National Library Board

Data as of 2026-08-23
GLEIF verified
LEI
5493003EXS1NBUK15Q12
Registered name
National Library Board
Jurisdiction
SG
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks8 · 2,048 IPv4 addresses
IPv6 1 prefix (largest 2001:df0:301::/48)
All fragments 127 blocks across 14 clusters
Cluster ID228180434
RegistryAPNIC
Owner jurisdictionSG
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 5493003EXS1NBUK15Q12
Shared handles clustered on 7 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

9 weekly snapshots · JSON
8 +1 netblocks since 2026-07-05
2026-07-05 peak 8 2026-08-23

IP Ranges (8)

⬇ export CSV
CIDR Org name Registry Status Confidence
203.78.8.0/21 National Library Board APNIC ASSIGNED PORTABLE ● high
203.78.9.0/24 National Library Board BGP ANNOUNCED ● high
203.78.11.0/24 National Library Board BGP ANNOUNCED ● high
203.78.12.0/24 National Library Board BGP ANNOUNCED ● high
203.78.13.0/24 National Library Board BGP ANNOUNCED ● high
203.78.14.0/24 National Library Board BGP ANNOUNCED ● high
203.78.15.0/24 National Library Board BGP ANNOUNCED ● high
2001:df0:301::/48 National Library Board BGP ANNOUNCED ● high

IPv6 ranges (1)

CIDR
2001:df0:301::/48

Network trust

what's this?
RPKI hygiene: F how networks compare →
12.5% of checked blocks have valid RPKI ROA coverage (1 of 8)
Possible discrepancies (1)

These blocks are registered to National Library Board but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

203.78.9.0/24 /24 authorized for AS14618 — Amazon.com, Inc.

NIC Handles

AN1055-AP APNIC-HM AS16509 AS18402 NMW1-AP NMW1-AP ORG-NLB1-AP