Indiana area codes
Indiana uses 8 area codes. The oldest is 317, in service since 1947; the newest is 463, from 2016. Across them 3,986 of 6,288 possible number blocks are allocated, 63.4% of capacity. 317 and 812 are at or past 95%, which is why new numbers there come from overlays rather than the original code. AT&T holds 31.0% of the 3,986 assigned blocks across the state, ahead of Frontier at 10.3%; a further 12.1% sits with CLEC and VoIP holders outside the national carriers. In the 33 days to 30 October 2026, FTC complaints named an Indiana caller ID 3,982 times – 1.7% of all complaints in the window, most often 317 with 853 (78th of 422 nationally). The state spans 2 time zones (Eastern and Central); 219, 574 and 812 cross a zone boundary alone. NANPA records 648 rate centers across the state's codes.
All 8 codes
| Code | In service | Blocks used | Largest holder | Complaints | Shares area with |
|---|---|---|---|---|---|
| 219 | 1948 | 495/786 | AT&T 30.3% | 495 | no overlay |
| 260 | 2002 | 444/786 | Frontier 22.3% | 529 | no overlay |
| 317 | 1947 | 786/786 | AT&T 50% | 853 | 463 |
| 463 | 2016 | 189/786 | Onvoy 27% | 205 | 317 |
| 574 | 2002 | 403/786 | AT&T 25.1% | 748 | no overlay |
| 765 | 1997 | 725/786 | AT&T 34.1% | 551 | no overlay |
| 812 | 1947 | 785/786 | AT&T 30.4% | 463 | 930 |
| 930 | 2015 | 159/786 | Other CLEC / VoIP 44% | 138 | 812 |
Block share is share of allocated number blocks, not of subscribers. Complaint counts cover 28 Sep – 30 Oct 2026 and reflect spoofed caller IDs as much as real calls.
How full Indiana’s codes are
A code holds at most 786 blocks of 10,000 numbers each. When a code fills up, the administrator does not reclaim numbers – it adds an overlay, and from then on new numbers in the same area come from the new code.
Full or nearly full
Who holds the number blocks
Counted from every assigned block in the state: 3,986 blocks, each with the holder NANPA recorded for it. Percentages are measured, not estimated.
| Holder | Blocks | Share of Indiana | Largest in |
|---|---|---|---|
| AT&T | 1,234 | 31% | 5 codes |
| Other CLEC / VoIP | 483 | 12.1% | 1 code |
| Frontier | 412 | 10.3% | 1 code |
| Verizon | 393 | 9.9% | – |
| T-Mobile | 361 | 9.1% | – |
| Lumen | 290 | 7.3% | – |
| Onvoy | 264 | 6.6% | 1 code |
| Brightspeed | 119 | 3% | – |
| Windstream | 103 | 2.6% | – |
| Bandwidth | 99 | 2.5% | – |
| Charter | 66 | 1.7% | – |
| Comcast | 50 | 1.3% | – |
“Other CLEC / VoIP” is not one company: it is every holder outside the national carriers counted together, which is what resellers and app-based numbers look like in the records. This is allocation, not subscribers.
Spam complaints naming Indiana codes
FTC Do Not Call complaints where the caller ID shown was a Indiana number, 28 Sep – 30 Oct 2026 (33 days). Caller IDs on spam calls are routinely faked, so these are complaints about the code, not calls proven to come from it.
How Indiana got its codes
3 in the 1940s, 1 in the 1990s, 2 in the 2000s, 2 in the 2010s. Each code after the first was split off from or overlaid on one already in service.
- 1947 317 goes into service.
- 1947 812 goes into service.
- 1948 219 goes into service.
- 1997 765 goes into service, split from or overlaid on 317.
- 2002 260 goes into service, split from or overlaid on 219.
- 2002 574 goes into service, split from or overlaid on 219.
- 2015 930 goes into service, split from or overlaid on 812.
- 2016 463 goes into service, split from or overlaid on 317.
Time zones
Indiana is in Eastern, Central time. 219, 574, 812 cover more than one zone within a single area code, so the code alone does not tell you what time it is there. This code spans 2 time zones.
Frequently asked about Indiana area codes
How many area codes does Indiana have?
8 in service. They are 219, 260, 317, 463, 574, 765, 812 and 930.
What is the oldest area code in Indiana?
317, in service since 1947. Every later code in the state was split off from or overlaid on an existing one.
What is the newest area code in Indiana?
463, from 2016, overlaying 317.
Is Indiana running out of numbers?
317 and 812 are at or past 95% of capacity, but NANPA has not opened relief planning for them, so no new code is announced.
What time zone is Indiana in?
It spans 2: Eastern and Central. 219, 574 and 812 cover more than one zone within a single area code, so the code alone does not tell you the time.
Which Indiana area code gets the most spam complaints?
317 – 853 FTC complaints in the 33 days to 30 October 2026, 78th of 422 codes nationally. Those are complaints about the caller ID shown, and spam callers routinely fake a local-looking number, so this says the code is imitated often, not that the calls come from there.
Which carrier holds the most Indiana numbers?
AT&T, with 31.0% of the 3,986 blocks assigned across Indiana, ahead of Other CLEC / VoIP at 12.1%. This is allocation of blocks by the numbering administrator, not a count of subscribers – people keep their numbers when they switch carriers.
Sources and verification
- NANPA – NPA Database (npa_report.csv), file date 11/01/2026, retrieved Nov 1, 2026
- NANPA – CO Code Assignment Records, All States (utilized), file updated 11/01/2026, retrieved Nov 1, 2026
- FTC – Do Not Call Reported Calls Data, 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
Figures on this page are counted from those files, not copied from other sites. Spotted an error? Request a correction. How we collect and check: methodology.