No. Messages arriving from a short code are a different matter. Sender IDs on inbound texts are easy to fake, and a fraudulent message can even land in the same thread as genuine ones. Never act on a link or a request for codes, passwords or payment in an inbound text, however convincing the sender looks.

Short code: 43430
Type: Text and dial short code
Operated by: giffgaff (Virgin Media O2)
Cost: Free
Category: Mobile network self-service codes
Verified: 13 August 2026

What 43430 is for

Call 43430 to redeem a 16-digit voucher, buy a plan with your credit, or press option 2 to hear your balance and plan information. Plans queued through 43430 must be done before 9pm.

Texting keywords to 43430 gets an SMS back: NUMBER for your own number, MEMBERNAME or NAME, PASSWORD to reset, and PLAN for usage over the last 30 days.

For your credit balance specifically, giffgaff points you at texting INFO to 85075, or the app.

What it costs

Free. giffgaff states 43430 is free to call from your giffgaff handset.

Text or call 43430 — how it works

Dial 43430 free from your giffgaff phone.
Or text NUMBER, NAME, PASSWORD or PLAN to 43430.
Balance by text: send INFO to 85075.

Is 43430 safe, and is it spoofed?

Messages arriving from a short code are a different matter. Sender IDs on inbound texts are easy to fake, and a fraudulent message can even land in the same thread as genuine ones. Never act on a link or a request for codes, passwords or payment in an inbound text, however convincing the sender looks.

If a text or call is trying to rush you, threaten you, or get a password, one-time code or payment out of you, it is a scam whatever number it shows. Read our guide to the UK number ranges scammers use and how to spot a smishing text, and forward anything suspicious free to 7726.

Where this came from

We do not guess short codes. Every entry in this directory was checked against the organisation that runs the code, or against gov.uk or the regulator:

Checked against these sources on 13 August 2026. Short codes and their charges do change — if the operator’s page now says something different, believe the operator.

Checking an ordinary number instead

Short codes are not in Ofcom’s numbering data — only full UK numbers are. If it is a normal 01, 02, 03, 07, 08 or 09 number you want to identify, put it into the phone number checker and you will get its type, its area and the provider Ofcom allocated the range to.

Other UK short codes

150 · EE customer service and account texts 202 · O2 pay monthly customer service 4445 · O2 pay as you go customer service 4444 · O2 top-up service 21202 · O2 Charge to Mobile balance 2202 · O2 line for buying data and Bolt Ons

All verified UK short codes › · UK area codes › · UK network operators ›

43430 — giffgaff top-up line and account texts