Today we’re sharing an internal domain authority metric designed to balance popularity and centrality of a domain on the internet. For those of you who want to check your domain(s) feel free to jump straight into the public web interface:
The Dejan Authority Metric (DAM) is a product of Harmonic Centrality (HC) and PageRank (PR) and balances the strengths of each in evaluating the influence and importance of web pages within a network. By integrating the proximity insights of HC, which highlights the closeness of a node to all others, with the influence propagation characteristics of PR, DAM provides a more comprehensive assessment of a page’s authority. This balanced approach ensures that pages are not only important due to their structural position in the network but also accessible in terms of their relational distance to other nodes. Dejan Authority Metric allows for more accurate identification of key pages that are not only well-linked (as emphasized by PR) but also centrally positioned (as captured by HC).
The DAM database contains roughly 300,000,000 unique common crawl hosts, but most are concentrated at around 35-45 DAM. We can call this your “average web”. Anything below 30 is of really low impact and influence as far as the web topology is concerned. In fact the scale really starts at DAM 20 as the rest has been filtered out to save compute resources and storage space.
The public authority metrics are log scaled for simplicity but they in range from 0 to 1,000,000 in raw metrics.
In practical terms, that means that the difference between 30 and 40 isn’t as great as 40 and 50 and to get from authority 99 to 100 would be more difficult than getting from 0 to 50.
This also means that 31 is a little bit stronger than 30 while 81 is a fair bit stronger than 80. So higher up in the metric you go, more important are the granular values.
Example:
YouTube: 99.807016
Instagram: 99.737763
linkedIn: 99.330713
Since they all sit in the god-tier of the web, we’re not paying closer attention to the values following 99 to get an impression of relative strength to each other (80, 73 and 33).
Tier 21: 3
Tier 22: 12
Tier 23: 11
Tier 24: 19
Tier 25: 24
Tier 26: 24
Tier 27: 76
Tier 28: 288
Tier 29: 2516
Tier 30: 6956
Tier 31: 11900
Tier 32: 43068
Tier 33: 148080
Tier 34: 873224
Tier 35: 2924590
Tier 36: 9623449
Tier 37: 32869993
Tier 38: 37503903
Tier 39: 96494526
Tier 40: 55986710
Tier 41: 19063098
Tier 42: 7998220
Tier 43: 4675896
Tier 44: 2993311
Tier 45: 2315323
Tier 46: 1592707
Tier 47: 1184026
Tier 48: 963294
Tier 49: 719262
Tier 50: 525214
Tier 51: 410338
Tier 52: 407683
Tier 53: 341611
Tier 54: 235394
Tier 55: 181109
Tier 56: 159375
Tier 57: 142519
Tier 58: 112306
Tier 59: 103621
Tier 60: 75849
Tier 61: 69245
Tier 62: 64469
Tier 63: 43849
Tier 64: 39353
Tier 65: 36835
Tier 66: 26254
Tier 67: 20617
Tier 68: 17506
Tier 69: 16433
Tier 70: 13186
Tier 71: 10633
Tier 72: 9592
Tier 73: 6972
Tier 74: 6321
Tier 75: 5623
Tier 76: 4227
Tier 77: 3459
Tier 78: 6945
Tier 79: 3621
Tier 80: 2755
Tier 81: 1638
Tier 82: 1200
Tier 83: 902
Tier 84: 720
Tier 85: 586
Tier 86: 472
Tier 87: 334
Tier 88: 315
Tier 89: 188
Tier 90: 170
Tier 91: 125
Tier 92: 142
Tier 93: 87
Tier 94: 50
Tier 95: 40
Tier 96: 34
Tier 97: 19
Tier 98: 23
Tier 99: 15
Dan Petrovic, the managing director of DEJAN, is Australia’s best-known name in the field of search engine optimisation. Dan is a web author, innovator and a highly regarded search industry event speaker.
ORCID iD: https://orcid.org/0000-0002-6886-3211
