mxverify / rfc

Sites where “rfc” is a top search keyword

2 sites on record list “rfc” among the searches that send them the most visitors, by traffic estimates. It is searched about 673K times a month on Google, worldwide (Google Ads, Sept 2026), at about $0.09 a click in search ads: a month of its searches would cost about $60.6K as search ads. Each site checked on the backlink value checker adds its top five search keywords, so this list grows as sites are checked.

Keyword intelligence

673KGoogle monthly search volume−18% since Oct 2025

−12%Last 3 months vs 3 beforesteady

55/100Demand scoremoderate

34/100Keyword difficulty (US)possible

InformationalSearch intentwants to learn

$0.09Google Ads cost per clicktop-of-page bids $0.01–$0.06

203.8KThird-party estimated keyword demand−12% vs Aug 2026

2Sites getting visits from it1 in Aug 2026

What the data says

Demand is down on the year, now levelling off: Google searches for “rfc” fell 18% (823K to 673K) from Oct 2025 to Sept 2026; the last three months averaged 723K, 12% below the three before.
The 2 listed sites take about 1,420 visits a month from “rfc”, 1% of its 203.8K searches (traffic estimates). The other 99% goes to sites not on record here, or ends without a click.
rfc-editor.org takes 54% of the listed sites' visits from “rfc”: one site holds most of this keyword's traffic.
From Aug 2026 to Sept 2026: rfc-editor.org lost most (930 → 770); 1 site first got visits from it in Sept 2026.
At $0.09 a click (Google Ads), the listed sites' 1,420 visits a month from “rfc” would cost about $128 as search ads; rfc-editor.org's alone about $69. That is what the traffic would cost to buy, not what it earns.
The two sources differ about 3 times for Sept 2026: Google Ads counts 673K searches, the traffic estimates 203.8K. Read each for its trend, not as an exact count.

1Demand

Search demand, month by month

Google monthly search volume (Google Ads, worldwide)Third-party estimated keyword demand (right axis)

Every month's figures

	Oct 2025	Nov 2025	Dec 2025	Jan 2026	Feb 2026	Mar 2026	Apr 2026	May 2026	Jun 2026	Jul 2026	Aug 2026	Sept 2026
Google monthly search volume (Google Ads, worldwide)	823K	823K	673K	1M	823K	823K	823K	823K	823K	673K	823K	673K
Third-party estimated keyword demand (right axis)	—	—	—	—	—	—	—	—	—	—	230.3K	203.8K

Google monthly search volume: Google Ads, worldwide, read 1 Nov 2026. Third-party estimated keyword demand is a separate source, many times apart in size, so it has its own axis at the right: read the two lines for their trends.

2Who gets the traffic

Visits from it by site, month by month

rfc-editor.orgietf.org

Visits from this keyword (est.), stacked by site: a column is all the listed sites' visits from it that month.

Share of the visits, Sept 2026

Site	Share	Visits	As ads	DR	Linking sites
rfc-editor.org	54%	770	$69	91	45.1K
ietf.org	46%	650	$59	93	121.5K

Each site's latest estimate of its visits from this keyword; “As ads”: those visits at its cost per click, what they would cost to buy; DR: Ahrefs Domain Rating; linking sites: sites linking to it (third-party link index). The sites getting its visits range from DR 91 to 93.

Where these sites' visitors are

United States21%
Russia8%
China7%
India6%
Germany6%
Other countries52%

The listed sites' own visitors by country (all their traffic), weighted by each site's visits from this keyword: their audience, not where the keyword is searched.

Phones and computers

Phones56%
Computers and tablets44%

Page loads of the listed sites by Chrome users (Chrome UX Report), weighted by each site's visits from this keyword: a site's device mix, not the keyword's. No source gives a keyword's device split.

3Ranking competition

34/100Keyword difficulty (US)possible

34/100Ranking easehard

DR 99First page, median Ahrefs DR

219Linking sites per top-ten pageaverage, US

On Google's page:AI OverviewPeople also askVideosRelated searchesKnowledge panelImages

Google's first page, United States

#	Site	Page title	DR	BV
1	reddit.comon mxverify	How does the RFC work? : r/lacamiseta	95	$183
2	youtube.com	RFC Monitoring Tool	99	—
3	youtube.com	How to find my RFC? \| No appointments or trips to SAT offices ...	99	—
4	app.rfccorp.com	Login to RFC	14	—
5	youtube.com	How to register my RFC and what it entails? #Podcast #RFC	99	—
6	solvusoft.com	RFC File Extension: What Is It & How To Open It?	54	—
7	youtube.com	WHAT IS THE RFC?	99	—
8	youtube.com	How to read technical documents (RFCs, specs, manuals) with ...	99	—

Google's results for “rfc” in the United States, in English, read 1 Nov 2026. DR: Ahrefs Domain Rating; “—”: Ahrefs gives no rating. BV: what a new followed link from a site with a report on mxverify is worth (its report says what the figure rests on).

