Haplogroup I2b (formerly known as I1C) is found primarily in northern Germany, the Benelux, northern France, the British Isles and Scandinavia. Many subclades have been identified recently, but few people have been tested so far.
Although most people who haven't taken a deep clade test yet are categorised as I2b*, it is doubtful that anybody is still merely I2b* nowadays. Almost everybody should belong at least to I2b1 or I2b2.
There is a way of guessing your subclade from the STR markers if you tested with a genetic genealogy company like FamilyTreeDNA.
First here is a summary of the defining mutations based on the latest ISOGG nomenclature
I2b (M436/P214/S33, P216/S30, P217/S23, P218/S32)
-I2b* -
--I2b1 (M223, P219/S24, P220/S119, P221/S120, P222/U250/S118, P223/S117)
---I2b1* -
---I2b1a (M284)
---I2b1b (M379)
---I2b1c (P78)
---I2b1d (P95)
Although most people who haven't taken a deep clade test yet are categorised as I2b*, it is doubtful that anybody is still merely I2b* nowadays. Almost everybody should belong at least to I2b1 or I2b2.
There is a way of guessing your subclade from the STR markers if you tested with a genetic genealogy company like FamilyTreeDNA.
First here is a summary of the defining mutations based on the latest ISOGG nomenclature
I2b (M436/P214/S33, P216/S30, P217/S23, P218/S32)
-I2b* -
--I2b1 (M223, P219/S24, P220/S119, P221/S120, P222/U250/S118, P223/S117)
---I2b1* -
---I2b1a (M284)
---I2b1b (M379)
---I2b1c (P78)
---I2b1d (P95)