diff --git a/api/src/lib.rs b/api/src/lib.rs
index 5f1b5ca..cff8b31 100644
--- a/api/src/lib.rs
+++ b/api/src/lib.rs
@@ -464,6 +464,8 @@ pub struct AccountView {
     // Personal greet shown by a bot when this account joins a greet-enabled
     // channel (empty = none).
     pub greet: String,
+    // Unix time this account was last active (coalesced); never below `ts`.
+    pub last_seen: u64,
 }
 
 // One channel access-list entry (account -> level). `level` is either a legacy
diff --git a/modules/nickserv/src/info.rs b/modules/nickserv/src/info.rs
index 63af721..c5594d5 100644
--- a/modules/nickserv/src/info.rs
+++ b/modules/nickserv/src/info.rs
@@ -1,10 +1,10 @@
-use echo_api::{human_time, Priv, Store};
+use echo_api::{human_time, NetView, Priv, Store};
 use echo_api::{Sender, ServiceCtx};
 
 // INFO [account]: show an account's registration details. The email and other
 // private fields are shown to the account's own owner, or to an oper with the
 // auspex privilege.
-pub fn handle(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, db: &dyn Store) {
+pub fn handle(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, net: &dyn NetView, db: &dyn Store) {
     let name = args.get(1).copied().unwrap_or(from.nick);
     let Some(acct) = db.account(name) else {
         ctx.notice(me, from.uid, format!("\x02{name}\x02 isn't registered."));
@@ -12,6 +12,13 @@ pub fn handle(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, db:
     };
     ctx.notice(me, from.uid, format!("Information for \x02{}\x02:", acct.name));
     ctx.notice(me, from.uid, format!("  Registered : {}", human_time(acct.ts)));
+    // Last-seen is public (Anope shows it by default); a live session reads as online.
+    let last_seen = if net.uids_logged_into(&acct.name).is_empty() {
+        human_time(acct.last_seen)
+    } else {
+        "now (online)".to_string()
+    };
+    ctx.notice(me, from.uid, format!("  Last seen  : {last_seen}"));
     // A greet is public — the bot shows it in-channel to everyone anyway.
     if !acct.greet.is_empty() {
         ctx.notice(me, from.uid, format!("  Greet      : {}", acct.greet));
diff --git a/modules/nickserv/src/lib.rs b/modules/nickserv/src/lib.rs
index 33b0c70..ac44780 100644
--- a/modules/nickserv/src/lib.rs
+++ b/modules/nickserv/src/lib.rs
@@ -114,7 +114,7 @@ impl Service for NickServ {
             Some("IDENTIFY") | Some("ID") => identify::handle(me, from, args, ctx, db),
             Some("LOGOUT") | Some("LOGOFF") => logout::handle(me, &self.guest_nick, &mut self.guest_seq, from, ctx),
             Some("CERT") => cert::handle(me, from, args, ctx, db),
-            Some("INFO") => info::handle(me, from, args, ctx, db),
+            Some("INFO") => info::handle(me, from, args, ctx, net, db),
             Some("ALIST") => alist::handle(me, from, ctx, db),
             Some("SET") => set::handle(me, from, args, ctx, db),
             Some("SASET") => saset::handle(me, from, args, ctx, db),
diff --git a/src/engine/db/store.rs b/src/engine/db/store.rs
index 03621ea..f46da07 100644
--- a/src/engine/db/store.rs
+++ b/src/engine/db/store.rs
@@ -11,6 +11,7 @@ impl Store for Db {
             ts: a.ts,
             verified: a.verified,
             greet: a.greet.clone(),
+            last_seen: a.last_seen,
         })
     }
     fn resolve_account(&self, name: &str) -> Option<&str> {
@@ -19,7 +20,7 @@ impl Store for Db {
     fn accounts_matching(&self, pattern: &str) -> Vec<AccountView> {
         self.accounts()
             .filter(|a| super::glob_match(pattern, &a.name))
-            .map(|a| AccountView { name: a.name.clone(), email: a.email.clone(), ts: a.ts, verified: a.verified, greet: a.greet.clone() })
+            .map(|a| AccountView { name: a.name.clone(), email: a.email.clone(), ts: a.ts, verified: a.verified, greet: a.greet.clone(), last_seen: a.last_seen })
             .collect()
     }
     fn accounts_by_email(&self, pattern: &str) -> Vec<String> {
diff --git a/src/engine/tests.rs b/src/engine/tests.rs
index 49d86fb..9c418cd 100644
--- a/src/engine/tests.rs
+++ b/src/engine/tests.rs
@@ -446,6 +446,7 @@
         let mut db = Db::open(&path, "test");
         db.scram_iterations = 4096;
         db.register("alice", "sesame", None).unwrap();
+        db.register("bob", "hunter2", None).unwrap();
         db.register_channel("#a", "alice").unwrap();
         let ns = NickServ { uid: "42SAAAAAA".into(), guest_nick: "Guest".into(), guest_seq: 0 };
         let cs = ChanServ { uid: "42SAAAAAB".into() };
@@ -461,6 +462,13 @@
         assert!(notice(&info, "Information for \x02alice\x02"));
         assert!(notice(&info, "Registered"));
         assert!(notice(&info, "Email"), "owner sees their email line: {info:?}");
+        // alice is identified, so her INFO reports her as online.
+        assert!(notice(&info, "Last seen"), "INFO has a last-seen line: {info:?}");
+        assert!(notice(&info, "online"), "an identified account reads as online: {info:?}");
+        // bob is registered but not connected: last-seen shows a time, not online.
+        let binfo = to_ns(&mut e, "INFO bob");
+        assert!(notice(&binfo, "Last seen"), "offline account still shows last-seen: {binfo:?}");
+        assert!(!notice(&binfo, "online"), "an offline account is not reported online: {binfo:?}");
         assert!(notice(&to_ns(&mut e, "INFO ghost"), "isn't registered"));
         assert!(notice(&to_ns(&mut e, "ALIST"), "#a"));
     }