Country stats for last year of data

For these country-level stats, the most recent test from each client address is examined within aggregated IP blocks (/24 for IPv4 and /40 for IPv6). If the most recent test in an IP block shows spoofing, the IP block is considered to allow spoofing. If ALL clients indicate blocking, the IP block is considered to block spoofing. (It is considered NAT blocking if there are no non-NAT tests found.) If some clients showed spoofing but the most recent tests show blocking (and there's no evidence of a change in blocking policy), then the IP block is considered "inconsistent". On the map, inconsistent results are counted as spoofing for simplicity.

Country	Client IP blocks	Spoofing IP blocks	Blocking IP blocks		Inconsistent IP blocks	Client ASNs	Spoofing ASNs
			Non-NAT	NAT
bra (Brazil)	2442	404 (16.5%)	508 (20.8%)	1491 (61.1%)	39 (1.6%)	565	243 (43.0%)
ind (India)	602	275 (45.7%)	67 (11.1%)	257 (42.7%)	3 (0.5%)	49	18 (36.7%)
usa (United States)	2013	162 (8.0%)	565 (28.1%)	1283 (63.7%)	3 (0.1%)	339	65 (19.2%)
chl (Chile)	343	58 (16.9%)	15 (4.4%)	270 (78.7%)	0 (0.0%)	25	7 (28.0%)
arg (Argentina)	152	34 (22.4%)	13 (8.6%)	104 (68.4%)	1 (0.7%)	26	6 (23.1%)
zaf (South Africa)	178	29 (16.3%)	10 (5.6%)	138 (77.5%)	1 (0.6%)	40	14 (35.0%)
egy (Egypt)	123	28 (22.8%)	0 (0.0%)	95 (77.2%)	0 (0.0%)	6	2 (33.3%)
col (Colombia)	97	27 (27.8%)	5 (5.2%)	65 (67.0%)	0 (0.0%)	19	12 (63.2%)
ita (Italy)	321	27 (8.4%)	20 (6.2%)	273 (85.0%)	1 (0.3%)	49	10 (20.4%)
grc (Greece)	99	26 (26.3%)	10 (10.1%)	63 (63.6%)	0 (0.0%)	6	1 (16.7%)
nld (Netherlands)	365	26 (7.1%)	80 (21.9%)	258 (70.7%)	1 (0.3%)	72	18 (25.0%)
tur (Turkey)	540	26 (4.8%)	64 (11.9%)	450 (83.3%)	0 (0.0%)	80	17 (21.3%)
gbr (United Kingdom)	336	25 (7.4%)	59 (17.6%)	252 (75.0%)	0 (0.0%)	69	16 (23.2%)
idn (Indonesia)	48	22 (45.8%)	13 (27.1%)	13 (27.1%)	0 (0.0%)	24	11 (45.8%)
chn (China)	381	20 (5.2%)	93 (24.4%)	268 (70.3%)	0 (0.0%)	28	10 (35.7%)
npl (Nepal)	51	18 (35.3%)	10 (19.6%)	23 (45.1%)	0 (0.0%)	9	5 (55.6%)
mdv (Maldives)	22	17 (77.3%)	1 (4.5%)	4 (18.2%)	0 (0.0%)	4	3 (75.0%)
pry (Paraguay)	42	16 (38.1%)	10 (23.8%)	16 (38.1%)	0 (0.0%)	13	9 (69.2%)
rus (Russian Federation)	106	16 (15.1%)	16 (15.1%)	74 (69.8%)	0 (0.0%)	37	11 (29.7%)
tha (Thailand)	120	16 (13.3%)	6 (5.0%)	98 (81.7%)	0 (0.0%)	18	9 (50.0%)
ken (Kenya)	103	15 (14.6%)	6 (5.8%)	80 (77.7%)	2 (1.9%)	17	7 (41.2%)
isr (Israel)	140	14 (10.0%)	21 (15.0%)	105 (75.0%)	0 (0.0%)	9	1 (11.1%)
ven (Venezuela)	83	13 (15.7%)	8 (9.6%)	62 (74.7%)	0 (0.0%)	12	2 (16.7%)
can (Canada)	180	12 (6.7%)	27 (15.0%)	141 (78.3%)	0 (0.0%)	37	7 (18.9%)
twn (Taiwan)	105	12 (11.4%)	3 (2.9%)	90 (85.7%)	0 (0.0%)	8	2 (25.0%)
ukr (Ukraine)	44	12 (27.3%)	8 (18.2%)	24 (54.5%)	0 (0.0%)	23	7 (30.4%)
phl (Philippines)	124	11 (8.9%)	16 (12.9%)	97 (78.2%)	0 (0.0%)	18	6 (33.3%)