Keyword difficulty is 34 of 100 for US results: possible on the vendor's scale.
youtube.com holds 5 of Google's top 8 results for “rfc”: Google treats it as a search for that site.
None of the 2 sites listed here is in Google's US top 8 for “rfc”.
The first page's median Ahrefs DR is 99; the lowest-rated result, app.rfccorp.com at #4, has DR 14: a weak site already ranks on page one.
The top ten pages have about 219 linking sites each on average (US results, third-party link index).
Google shows an AI Overview for “rfc”, citing 8 sites, ietf.org, rfc-editor.org among them: it sits above the results and takes clicks from them.

4Intent and related searches

Informational: wants to learn
The searcher's goal, as a third-party keyword database classifies it (US).

Questions people ask

What is the definition of RFC?
What is the RFC for DHCP?
Where is my RFC?
What is the RFC in the Great Depression?

Keywords the same sites get visits from

opus 5.1 2 of these sites · 2 sites in all
web proxy 1 of these sites · 2 sites in all
ietf 1 of these sites · 1 site in all
olxc 1 of these sites · 1 site in all
rfc 6749 1 of these sites · 1 site in all
rfc 7807 1 of these sites · 1 site in all
rtp 1 of these sites · 1 site in all

Keywords the listed sites also get visits from, the most shared first: linked by the same sites' traffic, not by meaning.

5Opportunity

55/100 · Demand score, moderate

How much searching there is and what advertisers pay for it.

Searches	97	673K a month · weight 40%
Year	43	−18% since Oct 2025 · weight 20%
Momentum	38	last 3 months −12% on the 3 before · weight 20%
Commercial	2	$0.09 a click (Google Ads) · weight 20%

34/100 · Ranking ease, hard

How open Google's first page is: 100 minus its difficulty and strength.

Keyword difficulty	66	34 of 100 (US) · weight 50%
First-page strength	1	median Ahrefs DR 99 · weight 50%
One site's results	38	youtube.com holds 5 of 8; ease capped at 40 · weight 0%

What to do with it

Treat it as a brand search: Google answers “rfc” with the brand's own pages, so a third-party page competes for what is left.
Study rfc-editor.org: it takes 54% of the listed sites' visits from “rfc”; its report shows which of its traffic comes from search.
Google answers part of it in an AI Overview: the pages it cites get a link above the results.
The listed sites take 1% of its searches: most of the traffic goes to sites not on record here.

A business score needs your own figures (conversion, deal value) and is not made here. Scores are fixed formulas over the figures shown; they are not Google's.

6Sources

Google monthly search volume, Google Ads cost per click, bids and paid competition: Google Ads, worldwide, read 1 Nov 2026.
Third-party estimated keyword demand, cost per click and each site's visits (est.): third-party traffic estimates, Aug 2026 to Sept 2026.
Keyword difficulty, intent, SERP features, top-ten links: a third-party keyword database, United States, read 1 Nov 2026.
Google's first page, AI Overview, related searches: Google search, United States, read 1 Nov 2026.
DR: Ahrefs Domain Rating. Linking sites: a third-party link index.
Phones and computers: Chrome UX Report.

Tiles, findings, scores and actions are worked out from the figures on this page by fixed rules.

Site	Report	Visits (est.)	Month
ietf.org	Audited	650	Sept 2026
rfc-editor.org	Audited	770	Sept 2026

Listed A–Z. A top search keyword is one of the searches that bring a site the most visitors, by estimate. It is not a position in Google, and the order here is not a ranking. Visits (est.): the traffic estimate's own figure for the keyword on that site, which behaves like visits a month, not an amount of money (2026-09-29: it had been shown in dollars). Ad value is what advertisers pay for the keyword — its searches × cost per click — not how hard it is to rank for. This page is kept out of search results until 15 sites share the keyword.

Searches, cost per click and ad value above: Google Ads, worldwide. Sites and their visits: third-party traffic estimates, Sept 2026. The traffic estimates' own searches figure for the keyword is in the section below; the two sources often differ several times over.