+62 817, 818, 819, 859, 877 and 878 numbers: XL mobile lines

A number starting +62 817, 818, 819, 859, 877 or 878 is an Indonesian mobile number from XL, the brand formerly run by XL Axiata and since April 2025 by XLSMART. Indonesia has no mobile number portability, so the prefix still shows the operator, though not who the caller is or where they live.

Indonesia · Mobile numbers · Facts checked November 9, 2026

What these numbers look like

From abroad: +62 817 XXXX XXXX
Inside Indonesia: 0817-XXXX-XXXX

Drop the leading 0 after +62 when dialling from abroad. XL itself uses short codes such as 817 and 818 for its call centre, which are not the same as an 0817 mobile number.

Who uses XL (+62 817-819, 859, 877, 878) numbers?

Komdigi (formerly Kominfo) allocates mobile number blocks. The government portal Indonesia Baik lists 0817, 0818, 0819, 0859, 0877 and 0878 as XL Axiata prefixes, and 0831, 0832, 0833 and 0838 as AXIS, which is part of XL. On 16 April 2025 XL Axiata, Smartfren and Smart Telecom completed their merger; the surviving company is PT XLSMART Telecom Sejahtera Tbk, which keeps the XL, AXIS and Smartfren brands with their existing prefixes.

Prefix	Operator	Note
0817, 0818, 0819, 0859, 0877, 0878	XL (XLSMART)	Prepaid and XL Prioritas postpaid
0831, 0832, 0833, 0838	AXIS (XLSMART)	Separate pages exist for 0831 and 0838
0881, 0882, 0887, 0888, 0889 and others	Smartfren (XLSMART)	See the Smartfren page

Who is calling you from a XL (+62 817-819, 859, 877, 878) number?

Most contacts from these prefixes are XL subscribers: friends, family, online sellers, drivers. XL is one of Indonesia's three largest operators, so its numbers are common in both legitimate and unsolicited WhatsApp traffic. A first message from a stranger offering paid 'tasks', a prize, or asking you to open a file is the pattern to watch for.

Scams seen with XL (+62 817-819, 859, 877, 878) numbers

Part-time job task scams documented by OJK's Satgas PASTI: small payments for liking and subscribing to posts, then a group chat, then deposits for 'missions' that are never paid out.
WhatsApp APK files disguised as package photos, wedding invitations or election documents, documented by Komdigi. The apps read SMS one-time passwords and are used to drain bank accounts.

What to do about a call from XL (+62 817-819, 859, 877, 878)

Do not open .apk attachments, whatever they are called.
Report the number at aduannomor.id (Komdigi), attaching a screenshot or recording.
If money was lost, report to the Indonesia Anti-Scam Centre at iasc.ojk.go.id.
Check job or investment offers with OJK on 157.
Block and report the chat in WhatsApp.

Check the exact number

A series tells you what kind of line called. To check the full number you got, use these free tools:

Phone number validator: which country, mobile or landline, and whether the length is right.
Spam number checker: warning signs that a caller is a scammer.
Who called me? Reverse phone lookup: what the number tells you about the caller.
Indonesia country code +62: full dialing guide and number formats.
Calling Indonesia from abroad: per-minute rates if you need to call someone there.

Frequently asked questions

What network is +62 878?

XL. 0877 and 0878 are XL prefixes, now operated by XLSMART after the 2025 merger with Smartfren.

Is 0859 XL or AXIS?

XL. The government's Indonesia Baik list puts 0859 under XL Axiata. AXIS uses 0831, 0832, 0833 and 0838.

Did XL numbers change after the XLSMART merger?

No. XLSMART kept the XL, AXIS and Smartfren brands and their prefixes.

Can an 0818 number now be on Telkomsel?

No. Indonesia does not have mobile number portability, so an 0818 number is still an XL number.

Sources

Numbering facts on this page come from the regulator or operator sources below, checked November 9, 2026. We never publish individual personal phone numbers.

Indonesia Baik (government portal) - Kenalan Sama Kode Prefix Kartu Seluler di Indonesia (indonesiabaik.id)
Smartfren / XLSMART - Media note: shareholders approve XLSMART merger (legal day one 16 April 2025) (smartfren.com)
AXIS - FAQ XLSMART (axis.co.id)
XL - Memastikan SMS pengumuman pemenang undian XL valid (817/818 service numbers) (xl.co.id)
detikInet - Menkomdigi on mobile number portability petition (15 Sep 2026) (inet.detik.com)
OJK - Satgas PASTI Blokir 311 Pinjol Ilegal dan Pinpri (13 Feb 2024) (ojk.go.id)
Komdigi - [HOAKS] Pesan WhatsApp Pengiriman Paket Mengatasnamakan J&T Express (komdigi.go.id)
InfoPublik - Kominfo Buka AduanNomor.id (15 Nov 2023) (infopublik.id)