I don't think you need to take service for that. It's pretty simple to list sites on crypto-oriented sites. And it should manage by the team themselves as well. You will get a lot of such site lists from Google. Here is the list of a couple of popular crypto listing sites,
CoinSniper
WatcherGuru
CNToken
Blockfolio
Zapper
Delta
Zerion
GemFinder
CoinHunt
CoinMooner
CoinHunters
CoinVote
CoinScope
CoinDiscovery
FreshCoins
RugFreeCoins
CoinsBet
CoinAlpha
CoinsGods
GemHunters
CoinTopList
100xCoinHunt
DEFIYield
NextCoin
CoinFind
CoinFair
CoinListing
PolyHunter
TokenGems
RivalFinance
MemeCoins