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There are multiple identifiers or “SIM numbers” that can be used to identify the SIMs you receive from Hologram. You will need to reference these IDs when activating SIMs for the first time, and you can search your dashboard by any ID you have access to. You can activate SIMs in your dashboard using any available ICCID or EID for your SIMs.
SIM card showing identifiers

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What are the IDs on a SIM card?

Every SIM ships with at least one ICCID, which is the ID of a profile installed on the SIM that gives you access to a cellular carrier network through Hologram. Our Hyper SIMs are Multi-Core and ship with one or more preinstalled profiles. Each SIM also has an EID, the unique global identifier of the eUICC SIM.

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Activating SIMs using an ICCID

The ICCIDs of profiles preinstalled on a Hologram SIM are printed on the triple cut card. One of these ICCIDs is printed with the barcode and directly on the Nano (4FF) SIM card. You can activate and search for SIMs by any installed profile ICCIDs.
SIM card showing ICCID printed on the 1FF format
If you purchased a box of SIMs from Hologram, the range of SIM ICCIDs included in the box are listed as ICCID Start to ICCID End.
Box label showing ICCID range

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Activating SIMs using an EID (eUICC ID)

Each eUICC-enabled Hyper SIM also has an EID, the unique global eUICC ID given to a SIM when it is manufactured. You can activate and search for SIMs by EID.
SIM card showing EID printed on the 1FF format
 

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What is the “primary” ICCID or SIM number on a SIM card?

At any given time, only one profile on a SIM card can be enabled, active, and able to use data. This is the enabled profile ICCID. You may also see this referred to as the “active profile”.
Note: ICCIDs are part of the profile on your SIM. If a profile is ever changed or removed, the ICCIDs on your SIM will also change. Multi-Core Hyper SIMs with network fallback change active profiles when switching to a backup profile, changing the active profile ICCID for your SIM.
Profile information in Dashboard
Manufactured profile ICCIDs are ICCIDs of profiles installed on the SIM during manufacturing. The enabled manufactured ICCID is printed on triple-cut SIM cards on the smallest size (4FF) and on embedded SIMs (MFF2).  

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Find ICCIDs and EIDs in a SIM page

Identifiers for SIM cards are easier to find in a SIM’s details page.
  1. From the SIMs page, open a SIM.
  2. The EID is found on the SIM details tab, in the Identifying information card.
    EID (eUICC ID) in SIM and device tab
  3. ICCIDs for currently installed profiles are found in the Profiles tab and in the header of the page.
    ICCIDs in Profiles tab
  4. ICCIDs for profiles assigned to the SIM over time, including profiles that were later removed, are listed in the Profile history card at the bottom of the Profiles tab. Each row shows which profile the event affected and summarizes the ICCIDs involved in Summary. Filter the Activity to Profile assigned to see only installations and removals, or open a profile’s details to see history for that profile only. Profile installation history also appears in the SIM History tab.
  5. Manufactured profile ICCIDs are found in the Manufactured profile ICCID column of the SIMs pages. On the SIM’s details page, manufactured profiles are marked (manufactured) in the Profiles card on the Profiles tab, and manufactured profiles that are no longer installed are listed below it.

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When do ICCIDs on a SIM card change?

An ICCID is the ID of a profile installed on a SIM card. When a profile changes on that SIM card, whether through an over-the-air (OTA) update, profile swap, or with Outage Protection via a network fallback event, those ICCIDs may change. The EID on a SIM will never change.

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What other IDs can be used to track a SIM card?

Each SIM is also installed in your physical device, which we represent using the Device ID, or deviceId. This is the main ID used in the API. We give each SIM it’s own SIM ID, hologramSimId, the primary identifier we use to track Hologram SIM cards. This is a unique ID per SIM card like an EID, but is shorter to make it easier to work with file exports and reports.