dnk (Denmark)	28	10 (35.7%)	5 (17.9%)	13 (46.4%)	0 (0.0%)	11	3 (27.3%)
rou (Romania)	100	10 (10.0%)	37 (37.0%)	53 (53.0%)	0 (0.0%)	15	1 (6.7%)
jpn (Japan)	240	9 (3.8%)	45 (18.8%)	186 (77.5%)	0 (0.0%)	40	6 (15.0%)
sau (Saudi Arabia)	345	9 (2.6%)	26 (7.5%)	310 (89.9%)	0 (0.0%)	8	2 (25.0%)
tza (Tanzania)	23	9 (39.1%)	1 (4.3%)	13 (56.5%)	0 (0.0%)	11	7 (63.6%)
aus (Australia)	143	8 (5.6%)	25 (17.5%)	110 (76.9%)	0 (0.0%)	35	7 (20.0%)
mex (Mexico)	189	8 (4.2%)	23 (12.2%)	158 (83.6%)	0 (0.0%)	23	6 (26.1%)
hkg (Hong Kong)	28	7 (25.0%)	11 (39.3%)	10 (35.7%)	0 (0.0%)	19	7 (36.8%)
tun (Tunisia)	7	7 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	2	2 (100.0%)
vnm (Vietnam)	81	7 (8.6%)	9 (11.1%)	65 (80.2%)	0 (0.0%)	12	5 (41.7%)
pan (Panama)	72	6 (8.3%)	4 (5.6%)	62 (86.1%)	0 (0.0%)	8	5 (62.5%)
bgd (Bangladesh)	17	5 (29.4%)	0 (0.0%)	12 (70.6%)	0 (0.0%)	10	4 (40.0%)
ecu (Ecuador)	24	5 (20.8%)	2 (8.3%)	17 (70.8%)	0 (0.0%)	10	2 (20.0%)
ury (Uruguay)	85	5 (5.9%)	9 (10.6%)	71 (83.5%)	0 (0.0%)	5	2 (40.0%)
bol (Bolivia)	48	4 (8.3%)	5 (10.4%)	39 (81.3%)	0 (0.0%)	4	2 (50.0%)
btn (Bhutan)	8	4 (50.0%)	1 (12.5%)	3 (37.5%)	0 (0.0%)	1	1 (100.0%)
deu (Germany)	511	4 (0.8%)	87 (17.0%)	420 (82.2%)	0 (0.0%)	72	4 (5.6%)
dza (Algeria)	11	4 (36.4%)	0 (0.0%)	7 (63.6%)	0 (0.0%)	2	1 (50.0%)
esp (Spain)	120	4 (3.3%)	9 (7.5%)	107 (89.2%)	0 (0.0%)	18	3 (16.7%)
fra (France)	168	4 (2.4%)	51 (30.4%)	113 (67.3%)	0 (0.0%)	29	4 (13.8%)
irn (Iran)	251	4 (1.6%)	9 (3.6%)	238 (94.8%)	0 (0.0%)	18	3 (16.7%)
pol (Poland)	199	4 (2.0%)	13 (6.5%)	182 (91.5%)	0 (0.0%)	39	3 (7.7%)
swe (Sweden)	70	4 (5.7%)	17 (24.3%)	49 (70.0%)	0 (0.0%)	23	4 (17.4%)
are (United Arab Emirates)	33	3 (9.1%)	5 (15.2%)	24 (72.7%)	1 (3.0%)	6	2 (33.3%)
bgr (Bulgaria)	37	3 (8.1%)	4 (10.8%)	30 (81.1%)	0 (0.0%)	18	3 (16.7%)
mda (Moldova, Republic of)	28	3 (10.7%)	6 (21.4%)	18 (64.3%)	1 (3.6%)	8	3 (37.5%)
mus (Mauritius)	8	3 (37.5%)	0 (0.0%)	5 (62.5%)	0 (0.0%)	6	2 (33.3%)
bhr (Bahrain)	61	2 (3.3%)	4 (6.6%)	55 (90.2%)	0 (0.0%)	4	2 (50.0%)
cri (Costa Rica)	16	2 (12.5%)	1 (6.3%)	13 (81.3%)	0 (0.0%)	9	2 (22.2%)
gum (Guam [US])	15	2 (13.3%)	7 (46.7%)	6 (40.0%)	0 (0.0%)	5	1 (20.0%)
lux (Luxembourg)	10	2 (20.0%)	6 (60.0%)	2 (20.0%)	0 (0.0%)	6	2 (33.3%)
prt (Portugal)	48	2 (4.2%)	14 (29.2%)	32 (66.7%)	0 (0.0%)	8	2 (25.0%)
srb (Serbia)	60	2 (3.3%)	3 (5.0%)	55 (91.7%)	0 (0.0%)	11	2 (18.2%)
sur (Suriname)	2	2 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
ton (Tonga)	5	2 (40.0%)	1 (20.0%)	2 (40.0%)	0 (0.0%)	3	1 (33.3%)
uga (Uganda)	13	2 (15.4%)	0 (0.0%)	11 (84.6%)	0 (0.0%)	3	2 (66.7%)
ago (Angola)	159	1 (0.6%)	3 (1.9%)	155 (97.5%)	0 (0.0%)	6	1 (16.7%)
atg (Antigua and Barbuda)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	1	1 (100.0%)
bhs (Bahamas)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
