nImlacs
were mentioned in many early RFCs (1971 to 1984):
n86, 101, 126, 164,
174, 177, 190,
191,
249, 282, 314,
321,
372, 373, 398,
472,
549, 553, 559, 900
nIn use at:
nBBN,
Case,
MIT, Mitre,
NASA/Ames,
SRI-ARC/NIC,
Stanford AI,
UCLA, UCSB,
Univ. of Illinois,
and elsewhere