MAC address D4:BA:BA:8 details

Assigned Prefix
D4:BA:BA:8

28-bit Prefix (MA-M)

Block Base Allocation
D4:BA:BA:80:00:00

Hardware Interface 0x00000 (Min)

Block Top Boundary
D4:BA:BA:8F:FF:FF

Hardware Interface 0xFFFFF (Max)

Network Addressing & Host Scope

MA-M

This assignment represents an IEEE MA-M allocation, granting a dedicated boundary of 1,048,576 unique host MAC addresses.

START: D4:BA:BA:80:00:00 1,048,576 Total Addresses END: D4:BA:BA:8F:FF:FF
Lower Bound (Base Host 0) Upper Bound (Top Boundary)
IEEE Registry Tier MA-M Universally Administered (UAA)
Total Host Capacity 1,048,576 Exact binary space: 220 addresses
Derived IPv6 Link-Local SLAAC Base RFC 4291 EUI-64
fe80::d6ba:baff:fe80:0000

Base address derived from the allocation start, not a network prefix or a verified configured address. The link-local subnet is fe80::/64.

RFC 4291 (Modified EUI-64): This example derives an interface identifier from a 48-bit MAC address by inserting ff:fe and inverting the universal/local bit. An interface can use a different IPv6 identifier.

Octet & Bit Architecture

28-Bit Architecture
Allocation Spread 28-BIT PREFIX (58%) + 20-BIT HOST (42%)
28-Bit Prefix
20-Bit Host
Bit 0 [D4:BA:BA:8]
Bit 28
Bit 47 [Host Top]

OUI / Prefix OUI means Organizationally Unique Identifier. MA-L uses a 24-bit prefix; MA-M and MA-S use 28-bit and 36-bit prefixes.

Host bits The remaining bits define the address space within the allocation.

Binary Octet Breakdown (Prefix)

Colored bits in Octet 0 (the first byte) match the I/G and U/L cards below. Octet indices start at zero.

Octet 0 D4 1101 01 0 0
Octet 1 BA 1011 1010
Octet 2 BA 1011 1010
Octet 3 (high nibble) 8_ 1000 [Host]
First octet, bit 1 (U/L) b1 = 0
Universally Administered (UAA)

Globally unique IEEE governed address.

First octet, bit 0 (I/G) b0 = 0
Unicast Transmission

Individual address destination (point-to-point transmission).

Wireshark Dissector Intel
Display Filter: eth.addr[0:3] == d4:ba:ba && (eth.addr[3] & 0xf0) == 0x80
No custom Wireshark manufacturer alias overrides registered for this prefix.

REST API v2

200 OK
CLI curl -s https://api.maclookup.app/v2/macs/d4baba8 -H 'Accept: application/json'
{
  "success": true,
  "found": true,
  "macPrefix": "D4BABA8",
  "company": "Chengdu Ba SAN SI YI Information Technology Co., LTD",
  "address": "(Xihanggang Science and Technology Enterprise Incubation Center), No. 2, Section 4, Xihanggang Avenue, Industrial Concentration Area, Southwest Airport Economic Development Zone, Shuangliu District, Chengdu City, China (Sichuan) Pilot Free Trade Zone, Chengdu  250100, CN",
  "country": "CN",
  "blockStart": "D4BABA800000",
  "blockEnd": "D4BABA8FFFFF",
  "blockSize": 1048575,
  "blockType": "MA-M",
  "updated": "2022-07-20",
  "isRand": false,
  "isPrivate": false
}