che (Switzerland)	46	1 (2.2%)	18 (39.1%)	27 (58.7%)	0 (0.0%)	20	1 (5.0%)
cmr (Cameroon)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	3	1 (33.3%)
cze (Czech Republic)	31	1 (3.2%)	1 (3.2%)	29 (93.5%)	0 (0.0%)	10	1 (10.0%)
dji (Djibouti)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
est (Estonia)	3	1 (33.3%)	2 (66.7%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
eth (Ethiopia)	19	1 (5.3%)	0 (0.0%)	18 (94.7%)	0 (0.0%)	1	1 (100.0%)
gin (Guinea)	4	1 (25.0%)	0 (0.0%)	3 (75.0%)	0 (0.0%)	2	1 (50.0%)
isl (Iceland)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
kna (Saint Kitts and Nevis)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
kwt (Kuwait)	3	1 (33.3%)	2 (66.7%)	0 (0.0%)	0 (0.0%)	2	1 (50.0%)
mkd (Macedonia)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
mwi (Malawi)	21	1 (4.8%)	6 (28.6%)	14 (66.7%)	0 (0.0%)	3	1 (33.3%)
pak (Pakistan)	63	1 (1.6%)	3 (4.8%)	59 (93.7%)	0 (0.0%)	7	1 (14.3%)
per (Peru)	9	1 (11.1%)	1 (11.1%)	7 (77.8%)	0 (0.0%)	7	1 (14.3%)
png (Papua New Guinea)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
rwa (Rwanda)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	3	1 (33.3%)
sgp (Singapore)	33	1 (3.0%)	11 (33.3%)	21 (63.6%)	0 (0.0%)	17	1 (5.9%)
svk (Slovak Republic)	13	1 (7.7%)	1 (7.7%)	11 (84.6%)	0 (0.0%)	7	1 (14.3%)
syc (Seychelles)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
afg (Afghanistan, Islamic State of)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
alb (Albania)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
arm (Armenia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
aut (Austria)	75	0 (0.0%)	10 (13.3%)	65 (86.7%)	0 (0.0%)	15	0 (0.0%)
aze (Azerbaijan)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	3	0 (0.0%)
bel (Belgium)	23	0 (0.0%)	6 (26.1%)	17 (73.9%)	0 (0.0%)	6	0 (0.0%)
bih (Bosnia and Herzegovina)	2	0 (0.0%)	1 (50.0%)	1 (50.0%)	0 (0.0%)	2	0 (0.0%)
blr (Belarus)	20	0 (0.0%)	0 (0.0%)	20 (100.0%)	0 (0.0%)	4	0 (0.0%)
bmu (Bermuda)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
brb (Barbados)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
cod (Congo, The Democratic Republic of the)	2	0 (0.0%)	1 (50.0%)	1 (50.0%)	0 (0.0%)	1	0 (0.0%)
cyp (Cyprus)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
dma (Dominica)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	1	0 (0.0%)
dom (Dominican Republic)	14	0 (0.0%)	5 (35.7%)	9 (64.3%)	0 (0.0%)	2	0 (0.0%)
fin (Finland)	15	0 (0.0%)	12 (80.0%)	3 (20.0%)	0 (0.0%)	5	0 (0.0%)
fji (Fiji)	13	0 (0.0%)	6 (46.2%)	7 (53.8%)	0 (0.0%)	4	0 (0.0%)
geo (Georgia)	9	0 (0.0%)	1 (11.1%)	8 (88.9%)	0 (0.0%)	2	0 (0.0%)
gha (Ghana)	17	0 (0.0%)	0 (0.0%)	17 (100.0%)	0 (0.0%)	3	0 (0.0%)
hnd (Honduras)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
hrv (Croatia)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
hun (Hungary)	21	0 (0.0%)	9 (42.9%)	12 (57.1%)	0 (0.0%)	8	0 (0.0%)
imn (Isle of Man)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	2	0 (0.0%)
irl (Ireland)	67	0 (0.0%)	13 (19.4%)	54 (80.6%)	0 (0.0%)	13	0 (0.0%)
irq (Iraq)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	2	0 (0.0%)
jor (Jordan)	3	0 (0.0%)	1 (33.3%)	2 (66.7%)	0 (0.0%)	3	0 (0.0%)
kaz (Kazakhstan)	12	0 (0.0%)	0 (0.0%)	12 (100.0%)	0 (0.0%)	4	0 (0.0%)
khm (Cambodia, Kingdom of)	9	0 (0.0%)	0 (0.0%)	9 (100.0%)	0 (0.0%)	6	0 (0.0%)
kor (South Korea)	75	0 (0.0%)	35 (46.7%)	40 (53.3%)	0 (0.0%)	11	0 (0.0%)
lby (Libya)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	2	0 (0.0%)
lca (Saint Lucia)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lie (Liechtenstein)	2	0 (0.0%)	2 (100.0%)	0 (0.0%)	0 (0.0%)	2	0 (0.0%)
lka (Sri Lanka)	42	0 (0.0%)	4 (9.5%)	38 (90.5%)	0 (0.0%)	3	0 (0.0%)
ltu (Lithuania)	23	0 (0.0%)	3 (13.0%)	20 (87.0%)	0 (0.0%)	6	0 (0.0%)
lva (Latvia)	5	0 (0.0%)	4 (80.0%)	1 (20.0%)	0 (0.0%)	1	0 (0.0%)
mar (Morocco)	94	0 (0.0%)	1 (1.1%)	93 (98.9%)	0 (0.0%)	6	0 (0.0%)
mli (Mali)	2	0 (0.0%)	2 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
mlt (Malta)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
mmr (Myanmar)	10	0 (0.0%)	0 (0.0%)	10 (100.0%)	0 (0.0%)	4	0 (0.0%)
mng (Mongolia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
mnp (Northern Mariana Islands)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
moz (Mozambique)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mrt (Mauritania)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mys (Malaysia)	22	0 (0.0%)	6 (27.3%)	16 (72.7%)	0 (0.0%)	5	0 (0.0%)
nam (Namibia)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
nga (Nigeria)	17	0 (0.0%)	1 (5.9%)	16 (94.1%)	0 (0.0%)	5	0 (0.0%)
nor (Norway)	31	0 (0.0%)	13 (41.9%)	18 (58.1%)	0 (0.0%)	9	0 (0.0%)
nzl (New Zealand)	59	0 (0.0%)	11 (18.6%)	48 (81.4%)	0 (0.0%)	9	0 (0.0%)
omn (Oman)	13	0 (0.0%)	1 (7.7%)	12 (92.3%)	0 (0.0%)	2	0 (0.0%)
pri (Puerto Rico)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
pse (Palestinian Territory, Occupied)	25	0 (0.0%)	0 (0.0%)	25 (100.0%)	0 (0.0%)	1	0 (0.0%)
qat (Qatar)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	1	0 (0.0%)
reu (Reunion [French])	4	0 (0.0%)	1 (25.0%)	3 (75.0%)	0 (0.0%)	2	0 (0.0%)
som (Somalia)	13	0 (0.0%)	0 (0.0%)	13 (100.0%)	0 (0.0%)	5	0 (0.0%)
svn (Slovenia)	24	0 (0.0%)	3 (12.5%)	21 (87.5%)	0 (0.0%)	8	0 (0.0%)
syr (Syria)	22	0 (0.0%)	0 (0.0%)	22 (100.0%)	0 (0.0%)	1	0 (0.0%)
tcd (Chad)	7	0 (0.0%)	4 (57.1%)	2 (28.6%)	1 (14.3%)	2	1 (50.0%)
tto (Trinidad and Tobago)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
uzb (Uzbekistan)	20	0 (0.0%)	0 (0.0%)	20 (100.0%)	0 (0.0%)	3	0 (0.0%)
vut (Vanuatu)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
zmb (Zambia)	5	0 (0.0%)	2 (40.0%)	3 (60.0%)	0 (0.0%)	2	0 (0.0%)